Biol Blood Marrow Transplant xxx (2014) 1e20 1 2 3 4 5 6 7 Q 14 8 9 10 11 12 Q 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Q 2 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Sleep Disruption in Hematopoietic Cell Transplantation Recipients: Prevalence, Severity, and Clinical Management ASBMT American Society for Blood and Marrow Transplantation Heather S.L. Jim 1, *, Bryan Evans 1, Jiyeon M. Jeong 2, Brian D. Gonzalez 1, Laura Johnston 2, Ashley M. Nelson 3, Shelli Kesler 2, Kristin M. Phillips 2, Anna Barata 1, 4, Joseph Pidala 1, Oxana Palesh 2 1 Moffitt Cancer Center, Tampa, Florida Stanford School of Medicine, Stanford Cancer Institute, Stanford, California University of South Florida, Tampa, Florida 4 Psychiatry and Legal Medicine PhD Program, Universitat Autònoma de Barcelona, Barcelona, Spain 2 3 Article history: Received 27 December 2013 Accepted 9 April 2014 Key Words: Sleep disruption Hematopoietic cell transplant Management of sleep disruption a b s t r a c t Sleep disruption is common among hematopoietic cell transplantation (HCT) recipients, with over 50% of patients experiencing sleep disruption pretransplantation, up to 82% experiencing moderate to severe sleep disruption during hospitalization for transplant, and up to 43% in the post-transplantation period. These rates of sleep disruption are substantially higher than the general population. Although sleep disruption can be distressing to patients and contribute to diminished quality of life, it is rarely discussed during clinical visits. The goal of the current review is to draw attention to sleep disruption as a clinical problem in HCT to facilitate patient education, intervention, and research. The review opens with a discussion of sleep disruption measurement and clinical diagnosis of sleep disorders. An overview of the prevalence, severity, and chronicity of sleep disruption and disorders in patients receiving HCT follows. Current evidence regarding sociodemographic and clinical predictors of sleep disruption and disorders is summarized. The review concludes with suggestions for behavioral and pharmacologic management of sleep disruption and disorders as well as directions for future research. Ó 2014 American Society for Blood and Marrow Transplantation. INTRODUCTION The number of both autologous and allogeneic hematopoietic cell transplants (HCTs) has increased dramatically in recent years, with more than 50,000 performed worldwide each year [1]. This increase in HCT is due to a greater number of indications for its use as well as advances in therapy, including more frequent use of peripheral blood stem cells, reduced-intensity conditioning regimens, greater use of cells from unrelated and alternative donors, improvements in supportive care, and advances in histocompatibility typing. Survival has generally improved as well [1], resulting in a growing number of patients living with the short- and longterm side effects of HCT. Sleep disruption is frequently overlooked as a side effect of HCT. Sleep disruption includes difficulty falling asleep, staying asleep, awakening earlier than intended, and/or nonrestorative sleep [2]. It can occur without a clinical diagnosis of a sleep disorder, although a clinical diagnosis may be warranted if sleep disruption is chronic and impairs daily functioning. Sleep disruption is common after HCT, distressing to patients [3], and associated with greater fatigue and reduced quality of life [3,4]. Nevertheless, sleep disruption is seldom the focus of patienteprovider communication. A survey of 180 HCT physicians found that only 17% Financial disclosure: See Acknowledgments on page 18. * Correspondence and reprint requests: Heather S. L. Jim, PhD, Department of Health Outcomes and Behavior, Moffitt Cancer Center, MRC-PSY, 12902 Magnolia Drive, Tampa, FL 33612. E-mail address: heather.jim@moffitt.org (H.S.L. Jim). discussed sleep with their patients during at least half of clinical visits [5]. The goal of the current review is to draw attention to sleep disruption as a clinical problem in HCT and to provide clinicians and researchers with an overview of current evidence to facilitate diagnosis, patient education, intervention, and research. The review begins with a brief discussion of the assessment and clinical diagnosis of sleep disruption and common sleep disorders (ie, insomnia, obstructive sleep apnea [OSA], and restless legs syndrome [RLS]). We then synthesize and critically review evidence regarding the prevalence, severity, and chronicity of sleep disruption and disorders in patients before HCT, during the acute transplantation phase, and early, middle, and long-term survivorship. This review focuses on HCT studies published in the past decade to ensure greater relevance to current transplant practices. Sociodemographic and clinical risk factors are described, with an emphasis on those relevant to HCT. We conclude with recommendations for management of sleep disruption and disorders in the transplant setting as well as directions for future research. ASSESSMENT OF SLEEP DISRUPTION Objective and self-report measures of sleep disruption have been developed to facilitate differential diagnosis and to monitor sleep over time. The gold standard for objective measurement is polysomnography, which measures multiple biologic processes of sleep, including electrical activity in the brain and heart, limb movement, and eye movements. In addition to collecting essential data for diagnosing sleep disorders, polysomnography allows the additional advantage 1083-8791/$ e see front matter Ó 2014 American Society for Blood and Marrow Transplantation. http://dx.doi.org/10.1016/j.bbmt.2014.04.010 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 2 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 of monitoring the progression of sleep stages (eg, rapid eye movement sleep or dreaming) and brain arousal during sleep, which can elucidate the occurrence of sleep interruptions. It is typically conducted in a sleep lab or hospital, although home-based polysomnography is increasingly used because of its lower cost. An alternative to polysomnography is actigraphic monitoring in which a small, nonintrusive piezoelectric monitor similar to a wristwatch is worn on the nondominant wrist to detect and record motion. Specialized software is used to determine sleep versus waking using algorithms validated against polysomnography. Actigraphy data, in combination with patients’ self-reports of bedtime and rising time, have been found to be a reliable and valid measure of circadian sleep patterns [6]. Parameters assessed include time in bed asleep, time until sleep onset, number and length of nighttime awakenings, number and length of daytime naps, and circadian variation in sleep and activity. Periodic limb movement can also be assessed. Actigraphs are relatively inexpensive and can be worn at home or in the hospital for several days or weeks, enabling the naturalistic study of sleep disruption over time. Actigraphy is typically used for research rather than diagnostic purposes. Despite the widespread availability of polysomnography and actigraphy, to our knowledge only 1 study in HCT patients has been published using these measures to assess sleep [7]. Thus, objective sleep patterns of HCT patients are largely unknown. Regarding self-report measures of sleep, several have been validated in cancer patients [8,9]. The most common are the Insomnia Severity Index [10] and the Pittsburgh Sleep Quality Index [11]. These measures typically ask patients to estimate how long it takes them to fall asleep, how many hours they sleep each night, their use of sleep medications, and their perceptions of sleep quality. Additional measures used include the Epworth Sleepiness Scale [12] to evaluate daytime sleepiness and the International Restless Legs Syndrome Study Group rating scale to evaluate RLS symptomatology [13]. In addition to self-report measures, sleep diaries can play an important role in research and clinical diagnosis. Patients are typically asked to fill out the diary on a daily basis for several days or weeks. Requested information includes bedtime and rising times as well as duration of sleep, sleep quality, difficulty initiating and maintaining sleep, daytime napping, medications taken, and other details [14,15]. Diaries can be particularly useful in both the research and clinical settings for obtaining detailed information regarding patterns of disruption, contributing factors, and targets of intervention. CLINICAL DIAGNOSIS OF SLEEP DISORDERS Guidelines for clinical evaluation of sleep disorders depend on the disorder under consideration. Regarding insomnia, diagnosis is based on a detailed sleep, medical, substance, and psychiatric history in addition to a physical and mental status examination. Sleep diaries are often