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  • Title: Novel DLX3 variant identified in a family with tricho-dento-osseous syndrome.
    Author: Liu H, Wang Y, Liu H, Yu M, Zheng J, Feng H, Liu Y, Han D.
    Journal: Arch Oral Biol; 2022 Sep; 141():105479. PubMed ID: 35714441.
    Abstract:
    OBJECTIVES: To identify DLX3 variants in a Chinese family with typical clinical manifestations of tricho-dento-osseous syndrome (TDO). DESIGN: Sanger sequencing was performed to detect DLX3 variants in the TDO family. Three-dimensional laser scanning microscopy, bioinformatic and conformational analyses were employed to explore the phenotypic characterization and the functional impact. RESULTS: We identified a novel heterozygous variant in the DLX3 gene (c.534G>C; p.Gln178His). Familial co-segregation verified an autosomal dominant inheritance pattern. Bioinformatic prediction demonstrated the deleterious effects of the variant, and DLX3 structure changes suggested the corresponding functional impairments. CONCLUSIONS: We identified a variant in the DLX3 gene in an integrated family of Han nationality for the first time. This study expands the variant spectrum of DLX3 and phenotype spectrum of TDO syndrome.
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