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Contribution of MEK Inhibition to BRAF/MEK Inhibitor Combination Treatment of BRAF-Mutant Melanoma: Part 2 of the Randomized, Open-Label, Phase III COLUMBUS Trial

PA. Ascierto, R. Dummer, HJ. Gogas, A. Arance, M. Mandala, G. Liszkay, C. Garbe, D. Schadendorf, I. Krajsova, R. Gutzmer, V. Chiarion-Sileni, C. Dutriaux, JWB. de Groot, N. Yamazaki, C. Loquai, C. Robert, KT. Flaherty

. 2023 ; 41 (29) : 4621-4631. [pub] 20230728

Jazyk angličtina Země Spojené státy americké

Typ dokumentu klinické zkoušky, fáze III, časopisecké články, randomizované kontrolované studie, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc24001071

PURPOSE: In COLUMBUS part 1, patients with advanced BRAFV600-mutant melanoma were randomly assigned 1:1:1 to encorafenib 450 mg once daily plus binimetinib 45 mg twice a day (COMBO450), vemurafenib 960 mg twice a day, or encorafenib 300 mg once daily (ENCO300). As previously reported, COMBO450 improved progression-free survival (PFS) versus vemurafenib (part 1 primary end point) and ENCO300 (part 1 key secondary end point; not statistically significant). Part 2, requested by the US Food and Drug Administration, evaluated the contribution of binimetinib by maintaining the same encorafenib dosage in the combination (encorafenib 300 mg once daily plus binimetinib 45 mg twice daily [COMBO300]) and ENCO300 arms. METHODS: In part 2, patients were randomly assigned 3:1 to COMBO300 or ENCO300. ENCO300 (parts 1 and 2) data were combined, per protocol, for PFS analysis (key secondary end point) by a blinded independent review committee (BIRC). Other analyses included overall response rate (ORR), overall survival, and safety. RESULTS: Two hundred fifty-eight patients received COMBO300, and 86 received ENCO300. Per protocol, ENCO300 arms (parts 1 and 2 combined) were also evaluated (n = 280). The median follow-up for ENCO300 was 40.8 months (part 1) and 57.1 months (part 2). The median PFS (95% CI) was 12.9 months (10.9 to 14.9) for COMBO300 versus 9.2 months (7.4 to 11.1) for ENCO300 (parts 1 and 2) and 7.4 months (5.6 to 9.2) for ENCO300 (part 2). The hazard ratio (95% CI) for COMBO300 was 0.74 (0.60 to 0.92; two-sided P = .003) versus ENCO300 (parts 1 and 2). The ORR by BIRC (95% CI) was 68% (62 to 74) and 51% (45 to 57) for COMBO300 and ENCO300 (parts 1 and 2), respectively. COMBO300 had greater relative dose intensity and fewer grade 3/4 adverse events than ENCO300. CONCLUSION: COMBO300 improved PFS, ORR, and tolerability compared with ENCO300, confirming the contribution of binimetinib to efficacy and safety.

Cancer Center Massachusetts General Hospital Boston MA

Department of Dermatologic Oncology National Cancer Center Hospital Tokyo Japan

Department of Dermatology and Venereology 1st Faculty of Medicine Charles University and General University Hospital Prague Prague Czech Republic

Department of Dermatology Klinikum Bremen Ost Gesundheitnord gGmbH Bremen Germany

Department of Dermatology National Institute of Oncology Budapest Hungary

Department of Dermatology Skin Cancer Center Minden Mühlenkreiskliniken Ruhr University Bochum Minden Germany

Department of Dermatology University Hospital Essen Essen Germany

Department of Dermatology University Hospital Tübingen Tübingen Germany

Department of Dermatology University Hospital Zürich Skin Cancer Center Zürich Switzerland

Department of Internal Medicine National and Kapodistrian University of Athens Laikon Hospital Athens Greece

Department of Medical Oncology Hospital Clinic of Barcelona Barcelona Spain

Department of Medicine Service of Dermatology Paris Saclay University Cedex France

Department of Oncologic Dermatology Bordeaux University Hospital Center Bordeaux Cédex France

German Cancer Consortium Partner Site Essen Essen Germany

Isala Oncology Center Isala Zwolle the Netherlands

Melanoma Cancer Unit Istituto Oncologico Veneto IRCCS Padua Italy

Melanoma Unit Cancer Immunotherapy and Innovative Therapies Istituto Nazionale Tumori IRCCS Fondazione Pascale Naples Italy

Santa Maria Misericordia Hospital University of Perugia Perugia Italy

Citace poskytuje Crossref.org

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