TP53 and cancer: Although, Chowdhury et al. (2015) and Mostaid et al. (2014) noted a significant association of TP53 Arg72Pro gene polymorphism with lung cancer susceptibility in the Bangladeshi population, the inconsistency result between our study with that of previous two studies may be related to the sample size, differences in histological type and clinical stages of lung cancer as well as the age of the study subjects (cancer patients) between their study populations (Chowdhury et al., 2015; Mostaid et al., 2014) and ours.