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BRCA1 expression associated with the prognostic value of platinum-based chemotherapy for stage II-IV non-small cell
1Department of Oncology, NanFang Hospital, 198153Southern Medical University, Guangzhou, China.
Purpose:
To explore the relationship between breast cancer susceptibility gene 1 (BRCA1) expression and the prognostic value of platinum-based chemotherapy for stage II-IV non-small cell lung cancer (NSCLC).
Methods:
PubMed, Web of Science, Embase, and Cochrane Library were searched from inception to August 2021, for retrieving literature related to BRCA1 expression and prognostic value of platinum-based chemotherapy in NSCLC patients. Stata 15.0 was employed for statistical analysis.
Results:
A total of 15 articles were included. Compared with the low BRCA1 expression, its high expression negatively affected the overall survival of NSCLC patients treated with platinum-based chemotherapy (hazard ratio (HR) = 1.53, 95% confidence interval (CI): 1.01-2.31, P < 0.05). No significant difference was identified in the effect of both low and high BRCA1 expression on event-free survival (HR = 1.73, 95% CI: 0.98-3.05, P > 0.05). Subgroup analysis showed that significant differences existed in overall survival and event-free survival in Caucasian population; that is, compared with low BRCA1 expression, its high expression negatively affected the overall survival (HR = 1.79, 95% CI: 1.15-2.79, P < 0.05) and event-free survival (HR = 2.39, 95% CI: 1.43-3.97, P < 0.05). Nevertheless, there were no significant differences in overall survival and event-free survival in China.
Conclusion:
BRCA1 expression is correlated with the prognostic value of platinum-based chemotherapy for stage II-IV NSCLC patients. In Caucasian population, compared with low BRCA1 expression, its high expression has a negative effect on the overall survival and event-free survival in stage II-IV NSCLC patients after platinum-based chemotherapy; however, this correlation was not found in China.
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