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Eur J Oral Sci ; 126(1): 24-32, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29114927

RESUMO

Non-syndromic tooth agenesis (NSTA) is the most common developmental anomaly in humans. Several studies have been conducted on dental agenesis and numerous genes have been identified. However, the pathogenic mechanisms responsible for NSTA are not clearly understood. We studied a group of 28 patients with sporadic NSTA and nine patients with a family history of tooth agenesis. We focused on four genes - paired box 9 (PAX9), Wnt family member 10A (WNT10A), msh homeobox 1 (MSX1), and axin 2 (AXIN2) - using direct Sanger sequencing of the exons and intron-exon boundaries. The most prevalent variants identified in PAX9 and AXIN2 genes were analyzed using the chi-square test. The sequencing results revealed a number of variants in the AXIN2 gene, including one novel missense mutation in one patient with agenesis of a single second premolar. We also identified one variant in the AXIN2 gene as being a putative risk factor for tooth agenesis. Only one missense mutation was identified in the WNT10A gene and this mutation was found in two patients. Interestingly, WNT10A is reported as the most prevalent gene mutated in the European population with NSTA.


Assuntos
Anodontia/genética , Proteína Axina/genética , Fator de Transcrição MSX1/genética , Mutação , Fator de Transcrição PAX9/genética , Proteínas Wnt/genética , Anodontia/diagnóstico por imagem , Feminino , Humanos , Masculino , Mutação de Sentido Incorreto , Fenótipo , Polimorfismo Genético , Radiografia Panorâmica
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