Forging a new standard in metastatic CRC Eric Van Cutsem University Hospital Gasthuisberg Leuven, Belgium Advances in the treatment of mCRC 1980 1985 1990 1995 2000 2005 2010 Best supportive care 5-FU Irinotecan Capecitabine Oxaliplatin Bevacizumab and EGFR inhibitors 35 30 Months 25 20 15 10 Median OS 5 0 1980 1985 1990 1995 2000 2005+ mCRC = metastatic colorectal cancer; 5-FU = 5-fluorouracil; MoAbs = monoclonal antibodies; OS = overall survival Capecitabine combinations are effective in the metastatic setting CAPOX first line (n=80) CAPIRI second line (n=34) CAPIRI first line (n=77) CAPOX second line (n=31) ORR (%) 51 21 41 13 PFS (months) 6.2 5.2 7.1 4.3 OS (months) 16.5 12.9–18.5 18.8 15.7–23.7 CAPOX: capecitabine 1,000mg/m2 b.i.d. day 1–14 plus oxaliplatin 70mg/m2 day 1, 8 every 3 weeks CAPIRI: capecitabine 1,000mg/m2 b.i.d. day 1–14 plus irinotecan 80–100mg/m2 day 1, 8 every 3 weeks ORR = overall response rate PFS = progression-free survival b.i.d. = twice daily Grothey A, et al. J Clin Oncol 2004;22:254 (Abstract 3534) Efficacy of capecitabine versus 5-FU/LV: meta-analysis of survival in six clinical trials Median OS, months (95% CI) Hazard ratio (HR) (95% CI) 5-FU-based regimens (n=3,074) Capecitabine-based regimens (n=3,097) 22.5 23.1 (21.3–23.5) (22.1–24.4) 0.96 0.90–1.02 Capecitabine is therapeutically noninferior to 5-FU/LV in patients with colorectal or gastric cancer CI = confidence interval Cassidy J, et al. Presented at ASCO GI 2008 (Abstract 340) Bevacizumab adds strong benefit to all regimens 5-FU/LV PFS + bevacizumab OS IFL + bevacizumab FOLFOX + bevacizumab FOLFIRI + bevacizumab FOLFOX/FOLFIRI + bevacizumab 0 5 10 15 Months 20 25 LV = leucovorin; IFL = irinotecan, 5-FU, leucovorin; FOLFOX = leucovorin, 5-FU, oxaliplatin FOLFIRI = leucovorin, 5-FU, irinotecan 30 Linking the mechanism of action of bevacizumab with clinical benefit in mCRC EARLY EFFECTS 1 Regression Decrease tumour size 2 Normalisation Improve delivery of chemotherapy CONTINUED EFFECTS 3 Inhibition Suppress new vessel growth Suppress regrowth via vessel ‘scaffolds’ Enable metastasectomy Increase PFS Increase OS Irinotecan-containing regimens with bevacizumab and/or capecitabine AVF2107g: bevacizumab plus first-line IFL: superior PFS plus OS Median PFS 6.2 vs 10.6 months HR=0.54 (p<0.0001) 1.0 Median OS 15.6 vs 20.3 months HR=0.66 (p<0.001) 1.0 IFL + bevacizumab 0.8 IFL + placebo OS estimate PFS estimate 0.8 IFL + bevacizumab 0.6 0.4 0.2 IFL + placebo 0.6 0.4 0.2 6.2 0 0 10.6 10 20 Months 15.6 0 30 0 10 20.3 20 Months 30 40 Hurwitz H, et al. N Engl J Med 2004;350:2335–42 Bevacizumab plus FOLFIRI has been evaluated in several phase II trials BICC-C1 Samelis2 Kopetz3 Treatment regimen FOLFIRI or mIFL + bevacizumab Bevacizumab + IFL Bevacizumab + FOLFIRI Indication First-line Second-line First-line Primary endpoint PFS Not available PFS Study 1Fuchs mIFL = irinotecan, 5-FU, leucovorin CS, et al. J Clin Oncol 2007;25:4779–86 GF, et al. ASCO GI Cancers Symposium 2007 (Abstract 394) 3Kopetz S, et al. ASCO GI Cancers Symposium 2007 (Abstract 4089) 2Samelis Phase IV trial of bevacizumab plus FOLFIRI (AVIRI): study design Patients with previously