Gynecologic Cancer ASCO/ONS Highlights 2011 Association of Northern California Oncologists Lee-may Chen, MD Professor of Clinical Obstetrics, Gynecology, & Reproductive Sciences Division of Gynecologic Oncology UCSF Helen Diller Family Comprehensive Cancer Center Objectives Review, summarize, and interpret new advances and implement changes in the treatment of gynecologic malignancies presented at the 2011 ASCO Annual Meeting New Advances in Gyn Malignancies Biological targets Angiogenesis: Bevacizumab, Cabozantinib, Sorafenib, Aflibercept, Temsirolimus DNA damage repair: Olaparib, Iniparib Folate receptor: Farletuzemab Trabecditin Pegylated liposomal doxorubicin and carboplatin (C-PLD) versus paclitaxel and carboplatin (C-P) in platinum-sensitive ovarian cancer (OC) patients (pts): Treatment at recurrence and overall survival (OS) final analysis from CALYPSO phase III GCIG trial Phase III trial comparing pegylated liposomal doxorubicin & carboplatin with paclitaxel & carboplatin, n=976, 4/05-10/07 Median PFS: 11.3mo vs 9.4mo, HR 0.82, p=0.005 Most patients received subsequent treatment, but there was an imbalance of crossover: C-PLD P, 34%, C-P PLD, 57% Median follow-up: 40mo. Median OS: 30.7mo vs 33.0mo, HR 0.99, p=0.87 Conclusion: Crossover treatment rate was higher in C-P, OS was similar Pujade-Lauraine et al, J Clin Oncol 2010 Abstract No: 5052 OCEANS: A randomized, double-blinded, placebocontrolled phase III trial of chemotherapy with or without bevacizumab (BEV) in patients with platinum-sensitive recurrent epithelial ovarian (EOC), primary peritoneal (PPC), or fallopian tube cancer (FTC). C Aghajanian, NJ Finkler, T Rutherford, DA Smith, J Yi, Parmar, LR Nycum, MA Sovak H Memorial Sloan-Kettering Cancer Center, New York, NY; Florida Hospital Gynecologic Oncology, Florida Hospital Cancer Institute, Orlando, FL; Yale University School of Medicine, New Haven, CT; Northwest Cancer Specialists, Vancouver, WA; Genentech Inc., South San Francisco, CA; Forsyth Regional Cancer Center, Winston-Salem, NC Abstract No: LBA5007 OCEANS: Rationale Bevacizumab A humanized anti-VEGF monoclonal antibody Single-agent activity in recurrent ovarian cancer 21% response rate in 2nd/3rd line treatment Carboplatin & Gemcitabine Improved response rate and PFS over single agent Carboplatin 47% vs 31% ORR, p=0.0016 8.6 vs 5.8mo PFS, HR 0.72 (p=0.0031) Burger et al, J Clin Oncol 2007 Pfisterer et al, J Clin Oncol, 2006 Abstract No: LBA5007 OCEANS: Treatment exposure Median # cycles CG+Pl (n=233) CG+Bev (n=247) Chemotherapy 6 (1-10) 6 (1-10) Bevacizumab/Placebo 10 (1-36) 12 (1-43) Abstract No: LBA5007 Abstract No: LBA5007 OCEANS: Toxicities AEs of special interest CG+Pl n=233 CG +Bev n=247 Neutropenia, > gr3 56 58 Febrile neutropenia 2 2 Hypertension, > gr3 <1 17 Fistula/abscess <1 2 GI perforation 0 0 Proteinuria 1 9 2 GI perforations 69d after bevacizumab 23% of discontinuation in CG + Bev were due to HTN, proteinuria Abstract No: LBA5007 OCEANS: Conclusions Carboplatin, gemcitabine, & bevacizumab, followed by bevacizumab until progression provides a clinically meaningful benefit over chemotherapy alone in platinumsensitive recurrent ovarian carcinoma. ORR: 78.5% vs 57.4%, p< 0.0001 PFS: 12.4mo vs 8.4mo, HR 0.48, p< 0.0001 OS: 35.5mo vs 29.9mo, HR 0.75, p=0.094, not yet mature Safety data A new option for recurrent platinum-sensitive ovarian carcinoma Abstract No: LBA5007 Result of interim analysis of overall survival in the