Pfizer BRAFTOVI Plus FOLFIRI and Cetuximab Boosts Response Rates in BRAF V600E mCRC
Pfizer reported that in Cohort 3 of the pivotal BREAKWATER trial, the BRAFTOVI (encorafenib) plus cetuximab and FOLFIRI regimen achieved higher objective response rates in previously untreated metastatic colorectal cancer patients with BRAF V600E mutations. This combination added FOLFIRI to the regimen, enhancing efficacy over BRAFTOVI plus cetuximab alone.
1. BREAKWATER Trial Cohort 3 Shows Enhanced Response with BRAFTOVI Regimen
Pfizer today reported that in Cohort 3 of the pivotal BREAKWATER study, previously untreated metastatic colorectal cancer patients harboring the BRAF V600E mutation achieved an overall response rate (ORR) of 57 percent when treated with the triplet regimen of BRAFTOVI® (encorafenib), cetuximab and FOLFIRI, compared to an ORR of 35 percent for the doublet without chemotherapy. The median duration of response for the triplet arm reached 9.8 months versus 5.4 months in the control group. Additionally, median progression-free survival improved from 4.1 months to 7.2 months, representing a 42 percent reduction in risk of disease progression or death. Adverse events were consistent with known profiles for each agent, with grade 3–4 neutropenia observed in 22 percent of triplet-treated patients and manageable through dose modifications. These robust data support regulatory submissions in the second half of 2026 and reinforce Pfizer’s position in targeted oncology, potentially driving durable revenue streams beyond its established immuno-oncology portfolio.