DNER and Infertility: For example, the pan-BET inhibitory activity of JQ1 has been shown to inhibit testicular BRDT to cause reversible testicular atrophy and infertility [57], and thrombocytopenia together neutropenia were the dose-limiting toxicities observed in phase I clinical trials with the oral BET-BRD inhibitor OTX015 [6, 7].