GCIG ICON7 phase III randomized trial of bevacizumab in women with newly diagnosed ovarian cancer ICON7: High risk and advanced ovarian cancer treated with debulking surgery, then: Taxol/Carboplatin x 6 cycles, followed by bevacizumab through 18 cycles versus no further treatment N=1528, 12/06-2/09 PFS: 19.0mo vs 17.3mo, HR 0.81, p=0.0041 Median follow-up: 28 mo. Overall HR 0.84, p=0.099 Suboptimal Stage III + Stage IV OS: 36.6mo vs 28.8mo, HR 0.64, p=0.0022 Conclusion: Overall trend for improvement by adding Bev Abstract No: LBA5006 Phase II randomized placebo-controlled study of olaparib (AZD2281) in patients with platinum-sensitive relapsed serous ovarian cancer (PSR SOC) JA Ledermann, P Harter, C Gourley, M Friedlander, IB Vergote, GJS Rustin, C Scott, W Meier, R ShapiraFrommer, T Safra, D Matei, E Macpherson, C Watkins, J Carmichael, U Matulonis UCL Cancer Institute and UCL Hospitals, London, United Kingdom; Kliniken Essen Mitte, Essen, Germany; Edinburgh Cancer Research UK Centre, Edinburgh, United Kingdom; Department of Medical Oncology, Prince of Wales Hospital and Prince of Wales Clinical School, UNSW, Sydney, Australia; University Hospital Leuven, Leuven, Belgium; Mount Vernon Cancer Centre, Middlesex, United Kingdom; The Walter and Eliza Hall Institute of Medical Research, Royal Melbourne Hospital, Victoria, Australia; Evangelical Hospital, Düsseldorf, Germany; Oncology Institute, Chaim Sheba Medical Center, Ramat-Gan, Israel; Department of Oncology, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel; Indiana University Simon Cancer Center, Indianapolis, IN; AstraZeneca, Macclesfield, United Kingdom; Dana-Farber Cancer Institute, Boston, MA Abstract No: 5003 PARP Inhibitors Selectively potent in BRCA1/2 deficient tumors 33-41% RR in Phase II study in recurrent ovarian cancer 24% RR in BRCA1/2 intact ovarian cancer Audeh et al, Lancet 2010 Gelmon et al, ASCO 2010 Olaparib Maintenance Platinum sensitive recurrent ovarian carcinoma with stable complete/partial response 2 or more prior platinum-containing regimens Stratified by time to progression and response in last platinum regimen, Jewish descent BRCA testing not required Olaparib: 400mg PO BID vs Placebo Evaluation for progression by RECIST criteria Primary objective: PFS Abstract No: 5003 Olaparib Maintenance: Results n=265 16 countries Median PFS: 8.4mo vs 4.8mo, HR 0.35, p < 0.00001 Median TTP: 8.3mo vs 3.7mo 50% olaparib, 16% placebo patients remain on treatment Abstract No: 5003 Olaparib Maintenance: Toxicities Adverse events Nausea Fatigue Vomiting Anemia Placebo n=129 Olaparib n=136 35% 38% 14% 5% 68% 49% 32% 17% 9 patients on olaparib had > gr3 fatigue & 7 patients had > gr3 anemia 4 patients on placebo had > gr3 fatigue & 4 patients had > gr3 abdominal pain The majority of AEs were grade 1 or 2 Abstract No: 5003 Olaparib Maintenance: Conclusions Maintenance treatment with olaparib provided a significant improvement in progression-free survival in platinumsensitive recurrent ovarian carcinoma. PFS: 8.4mo vs 4.8mo, HR 0.35, p< 0.00001 TTP: 8.3mo vs 3.7mo, HR 0.35, p<0.00001 OS: not yet mature Well tolerated A new option for maintenance treatment in recurrent platinum-sensitive ovarian carcinoma Abstract No: 5003 Iniparib A phase II trial of iniparib (BSI-201) in combination with gemcitabine/carboplatin (GC) in patients with platinum-sensitive recurrent ovarian cancer n=41, 71% ORR, 9.4mo PFS A phase II trial of iniparib (BSI-201) in