BCL2 and cancer: Polymorphisms in many additional genes such as androgen receptor gene (Kachakova et al., 2016; Huang et al., 2003), p53, p21 and p73 genes (Simonova et al., 2015; Mittal et al., 2011), and BCL-2 gene (Lin et al., 2016) could be associated with cancers.