untreated, unresectable mCRC (n=209) Bevacizumab + FOLFIRI The largest trial of bevacizumab plus FOLFIRI International multicentre trial: 31 centres Primary endpoint: PFS Secondary endpoints: OS, ORR and safety Treatment until progression or unacceptable toxicity Ackland S, et al. Presented at ASCO GI 2008 (Abstract 463) AVIRI: efficacy summary (ITT population) Parameter n=209 Median PFS, months (95% CI) 11.1 (10.3–12.1) Median OS, months (95% CI) 22.2 (20.5–25.9) ORR (%) Complete response (CR) Partial response (PR) 53.1 3.8 49.3 Stable disease (SD) (%) 32.5 Progressive disease (PD) (%) Disease control rate (%) 7.7 85.6 Median PFS and OS is comparable to that observed with bevacizumab plus IFL in the pivotal AVF2107g trial ITT = intent to treat Ackland S, et al. Presented at ASCO GI 2008 (Abstract 463) AVIRI: safety summary Selected grade 3–5 adverse event (AE) n=209 (%) Bleeding 4 Hypertension 5 Proteinuria 2 Arterial thromboembolism event (ATE) 4 Gastrointestinal (GI) perforation 2 Wound-healing complications <1 The safety profile of bevacizumab plus FOLFIRI is consistent with that reported for bevacizumab plus other standard chemotherapy regimens Ackland S, et al. Presented at ASCO GI 2008 (Abstract 463) BICC-C: bevacizumab plus irinotecan-based chemotherapy R Initial design Amended design FOLFIRI (n=144) Bevacizumab + FOLFIRI (n=60) mIFL (n=141) n=430 CAPIRI (n=145) R n=117 Bevacizumab + mIFL (n=57) Protocol amended due to approval of bevacizumab Primary endpoint: PFS Fuchs CS, et al. J Clin Oncol 2007;25:4779–86 BICC-C: bevacizumab plus irinotecanbased chemotherapy – efficacy Before protocol amendment Regimen Efficacy Median PFS (months) FOLFIRI mIFL CAPIRI After protocol amendment Bevacizumab + FOLFIRI mIFL 7.6 5.9 5.8 Median OS (months) 23.1 17.6 18.9 28 19.2 ORR (%) 47 43 39 58 53 11.2 8.3 Preliminary data suggest that FOLFIRI plus bevacizumab has superior efficacy to mIFL plus bevacizumab – results are comparable to those reported in AVF2107g Fuchs CS, et al. J Clin Oncol 2007;25:4779–86 Fuchs CS, et al. J Clin Oncol 2007;26:689–90 Bevacizumab plus FOLFIRI in first-line mCRC: impact on PFS Tournigand FOLFIRI n=109 BEAT FOLFIRI + bevacizumab n=504 BRiTE FOLFIRI + bevacizumab n=280 AVIRI FOLFIRI + bevacizumab n=209 Kopetz FOLFIRI + bevacizumab n=41 BICC-C FOLFIRI + bevacizumab n=57 0 2.5 5.0 7.5 Months 10.0 12.5 15.0 Tournigand C, et al. J Clin Oncol 2004;22:229–37 Berry S, Van Cutsem E, et al. Eur J Cancer Suppl 2007;5:241 (Abstract P#3020) Kozloff M, et al. Presented at ASCO GI 2007 (Abstract 375) Sobrero A, et al. Eur J Cancer Suppl 2007;5:254 (Abstract P#3060) Kopetz S, et al. Presented at ASCO GI 2007 (Abstract 4089) Fuchs CS, et al. J Clin Oncol 2007;25:4779–86 Oxaliplatin-containing regimens with bevacizumab and/or capecitabine E3200: bevacizumab second line: superior PFS plus OS with FOLFOX4 Median PFS 4.7 vs 7.3 months HR=0.61 (p<0.0001) 1.0 0.8 Median OS 10.8 vs 12.9 months HR=0.75 (p=0.0011) 1.0 0.8 FOLFOX4 + bevacizumab FOLFOX4 + bevacizumab FOLFOX4 OS estimate PFS estimate FOLFOX4 0.6 0.4 0.2 0.6 0.4 0.2 4.7 7.3 0 10.8 12.9 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Months 0 3 6 9 12 15 18 21 24 27 30 33 36 