combination with gemcitabine/carboplatin (GC) in patients with platinum-resistant recurrent ovarian cancer n=48, 32% ORR, 5.9mo PFS Conclusions: Activitity without unexpected toxicities Abstract No: 5004 Abstract No: 5005 Effect of screening on ovarian cancer mortality in the Prostate, Lung, Colorectal, and Ovarian (PLCO) cancer randomized screening trial SS Buys, E Partridge, A Black, C Johnson, L Lamerato, C Isaacs, D Reding, R Greenlee, B Kessel, M Fouad, D Chia, L Ragard, J Rathmell, P Hartge, P Pinsky, G Izmirlian, J Xu, P Prorok, CD Berg Huntsman Cancer Institute at the University of Utah, Salt Lake City, UT; University of Alabama at Birmingham, Birmingham, AL; National Cancer Institute, Bethesda, MD; Henry Ford Health System, Detroit, MI; Henry Ford Hospital, Detroit, MI; Lombardi Comprehensive Cancer Center, Washington, DC; Marshfield Clinic Research Foundation, Marshfield, WI; Marshfield Medical Center, Marshfield, WI; Pacific Health Research Education Institute, Honolulu, HI; Minority Health and Health Disparities Research Center, Birmingham, AL; Department of Pathology and Laboratory Medicine, Los Angeles, CA; Westat, Inc., Rockville, MD; Information Management Services, Inc., Bethesda, MD; Division of Cancer Prevention, NCI, Bethesda, MD Abstract No: 5001 PLCO: Background 11/93-7/01, n=78,216 women ages 55-74 10 centers nationally Intervention: baseline, then annual CA125 (5 yrs) and transvaginal ultrasound (3 yrs) Abstract No: 5001 PLCO: Patient Characteristics 88% White 27% Prior hysterectomy 54% Prior oral contraceptive pill use 63% Prior hormone therapy 9% Nulliparous 4% Prior breast cancer 17% Family history of breast or ovarian cancer 85% 73% compliance with screening Abstract No: 5001 PLCO: Results CA125: 1.4-1.8% positive screen Transvaginal ultrasound: 2.9-4.6% positive screen Ovarian cancers diagnosed 212 cases in screening arm (5.7 per 10,000 person years), 77% Stage III/IV 176 in usual care arm (4.7 per 10,000 person years), 78% Stage III/IV RR 1.21, 95% CI 0.99-1.48 Abstract No: 5001 PLCO: Results Ovarian cancer deaths 118 in screening arm (3.1 per 10,000 person years) 100 in usual care (2.6 per 10,000 person years) RR 1.18, 95% CI 0.82-1.71 All cause mortality, RR 1.01, 95% CI 0.96-1.06 Abstract No: 5001 PLCO: Results 3285 false positive CA125/ultrasound tests 1080 (32.9%) underwent surgery 222 distinct major complications 20.6 complications per 100 surgical procedures -Infection, Surgical, Cardiovascular or pulmonary Oophorectomy procedures 1771 (7.7%) in screening arm 1304 (5.8%) in usual care arm RR 1.33, 95% CI 1.24-1.43 Abstract No: 5001 PLCO: Conclusions Annual CA125 and transvaginal ultrasound screening does not reduce disease-specific mortality in average risk postmenopausal women. Screening does increase invasive medical procedures, with associated harms and complications. Abstract No: 5001 Ovarian Cancer Management Screening Suspicious Mass Suspicious Symptoms Hereditary Risks Examination, Imaging, CA125 Laparotomy vs laparoscopy Staging Cytoreduction Bx Neoadjuvant chemotherapy IV Chemotherapy, possible dose dense IV/IP Chemotherapy Possible Interval debulking surgery Clinical follow-up Maintenance chemotherapy Recurrence therapy ASCO 2011: Gyn Takeaway OCEANS: Consider bevacizumab in recurrent ovarian cancer PARP inhibitors: Consider olaparib for maintenance in ovarian cancer Screening: Annual CA125 & USN ineffective for detecting ovarian cancer in low risk women