HLA-G and Infertility: At the genotype level (Table 4), HLA-G*01:01:02/01:04:01 was associated with an increased infertility and the recorded treatments, with respective OR = 5.06 (95%CI 1.22–21.02, P = 0.03) and OR = 9.07 (95% CI 1.22–39.50, P = 0.03).