Months Giantonio BJ, et al. J Clin Oncol 2007;25:1539–44 CAPOX is equivalent to FOLFOX in phase II/III studies ORR (%) n PFS (months) OS (months) CAPOX FOLFOX CAPOX FOLFOX CAPOX FOLFOX AIO1 476 47 54 7.1 8.0 16.8 18.2 TTD2 348 37 46 8.9 9.5 18.1 20.8 ML169873 306 42 46 8.8 9.3 19.9 20.5 NO169664,5 2,034 46 49 8.0 8.5 19.8 19.6 17.5 4.7 4.8 11.9 12.6 33 6.4 6.2 — — NO169676 627 20.1 SICOG04017 322 1Porschen 34 R, et al. J Clin Oncol 2007;25:4217–23; 2Díaz-Rubio E, et al. J Clin Oncol 2007;25:4224–30; 3Ducreux M, et al. J Clin Oncol 2007;25(Suppl. 18):170s (Abstract 4029) 4Cassidy J, et al. ASCO GI 2007 (Abstract 270); 5Cassidy J, et al. J Clin Oncol 2007;25(Suppl. 18) (Abstract 4030); 6Rothenberg ML, et al. J Clin Oncol 2007;25(Suppl. 18):171s (Abstract 4031); 7Comella P, et al. Presented at ASCO GI 2008 (Abstract 344) Phase II trial of first-line bevacizumab plus CAPIRI or CAPOX (AIO): study design Previously untreated mCRC (n=255) CAPOX + bevacizumab 7.5mg/kg every 3 weeks PD or toxicity CAPIRI + bevacizumab 7.5mg/kg every 3 weeks PD or toxicity Treatment (3-week cycle) – patients in arm A receive bevacizumab 7.5mg/kg (day 1) plus oxaliplatin 130mg/m2 (day 1) and capecitabine 1,000mg/m2 (b.i.d. day 1–14) – patients in arm B receive bevacizumab 7.5mg/kg (day 1) plus irinotecan 200mg/m2 (day 1) and capecitabine 800mg/m2 (b.i.d. day 1–14) PD = progressive disease Schmiegel WH, et al. J Clin Oncol 2007;25(Suppl. 18):172s (Abstract 4034) Phase II trial of first-line bevacizumab plus CAPIRI or CAPOX (AIO): efficacy Bevacizumab + Bevacizumab CAPOX + CAPIRI (n=118) (n=112) Outcome (%) ORR CR PR 45 5 40 47 4 43 SD 28 23 Progression-free at 6 months 74 80 Schmiegel WH, et al. J Clin Oncol 2007;25 (Suppl. 18):172s (Abstract 4034) Phase II trial of first-line bevacizumab plus CAPIRI or CAPOX (AIO): safety Bevacizumab + CAPOX (n=117) 16 13 6 Bevacizumab + CAPIRI (n=112) 13 0 4 Vomiting 3 4 Fever Neutropenia Thrombocytopenia 1 2 4 0 4 0 Fatigue 2 2 Ileus Alopecia 2 0 1 1 Grade 3/4 AE (%) Diarrhoea Sensory neuropathy Hand-foot syndrome CAPIRI and CAPOX have similar safety when combined with bevacizumab Schmiegel WH, et al. J Clin Oncol 2007;25 (Suppl. 18):172s (Abstract 4034) Phase III trial of CAPOX/FOLFOX4 ± bevacizumab (NO16966): study design Recruitment June 2003 – May 2004 Recruitment February 2004 – February 2005 CAPOX (n=317) CAPOX + placebo (n=350) CAPOX + bevacizumab (n=350) FOLFOX4 (n=317) FOLFOX4 + placebo (n=351) FOLFOX4 + bevacizumab (n=349) Initial two-arm open-label study (n=1,000) Protocol amended to 2 x 2 placebo-controlled design after bevacizumab phase III data became available (n=1,400) Primary endpoints – at least equivalent PFS with CAPOX versus FOLFOX4 – superior PFS with bevacizumab plus CAPOX/FOLFOX4 versus CAPOX/FOLFOX4 Saltz L, et al. J Clin Oncol 2007;25 (Suppl. 18):170s (Abstract 4028) NO16966: PFS – chemotherapy plus bevacizumab (general and on-treatment populations) 1.0 FOLFOX4 or CAPOX + bevacizumab FOLFOX4 or CAPOX + placebo PFS estimate 0.8 On treatment: HR=0.63 (97.5% CI: 0.52–0.75) p<0.0001 0.6 General: HR=0.83 (97.5% CI: 0.72–0.95) p=0.0023 0.4 0.2 0 0 5 10 15 20 PFS (months) Bevacizumab-containing arm: separation occurs between the PFS for general versus on-treatment populations after 6 months (vertical arrow) Saltz L, et al. J Clin Oncol 2007;25(Suppl. 