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We aimed to investigate the prognostic role of genetic variants of VEGF in advanced NSCLC patients treated with platinum-based chemotherapy. A total of 196 patients with advanced NSCLC treated with first-line platinum-based chemotherapy were enrolled. We evaluated the relationship between VEGF polymorphisms and efficacy outcomes and chemotherapy toxicity. We found that rs699947, rs833061 and rs1005230 were in full linkage disequilibrium. Patients with CC genotype of rs833061 had a significant longer PFS than TT genotype (CC vs TT, HR = 1.67, 95%CI = 1.01−2.76, P = 0.043). Patients harbouring CC genotype had longer PFS compared with CT genotype (P &lt; 0.001). Moreover, CC genotypes conferred a significantly increased PFS compared to CT and TT genotype in dominant model (CC vs CT + TT, HR = 1.95, 95%CI = 1.23−3.10, P = 0.005). Patients carrying TT genotype of rs833061 had improved both ORR (HR = 0.54, 95%CI = 0.30−0.98, P = 0.041) and DCR (HR = 0.37, 95%CI = 0.20−0.66, P = 0.001) than non-TT patients. Furthermore, no association was found between any rs833061 alleles and adverse events (P = 0.425), but patients carrying rs1570360 AA genotype were more likely to experience grade 3−4 toxicities (P = 0.004) (GG vs AA, HR = 3.16, 95%CI = 1.26−7.94, P = 0.015). In conclusion, the variant homozygote CC of rs833061 exhibited a better prognosis based on association analysis. The present study provides reference for the future study of platinum-based chemotherapy response and toxicity.

VEGF single nucleotide polymorphisms predict improved outcome in advanced non-small cell lung cancer patients treated with platinum-based chemotherapy