BREAK-3 [22,64] METRIC [60] BRIM-3 [23,63] CA184-024 [24] EORTC 18032 [25]
Comparison Dabrafenib 150 mg bid vs DTIC 1000 mg/m2 q3w Trametinib 2 mg qdvs chemotherapy (DTIC 1000 mg/m2 q3w or paclitaxel) Vemurafenib 960 mg bid vs DTIC 1000 mg/m2 q3w DTIC 850 mg/m2 q3w+ipilimumab 10 mg/kg q3w for 4 cyclesvsDTIC 850 mg/m2 q3w Temozolomide 150 mg/m2 od on days 1 to 7 q2w vs DTIC 1000 mg/m2q3w
Design Multinational, multicenter, open-label, phase III RCT Multinational, multicenter, open-label, phase III RCT Multinational, multicenter, open-label, phase III RCT Multinational, multicenter, double-blind, phase III RCT Multinational, multicenter, open-label, phase III RCT
Number of patients 250 (dabrafenib: 187; DTIC: 63) 322 (trametinib: 214; chemotherapy: 108) 675 (vemurafenib: 337; DTIC: 338) 502 (ipilimumab+DTIC: 250; DTIC: 252) 859 (temozolomide: 429; DTIC: 430)
Inclusion criteria • Patients aged ≥ 18 years, histologically confirmed advanced (unresectable stage III) or metastatic (stage IV) measurable disease according to RECIST Version 1.1 • BRAF V600E mutation–positive melanoma • ECOG PS 0-1 • Patients with histologically confirmed cutaneous advanced or metastatic melanoma (stage IIIC or stage IV) • BRAF V600E/K mutation–positive tumor • Subjects may have received no prior treatment or up to one prior regimen of chemotherapy for advanced or metastatic melanoma with measurable disease according to RECIST Version 1.1 • ECOG PS 0-1 • Patients aged ≥ 18 years, with unresectable, stage IIIC or stage IV melanoma • Positive for the BRAF V600E mutation on real-time polymerase chain reaction assay • ECOG PS 0-1 • Life expectancy of ≥ 3 months • Adequate hematologic, hepatic, and renal function • Patients aged ≥ 18 years with previously untreated stage III (unresectable) or stage IV melanoma with measurable lesions • ECOG PS 0-1 • Life expectancy ≥ 16 weeks • Baseline serum lactate dehydrogenase level did not affect eligibility • Patients aged ≥ 18 years with histologically confirmed, surgically incurable, or unresectable AJCC stage IV melanoma • WHO or ECOG status 0–1 • Adequate hematologic, renal, and hepatic function • Previous adjuvant cytokine or vaccine therapy for resected stage I to III disease, palliative surgery for distant metastatic disease, previous vaccine therapy (other than cytokine) for stage IV disease, and prior cytokine or chemotherapy for local–regional disease by isolated limb perfusion therapy • Recovered from any effects of major surgery or previous adjuvant treatment • Patients with cutaneous and mucosal melanoma allowed
Data cuts available/used December 2011 (primary analysis) June 2012 (updated analyses) December 2012 (updated analyses for OS and AEs only) October 2011 (primary analysis) December 2010 (primary analysis) February 2012 (updated analyses for PFS and OS) Unknown Unknown
Primary study outcome(s) PFS PFS PFS and OS OS OS
Median age, years (range) Dabrafenib53.0 (22–93); DTIC 50.0 (21–82) Trametinib54.5 (23–85); Chemotherapy 54.0 (21–77) Vemurafenib56.0 (21–86); DTIC 52.0 (17–86) Ipilimumab+DTIC 57.5a; DTIC 56.4a -
Males, % 59.6 53.7 56.4 60.0 58.6
ECOG, %