18):170s (Abstract 4028) NO16966: bevacizumab first-line – PFS plus OS with CAPOX/FOLFOX4 Median PFS 8.0 vs 9.4 months HR=0.83 (p=0.023) 1.0 Median OS 19.9 vs 21.2 months HR=0.89 (p=0.0769) 1.0 CAPOX/FOLFOX4 + bevacizumab CAPOX/FOLFOX4 + placebo CAPOX/FOLFOX4 + placebo 0.8 OS estimate 0.8 PFS estimate CAPOX/FOLFOX4 + bevacizumab 0.6 0.4 0.2 0.6 0.4 0.2 8.0 9.4 0 19.9 0 0 5 10 15 Months 20 25 0 6 12 21.2 18 24 30 36 Months Saltz L, et al. Proc World Congress on Gastrointestinal Cancer 2007 (Abstract O-0032) NO16966: efficacy results for superiority – major points Bevacizumab provides significant/superior PFS when added to oxaliplatin-based chemotherapy regimens Treatment until progression is crucial to demonstrate full potential of bevacizumab Analyses of withdrawal data and PFS on treatment show excellent efficacy for bevacizumab IRC analysis clearly demonstrates superior PFS for bevacizumab in all treatment groups IRC = independent review committee NO16966: bevacizumab is well tolerated when combined with oxaliplatin- or capecitabine-based regimens F O L F O X 4 /C A P O X + p la c e b o n = 6 7 5 (% ) G ra d e 3 /4 A E F O L F O X 4 /C A P O X + b e va c iz u m a b n = 6 9 4 (% ) A n y g ra d e 3 /4 A E 75 80 G I p e rfo ra tio n s <1 <1 B le e d in g 1 2 ATE 1 2 H yp e rte n s io n 1 4 P ro te in u ria – <1 W o u n d -h e a lin g c o m p lic a tio n <1 <1 D is c o n tin u a tio n s d u e to a n a d v e rs e e ve n t 21 31 A ll-c a u s e 6 0 -d a y m o rta lity 1 .6 2 T re a tm e n t-re la te d m o rta lity u p to 2 8 d a ys a fte r la s t d o s e 1 .5 2 Saltz L, et al. J Clin Oncol 2007;25 (Suppl. 18):170s (Abstract 4028) Bevacizumab in the clinical setting Data from BEAT and BRiTE Bevacizumab plus first-line chemotherapy in clinical practice: BEAT and BRiTE BEAT1 Patients with previously untreated, unresectable mCRC (n=1,914) Bevacizumab + chemotherapy PD Bevacizumab + chemotherapy PD BRiTE2 Patients with previously untreated, unresectable mCRC (n=1,953) 1Berry S, Van Cutsem E, et al. Eur J Cancer Suppl 2007;5:241 (Abstract P#3020) 2Grothey A, et al. J Clin Oncol 2007;25(Suppl. 18):172s (Abstract 4036) Bevacizumab adds clinical benefit when combined with chemotherapy: BEAT and BRiTE BEAT BRiTE 10.9 n=1,914 Overall 10.1 n=1,953 11.6 n=503 FOLFIRI 10.9 n=280 11.2 n=552 FOLFOX 10.0 n=1,092 11.0 n=346 CAPOX 11.2 n=94 0 2.5 5.0 7.5 PFS (months) 10.0 Berry S, Van Cutsem E, et al. Presented at ASCO GI 2008 (Abstract 350) Kozloff M, et al. Presented at ASCO GI 2007 (Abstract 375) BRiTE and BEAT: serious AEs of special interest to bevacizumab B R iT E 1 n = 1 ,9 5 3 (% ) E ve n t F irs t B E A T 2 n = 1 ,9 1 4 (% ) H yp e rte n s io n 1 9 .4 4 .8 G I p e rfo ra tio n 1 .8 1 .9 B le e d in g o r w o u n d -h e a lin g c o m p lic a tio n NR 1 .0 ATE 1 .8 1 .1 B le e d in g e v e n t 2 .4 * 2 .8 *Grade 3/4 No new safety concerns for bevacizumab therapy have been identified 1Grothey NR = no response A, et al. J Clin Oncol 2007;25(Suppl. 18):172s (Abstract 4036) A, Van Cutsem E, et al. J Clin Oncol 2007;25(Suppl. 