used as well. The goal is to establish the type and evolution of insomnia, perpetuating factors, extent of daytime dysfunction, and identification of comorbid medical, substance, and/ or psychiatric conditions [16]. Diagnostic criteria for insomnia include (1) difficulty initiating sleep, maintaining sleep, and/or early morning awakening with the inability to return to sleep; (2) significant distress and/or impairment in functioning; (3) sleep difficulty that occurs at least 3 nights a week for at least 3 months; (4) sleep difficulty that occurs despite adequate opportunity to sleep; and (5) symptoms that cannot be explained by another mental or medical disorder [2]. Regarding OSA, a sleep history and physical exam including symptoms and risk factors (eg, snoring, gasping/ choking at night, daytime sleepiness, obesity, type 2 diabetes, congestive heart failure, treatment-refractory hypertension) are indicated [17]. Patients deemed to be at high risk should then be evaluated using polysomnography or homebased monitoring for definitive diagnosis [17]. Criteria for diagnosis are (1) evidence by polysomnography of at least 5 apneas or hypopneas per hour of sleep (ie, snoring, snorting/ gasping, breathing pauses); (2) daytime sleepiness, fatigue, or unrefreshing sleep despite sufficient opportunity for sleep; (3) symptoms are not better explained by another mental or sleep disorder or medical condition; or (4) evidence by polysomnography of 15 or more obstructive apneas and/or hypopneas per hour of sleep regardless of accompanying symptoms [2]. Regarding RLS, diagnosis is based primarily on self-report, although polysomnography and actigraphy can be used [18]. Diagnostic criteria for RLS are (1) an urge to move the legs accompanied by or in response to uncomfortable and unpleasant sensations in the legs; (2) the urge begins or worsens during periods of rest or inactivity, is partially or totally relieved by movement, and is worse or occurs only in the evening or at night; (3) symptoms occur at least 3 times a week for 3 months; (4) symptoms are accompanied by significant distress and/or impairment in functioning; and (5) symptoms are not attributable to another mental or medical disorder [2]. SLEEP DISRUPTION AND DISORDERS BEFORE TRANSPLANT Research on sleep disorders before HCT is limited to case studies of lymphomas presenting as OSA (eg, [19]). In addition, a study of polysomnography in 12 multiple myeloma patients receiving high-dose chemotherapy [7] reported greater respiratory events and lower-than-normal levels of arterial oxygen saturation, on average. Periodic limb movements in the sample were high and increased during the course of chemotherapy. No studies have reported on the incidence or prevalence of pretransplant sleep disorders. Numerous precipitating factors can contribute to sleep disruption in patients before transplant, however. Patients typically undergo several rounds of standard-dose chemotherapy that is associated with short- and long-term sleep disruption [20]. Side effects of chemotherapy, such as peripheral neuropathy, may also contribute to sleep disruption [20]. Among cancer patients treated with standarddose chemotherapy, the prevalence of RLS was 18% (ie, double that of the general population), with longer chemotherapy associated with greater risk of RLS [21]. In addition, many patients have elevated levels of anxiety and depressive symptomatology [22]; anxiety can contribute to sleep disruption, whereas both insomnia and hypersomnia are symptoms of depression and share some common etiology [2]. Regarding the prevalence of sleep disruption outside the context of a diagnosable sleep disorder, 16 studies have examined sleep before transplantation (Table 1). Of these, 9 studies did not provide estimates of prevalence of sleep disruption or comparisons with individuals not receiving HCT [7,23-30]. The remaining 7 studies are heterogeneous in REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 Table 1 Observational Studies of Sleep in HCT Recipients Sample Demographics Time Frame Sleep Measures Statistical Analyses Main Relevant Findings Anderson et al. (2007) [31] Auto-HCT (N ¼ 100) Included both disease-free and relapsed patients NHL (34%), MM (66%) Age: Mean ¼ 53.6 (9.7) Range ¼ 24-75 Gender: M ¼ 60% F ¼ 40% Race: Caucasian ¼ 81% African American ¼ 12% Hispanic ¼ 5% Other ¼ 2% Longitudinal; 5 assessments: pre-HCT, 3rd4th day of conditioning, day 0, nadir, day 30 MDASI-BMT (a singleitem measure of sleep disruption) Repeated measures ANOVA Andrykowski et al. (2005) [48] HCT survivors (N ¼ 662) and age- and sex-matched healthy control subjects (N ¼ 158) Allo (41%), auto (59%), missing (1%) AML (29%), CML (19%), ALL (7%), Breast cancer (23%), lymphoma (20%), other (1%) Allo-HCT (N ¼ 76) RIC (54%), myeloablative (46%) Included patients in remission and with progressive disease Acute leukemia (17%), chronic leukemia (38%), lymphoma or MM (29%), MDS (12%), nonhematologic malignancy (4%) Mean age: 50.1 (14.2) Gender: M ¼ 30% Race: White ¼ 95% Cross-sectional; mean of 7 yr (84 mo) post-HCT (inclusion criteria: >12 mo post-HCT) MOS-Sleep MANOVA (univariate analyses) The percentage of patients reporting disturbed sleep at moderate or severe levels at each time point were as follows: 8% at baseline, 34% at conditioning, 39% at nadir, 14% at day 30. 8% reported sleep disruption at baseline, 34% at conditioning, 26% at transplant, 39% at nadir, and 14% at day 30. Sleep disruption was one of most severe symptoms at nadir, returned to pre-HCT levels by day 30 post-HCT Sleep disruption was significantly worse for NHL than MM patients (P ¼ .024) HCT survivor group reported more sleep problems than healthy control group (effect size ¼ .39, P < .001). Mean age: 40.2 (13.5) Gender: M ¼ 67% F ¼ 33% Race: White ¼ 46% Hispanic ¼ 30% Asian ¼ 9% Black ¼ 7% Other ¼ 8% Longitudinal; baseline (before transplant conditioning), day 0, day 30, day 100 Symptom Distress Scale Univariate descriptive analyses Age: Median ¼ 34 Range ¼ 14-65 Gender: M ¼ 79 F ¼ 45 Cross-sectional; median of 7.3 yr post-HCT EORTC QLQ-C30 Descriptive statistics, t-test Bevans et al. (2008) [3] Bieri et al. (2008) [49,50] Allo-HCT (N ¼ 124) AML (n ¼ 40), ALL (n ¼ 20), CML (n ¼ 31), CLL (n ¼ 1), MDS (n ¼ 8), lymphoma (n ¼ 14), MM (n ¼ 1), MPS (n ¼ 3), AA (n ¼ 6) At baseline, approximately 55% of patients reported insomnia, 86% had insomnia at day 0, nearly 70% had insomnia at day 30, and at day 100 insomnia levels went down to baseline levels. Insomnia was the most distressing symptom at day 0 (reported by 32% of participants). Significantly higher sleep disruption among HCT patients compared with Norwegian population norms. Unclear where normative data came from. Difference of .33 SD. Univariate analysis indicated that employment status was associated with sleep disruption. H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Study (continued on next page) 3 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 4 Table 1 (continued ) Sample Demographics Time Frame Sleep Measures Statistical Analyses Main Relevant Findings Bishop et al. (2007) [50] HCT (N ¼ 177), partners (N ¼ 177), control subjects (N ¼ 133) Allogeneic ¼ 78 (44%), Autologous ¼ 99 (56%) AML or ALL (39%), CML (22%), breast cancer (18%), lymphoma (21%) Mean age: 50 (10) Gender: F ¼ 50% Race: White ¼ 94% Cross-sectional; mean of 7 yr (84 mo) post-HCT (inclusion criteria: >12 mo post-HCT) MOS-Sleep Mixed Effect Linear Models Boland et al. (2013) [60] Auto-HCT (n ¼ 29), allo-HCT (n ¼ 3), tandem HCT (n ¼ 10) MM (100%) MEL (n ¼ 29), maintenance lenalidomide (n ¼ 3), maintenance interferon-a (n ¼ 1) Hospitalized HCT (N ¼ 69) Allo (n ¼ 46), auto (n ¼ 23) Disease sites not reported Age: Median: 60 Range: 41-71 Gender: M ¼ 17 F ¼ 15 Cross-sectional: mean 5.5 yr post-diagnosis (range, 2-12) EORTC QLQ C-30 Spearman’s correlations Patients showed significantly higher rates of sleep problems than control subjects (ES ¼ .39). Partners showed significantly higher rates of sleep problems than control subjects (ES ¼ .22). Sleep disruption significantly correlated with serum IL-6 levels (P ¼ .02) Gender: Male ¼ 41 Female ¼ 26 Cross-sectional; day 14 post-HCT (reflective of 2-week period) ISI Descriptives and chi-square tests Mean age: 45 Range ¼ 19-74 Gender: M ¼ 56% F ¼ 44% Race: Black ¼ 15% Latino ¼ 23% White ¼ 62% Mean age: 48.65 (23-64) Gender: M ¼ 45% F ¼ 55% Race: White ¼ 35%, Black ¼ 40%, Latino ¼ 15%, Asian ¼ 5%, Other ¼ 5% Longitudinal; 8 assessments: pre-HCT to day 100 post-HCT MDASI Longitudinal linear mixed models, correlations Longitudinal; pre-HCT and 5 and 8 d post-HCT EORTC QLQ-C30 t-tests Boonstra et al. (2011) [37] Cohen et al. (2012) [28] Diverse HCT (N ¼ 164) Allo (62%), auto (38%) Disease sites not reported HD (n ¼ 24), NHL (n ¼ 21), AML (n ¼ 11) 38 Chemotherapy, 20 radiochemotherapy