PMID- 15266606 OWN - NLM STAT- MEDLINE DCOM- 20050105 LR - 20200930 IS - 1552-4825 (Print) IS - 1552-4825 (Linking) VI - 129A IP - 1 DP - 2004 Aug 15 TI - Undetectable maternal serum uE3 and postnatal abnormal sterol and steroid metabolism in Antley-Bixler syndrome. PG - 1-7 AB - Antley-Bixler syndrome (ABS) is a rare condition characterized by radiohumeral synostosis, craniosynostosis, midface hypoplasia, bowing of the femora, multiple joint contractures, and urogenital defects. Several reports have implicated errors of steroid or sterol metabolism in the pathogenesis of ABS. Evidence for this has included association with maternal luteomas, fetal 21-hydroxylase deficiency, early pregnancy exposure to high-dose fluconazole, lanosterol 14-alpha-demethylase deficiency, and a unique urinary steroid profile consistent with apparent pregnene hydroxylation deficiency (APHD). We report two sibs with classic ABS. During both pregnancies, mid-trimester maternal serum screening demonstrated undetectable levels of uncongugated estriol (uE3). The brother had ambiguous genitalia and increased serum levels of progesterone and 17-alpha-hydroxyprogesterone. Postnatal tests performed on the sister demonstrated both the unique urinary steroid profile that defines APHD and evidence of impaired lanosterol 14-alpha-demethylase activity. Our results suggest that in at least some patients with ABS, the skeletal findings and altered steroidogenesis are not associated with genes specific to individual sterol or steroid pathways but rather are related to an element, such as NADPH cytochrome P450 reductase (CPR) or cytochrome b5 (CYb5), that is common to all of these pathways. FAU - Cragun, Deborah L AU - Cragun DL AD - Cincinnati Children's Hospital Medical Center, Division of Human Genetics, Cincinnati, Ohio 45229, USA. FAU - Trumpy, Sharon K AU - Trumpy SK FAU - Shackleton, Cedric H L AU - Shackleton CH FAU - Kelley, Richard I AU - Kelley RI FAU - Leslie, Nancy D AU - Leslie ND FAU - Mulrooney, Neil P AU - Mulrooney NP FAU - Hopkin, Robert J AU - Hopkin RJ LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Am J Med Genet A JT - American journal of medical genetics. Part A JID - 101235741 RN - 0 (Steroids) RN - 0 (Sterols) RN - 4G7DS2Q64Y (Progesterone) RN - 68-96-2 (17-alpha-Hydroxyprogesterone) RN - FB33469R8E (Estriol) SB - IM MH - 17-alpha-Hydroxyprogesterone/blood MH - Abnormalities, Multiple/genetics/metabolism/*pathology MH - Adult MH - Child, Preschool MH - Craniosynostoses/*pathology MH - Estriol/*blood MH - Face/abnormalities MH - Fatal Outcome MH - Female MH - Genitalia/abnormalities MH - Humans MH - Infant MH - Infant, Newborn MH - Karyotyping MH - Male MH - Pregnancy MH - Pregnancy Trimester, Third MH - Progesterone/blood MH - Siblings MH - Steroids/*metabolism MH - Sterols/*metabolism MH - Syndrome EDAT- 2004/07/22 05:00 MHDA- 2005/01/06 09:00 CRDT- 2004/07/22 05:00 PHST- 2004/07/22 05:00 [pubmed] PHST- 2005/01/06 09:00 [medline] PHST- 2004/07/22 05:00 [entrez] AID - 10.1002/ajmg.a.30170 [doi] PST - ppublish SO - Am J Med Genet A. 2004 Aug 15;129A(1):1-7. doi: 10.1002/ajmg.a.30170.