TP53 and neoplasm: However, no association was reported between MDM2 SNP309 and tumor susceptibility in the stratified analysis by p53 mutational status (GG versus TT: OR = 1.17, 95% CI = 0.75–1.82 and TG versus TT: OR = 1.09, 95% CI = 0.89–1.34 for positive p53 mutational status; GG versus TT: OR = 0.95, 95% CI = 0.72–1.25 and TG versus TT: OR = 1.06, 95% CI = 0.85–1.30 for negative p53 mutational status) [21].