Danaher et al. (2006) [24] HCT (N ¼ 20 at baseline; N ¼ 17 post-HCT) Auto ¼ 10 (59%), allo ¼ 7 (41%) Lymphoma (23%), CML (6%), AML (18%), ALL (6%), MM (29%), myelofibrosis (12%), plasma cell leukemia (6%) No insomnia ¼ 26%, subthreshold insomnia ¼ 48%, clinically significant insomnia (moderate) ¼ 23%, clinically significant insomnia (severe) ¼ 3%. Female and allo patients were more likely to report insomnia (no observed differences in age). Toileting (85%), staff interruptions (80%), physical symptoms (41%), anxiety-self (39%), anxietyothers (35%), and noise (24%) most common reasons for sleep disruption. Sleep disruption was 1 of the 5 worst reported symptoms; associated with myeloablative regimens and worse functional status. Sleep disruption significantly worse postHCT. H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Study 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 De Souza et al. (2002) [77] Diez-Campelo et al. (2004) [39] Faulhaber et al. (2010) [44] Allo-HCT (N ¼ 61) CML (37.7%), severe AA (21.3%), AML (14.7), ALL (8.1%), NHL (6.5%), HD (4.9%), Other (6.5%) BU/CY (65.6%), RIC (18%), Cy (9.8%), TBI/CY (6.6%) Frick et al. (2006) [23] HCT (N ¼ 282) Allo (35%), auto (62%) AML/MDS (11.7%), ALL (5%), CML (16%), HD (4.3%), NHL (29.9%), MM (29.5%), Other (3.6%); (97% hematologic malignancies) Age: Range ¼ 19-61 Gender: M ¼ 14 F ¼ 12 Age range, 16-70 Age: Mean ¼ 61 Range ¼ 48-72 Gender: M ¼ 10 F¼2 Race: White ¼ 10 African American ¼ 2 Mean age: 36.5 (12.3) Gender: M ¼ 54.1% F ¼ 45.9% Age: Median ¼ 48.5 SD ¼ 11.9 Gender: F ¼ 39% Cross-sectional; mean of 1248 d post-HCT WHOQOL-100: singleitem assessment: “Do you have difficulties with sleeping?” Wilcoxon rank sum, Kruskal-Wallis tests No differences in sleep between patients receiving BM versus PBSC. Longitudinal; 6 assessments: days þ7, þ14, þ21, þ90, þ270, þ360 post-HCT FACT sleep disruption item: “I am sleeping well” Descriptives 14.3% of allo-RIC and 26.3% of auto patients had problems sleeping at 1 yr post-transplant (P ¼ .29). Cross-sectional; pre-HCT (1 assessment before, 1 assessment after chemo cycle) Polysomnography Descriptives Cross-sectional; 1-10 yr post-HCT DSM-IV-TR criteria for sleep disorders Multivariate analysis Cross-sectional; pre-HCT EORTC QLQ-C30 Pearson’s correlation coefficient Patients had a short sleep time, excessive time spent awake after sleep onset, poor sleep efficiency, more time in non-REM sleep, low arterial oxygen saturation, elevated periodic limb movements as measured by polysomnography. The prevalence of sleep disorders was 26.2%. Multivariate analysis indicated that busulfancyclophosphamide was an independent risk factor for sleep disorders (included sex and age). Compared patients with sample of German populationd36.6 patients versus 16.4 population (no SDs or SEs given). Sleep disruption was positively correlated with problematic social support (.183) H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Enderlin et al. (2013) [7] Allo-HCT (N ¼ 26) All in complete remission BM (n ¼ 13), PBSC (n ¼ 13) CML (n ¼ 21), AML (n ¼ 3), MDS (n ¼ 1), ALL (n ¼ 1) RIC allo-HCT (n ¼ 47), auto-HCT (n ¼ 70) AML (n ¼ 15), ALL (n ¼ 3), CML (n ¼ 5), MDS (n ¼ 7), NHL (n ¼ 3), HD (n ¼ 11), breast cancer (n ¼ 6), MM (n ¼ 29), CLL (n ¼ 4), amyloidosis (n ¼ 1) FLU/MEL or FLU/BU (n ¼ 47), BEAM (n ¼ 37), BU/MEL (n ¼ 8), CY/carboplatin/thiotepa (n ¼ 6), MEL (n ¼ 11), BU/CY (n ¼ 7), CY/ TBI (n ¼ 1) Auto-HCT (N ¼ 12) MM only All participants on the Total Therapy 3 protocol (continued on next page) 5 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 6 Table 1 (continued ) Sample Demographics Time Frame Sleep Measures Statistical Analyses Main Relevant Findings Frodin et al. (2011) [25] Auto-HCT (N ¼ 111) MM (n ¼ 56), lymphoma (n ¼ 32), testicular cancer (n ¼ 3), AML (n ¼ 2), multiple sclerosis (n ¼ 1) Conditioning: MEL (n ¼ 56), BEAM (n ¼ 33), CEC (n ¼ 3), BU/ MEL (n ¼ 2), ZAM (Aavados, ARA-C, melphalan) (n ¼ 2) Based on 96 patients: Age: Mean ¼ 54 (12) Gender: M ¼ 62 F ¼ 34 Longitudinal; baseline, week 1, week 2, week 3, week 4, month 2, month 3, month 6, year 1, year 1.5, year 2, year 2.5, and year 3 EORTC QLQ-C30 The results are presented using descriptive statistics, means adjusted for gender and age Gallardo et al. (2009) [61] Allogeneic BMT (N ¼ 820; N ¼ 150 QOL assessed) Peripheral blood group (N ¼ 410): AML (25.9%), ALL (24.1%), CML (30.7%), MM (2.7%), NHL (7.3%), HD (0.5%), MDS (7.8%), Other (1%) Bone marrow group (N ¼ 410): AML (25.9%), ALL (24.1%), CML (30.7%), MM (2.7%), NHL (7.3%), HD (0.5%), MDS (7.8%), Other (1%) Peripheral blood group: conditioning regimen with TBI ¼ 198 (48.3%) Bone marrow group: conditioning regimen with TBI ¼ 200 (48.8%) HCT (N ¼ 163) Allo (85%), auto (12%), syngenic (3%) Included both disease-free and relapsed patients CLL/CML (n ¼ 69), ALL/AML (n ¼ 58), Other (n ¼ 36) Quantitative review of 33 papers reporting EORTC scores in HCT and covering 2800 patients Range of participants (15-415), total N ¼ 2804 Allo ¼ 52.6% Auto ¼ 48.4% Acute leukemia (28%), CML (15.3%), other hematologic diseases (42.1%), solid tumors (14.8%) Peripheral blood group (N ¼ 410): Age: Median ¼ 35 Range ¼ 15-59 Gender: M ¼ 58.9% F ¼ 41.1% Bone marrow group (N ¼ 410): Age: Median ¼ 35 Range ¼ 15-59 Gender: M ¼ 62.3% F ¼ 37.7% Retrospective; follow up for alive patients: median 43.8 mo for patients receiving peripheral blood, median 46.6 mo for patients receiving bone marrow. EORTC QLQ-C30, Spanish Version Chi-square, t tests Worst sleep disruption at 2 weeks post-HCT. Sleep returned to baseline levels by 2 mo post-HCT, and remained relatively stable thereafter through the 3-year follow up. Increase of 1.1 SD from preHCT baseline to 2 wk follow up. Sleep disruption did not differ between myeloma and lymphoma patients. There were no significant differences in sleep difficulties reported between patients who received bone marrow (n ¼ 73, M ¼ 15.9, SD ¼ 26.7) versus peripheral blood (n ¼ 77, M ¼ 18.2, SD ¼ 26.2). Age at BMT: Median ¼ 34 (9.2) Gender: M ¼ 62.6% F ¼ 37.4% Cross-sectional; within 16 yr post-HCT; (inclusion criteria: 2 yr post-HCT, transplanted b/w 19791996) SF-36, EORTC QLQ-C30, SIP, Herschbach Stress in Cancer Patients Mann-Whitney analysis, correlations Unemployed, divorced, and distressed patients reported significantly greater sleep problems. Age Range (14-70) Gender: M ¼ 50.1% Longitudinal; pre-HCT, during hospitalization, at discharge, up to 6 mo, 7-12 mo, 1-3 yr, >3 yr EORTC QLQ-C30 Categorized data by time of assessment, unweighted arithmetic means. Sleep problems increase during inpatient stay then return to baseline levels after discharge (change of 25 points). Sleep problems described by authors as “persistent” and at a “high level.” Gruber et al. (2003) [29] Grulke et al. (2011) [26] H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Study 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 Auto-HCT (N ¼ 274) MEL/prednisone only (n ¼ 203), MM only Not reported Longitudinal; pre-HCT, 1 mo, 6 mo, 12 mo, 24 mo, and 36 mo post-HCT EORTC QOLQ-C30 Linear regression model with forward stepwise selection Hacker et al. (2003) [30] HCT (pre-HCT N ¼ 16, 6 wk post-discharge N ¼ 8) Allo (n ¼ 11), auto (n ¼ 5) Lymphoma (n ¼ 4), CML (n ¼ 3), AML (n ¼ 3), ALL (n ¼ 1), MM (n ¼ 3), myelofibrosis (n ¼ 3) Longitudinal; 4 assessments: pre-HCT, hospital discharge, 2 weeks post-discharge, 6 weeks post-discharge EORTC QLQ-C30 One-way repeated measures ANOVA with paired samples t-tests and Bonferroni corrections Harder et al. (2002) [78] HCT (N ¼ 40) Allo HCT (87.5%); allo MRD ¼ 26, allo MUD ¼ 9, auto ¼ 5 ALL (n ¼ 8), AML (n ¼ 10), CML (n ¼ 6), NHL (n ¼ 6), MDS (n ¼ 4), MM (n ¼ 4), AA (n ¼ 2) All had TBI up to 12 Gy, intrathecal treatment (n ¼ 11), conditioning regimen: CY (n ¼ 12), ARA-C/CY (n ¼ 19), VP-16/ CY (n ¼ 9) Sibling allo-HCT (N ¼ 51) (original sample of 75 HCT patients) CY/TBI (32%); BU/CY (68%) Mean age: 46.56 (11.31) Gender: M ¼ 50% F ¼ 50% Race: White ¼ 10 Black ¼ 2 Latino ¼ 2 Native American ¼ 1 Asian ¼ 1 Age at HCT: Mean ¼ 37.2 Range ¼ 15-55 Gender: M ¼ 24 F ¼ 16 Cross-sectional; 22-82 mo post-HCT EORTC QLQ-C30 Descriptives Sleep disruption M ¼ 18.3 (SD ¼ 22.6) Sleep disturbances were one of the most commonly reported complaints. Cross-sectional; median of 98 mo post-HCT EORTC QLQ-C30 Descriptives No difference in sleep disruption between HCT patients and reference population. Reference population not described. Longitudinal; mean of 2.5 yr and 4.5 yr post-HCT EORTC QLQ-C30 Mann-Whitney U test, correlations No differences in sleep disruption over time. Patients reported more sleep disruption than general Norwegian population. Physicians tended to underestimate sleep problems. Hayden et al. (2004) [53] Hendriks & Schouten (2002) [45] HCT (N ¼ 52 at T1; N ¼ 33 at T2) Auto (81%), allo (19%) at T1 Relapse free Lymphoma (40%), breast cancer (29%), acute leukemia (29%) Based on 51 patients alive in 2003: Age at BMT: Median ¼ 35 Range ¼ 14-55 Gender: M ¼ 31 F ¼ 20 Age: Mean ¼ 41 Gender: M ¼ 42% F ¼ 58% Reference population of population-based study of 3000 Norwegians aged 1893 yr Statistically significant difference between newly diagnosed multiple myeloma patients and population norms, small in magnitude with worse scores in patients. Sleep differences were found between T1 (M ¼ 41.67) and T2 (M ¼ 73.33) (baseline to immediately before discharge) and between T2 and T3 (M ¼ 33.33) (immediately before discharge to 2 wk posthospitalization). T4 M ¼ 33.33 H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Gulbrandsen et al. (2004) [32] (continued on next page) 7 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 8 Table 1 (continued ) Sample Demographics Time Frame Sleep Measures Statistical Analyses Main Relevant Findings Hjermstad et al. (2004) [33] HCT (N ¼ 130), chemotherapy patients (N ¼ 118) Allo (n ¼ 61), auto (n ¼ 69) HCT group: HD (n ¼ 15), highgrade NHL (n ¼ 43), low-grade NHL (n ¼ 11), CML (n ¼ 31), AML (n ¼ 19), ALL (n ¼ 11) Age at baseline: Median ¼ 35 Range ¼ 17-55 Gender: M ¼ 56% F ¼ 44% Longitudinal; pre-HCT and 3-5 yr post-HCT EORTC QLQ-C30 Wilcoxontest or 1-way ANOVA as appropriate. Confidence intervals for graphic illustrations Kiss et al. (2002) [57] Allo-HCT (N ¼ 28) Included both disease-free and relapsed patients CML only CY/TBI/ARA-C (n ¼ 27), BU/CY (n ¼ 1) HCT (N ¼ 34) and age- and sexmatched noncancer control subjects (N ¼ 68) Allo-HCT (61.8%), auto-HCT (38.2%) Chronic leukemia (14.7%), acute leukemia (47.1%), MM (8.8%), MDS (5.9%), solid tumor (2.9%), lymphoma (17.6%), sarcoma (2.9%) TBI fractionated (67.6%), TBI single dose (8.8%), no (23.5%) Allo-HCT (N ¼ 121) and chemotherapy (N ¼ 221) Disease free AML Only Age: Mean ¼ 32.6 Range ¼ 18.2-49.2 Gender: M ¼ 16 F ¼ 12 Mean age: 44.7 (9.4) Gender: M ¼ 50% F ¼ 50% Cross-sectional; mean of 13.2 yr post-HCT Single item from a symptom checklist developed at the hospital Descriptives No statistically significant changes in sleep disruption from baseline to 3-5 yr in allo or auto groups, but CT group reported improved sleep quality over time. Allo patients reported better sleep, auto worse sleep than general Norwegian population at baseline and 3-5 yr postHCT. 21 of 26 patients were mildly bothered by sleep disruption, whereas 5 of 26 were moderately or severely bothered. Cross-sectional; patients were at least 5 yr post-HCT EORTC-QLQ C30 Mann-Whitney U-tests No significant differences in sleep between HCT patients and healthy control subjects; patients had worse sleep by .06 SD. Allogeneic BMT: Age at diagnosis: Median ¼ 38 Gender: F ¼ 52% Mean age: 49.25 (12.82) Gender: M ¼ 51.5% F ¼ 47.8% Race: White ¼ 83.7%, African American ¼ 5.7%, Hispanic ¼ 3.9%, West Indian ¼ 1.5%, Other ¼ 4.4% Cross-sectional; HCT patients were a median of 8 yr post-HCT; chemo patients were a median of 9 yr post-chemo Cross-sectional; mean of 21 mo post-HCT EORTC QLQ-C30 Chi-square, stratified Mantel-Haenszel, non parametrics FACT-BMT Percentage No difference in sleep disruption between allo HCT patients and chemotherapy patients (.06 SD). 80% of patients reported sleeping well. Kopp et al. (2005) [51] Messerer et al. (2008) [55] Mosher et al. (2011) [56] HCT (N ¼ 406) Auto (60.3%), allo (29.1%) Relapse free NHL (22.4%), HD (6.2%), AML/ CML (11.6%), ALL/CLL (3.4%), MDS/MPS (8.4%), MM/ amyloidosis (33.7%), Other (1.5%) H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Study 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 Allo-HCT (N ¼ 100) AML (41%), CML (22%), ALL (12%), lymphoma (6%), MDS (6%), MM (4%), AA (4%), MPD (2%), PNH (2%), CLL (1%) Age: Mean ¼ 46.3 (14.7) Range ¼ 16-76 Gender: M ¼ 55% F ¼ 45% Cross-sectional; mean of 95.4 mo post-HCT EORTC QLQ-C30 Effect Sizes ¼ Cohen’s d, t-tests, 1-way ANOVA Rischer et al. (2009) [4] HCT (N ¼ 50 at pre-HCT, N ¼ 32 at day 100 post-HCT) Allo (78%), auto (22%) AML (36%), MM (22%), NHL (14%), MDS (10%), osteomyelofribrosis (10%), Others (8%) Mean age: 53.3 (12.6) Gender: M ¼ 74% F ¼ 26% Longitudinal; 3 assessments: pre-HCT, during hospital stay, and day 100 post-HCT PSQI, sleep diary Chi-square, McNemar tests, repeated measures ANOVA Spearman’s correlation coefficients Sherman et al. (2003) [35] Pre-BMT (N ¼ 61) MM (85.3%), MGUS (8.2%), amyloid (6.6%) Age: Mean ¼ 57 (12.3) Gender: M ¼ 63.9% F ¼ 36.1% Race: White ¼ 91.8% Other ¼ 8.2% Cross-sectional; mean of 7.4 mo post-diagnosis; all were assessed before BMT Epworth Sleepiness Scale Descriptives, percentages, and Spearman correlations No significant association between sleep disruption and time since transplant. Sleep disruption was greater in patients with ongoing GVHD compared with patients with no GVHD (ES ¼ .31; not significant). Difference in sleep disruption between HCT patients and the reference Austrian population (ES ¼ .31). Prevalence of sleep disruption 32% before HCT, 77% during hospitalization, 28% at day 100. During hospitalization: difficulties maintaining sleep was the most reported sleep dimension (81.8% moderate to severe, mainly caused by noises and toileting), then nonrestorative sleep (61.4%), difficulties falling asleep (52.3%), difficulties falling back asleep (47.7%), and early a.m. awakenings (20.5%). Allo patients had significantly worse sleep than auto patients. Increases in sleep disruption correlated with increases in fatigue, physical functioning, treatment-specific distress but not anxiety and depression Pilot study 43.33% exceeded the clinical cut-off of daytime sleepiness. Older age associated with more daytime sleepiness. Lower hemoglobin levels associated with more daytime sleepiness. H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Pallua et al. (2010) [47] (continued on next page) 9 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 10 Table 1 (continued ) Sample Demographics Time Frame Sleep Measures Statistical Analyses Main Relevant Findings Syrjala et al. (2005) [52] HCT survivors (N ¼ 137) and age- and sex-matched control subjects from the NHANES study (N ¼ 4020) Allo (88%), auto (12%) CML (chronic phase) (45%), CML (accelerated or blast crisis) (7%), acute leukemia in remission (14%), acute leukemia in relapse (8%), lymphoma in remission (10%), lymphoma in relapse (7%), MDS (7%), Other (4%) HCT (N ¼ 171) and chemotherapy (n ¼ 310) Allo (n ¼ 97), auto (n ¼ 74) CY (n ¼ 147), BU (n ¼ 26), mesna (n ¼ 27), MEL (n ¼ 18), TBI (n ¼ 135) BMT survivors: Mean Age: 34.6 (9.0) Gender: M ¼ 48% Race: White ¼ 95% non-white, non-Hispanic ¼ 3% Hispanic ¼ 2% Cross-sectional; 10 yr postHCT Checklist of symptoms developed for the study Paired t-tests, McNemar, Wilcoxon signed ranks tests Alphas set at .01. 14% of survivors reported moderate or severe sleep problems compared with 9% of control subjects; results were not statistically significant. For all groups: Age: Median ¼ 39 Range ¼ 15-58 Gender: M ¼ 45% F ¼ 55% Cross-sectional; at least 1 yr post-HCT EORTC QLQ-C30 Wilcoxon 2 sample test, t-test, generalized linear models Age: Median ¼ 50 Range ¼ 31-66 Gender: M ¼ 13 F¼9 Age: Median ¼ 34 Range ¼ 17-57 Gender: M ¼ 86 F ¼ 69 Longitudinal; pre-HCT and 1 yr post-HCT EORTC QLQ-C30 McNemar test, paired t-test 45% of patients reported sleep disruption. Sleep disruption more severe in older patients than younger patients. No difference in sleep disruption between allo, auto, or chemotherapy groups. No differences in sleep disruption between males and females. No significant changes in sleep disruption (ES ¼ .03), no differences compared with Swedish population norms Cross-sectional; at least 2 yr post-HCT EORTC QLQ-C30 Descriptives Watson et al. (2004) [59] Wettergren et al. (2008) [34] Auto-HCT (N ¼ 22), compared with Swedish population norms HD (n ¼ 1), NHL (n ¼ 3), AML (n ¼ 6), MM (n ¼ 12) Worel et al. (2002) [46] Allo or syngeneic HCT (N ¼ 155) Disease free ALL/AML (n ¼ 9/43), CML (n ¼ 56), MM (n ¼ 5), MDS (n ¼ 7), NHL (n ¼ 15), AA (n ¼ 19), testicular cancer (n ¼ 1) TBI/CY, CY, CY/ATG, BU/CY H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Study Divided patients 2-5 yr post-HCT and more than 5 yr post-HCT. Of all patients, 45% had none or slight sleep disruption, 43% had moderate sleep disruption, and 12% had severe sleep disruption. Percentages were comparable for patients 2-5 yr post-HCT and more than 5 yr postHCT. AA indicates aplastic anemia; ALL, acute lymphoid leukemia; AML, acute myeloid leukemia; ARA-C, cytarabine; ATG, anti-thymocyte globulin; BEAM, carmustine, etoposide, cytarabine, melphalan; BM, bone marrow; BU, busulfan; CEC, ; CLL, chronic lymphocytic leukemia; CML, chronic myeloid leukemia; CY, cyclophosphamide; DSM-IV-TR, Diagnostic and statistical manual of mental disorders, 4th edition, Text Revision; EORTC