Journal
AMERICAN JOURNAL OF HUMAN GENETICS
Volume 82, Issue 2, Pages 489-494Publisher
CELL PRESS
DOI: 10.1016/j.ajhg.2007.09.020
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Amelogenesis imperfecta (AT) is a collection of diverse inherited disorders featuring dental-enamel defects in the absence of significant nondental symptoms. AT phenotypes vary and are categorized as hypoplastic, hypocalcified, and hypomaturation types. Phenotypic specificity to enamel has focused research on genes encoding enamel-matrix proteins. We studied two families with autosomal-dominant hypocalcified AT and have identified nonsense mutations (R325X and Q398X) in the FAM83H gene on chromosome 8q24.3. The mutations perfectly cosegregate with the disease phenotype and demonstrate that FAM83H is required for proper dental-enamel calcification.
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