0 67.2 63.7 68.0 70.9 69.4
1 31.2 36.3 32.0 29.1 30.6
Unknown 1.6        
BRAFV600E mutation, % 100 87.3 88.6 Unknown Unknown
Crossover allowed Yes Yes Yes No No
Outcome assessor Investigator and IRC Investigator and IRC Investigator and IRC IRCb Unknown
Frequency of response assessment Weeks 6 and 12 and then every 9 weeks Weeks 6, 12, 21, and 30 and then every 12 weeks Weeks 6 and 12 and then every 9 weeks Week 12; in patients with no disease progression, then at weeks 16, 20, and 24 and every 6 weeks through week 48 and then every 12 weeks Every 9 weeks
PFS, median and HR (95% CI) • 5.1 vs 2.7 months; 0.30 (0.18–0.51) (December 2011 data) • 6.9 vs 2.7 months; 0.37 (0.24–0.58) (June 2012 data) • 4.8 vs 1.5 months; 0.45 (0.33–0.63) (ITT) • 4.8 vs 1.4 months; 0.44 (0.31–0.64)c • 4.8 vs 1.4 months; 0.44 (0.28–0.69)d • 5.3 vs 1.6 months; 0.26 (0.20–0.33) (December 2010 data) • 6.9 vs 1.6 months; 0.38 (0.32–0.46) • 0.76 (0.63–0.93) • 2.3 vs 2.2 months; 0.92 (0.80–1.06)
OS,eHR (95% CI), % crossover • 0.61 (0.25–1.48) (Dec. 2011 data) (44%) • 0.75 (0.44–1.29) (June 2012 data) (56%) • 0.76 (0.48–1.21 (Dec. 2012 data) (57%) • 0.54 (0.32–0.92) (ITT) (47%) • 0.53 (0.30–0.94) (50%)c • 0.55 (0.26–1.13) (53%)d • 0.37 (0.26–0.55) (Dec. 2010 data) (0%) • 0.76 (0.63–0.93) (Feb. 2012 data) (34%) • 0.72 (0.59–0.87) • 1.00 (0.86–1.17)
Key AEs, % Dabrafenibvs DTIC: grade 2 or higher (hyperkeratosis 1% vs 0%, palmar-plantar erythrodysesthesia 8%vs 0%, SCC/keratoacanthomas 6%vs 0%, neutropenia <1%vs 15%, nausea 1%vs 14%, pyrexia 11%vs 0%, arthralgia 6%vs 0%, fatigue 6%vs 5%)   Trametinibvs chemotherapy: grade 2 or higher (rash 27% vs 3%, fatigue 9% vs 10%, diarrhea 6% vs 5%, dermatitis 10% vs 0%, nausea 3% vs 11%, hypertension 15% vs 6%, peripheral edema 5% vs 0%, alopecia 2% vs 8%, constipation 1% vs 6%) Vemurafenibvs DTIC: grade 2 or higher (arthralgia 21% vs 1%, rash 18% vs 0%, fatigue 13% vs 13%, cutaneous SCC 12% vs< 1%, keratoacanthomas 8% vs 0%, nausea 8% vs 13%, alopecia 8% vs 0%; pruritus 7% vs 0%, hyperkeratosis 6% vs 0%) Ipilimumab+DTICvs DTIC: all grades (elevation of alanine aminotransferase levels 33.2%vs 5.6%, elevation of aspartate aminotransferase levels 29.1%vs 5.6%, diarrhea 36.4%vs 24.7%, pruritus 29.6%vs 8.8%, rash 24.7%vs 6.8%) Temozolomidevs DTIC: grade 3/4 (lymphopenia 45% vs 9%, thrombocytopenia 11% vs 6%, neutropenia 10% vs 16%, leukopenia 9% vs 8%, fatigue 6% vs 5%)
AE: Adverse Event; AJCC : American Joint Committee on Cancer; bid: twice per day; DTIC : Dacarbazine; ECOG PS: Eastern Cooperative Oncology Group Performance Status; HR: Hazard Ratio; IRC: Independent Review Committee; ITT: Intention-to-treat; OS: Overall Survival; PFS: Progression-Free Survival; q3w: every three weeks; qd: every day; RCT: Randomized Controlled Trial; RECIST : Response Evaluation Criteria in Solid Tumors; SCC: Squamous Cell Carcinoma; WHO: World Health Organization aMean; bFor all efficacy outcomes except survival; cPrimary efficacy population (overall); dPrimary efficacy population (first-line subgroup); eReported HRs for OS not adjusted for crossover.
Table 2: Main characteristics and outcomes of included trials.