FAM83H mutations in families with autosomal-dominant hypocalcified amelogenesis imperfecta

Am J Hum Genet. 2008 Feb;82(2):489-94. doi: 10.1016/j.ajhg.2007.09.020.


Amelogenesis imperfecta (AI) is a collection of diverse inherited disorders featuring dental-enamel defects in the absence of significant nondental symptoms. AI 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 AI 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.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amelogenesis Imperfecta / genetics*
  • Amelogenesis Imperfecta / pathology
  • Base Sequence
  • Chromosomes, Human, Pair 8 / genetics*
  • Codon, Nonsense / genetics
  • DNA Primers / genetics
  • Humans
  • In Situ Hybridization
  • Lod Score
  • Molecular Sequence Data
  • Phenotype*
  • Proteins / genetics*
  • Reverse Transcriptase Polymerase Chain Reaction
  • Sequence Analysis, DNA


  • Codon, Nonsense
  • DNA Primers
  • FAM83H protein, human
  • Proteins