HLA-G and cancer: The results revealed that the HLA-G 14 bp Ins/Del polymorphism was significantly associated with cancer risk in the homozygote comparison (Ins/Ins vs. Del/Del: OR = 0.80, CI = 0.64–1.00; P=0.049, Figure 2 and Table 3) and allelic comparison (Ins vs. Del: OR = 0.89, CI = 0.81–0.99; P=0.035, Figure 3 and Table 3).