QLQ-C30, European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30; ES, ; FACT-BMT, Functional Assessment of Cancer TherapyeBone Marrow Transplant; FLU, fludarabine; HD, hodgkin disease; ISI, Insomnia Severity Index; MDASI, M.D. Anderson Symptom Inventory; MDS, myelodysplastic syndrome; MEL, melphalan; MGUS, monoclonal gammopathy of undetermined significance; MM, multiple myeloma; MOS, medical outcomes study; MPS, myeloproliferative syndrome; MRD, matched related donor; MUD, matched unrelated donor; NHL, non-Hodgkin’s lymphoma; PBSC, peripheral blood stem cell; PNH, paroxysmal nocturnal hemoglobinuria; PSQI, Pittsburgh Sleep Quality Index; REM, rapid eye movement; RIC, reduced-intensity conditioning; SF-36, medical outcomes study short forme36; SIP, sickness impact profile; TBI, total body irradiation; VP16, etoposide; WHOQOL100, World Health Organization Quality of Life Questionnaire 100. Q 11 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 terms of their sample composition, sample size, measure of sleep, and clinical cut-off [3,4,31-35]. Thus, it is not surprising that there is substantial heterogeneity among study findings. Studies using single-item measures of sleep disruption suggest that approximately 8% of autologous patients report moderate to severe sleep disruption [31], whereas more than 50% of allogeneic patients report sleep disruption of any severity [3]. In contrast, the 2 studies using validated measures (ie, Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale) found that 32% of patients reported clinically significant sleep disruption before autologous or allogeneic transplant [4] and 43% of multiple myeloma patients reported clinically significant daytime sleepiness before autologous transplantation [35]. A direct comparison of sleep disruption between patients receiving allogeneic versus autologous HCT using a single-item measure suggested that sleep was significantly better among allogeneic patients, although sample sizes were small and findings were confounded by group differences in diagnosis and remission status [33]. Comparisons between HCT patient and population norms are mixed, with 1 large study reporting that patients reported significantly worse sleep before autologous transplant or treatment with melphalan or prednisone [32], whereas 2 smaller studies found no differences, perhaps due to low statistical power [33,34]. In summary, although findings are mixed, available data suggest that sleep disruption before transplant is common but relatively mild on average. SLEEP DISRUPTION AND DISORDERS DURING THE ACUTE TRANSPLANT PERIOD The first 100 days post-transplant are typically characterized by multiple acute side effects of the conditioning regimen, including mucositis, enteritis, nausea and emesis, episodes of delirium, and, in the case of allogeneic transplant, acute graft-versus-host disease (GVHD) and immunosuppressive therapies. These side effects and their treatment may disrupt sleep [36]. Moreover, these side effects frequently occur in the context of hospitalization, which can have an additive effect on disrupted sleep [4]. Consequently, sleep disruption tends to be most pronounced in the first 100 days post-transplant. The most extensive research on sleep disruption in HCT patients has also been conducted during this period [3,4,24-26,30-32,37-39], although it is characterized by several limitations, including small samples, which are heterogeneous in terms of diagnosis and transplant type as well as low statistical power. In addition, data are lacking regarding the prevalence and onset of sleep disorders during this time, with the exception of 1 study reporting a prevalence rate of clinically significant insomnia of 26% [37]. Available data suggest that sleep disruption was the most distressing symptom among allogeneic HCT recipients at day 0 and was significantly correlated with bowel changes and fatigue [3]. Sleep disruption significantly increased during the first 100 days, with greatest disruption seen during the conditioning regimen and WBC count nadir [31]. Mean changes of 27 points on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 sleep disruption item were observed from pretransplant baseline to its peak approximately 2 weeks after HCT [25], corresponding to a large increase and effect size of 1.1 standard deviations (SDs) [25]. These data are consistent with a quantitative review of all published studies using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 to 11 assess quality of life in HCT patients, which found large increases in sleep disruption during hospitalization [26]. Difficulty maintaining sleep was the most common problem in hospitalized HCT patients (82%), followed by nonrestorative sleep (61%), problems falling asleep (52%), difficulties falling back to sleep once awake (48%), and early morning awakening (21%) [4]. Patients largely attributed these problems to the hospital environment, such as noise from medical equipment and nursing staff, and to emotional agitation and stress [4,37]. A small study found that allogeneic transplant patients reported better sleep before transplant but worse sleep during hospitalization [4]. At the time of hospital discharge, the average severity of sleep disruption among allogeneic and autologous patients was still moderately elevated relative to baseline symptomatology (ie, .51 SD) [26]. Nevertheless, it appeared that increases in sleep disruption were generally transient; by day 100, sleep disruption returned to levels comparable with pre-HCT [4,25,31], although these levels were substantially elevated even before the transplant. Patients receiving allogeneic HCT demonstrate similar levels of sleep disruption near day 100 to patients receiving autologous transplant [4]. SLEEP DISRUPTION AND DISORDERS AFTER THE ACUTE TRANSPLANT PERIOD New precipitating factors of sleep disruption may occur after the acute transplant period. Patients who experienced resolved sleep disruption or never experienced sleep disruption during transplantation may develop late-onset sleep problems due to corticosteroid treatment for chronic GVHD, inflammation due to GVHD or infection, fear of disease progression, pain, or additional treatments for relapsed disease. For example, evidence suggests that long-term corticosteroid use is a risk factor for OSA, perhaps because of weight gain [40]. Insomnia is also a common side effects of taking corticosteroids, particularly if the medication is taken closer to bedtime. Muscle cramps and neuropathy have been found to be common among patients with GVHD and to disrupt sleep [41]; neuropathy is also a risk factor for RLS [42]. These factors and others can also perpetuate existing sleep problems and contribute to the development of persistent (lasting more than 3 months) or recurrent sleep problems. Additional perpetuating factors of insomnia include cognitive distortions and maladaptive behaviors that begin in reaction to a stressor and persist after the stressor is resolved [43]. Examples of cognitive distortions that can make sleep disruption worse are as follows: “I’m going to feel terrible tomorrow if I don’t sleep well” or “I’m never going to get to sleep.” Maladaptive behaviors can include spending prolonged time in bed, going to bed excessively early, sleeping late, and staying in bed while no longer asleep. Although these behaviors may initially be helpful, particularly for people experiencing acute illness, eventually they can contribute to irregular sleep patterns that result in insomnia long after the patient has recovered from the acute stressor or illness [43]. Only 1 study has examined the prevalence of sleep disorders after transplant. Among 61 allogeneic HCT recipients transplanted 1 to 10 years previously, 23% met criteria for a diagnosis of insomnia and 3% for hypersomnia; no other sleep disorders were observed [44]. In addition, no studies have examined precipitating versus perpetuating factors of sleep disruption after the acute transplant period. Nevertheless, 23 studies have reported on sleep disruption outside the context of a diagnosed sleep disorder 90 days or more REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 12 Table 2 Online Resources for Sleep Disorders and Disruption Relevant Disorder(s) Resource Internet Address Description Evidence Base Cost Cognitive-behavioral interventions Insomnia SHUTi www.shuti.me Cancer patients Adults $129.00 For 16 weeks of access Insomnia RESTORE www.restorecbt.com Interactive online program that includes videos from insomnia experts, interactive quizzes, and vignettes dealing with real-life sleep issues Progress is tracked Provides recommendations tailored to individuals’ sleep difficulties Treatment consists of 5 modules with instructive videos and downloadable MP3 files Adults Insomnia Sleepio www.sleepio.com Cost unspecified. Made available through