Severity of oro-dental anomalies in Loeys-Dietz syndrome segregates by gene mutation.

Journal of Medical Genetics
Priyam JaniJanice S Lee

Abstract

Background Loeys-Dietz syndrome (LDS), an autosomal dominant rare connective tissue disorder, has multisystemic manifestations, characterised by vascular tortuosity, aneurysms and craniofacial manifestations. Based on the associated gene mutations along the transforming growth factor-beta (TGF-β) pathway, LDS is presently classified into six subtypes. Methods We present the oro-dental features of a cohort of 40 patients with LDS from five subtypes. Results The most common oro-dental manifestations were the presence of a high-arched and narrow palate, and enamel defects. Other common characteristics included bifid uvula, submucous cleft palate, malocclusion, dental crowding and delayed eruption of permanent teeth. Both deciduous and permanent teeth had enamel defects in some individuals. We established a grading system to measure the severity of enamel defects, and we determined that the severity of the enamel anomalies in LDS is subtype-dependent. In specific, patients with TGF-β receptor II mutations (LDS2) presented with the most severe enamel defects, followed by patients with TGF-β receptor I mutations (LDS1). LDS2 patients had higher frequency of oro-dental deformities in general. Across all five subtypes, as well as withi...Continue Reading

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Citations

Sep 1, 2020·American Journal of Medical Genetics. Part C, Seminars in Medical Genetics·Malena Daich VarelaRobert B Hufnagel

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Methods Mentioned

BETA
X-ray

Software Mentioned

GraphPad Prism
SPSS Statistics

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