18): 181s (Abstract 4072) 2Kretzschmar BRiTE: bevacizumab increases survival post first progression Post-progression therapy: Bevacizumab post PD (n=642) No bevacizumab post PD (n=531) No treatment (n=253) 1.0 OS estimate 0.8 0.6 0.4 Post-progression bevacizumab HR=0.48 (0.41–0.57) p<0.001 0.2 12.6 0 0 5 10 19.9 15 20 Months 31.8 25 30 35 Grothey A, et al. J Clin Oncol 2007;25(Suppl. 18):172s (Abstract 4036) Withdrawal of anti-VEGF therapy results in vessel regrowth CD31 Untreated AG-013736, 7 days Withdrawal, 2 d Withdrawal, 7 d RIP-Tag2 Continue anti-angiogenic therapy to avoid vessel regrowth VEGF = vascular endothelial growth factor Mancuso MR, et al. J Clin Invest 2006;116:2610–21 Bevacizumab in the neoadjuvant setting Potential use of neoadjuvant bevacizumab Bevacizumab improves outcomes and has potential to increase metastasectomy rates Studies including selected patients (liver metastases only, no extrahepatic disease) (r=0.96, p=0.002) 0.6 Resection rate 0.5 0.4 Studies including all patients with mCRC (solid line) (r=0.74, p<0.001) 0.3 0.2 Phase III studies including all patients in mCRC (dashed line) (r=0.67, p=0.024) 0.1 0 0.3 0.4 0.5 0.6 0.7 Response rate 0.8 0.9 Folprecht G, et al. Ann Oncol 2005;16:1311–9 Potential use of neoadjuvant bevacizumab (cont’d) Impaired wound healing and liver regeneration have been associated with anti-VEGF therapies Using bevacizumab in patients who may become eligible for surgery raises the question of scheduling/best practice Bevacizumab in mCRC patients undergoing metastasectomy: retrospective analysis Retrospective analysis of 1,186 patients with mCRC Post operative complication, n (%) Any Hepatobiliary Wound Chemotherapy (n=44) Bevacizumab + chemotherapy (n=81) p value 19 (43) 40 (49) 0.51 5 (11) 4 (5) 0.20 11 (25) 23 (28) 0.68 Bevacizumab does not increase the risk of postoperative complications in patients undergoing metastasectomy with curative intent Kesmodel SV, et al. Presented at ASCO GI 2007 (Abstract 234) BEAT: surgery with curative intent Overall population: rates of potentially curative hepatic metastectomy 10 9.6 Patients with liver metastases only: rates of potentially curative hepatic metastectomy 20.3 20 Hepatic metastectomy* Hepatic metastectomy with no residual disease (R0)** 7.3 15 6.2 5.6 5.3 5 Patients (%) Patients (%) 7.0 15.4 15.2 14.3 12.1 11.7 10 0 n=27 n=33 n=54 n=71 n=85 n=107 n=34 n=43 n=76 n=99 n=114 n=145 5 0 Bevacizumab Bevacizumab Bevacizumab + chemo. + chemo. + chemo. (all) including including oxaliplatin irinotecan (n=1,914) (n=946) (n=662) *Secondary endpoint; **Prospectively assessed Updated data will be presented at the meeting Bevacizumab Bevacizumab Bevacizumab + chemo. + chemo. + chemo. (all) including including oxaliplatin irinotecan (n=704) (n=349) (n=230) Berry S, Van Cutsem E, et al. Eur J Cancer Suppl. 