Xeroderma pigmentosum complementation group D polymorphism toward lung cancer susceptibility survival and response in patients treated with platinum chemotherapy

Aim: The study investigated role of xeroderma pigmentosum complementation group D (XPD) single nucleotide polymorphisms in modulating lung cancer risk and its association with overall survival and clinical outcomes. Methods: XPD polymorphisms were detected using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). Results: CC genotype of A751C polymorphism was associated with an increased lung cancer risk (p = 0.01). Classification and Regression Tree (CART) analysis depicted C156A as the major contributing factor. Patients having CC, treated with irinotecan-cisplatin/carboplatin regimen showed a better survival (median survival time = 25.2) whereas a poor survival was for XPDG312A. Similarly, patients treated with pemetrexed and carrying heterozygous genotype of G312A polymorphism had a poor survival (p = 0.01). Conclusion: A751C and G312A act as a predictive marker in lung cancer patients treated with platinum chemotherapy. These findings might facilitate therapeutic decisions for individualized therapy in lung cancer patient. [GRAPHICS] .