“…Overexpression of PD‐1 is well demonstrated in cancers, whereas low expression of this molecule may cause intolerance to self‐tissue in autoimmune diseases (Chodon, Koya, & Odunsi, ; Dai, Jia, Zhang, Fang, & Huang, ). The genetic risk factors have the strong association with increased risk of cancers such as BCC (Chahal et al, ; Soheilifar et al, ; Stacey et al, ). SNP, as the most common genetic variation, contributes to the molecular pathogenesis of complex diseases via different functional mechanisms including effect on RNA splicing, transcription factor binding, DNA methylation at promoters, miRNAs binding to its target mRNA and long noncoding RNAs (Salmaninejad et al, ).…”