The genotype of ribonucleotidereductase M1 -269C > A is associated with the response to platinum-based chemotherapy and as a prognostic biomarker in advanced nonsmall cell lung cancer

Journal of Cancer Research and Therapeutics
Xiao-Ling XuWei-Min Mao

Abstract

Genetic polymorphisms of ribonucleotidereductase M1 (RRM1) was a DNA repair gene, which may affect patients' response to platinum-based chemotherapy or gemcitabine-based chemotherapy. We retrospectively assessed whether single nucleotide polymorphisms (SNPs) of RRM1 can be used to predict overall survival (OS), progression free survival and response in nonsmall cell lung cancer (NSCLC) patients treated with platinum-based regimens as first-line chemotherapy. The genotypes of four tagSNPs (RRM1 -316C > A, RRM1 -269C > A, RRM1 -702G > A and RRM1 -585T > G) were determined by SNaPshot detection technology and sequencing approaches in 184 advanced NSCLC patients by using peripheral blood. The overall response rate for 178 patients was 40.2% and the disease control rate was 90.2%. In patients who had ever smoked, a significant correlation was observed between the genotype of RRM1 -269C > A and response (P = 0.046). There was a significant difference in response according to the genotype of RRM1 -702G > A (P = 0.043). Using Log-rank test, we found that patients with the allelotype (CC) of RRM1 -269C > A had a shorter OS (P = 0.006) than the allelotype (CA + AA). The genotype of RRM1 -269C > A was significantly associated with platinu...Continue Reading

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