BRD2 and Infertility: Based on testicular volume measurement in our study, two groups of infertile participants were distinguished: men with a volume of at least one testis below the norm (<12 mL) and men with a normal volume of both testes.74 Our results showed that infertile men with a reduced volume of at least one testis had a significantly higher FSH level and a lower sperm count, sperm morphology, motility and vitality.