Genetic analysis of non-syndromic familial multiple supernumerary premolars

Doo Hwan Bae, Ji Hyun Lee, Je Seon Song, Han Sung Jung, Hyung Jun Choi, Ji Hun Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Objective: Supernumerary teeth, a term describing a condition where patients have an abnormally large number of teeth, can be associated with non-syndromic or syndromic phenotypes. PDGFRs are cell surface tyrosine kinase receptors, and are involved in several aspects of tooth development. The purpose of this study was to identify causative genes of familial supernumerary teeth and the molecular pathogenesis of tooth number abnormalities through genetic analysis of a family that showed supernumerary premolars in two successive generations. Material and methods: We recruited a Korean family with supernumerary premolars and performed mutational analyses to identify the underlying molecular genetic aetiology. Results: Targeted exome sequencing identified a missense mutation in PDGFRB (c.C2053T, p.R685C). Sanger sequencing confirmed that three affected individuals in the patient’s family were heterozygous for the mutation. Conclusions: This is the first report of a Korean family that carries a PDGFRB mutation potentially responsible for supernumerary premolars. Our results demonstrate the power of next-generation sequencing in rapidly determining the genetic aetiology of numerical tooth abnormalities.

Original languageEnglish
Pages (from-to)350-354
Number of pages5
JournalActa odontologica Scandinavica
Issue number5
Publication statusPublished - 2017 Jul 4

Bibliographical note

Publisher Copyright:
© 2017 Acta Odontologica Scandinavica Society.

All Science Journal Classification (ASJC) codes

  • Dentistry(all)


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