Encorafenib plus cetuximab treatment in BRAF V600E-mutated metastatic colorectal cancer patients pre-treated with an anti-EGFR: An AGEO-GONO case series.
Eur J Cancer
; 168: 34-40, 2022 06.
Article
en En
| MEDLINE
| ID: mdl-35436675
BACKGROUND: Encorafenib plus cetuximab is efficient in anti-EGFR-naïve patients with BRAFV600E mutated (BRAFm) metastatic colorectal cancer (mCRC). No data are available concerning the efficacy of BRAF inhibitors associated with anti-EGFRs (B + E) in patients previously treated with an anti-EGFR agent. METHODS: We retrospectively collected a series of patients with BRAFm mCRC treated with B + E after previous anti-EGFR treatment, in 14 centers. Progression-free survival (PFS) and overall survival (OS) were calculated from the start of treatment, and we reported objective response and disease control rates (ORR, DCR; RECIST V1.1). RESULTS: Twenty-five BRAFm mCRC patients were enrolled. Prior to B + E treatment, 4/10/11 patients were treated with 1/2/> 2 previous treatment lines. Ten patients received previous panitumumab, 14 cetuximab, 1 both. Immediate progression with previous anti-EGFR was reported for 7 patients. Anti-BRAF was encorafenib for 21 patients, dabrafenib for 4 patients, with cetuximab for 24 patients and panitumumab for 1 patient. ORR was 40% (10 patients) and DCR was 80% (20 patients). Median PFS and OS were 4.8 months (95% CI, 4.01-7.95) and 10.1 months (95% CI, 7.75-NR). DCR amongst patients with previous primary resistance to anti-EGFR (N = 7) was 100%. Two patients discontinued B + E due to drug-related adverse event. CONCLUSIONS: Though in a limited retrospective series of patients, these results show the efficacy of the combination of anti-BRAF and anti-EGFRs in BRAFm mCRC patients previously treated with an anti-EGFR. The use of this combination should thus not be ruled out in this population with limited therapeutic options.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sulfonamidas
/
Carbamatos
/
Neoplasias Colorrectales
/
Cetuximab
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Eur J Cancer
Año:
2022
Tipo del documento:
Article
Pais de publicación:
Reino Unido