关键词: Connexin 43 GJA1 Oculodentodigital dysplasia Targeted gene panel sequencing

Mesh : Child Connexin 43 / genetics Craniofacial Abnormalities / diagnostic imaging genetics DNA Mutational Analysis Eye Abnormalities / diagnostic imaging genetics Foot Deformities, