Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study

Abstract Background Patients with BRAF 600E mutated mCRC are associated with specific clinicopathological features and poor prognosis. The relative efficacy of first-line FOLFOXIRI triplet chemotherapy or doublet chemotherapy combined with bevacizumab in patients with BRAF 600E mutated mCRC remains...

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Main Authors: Gui-Xia Wei, Yu-Wen Zhou, Chao Dong, Tao Zhang, Peng Cao, Lin Xie, Meng Qiu
Format: Article
Language:English
Published: BMC 2024-11-01
Series:BMC Cancer
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Online Access:https://doi.org/10.1186/s12885-024-13171-z
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author Gui-Xia Wei
Yu-Wen Zhou
Chao Dong
Tao Zhang
Peng Cao
Lin Xie
Meng Qiu
author_facet Gui-Xia Wei
Yu-Wen Zhou
Chao Dong
Tao Zhang
Peng Cao
Lin Xie
Meng Qiu
author_sort Gui-Xia Wei
collection DOAJ
description Abstract Background Patients with BRAF 600E mutated mCRC are associated with specific clinicopathological features and poor prognosis. The relative efficacy of first-line FOLFOXIRI triplet chemotherapy or doublet chemotherapy combined with bevacizumab in patients with BRAF 600E mutated mCRC remains controversial. Methods BRAF V600E-mutated mCRC patients from 3 institutions were included. The clinicopathological characteristics of the enrolled patients were analyzed. Overall survival (OS) of patients was divided into 4 fractions, including 0–25%, 25-50%, 50-75%,75-100% by quartile method. Patients with OS ranging from 0 to 25% were defined as the poor prognosis group, and patients with OS ranging from 75 to 100% were defined as the good prognosis group. A propensity score matching (PSM) analysis was performed to balance the baseline characteristics of patients treated with doublet chemotherapy and triplet chemotherapy combined with bevacizumab. Survival and tumor response of the two regimens were evaluated. Results A total of 125 patients with BRAF V600E-mutated mCRC were enrolled. The median OS of BRAF V600E-mutated mCRC was 14.9 months and the median PFS of first-line therapy was 6.1 months. According to the multivariate analysis and the difference in baseline characteristics between the poor prognosis group and the good prognosis group, poor differentiation and liver metastasis were negative independent prognostic factors for OS in patientsx with BRAF V600E-mutated mCRC. Patients treated with first-line triplets had a longer OS than those treated with doublets both before PSM (17.4 months vs. 13.4 months, p = 0.022) and after PSM (17.4 months vs. 10.4 months, p = 0.004). There was no significant benefit between triplet-drug group and doublet-drug group for PFS, ORR and DCR. Subgroup analysis showed that patients in the triplet-drug group had a better prognosis with the following favorable factors: age ≤ 60 years old, PS score of 0–1, liver metastases and multiple organ metastases. Conclusion The overall prognosis of BRAF V600E mutant mCRC patients is poor. Poor differentiation and liver metastases were negative independent prognostic factors for OS. First-line triplet-drug therapy was associated with better OS, especially in patients with good physical condition and high tumor burden.
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spelling doaj-art-eb74d2392ccd43848b4a98e5e94b24872024-11-17T12:32:50ZengBMCBMC Cancer1471-24072024-11-0124111010.1186/s12885-024-13171-zClinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching studyGui-Xia Wei0Yu-Wen Zhou1Chao Dong2Tao Zhang3Peng Cao4Lin Xie5Meng Qiu6Department of Colorectal Cancer Center, West China Hospital of Sichuan UniversityDepartment of Colorectal Cancer Center, West China Hospital of Sichuan UniversityDepartment of Oncology, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical UniversityDepartment of Oncology, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Colorectal Cancer Center, West China Hospital of Sichuan UniversityDepartment of Oncology, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical UniversityDepartment of Colorectal Cancer Center, West China Hospital of Sichuan UniversityAbstract Background Patients with BRAF 600E mutated mCRC are associated with specific clinicopathological features and poor prognosis. The relative efficacy of first-line FOLFOXIRI triplet chemotherapy or doublet chemotherapy combined with bevacizumab in patients with BRAF 600E mutated mCRC remains controversial. Methods BRAF V600E-mutated mCRC patients from 3 institutions were included. The clinicopathological characteristics of the enrolled patients were analyzed. Overall survival (OS) of patients was divided into 4 fractions, including 0–25%, 25-50%, 50-75%,75-100% by quartile method. Patients with OS ranging from 0 to 25% were defined as the poor prognosis group, and patients with OS ranging from 75 to 100% were defined as the good prognosis group. A propensity score matching (PSM) analysis was performed to balance the baseline characteristics of patients treated with doublet chemotherapy and triplet chemotherapy combined with bevacizumab. Survival and tumor response of the two regimens were evaluated. Results A total of 125 patients with BRAF V600E-mutated mCRC were enrolled. The median OS of BRAF V600E-mutated mCRC was 14.9 months and the median PFS of first-line therapy was 6.1 months. According to the multivariate analysis and the difference in baseline characteristics between the poor prognosis group and the good prognosis group, poor differentiation and liver metastasis were negative independent prognostic factors for OS in patientsx with BRAF V600E-mutated mCRC. Patients treated with first-line triplets had a longer OS than those treated with doublets both before PSM (17.4 months vs. 13.4 months, p = 0.022) and after PSM (17.4 months vs. 10.4 months, p = 0.004). There was no significant benefit between triplet-drug group and doublet-drug group for PFS, ORR and DCR. Subgroup analysis showed that patients in the triplet-drug group had a better prognosis with the following favorable factors: age ≤ 60 years old, PS score of 0–1, liver metastases and multiple organ metastases. Conclusion The overall prognosis of BRAF V600E mutant mCRC patients is poor. Poor differentiation and liver metastases were negative independent prognostic factors for OS. First-line triplet-drug therapy was associated with better OS, especially in patients with good physical condition and high tumor burden.https://doi.org/10.1186/s12885-024-13171-zAdvanced colorectal cancerBRAF V600E mutationPropensity-score matchingEfficacyPrognosis
spellingShingle Gui-Xia Wei
Yu-Wen Zhou
Chao Dong
Tao Zhang
Peng Cao
Lin Xie
Meng Qiu
Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
BMC Cancer
Advanced colorectal cancer
BRAF V600E mutation
Propensity-score matching
Efficacy
Prognosis
title Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
title_full Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
title_fullStr Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
title_full_unstemmed Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
title_short Clinicopathologic features and treatment efficacy of patients with BRAF V600E-mutated metastatic colorectal cancer: a multi-center real-world propensity score matching study
title_sort clinicopathologic features and treatment efficacy of patients with braf v600e mutated metastatic colorectal cancer a multi center real world propensity score matching study
topic Advanced colorectal cancer
BRAF V600E mutation
Propensity-score matching
Efficacy
Prognosis
url https://doi.org/10.1186/s12885-024-13171-z
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