Among the 99 infertile men with AZF microdeletions referred to take part in the Royan Institute hormonal analysis, normal LH, FSH and testosterone levels were observed in 36 men (36.3%) while 22 men (22.2%) showed high FSH levels, 2 men (2%) had high LH levels, and 14 men (14.1%) had high levels of both LH and FSH. This evidence concerns the gene BRD2 and Infertility.