HLA-DQA1 and Infertility: Among all infertile women, the frequency of HLA-DQA1*5 allele carriers was 109/188 = 58.0%, with no statistically significant difference between women with miscarriages (41/78 = 52.6%) and those with IVF-ET failures (68/110 = 61.8%) (p=0.206).