PMID- 10341858 OWN - NLM STAT- MEDLINE DCOM- 19990609 LR - 20190813 IS - 0300-0664 (Print) IS - 0300-0664 (Linking) VI - 50 IP - 1 DP - 1999 Jan TI - Novel DAX1 mutations in X-linked adrenal hypoplasia congenita and hypogonadotrophic hypogonadism. PG - 69-75 AB - OBJECTIVE: Mutations of the DAX1 gene (Dosage-sensitive sex reversal-Adrenal hypoplasia congenita critical region on the X chromosome gene 1), which encodes a novel orphan nuclear receptor, have been identified in patients with X-linked adrenal hypoplasia congenita (AHC) and hypogonadotrophic hypogonadism (HHG). We have investigated two kindreds with AHC and HHG for DAX1 mutations. METHODS: Two kindreds with five affected males, four carrier females and four unaffected males were investigated. The gonadotrophin deficiency in three of the boys was observed to be partial until mid-puberty. DAX1 mutations in the entire 1413 bp coding region were sought by DNA sequence analysis. RESULTS: Two DAX1 mutations, situated within exon 1, were detected. These consisted of an insertional mutation at codon 183 that led to a frameshift and a premature Stop at codon 184, and a missense mutation Leu278Pro that involved a highly conserved leucine residue within the proposed ligand binding domain. Co-segregation of these mutations with the disease in each family, and their absence from 107 alleles in 73 (39 males and 34 females) unrelated control individuals, was demonstrated by allele specific oligonucleotide hybridization (ASO) analysis for the insertional mutation, and by Ban I restriction endonuclease analysis for the missense mutation. CONCLUSIONS: Two novel DAX1 mutations have been detected in two families with adrenal hypoplasia and hypogonadotrophic hypogonadism. The finding of partial gonadotrophin deficiency in the affected males from these families is notable and an early recognition of such a possibility in a patient, which may be facilitated by DAX1 mutational analysis, may help to prevent the sequelae of delayed androgen replacement therapy. FAU - Bassett, J H AU - Bassett JH AD - MRC Clinical Sciences Centre, Imperial College School of Medicine, Hammersmith Hospital, London, UK. FAU - O'Halloran, D J AU - O'Halloran DJ FAU - Williams, G R AU - Williams GR FAU - Beardwell, C G AU - Beardwell CG FAU - Shalet, S M AU - Shalet SM FAU - Thakker, R V AU - Thakker RV LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Endocrinol (Oxf) JT - Clinical endocrinology JID - 0346653 RN - 0 (DAX-1 Orphan Nuclear Receptor) RN - 0 (DNA-Binding Proteins) RN - 0 (NR0B1 protein, human) RN - 0 (Receptors, Retinoic Acid) RN - 0 (Repressor Proteins) RN - 0 (Transcription Factors) RN - 33515-09-2 (Gonadotropin-Releasing Hormone) RN - 9002-67-9 (Luteinizing Hormone) RN - 9002-68-0 (Follicle Stimulating Hormone) SB - IM MH - Adolescent MH - Adrenal Insufficiency/blood/*congenital/*genetics MH - Child MH - Child, Preschool MH - DAX-1 Orphan Nuclear Receptor MH - DNA Mutational Analysis MH - DNA-Binding Proteins/*genetics MH - Female MH - Follicle Stimulating Hormone/blood MH - Frameshift Mutation MH - Gonadotropin-Releasing Hormone MH - Humans MH - Hypogonadism/blood/*congenital/*genetics MH - Infant MH - Infant, Newborn MH - Luteinizing Hormone/blood MH - Male MH - *Mutation MH - Mutation, Missense MH - Receptors, Retinoic Acid/*genetics MH - *Repressor Proteins MH - Sequence Analysis, DNA MH - Transcription Factors/*genetics MH - *X Chromosome EDAT- 1999/05/26 00:00 MHDA- 1999/05/26 00:01 CRDT- 1999/05/26 00:00 PHST- 1999/05/26 00:00 [pubmed] PHST- 1999/05/26 00:01 [medline] PHST- 1999/05/26 00:00 [entrez] AID - 10.1046/j.1365-2265.1999.00601.x [doi] PST - ppublish SO - Clin Endocrinol (Oxf). 1999 Jan;50(1):69-75. doi: 10.1046/j.1365-2265.1999.00601.x.