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PMID
Authors E.Van Cutsem J.Taieb R.Yaeger T.Yoshino E.Maiello E.Elez J.Dekervel P.Ross A.Ruiz Casado J.Graham T.Kato J.Ruffinelli T.André E.Carriere Roussel I.Klauck M.Groc A.Grothey J.Vedovato J.Tabernero
Title ANCHOR CRC: Results from a single-arm, phase 2 study of encorafenib, binimetinib plus cetuximab in previously untreated BRAF V600E–mutant metastatic colorectal cancer
Journal Annals of Oncology
Vol 32
Issue Supplement 3
Date July 2021
URL https://www.sciencedirect.com/science/article/pii/S0923753421012035?via%3Dihub
Abstract Text Background. BRAFV600E mutations are identified in 8-15% of metastatic colorectal cancer (mCRC) patients and confer a poor prognosis. The ANCHOR CRC study was designed to investigate the triplet combination of encorafenib (ENCO) + binimetinib (BINI) + cetuximab (CETUX) in the first-line setting of this population. Preliminary results reported a high confirmed objective response rate (50%) in the first 41 patients (stage 1) with a median PFS of 5 months. Having reached the minimal number of confirmed responses, the interim analysis for futility allowed continued enrolment of patients in stage 2. Results of stage 1 and stage 2 combined are presented here. Methods. ANCHOR CRC is an open-label, single-arm, two-stage design, phase 2 study in patients with BRAFV600E-mutant mCRC who did not receive any prior systemic therapy for metastatic disease. Patients received ENCO 300 mg orally QD + BINI 45 mg orally BID and CETUX IV weekly (250mg/m 2 after a first dose of 400mg/m 2) for the first 28 weeks and then once every two weeks (500mg/m 2). In stage 2, 50 additional subjects were planned to be enrolled, for a total of 90 subjects with a centrally confirmed BRAFV600E mutation. The primary endpoint was confirmed Objective Response Rate (cORR) based on local review; other endpoints included disease control rate (DCR), progression-free survival (PFS), overall survival (OS) and safety. Results from analysis at the end of stage 2 are presented here. Results. Ninety-five BRAFV600E-mutant mCRC patients with a median age of 65 years old (13% ≥ 75 years old) were enrolled and received the triplet combination as first line metastatic treatment. At study entry, 55% of patients presented with ECOG PS 1, 76% had metastases to at least 2 organs, 48% had peritoneal metastasis, 55% had synchronous metastases and 19% had received prior adjuvant systemic treatment. Ninety-two patients were evaluable for efficacy. Investigator assessed cORR was 47.8% (95% confidence interval [CI],37.3-58.5) and DCR was 88%. Median PFS was 5.8 months (95% CI, 4.6-6.4). Median OS was 17.2 months (95% CI, 14.1-NE) with only 28.4% patients having a death event. Grade 3 or higher adverse events were seen in 69.5% of patients, most commonly in ≥ 5% of patients: anemia (10.5%), diarrhea (9.5%), nausea (8.4%), large intestinal obstruction (6.3%), and acute kidney injury (5.3%). No new safety signals were seen. Conclusions. The ANCHOR CRC study is the first prospective study using a BRAF inhibitor-based therapy in first-line BRAFV600E-mutant mCRC. Despite the high-risk features of the population enrolled in this study, almost half of the patients responded and most had disease control, with a median PFS of 5.8 months and a median OS of 17.2 months. The safety profile was acceptable and toxicities remained manageable. Clinical trial identification NCT03693170. Legal entity responsible for the study Pierre Fabre Medicament. Funding. The study was funded by Pierre Fabre Medicament.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF V600E colorectal cancer predicted - sensitive Binimetinib + Cetuximab + Encorafenib Phase II Actionable In a Phase II (ANCHOR CRC) trial, Braftovi (encorafenib), Mektovi (binimetinib), and Erbitux (cetuximab) combination treatment (n=95) demonstrated an acceptable safety profile and resulted in a confirmed response rate of 47.8%, a disease control rate of 88%, a median progression-free survival of 5.8 months, and a median overall survival of 17.2 months in patients with metastatic colorectal cancer harboring BRAF V600E (Ann Oncol Volume 32, Supplement 3, July 2021, Page S222; NCT03693170). detail...