The multiple logistic regression model included maternal age (continuous variable), paternal age (continuous variable), maternal BMI (continuous variable), paternal BMI (continuous variable), duration of infertility (continuous variable), maternal basal serum FSH level (continuous variable), basal AFC (continuous variable), endometrial thickness on the hCG trigger day (continuous variable), number of embryos transferred (1/2), embryo stage at transfer (cleavage/blastocyst) and the method of sperm acquisition (surgically acquired sperm/ejaculated sperm). The gene discussed is BRD2; the disease is Infertility.