We evaluated seven single-nucleotide polymorphisms of six genes CDA Lys27Gln (A/C); CDA C435T; ERCC1 C118T; XRCC3 Thr241Met (C/T); XPD Lys751Gln (A/C); P53 Arg72Pro (G/C), and RRM1 C524T in 192 chemotherapy-naive patients with advanced NSCLC treated with cisplatin/gemcitabine-based regimen by TaqMan probe-based assays with 7300 Real-Time PCR System, using genomic DNA extracted from blood samples.
The purpose of the study was to investigate whether polymorphisms of p53 codon 72 (Arg72Pro) and MDM2 SNP309 (309T>G) affect p53 expression and the clinical outcome of patients with advanced nonsmall cell lung cancer (NSCLC).
This study investigated whether the functional polymorphisms in P53 pathway genes, P53 Arg72Pro (rs1042522), P73 G4C14-to-A4T14 (rs2273953 and rs1801173), and MDM2 T309G (rs2279744), alone or in combination, affect survival in advanced non-small cell lung cancer (NSCLC) patients.
In summary, we found that the p53 p. Pro72Arg, MDM2 c.14 + 309T > G and MDM2 c.-461C > G polymorphisms are associated with toxicity risks following platinum-based chemotherapy treatment in advanced NSCLC patients.