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Mutations in a Novel Gene, NHS, Cause the Pleiotropic Effects of Nance-Horan Syndrome, Including Severe Congenital Cataract, Dental Anomalies, and Mental Retardation
journal contributionposted on 2023-05-16, 14:40 authored by Kathryn BurdonKathryn Burdon, McKay, JD, Sale, MM, Russell-Eggitt, IM, David MackeyDavid Mackey, Wirth, MG, Elder, JE, Nicoll, A, Clarke, MP, Liesel FitzgeraldLiesel Fitzgerald, Jim StankovichJim Stankovich, Shaw, MA, Sarma, S, Gajovic, S, Gruss, P, Ross, S, Thomas, P, Voss, AK, Thomas, T, Gecz, J, Jamie CraigJamie Craig
Nance-Horan syndrome (NHS) is an X-linked disorder characterized by congenital cataracts, dental anomalies, dysmorphic features, and, in some cases, mental retardation. NHS has been mapped to a 1.3-Mb interval on Xp22.13. We have confirmed the same localization in the original, extended Australian family with NHS and have identified protein-truncating mutations in a novel gene, which we have called "NHS," in five families. The NHS gene encompasses âˆ¼650 kb of genomic DNA, coding for a 1,630-amino acid putative nuclear protein. NHS orthologs were found in other vertebrates, but no sequence similarity to known genes was identified. The murine developmental expression profile of the NHS gene was studied using in situ hybridization and a mouse line containing a lacZ reporter-gene insertion in the Nhs locus. We found a complex pattern of temporally and spatially regulated expression, which, together with the pleiotropic features of NHS, suggests that this gene has key functions in the regulation of eye, tooth, brain, and craniofacial development.
Publication titleAmerican Journal of Human Genetics
Department/SchoolMenzies Institute for Medical Research
PublisherUniversity Chicago Press
Place of publicationChicago, USA