The LTBI and non-LTBI groups were compared for age, body mass index (BMI), duration of infertility, causes of infertility (unknown reasons, fallopian tube factors, other female factors), COH regimen (GnRH-a long regimen, GnRH-a ultra-long regimen, GnRH antagonist regimen), basal hormone levels (follicle-stimulating hormone, luteinization hormone, E2, testosterone), anti-Müllerian hormone (AMH), number of total sinus follicles, endometrium thickness on hCG day, and number of good-quality embryos on the third day, and there was no significant difference (P > 0.05, Table 1). This evidence concerns the gene GNRH1 and Infertility.