BRD2 and craniopharyngioma: The only patient who received hCG monotherapy, who did not require additional rFSH later in his treatment course, exhibited arrested puberty (baseline TV right 6 ml, left 8 ml) after surgery for craniopharyngioma in early adolescence, without major compromise of the FSH–Sertoli cell axis (serum concentrations of FSH 3.9 IU/l and inhibin B 248 pg/ml prior to starting therapy).