Familial oligodontia and regional odontodysplasia associated with a PAX9 initiation codon mutation

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http://hdl.handle.net/10138/306925

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Koskinen , S , Keski-Filppula , R , Alapulli , H , Nieminen , P & Anttonen , V 2019 , ' Familial oligodontia and regional odontodysplasia associated with a PAX9 initiation codon mutation ' , Clinical Oral Implants Research , vol. 23 , no. 11 , pp. 4107-4111 . https://doi.org/10.1007/s00784-019-02849-5

Title: Familial oligodontia and regional odontodysplasia associated with a PAX9 initiation codon mutation
Author: Koskinen, Sari; Keski-Filppula, Riikka; Alapulli, Heikki; Nieminen, Pekka; Anttonen, Vuokko
Contributor: University of Helsinki, HUS Head and Neck Center
University of Helsinki, Clinicum
Date: 2019-11
Language: eng
Number of pages: 5
Belongs to series: Clinical Oral Implants Research
ISSN: 0905-7161
URI: http://hdl.handle.net/10138/306925
Abstract: Objective Tooth agenesis is one of the most common craniofacial developmental anomalies. In hypodontia, one to five teeth are missing, whereas oligodontia refers to the absence of at least six teeth, excluding the third molars. Mutations in several genes including MSX1, PAX9, AXIN2, and WNT10A have been shown to cause non-syndromic tooth agenesis. Regional odontodysplasia (RO), also known as "ghost teeth," is a rare developmental anomaly of tooth formation affecting both dentitions. Some possible causes of RO have been suggested, yet the etiology remains unknown. Because the phenotypes of both oligodontia and RO co-occur in one Finnish family, the aim here was to investigate the genetic etiology of the two conditions. Materials and methods A mutation screening of the genes MSX1, PAX9, AXIN2, and WNT10A was performed for the family members of a RO patient and family history of oligodontia. Results An initiation codon mutation of the PAX9 gene was found in the proband and segregating with oligodontia in the family. Conclusions The etiology of regional odontodysplasia (RO) may be genetic and the same genes can be involved both in RO and tooth agenesis.
Subject: 3126 Surgery, anesthesiology, intensive care, radiology
313 Dentistry
Regional odontodysplasia
RO
Oligodontia
Etiology
PAX9
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