A recent double-blind, noninferiority RCT compared 1500 IU u-hCG plus 450 IU r-FSH (experimental) to 5000 IU or 10,000 IU u-hCG in 105 infertile patients scheduled for GnRH-a/GnRH-ant IVF cycles [41]. This evidence concerns the gene GNRH1 and Infertility.