patients health care provider. Also works with health insurance providers. Three payment plan options: $9.99 per week, $79.99 for 12-week access, and $119.99 for 24-week access. All sleep disorders National Sleep Foundation www.sleepfoundation.org All sleep disorders Sleep Education www.sleepeducation.com All sleep disorders Your Sleep http://yoursleep.aasmnet.org OSA American Sleep Apnea Association http://sleepapnea.org/ RLS Willis-Ekbom Disease Foundation http://www.rls.org/ Insomnia National Cancer Institute www.cancer.gov General sleep health American Cancer Society www.cancer.org Insomnia Cancer Support Community www.cancersupportcommunity.org Education about insomnia and treatment Cancer-specific education about insomnia and treatment Interactive online treatment is delivered by a virtual therapist and consists of 6 personally tailored interactive stages Progress is tracked and each stage is adjusted accordingly Comprehensive information about sleep, support groups, video and audio library, and sleep professional location assistance Comprehensive information about sleep difficulties, video archive, and sleep professional location assistance Comprehensive information about sleep, self-administered sleep assessments, downloadable sleep diary, online forum, and sleep professional location assistance Self-administered screening for OSA, information about OSA, and information on support groups for people with OSA Self-administered screening for RLS, information about RLS, and information on support groups for people with RLS Information specific to cancer related sleep difficulties, symptom management tips, and modules To find sleep information type "sleep" into the "search" box located on the upper righthand corner on the home page Information specific to cancer-related sleep difficulties and treatment and symptom management tips, and modules Available in Spanish. To find sleep information type "sleep" into the “search” box located on the center on the home page Information specific to cancer-related sleep difficulties, tips for managing insomnia, hyperinsomnia, and nightmares To find sleep information type “sleep” into the “search” box located on the upper righthand corner on the home page Adults N/A Free N/A Free N/A Free N/A Free N/A Free N/A Free N/A Free N/A Free H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Type of Intervention 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 Free Free N/A http://clinicaltrials.gov/ National Institutes of Health All sleep disorders Search engine for nationwide cancer clinical trials To find sleep-related clinical trials type “sleep” into the “keywords/phrases” box towards the middle of the page Search engine for nationwide clinical trials To find sleep-related clinical trials with cancer patients type “sleep AND cancer” into the “search for studies” box at the top of the page http://www.cancer.gov/clinicaltrials/ search National Cancer Institute All sleep disorders Clinical trials search engines 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 N/A H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 13 after HCT. Notably, 20 assessed sleep using a single item as part of a larger quality of life scale, whereas only 3 included validated measures of sleep. Seventeen studies were crosssectional; many included mixed samples of autologous and allogeneic recipients who ranged widely in terms of time from transplant. Thus, definitive conclusions are difficult to draw. However, available data suggest that after peaking during the acute transplant period, the prevalence and severity of sleep disruption remains relatively constant over time. Most studies found no significant change in sleep disruption between 1 and 10 years post-transplant [44-47]. HCT survivors tend to report worse sleep disruption compared with population norms and noncancer comparison groups (ie, .33 to .39 SD) [45,47-50], but the evidence is mixed [34,51-53]. A cross-sectional study of allogeneic recipients 1 to 10 years post-transplant found that 23% met criteria for clinical diagnosis of insomnia [44], a rate similar to that of the general population (ie, 22%) [54]. Furthermore, sleep disruption in patients treated with HCT also does not differ from that in patients treated with standard-dose chemotherapy at 8 to 9 years post-treatment [55]. Although most evidence suggests no significant change in sleep disruption after the first 100 days post-transplant, estimates of the prevalence of sleep disruption in HCT patients vary widely. At 1 year post-HCT, 14% of patients receiving allogeneic transplant with reduced-intensity conditioning and 26% of patients receiving autologous transplantation reported sleep disruption [39]. A mean of 2 years after transplant (range, 1 to 3 years), 20% of patients reported sleep disruption [56]. In contrast, 2 to 5 years after transplant, 49% of patients reported none or slight, 43% reported moderate, and 8% reported severe sleep disruption [46]. Five or more years after transplant, 44%, 42%, and 14% of patients reported none or slight, moderate, and severe sleep disruption, respectively [46]. A mean of 10 years after transplant, 14% reported moderate or severe sleep disruption [52]. An average of 13 years after transplant (range, 10 to 18), 81% of patients reported they were not bothered or only mildly bothered by sleep disruption, whereas 19% reported they were moderately or severely bothered [57]. In summary, the overall prevalence of any sleep problems after the acute transplant period (ie, after 100 days) ranges from 14% to 51%, with the prevalence of moderate problems ranging from 14% to 43% and severe problems ranging from 8% to 14%. Variability in prevalence rates likely stems from sample bias due to small sample sizes in this literature. SOCIODEMOGRAPHIC AND CLINICAL PREDICTORS OF SLEEP DISRUPTION AND DISORDERS A clinically relevant question is how to identify HCT patients at risk for sleep disruption and disorders. Risk factors for insomnia among cancer patients include female gender, anxiety, surgical treatment, and maladaptive beliefs about sleep [58]. Among HCT patients, 1 small study observed that conditioning with busulfan and cyclophosphamide was a risk factor for insomnia [44]. Risk factors for OSA in the general population include obesity, type 2 diabetes, congestive heart failure, kidney disease, and treatmentrefractory hypertension [17]. Some of the risk factors that lead to sleep disruption and disorders may be more prevalent after HCT (eg, diabetes, hypertension). Risk factors for RLS in the general population include female gender, pregnancy, low blood ferritin, high alcohol intake, poor renal function, high blood glucose levels, and obesity [42]. Although HCT patients are more likely to REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 14 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 have high (rather than low) blood ferritin, they may experience high blood glucose levels and weight gain because of treatment with corticosteroids. In addition, several autoimmune diseases are risk factors for RLS (eg, rheumatoid arthritis, multiple sclerosis, Crohn’s disease), suggesting that high levels of inflammation may play a role [42]. These findings have relevance for GVHD as a potential risk factor for RLS, although data are lacking. Thus, in general, risk factors for clinical sleep disorders include female gender, obesity, comorbidities such as diabetes and poor renal function, anxiety, and maladaptive beliefs about sleep. Regarding sleep disruption outside the context of a diagnosed sleep disorder, evidence suggests that women are more likely to endorse sleep problems than men [44]. Evidence also suggests that sleep disruption is more severe in older patients [44,59]. Systemic inflammation has been associated with worse sleep, although the sample was small and primarily consisted of autologous HCT recipients [60]. Regarding transplant type, allogeneic recipients tend to report better sleep than autologous recipients before transplant and 3 years later [33] but worse sleep during the acute transplant period [4,28,37]. Among allogeneic recipients, significant associations between GVHD and sleep disruption have not been found [47]; however, literature examining this relationship is sparse. Other clinical variables, such as bone marrow versus peripheral blood stem cell transplantation, have not shown significant differences in the prevalence of sleep problems [61]. Nevertheless, comparisons by GVHD and type of hematopoietic stem cell collection are likely underpowered because of small sample sizes. Regarding psychosocial risk factors, research is scarce, but available studies suggest that divorced HCT recipients have higher rates of sleep problems than unmarried patients [29] and unemployed recipients report worse sleep than recipients who are