BRD2 and Infertility: Another study with a sample size of 1395 identified significant associations between sperm recovery and only five parameters out of several including age, infertility duration, FSH level, occupation, residence, lifestyle habits, right testis volume, left testis volume, Sertoli cell only, tubular sclerosis, primary spermatocyte arrest, secondary spermatocyte arrest, spermatid arrest, hypospermatogenesis, hormonal therapy, and type of hormonal therapy (Amer et al., 2019).