2007;5:241 (Abstract P#3020) NO16966: surgery with curative intent CAPOX/FOLFOX4 + placebo CAPOX/FOLFOX4 + bevacizumab ITT population Patients with liver metastases only 10 19.2 20 8.4 6.1 Patients (%) Patients (%) 15 5 12.9 10 5 0 0 Placebo (n=701) Bevacizumab (n=699) Placebo (n=178) Bevacizumab (n=177) Saltz L, et al. Proc World Congress on Gastrointestinal Cancer 2007 (Abstract O-0032) Neoadjuvant bevacizumab in patients with CRC: single-centre, non-randomised trial – postoperative liver function and regeneration Initial resection site Full transverse image Postoperative liver function and regeneration, assessed 3 months after surgery by chemotherapy, normal in all but one patient Gruenberger T, et al. Ann Oncol 2006;17(Suppl. 9)ix128 (Abstract 374P) Gruenberger T, et al. Eur J Cancer Supp. 2007;5:255 (Abstract P#3064) Surgery with curative intent in patients receiving bevacizumab is feasible With appropriate management, bevacizumab can be used in combination with chemotherapy with minimal risk of bleeding/wound-healing complications in patients with mCRC undergoing resection of metastases Data suggest that bevacizumab can be administered until 5 weeks prior to liver resection without any wound healing/ bleeding complications Liver generation following resection does not appear to be affected in patients receiving bevacizumab in combination with chemotherapy EORTC GI Group Guidelines FOLFOX/ CAPOX + bevacizumab* mCRC FOLFIRI Irinotecan + cetuximab Irinotecan + cetuximab FOLFOX/ CAPOX FOLFOX/ CAPOX Irinotecan + cetuximab FOLFOX/ CAPOX FOLFIRI FOLFIRI + bevacizumab* Capecitabine (5-FU/LV) ± bevacizumab* *If no cardiovascular contraindications EORTC = European Organisation for Research and Treatment of Cancer Key bevacizumab trials in mCRC Study AVIRI1 NO169662 Treatment Bevacizumab + Bevacizumab + regimen FOLFIRI FOLFOX-4/ CAPOX Phase Line of therapy IV First line III First line Status Median PFS (ECCO 2007) Primary endpoint met (ASCO 2007) 1Sobrero BEAT3 BRiTE4 Bevacizumab + various chemotherapy IV First line IV First line Efficacy Efficacy update update (ASCO 2007) (ECCO 2007) A, et al. Eur J Cancer Suppl 2007;5:254 (Abstract P#3060) L, et al. J Clin Oncol 2007;25(Suppl. 18):170s (Abstract 4028) 3Berry S, Van Cutsem E, et al. Eur J Cancer Suppl 2007;5:241 (Abstract P#3020) 4Grothey A, et al. J Clin Oncol 2007;25(Suppl. 18):172s (Abstract 4036) 2Saltz Key capecitabine trials in mCRC Study Treatment regimen Phase Line of therapy Status NO169661 Bevacizumab + FOLFOX-4/ CAPOX NO169672 CAPOX vs FOLFOX ML169873 CAPOX vs FOLFOX6 COFFE4 OXCAP vs OXAFAFU III III III II/III First line Second line First line First line Non-inferiority of XELOX shown (ASCO 2007) Equivalent RR and PFS (ECCO 2007) Primary endpoint Primary met endpoint met (ASCO 2007) (ECCO 2007) 1 Saltz L, et al. J Clin Oncol 2007;25(Suppl. 18):170s (Abstract 4028) ML, et al.J Clin Oncol 2007;25(Suppl. 18):171s (Abstract 4031) 3Ducreux M, et al. J Clin Oncol 2007;25(Suppl. 18):170s (Abstract 4029) 4Comella P, et al. Eur J Cancer Suppl 5:248 (Abstract P#3044) 2Rothenberg Conclusions Bevacizumab combined with standard therapies is an effective first-line treatment strategy for mCRC Bevacizumab is generally well tolerated Efficacy and safety outcomes in clinical evaluation studies are similar to those reported in clinical trials Capecitabine is effectively replacing 5-FU in mCRC Data suggest that metastasectomy is feasible in patients with mCRC treated with bevacizumab plus chemotherapy