working at the time of assessment [29,49]. In addition, distress, depression, and anxiety are associated with worse sleep [29]. Thus, available evidence suggests that risk factors for sleep disruption outside the context of a diagnosed sleep disorder are older age, female gender, divorce, unemployment, distress, and autologous transplant. Additional research is needed to confirm these findings in larger samples. TREATMENT OF SLEEP DISRUPTION AND DISORDERS Treatments for sleep disorders are varied and depend on the underlying cause. Regarding insomnia, the National Institutes of Health Consensus and the American Academy of Sleep Medicine recommend cognitive behavioral therapy for insomnia (CBT-I) as the standard treatment [18]. Extensive research has shown that CBT-I can be as effective as some pharmacologic agents in the treatment of insomnia in the general population [62]. There have been no studies to date on the effectiveness of CBT-I specifically in patients undergoing HCT. Nevertheless, numerous well-designed studies in cancer patients have shown that CBT-I can indeed be effective in improving objectively (eg, actigraphy) and subjectively measured (eg, self-reported insomnia severity and sleep diaries) sleep disruption during and after treatment [63]. Therapeutic effects of CBT-I have been found to last for up to 12 months in cancer survivors [63]. The American Academy of Sleep Medicine recommends that when pharmacotherapy is used for insomnia, short- or intermediate-acting benzodiazepine receptor agonists or ramelteon (Rozerem), a melatonin receptor agonist, be prescribed [16]. Examples of medications in various drug classes, along with indications, contraindications, and long-term efficacy from randomized placebo-controlled trials in patients with primary insomnia, are listed in Table 3. The choice of medications within a class Q 3 of drugs should depend on patients’ symptomatology (eg, delayed sleep onset versus difficulty maintaining sleep), patients’ preferences regarding use of a controlled substance, and contraindications of the medication. It should be noted that no studies have examined pharmacotherapy for insomnia specifically in the context of HCT. The first-line treatment for OSA is positive airway pressure, which pneumatically splits the upper airway through a device worn on the nose and/or mouth during sleep [17]. Additional therapies for OSA include surgery, oral appliances, implanted upper airway stimulation devices, and behavioral strategies to lose weight, exercise, adjust sleep position, and avoid alcohol and sedatives at bedtime [17]. No studies have examined treatments for OSA among patients treated with HCT. The first-line treatment for RLS includes the dopamine agonists pramipexole and ropinirole [18]. Additional medication options include levodopa with dopa decarboxylase inhibitor, opioids, gabapentin, enacarbil, and cabergoline. Although no treatment studies for RLS have been conducted specifically among HCT recipients, pregabalin shows promise for treating RLS secondary to neuropathy and/or neuropathic pain [64]. Also, some data suggest that some antidepressants may contribute to increased risk of RLS, including citalopram, paroxetine, amitriptyline, mirtazapine, and tramadol, although evidence is mixed [18]. Thus, avoidance or discontinuation of use of these medications should be considered in patients with RLS. To our knowledge, only 1 behavioral intervention study has been conducted in HCT recipients with the primary aim of improving sleep disruption outside the context of a diagnosed sleep disorder [65]. In addition, 5 behavioral intervention studies have examined sleep disruption as a secondary outcome [66-70]. All 6 studies were randomized trials of psychoeducation, stress management, aerobic exercise, and resistance training alone or in combination during the inpatient period; 1 study also followed patients for 6 months post-HCT [66]. Samples consisted of patients receiving allogeneic HCT [67,69], autologous HCT [70], tandem autologous HCT [65], and either allogeneic or autologous HCT [66,67]. All reported null results for sleep disruption compared with usual care. Sample sizes ranged from 42 to 700. Thus, available data suggest that sleep disruption does not improve with exercise or stress management during the inpatient period. Additional studies focusing on long-term transplant survivors are needed. DISCUSSION Sleep disruption is a common problem among HCT recipients. In addition to being distressing in its own right, sleep disruption may affect other clinically important outcomes. For example, previous research in patients undergoing standard-dose chemotherapy suggests that sleep disruption occurs first in a cascade of symptoms, contributing to increases in fatigue and in turn depression [71]. In addition, preliminary research suggests that sleep disruption may negatively impact immune response and reconstitution [72], although this has not been demonstrated in the context of HCT. Taken together, these studies argue for early intervention to manage sleep disruption and disorders in HCT recipients. REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 Table 3 Medications Recommended for Treatment of Insomnia by the American Academy of Sleep Medicine [16] FDA-Approved for Sleep Onset [79] FDA-Approved for Sleep Maintenance [79] Controlled Substance Generic Available Relevant Contraindications Include [79] RCT-Demonstrated Efficacy for Insomnia up to Relevant Drug Interactions Short/intermediate acting benzodiazepine receptor agonists Eszopiclone (Lunesta) Yes Yes Yes Yes 6 mo CNS depressants, rifampicin, ketoconazole Temazepam (Restoril) Yes Yes Yes Yes 8 wk CNS depressants, hypnotics, diphenhydramine Triazolam (Halcion) Yes No Yes Yes Impaired motor/cognitive performance with higher dosage in elderly Oversedation, confusion, ataxia with higher dosage in elderly Compromised respiratory function, renal or hepatic impairment, pulmonary insufficiency 5 wk Zaleplon (Sonata) Yes No Yes Yes Conditions affecting metabolism or hemodynamic responses or compromised respiratory function 4 wk Zolpidem (Ambien) Yes No Yes Yes 8 mo Zolpidem (Ambien CR) Yes Yes Yes Yes Zolpidem (Intermezzo) No Yes Yes No Compromised respiratory function, conditions affecting metabolism or hemodynamic responses, renal or hepatic impairment, risk of impaired motor/cognitive performance in elderly Compromised respiratory function, conditions affecting metabolism or hemodynamic responses, renal or hepatic impairment, risk of impaired motor/cognitive performance in elderly Compromised respiratory function, risk of impaired motor/cognitive performance in elderly Ketoconazole, itraconazole, nefazodone, HIV protease inhibitors, medications that impair the oxidative metabolism mediated by CYP3A4 Promethazine; rifampin; CYP3A4 inducers; CYP3A4 inhibitors; cimetidine; additive CNS depression with other psychotropic medications, anticonvulsants, antihistamines, narcotic analgesics, anesthetics, ethanol, and other CNS depressants CNS depressants; other sedativehypnotics; imipramine; chlorpromazine; alcohol; sertraline; CYP3A4 inhibitors; rifampin; fluoxetine; ketoconazole Melatonin receptor agonist Ramelteon (Rozerem) Yes No No Yes Intermediate/long acting benzodiazepine receptor agonist Clonazepam (Klonopin) No No Yes Yes CNS depressants; other sedativehypnotics; imipramine; chlorpromazine; alcohol; sertraline; CYP3A4 inhibitors; rifampin; fluoxetine; ketoconazole 4 wk CNS depressants; imipramine; chlorpromazine; rifampin; ketoconazole Hepatic impairment, may affect reproductive hormones 6 mo Renal or hepatic impairment, respiratory diseases, elderly patients, glaucoma None CYP inducers, CYP1A2 inhibitors, CYP3A4 inhibitors, CYP2C9 inhibitors; donepezil; doxepin; zolpidem; CNS depressants; alcohol CYP450 inducers; propantheline; CYP3A inhibitors; alcohol; narcotics; barbiturates; hypnotics; antianxiety agents; phenothiazines; thioxanthene; butyrophenone antipsychotics; MAOIs; TCAs; anticonvulsant drugs; CNS depressants; valproic acid (continued on next page) 15 6 mo H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 Agent(s) REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Drug Class 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Drug Class Agent(s) FDA-Approved for Sleep Onset [79] FDA-Approved for Sleep Maintenance [79] Controlled Substance Generic Available Relevant Contraindications Include [79] RCT-Demonstrated Efficacy for Insomnia up to Relevant Drug Interactions Estazolam (ProSom, Eurodin) Yes No Yes Yes Renal or hepatic impairment, compromised respiratory function, depression 1 wk Flurazepam (Dalmane) Yes Yes Yes Yes 3 wk Lorazepam (Ativan) No No Yes Yes Amitriptyline No No No Yes Depression, hepatic or renal impairment, pulmonary insufficiency Compromised respiratory function, impaired renal or hepatic