Clinical and molecular characterization of five Spanish kindreds with X-linked adrenal hypoplasia congenita: atypical findings and a novel mutation in NR0B1

Abstract X-linked adrenal hypoplasia congenita (AHC) is caused by To characterize clinically and at the molecular level a cohort of Spanish patients with AHC. Nine boys (from five families) with AHC were screened for gene mutations were found in all analyzed patients, one of them being novel (p.Gln305*). One patient presented with preserved hypothalamic-pituitary-gonadal axis. Salt-wasting episodes, delayed puberty, and hypogonadotropic hypogonadism were common, although no association was observed between AHC phenotype and genetic mutations. None of the patients has had descendants. AHC phenotype cannot be predicted based on genetic results as there is no definite genotype-phenotype relationship, including intrafamilial variability. Nevertheless, genetic testing for