function, elderly Liver dysfunction CNS-acting drugs; anticonvulsants; antihistamines; alcohol; barbiturates; MAOIs; narcotics; phenothiazines; psychotropic medications; CNS depressants; smoking; CYP3A inhibitors; CYP3A inducers CNS depressants; alcohol Doxepin (Silenor) 3-6 mg No Yes No Yes Compromised respiratory function 12 wk Mirtazapine (Remeron) No No No Yes Neutropenia and hyponatremia reported, renal or hepatic impairment, conditions affecting metabolism or hemodynamic responses, elderly, may cause orthostatic hypotension None Trazodone (Oleptro) No No No Yes Hypotension and syncope reported, elderly, renal or hepatic impairment, hyponatremia may occur 1 wk None None CNS depressants; clozapine; valproate; probenecid; theophylline; aminophylline Guanethidine; CNS depressants; CYP2D6 inhibitors; TCAs; SSRIs; “caution with thyroid drugs”; disulfiram; ethchlorvynol; anticholinergics; sympathomimetics; neuroleptics; cimetidine Alcohol; CNS depressants; sedating antihistamines; CYP2C19 inhibitors; CYP2D6 inhibitors; CYP1A2 inhibitors; CYP2C9 inhibitors; cimetidine; tolazamide; sertraline MAOIs; serotonergic drugs; drugs affecting hepatic metabolism; CYP enzyme inducers; drugs metabolized by or inducers of cytochrome P450; antihypertensives known to cause hyponatremia; phenytoin; carbamazepine; hepatic metabolism inducers; cimetidine; ketoconazole; cimetidine; alcohol; diazepam; CYP3A4 inhibitors; HIV protease inhibitors; azole antifungals; erythromycin; nefazodone; warfarin Serotonergic drugs; drugs which impair serotonin metabolism; antipsychotics; dopamine agonists; serotonin precursors; CYP3A4 inhibitors; Carbamazepine; MAOIs; alcohol; barbiturates; CNS depressants; warfarin; antihypertensives; NSAIDs; aspirin; drugs that affect coagulation or bleeding; diuretics; drugs that prolong QT interval H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Sedating low-dose antidepressant 16 Table 3 (continued ) 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 Other prescription drugs No No No Yes Liver dysfunction, elderly None Gabapentin (Neurontin) Olanzapine (Zyprexa) No No No Yes None No No No Yes Liver dysfunction, hepatic impairment Hepatic impairment; prostatic hypertrophy; may cause orthostatic hypotension; leukopenia, neutropenia, and agranulocytosis reported; may cause cognitive and motor impairment Tiagabine (Gabitril) No No No Yes Incapacitating weakness reported 1 night Quetiapine (Seroquel) No No No Yes May induce orthostatic hypotension; leukopenia, neutropenia, and agranulocytosis reported; may impair physical/ mental abilities None None Serotonergic drugs; drugs which impair serotonin metabolism; caution on patients on thyroid medication; guanethidine; cimetidine; alcohol; catecholamines; anticholinergics; sympathomimetic amines; local decongestants; local anesthetics containing epinephrine; atropine; CYP2D6 inhibitors; SSRIs; TCAs Maalox; naproxen sodium; hydrocodone Diazepam; alcohol; carbamazepine; omeprazole; rifampin; CYP1A2 inducers; fluoxetine; fluvoxamine; other centrally-acting drugs; potentially hepatotoxic drugs; antihypertensives; levodopa; dopamine agonists; anticholinergic drugs; parenteral benzodiazepines Valproate; carbamazepine; phenytoin; phenobarbital; ethanol; triazolam; drugs that lower seizure threshold (antidepressants, antipsychotics, stimulants, narcotics); drugs that induce or inhibit hepatic metabolizing enzymes; highly protein-bound drugs Centrally-acting drugs; alcohol; CYP3A4 inhibitors; CYP3A4 inducers; antihypertensives; levodopa; dopamine agonists; drugs known to cause electrolye imbalance; drugs known to prolong QTc interval (eg, antiarrhythmics, antipsychotics, antibiotics); anticholinergic medications FDA indicates U.S. Food and Drug Administration; RCT, randomized controlled trial; CNS, central nervous system; MAOI, monoamine oxidase inhibitor; SSRI, selective serotonin reuptake inhibitor; TCA, tricyclic antidepressant. H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 REV 5.2.0 DTD YBBMT53433_proof 5 May 2014 6:32 pm ce Trimipramine (Surmontil) 17 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 18 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 H.S.L. Jim et al. / Biol Blood Marrow Transplant xxx (2014) 1e20 Effective management of sleep disruption may be difficult in the inpatient setting due to environmental factors that can interrupt sleep. Environmental interventions to improve sleep among inpatients may be more effective than patient-based interventions (eg, minimizing of nighttime vital signs monitoring). A study conducted by Sharda et al. [73] suggests that vital sign monitoring might not be necessary for HCT patients with low-risk profiles (ie, lack of daytime fever and central nervous system complaints) and may lead to improved sleep and health. In contrast, use of a hypnotic (zolpidem) has been associated with increased inpatient falls [74]. Regarding outpatient sleep management, several pharmacologic and behavioral management options are available. National Comprehensive Cancer Network Survivorship guidelines recommend screening for sleep disruption at regular intervals, particularly when there has been a change in clinical status or treatment [75]. Insomnia causing decreased daytime functioning, worse quality of life, worsening of complaints, or distress to the patient should be treated with CBT, sleep hygiene education, medication, and/ or referral to a sleep specialist [75]. In light of the strong evidence base for CBT-I in cancer patients, we believe it should be considered as a first choice for treatment of chronic sleep disruption in HCT recipients. CBT-I lacks side effects, medication interactions, and potential for abuse. In addition, it may be more acceptable than pharmacologic treatment for HCT recipients who would prefer to avoid additional medication. Referral to a clinical psychologist board certified in behavioral sleep medicine is recommended for patients interested in CBT-I. For patients who are unwilling or unable to engage in CBT-I or for whom it is not effective or feasible, pharmacologic treatment is a viable alternative. Previous research has found that sleep medications commonly prescribed to cancer patients are lorazepam (31.4%) and zolpidem (29.4%) [76], although, as noted previously, no evidence exists for their effectiveness in HCT recipients. Patients with OSA should be referred to a sleep medicine physician, whereas patients with RLS should be treated with medication and/or referred to a sleep medicine physician [75]. Because of the specialized needs of HCT patients, it is advisable that patients with sleep disorders be managed by an interdisciplinary team consisting of the transplant physician, sleep medicine physician, and/or clinical psychologist. Additional research is clearly needed regarding sleep disruption in HCT recipients. Longitudinal studies should be conducted to determine prevalence, chronicity, and natural course of sleep disruption and disorders secondary to HCT using well-validated objective and self-report measures of sleep as well as clinical diagnostic criteria. The prevalence of sleep disruption and disorders in HCT recipients should be compared with population normative data, because they are also common among individuals without cancer. Future studies should also aim to identify genetic, sociodemographic, and clinical risk factors for sleep disruption and disorders secondary to HCT. Well-designed randomized controlled trials are needed to test the efficacy of behavioral and pharmaceutical management of sleep problems in HCT recipients. In summary, sleep disruption is a common, distressing, and under-recognized problem among HCT recipients. Clinical efforts to proactively manage sleep disruption and disorders have the potential to improve overall quality of life in this population. Until more research is conducted with a specific focus on HCT recipients, strategies to manage sleep disruption and disorders should be adapted from the current evidence base in cancer patients and the general population. ACKNOWLEDGMENTS Financial disclosure: Supported by National Cancer Insti- Q 1 tute grant K07 CA138499 (to H.S.L.J.), National Cancer Institute grant K07 CA132916 (to O. P.), and the Stanford Cancer Q 13 Institute Seed Award (to O. P.). Conflict of interest statement: ---. Q4 REFERENCES Q5 1. Pasquini MC, Wang Z, Horowitz MM, Gale RP. 2010 Report from the Center for International Blood and Marrow Transplant Research (CIBMTR): current uses and outcomes of hematopoietic cell transplants for blood and bone marrow disorders. Clin Transpl. 2010;87-105. Q6 2. American Psychiatric Association. Diagnostic and statistical manual of mental disorders, 5th ed. Washington, DC: American Psychiatric Association; 2013. 3. Bevans MF, Mitchell SA, Marden S. 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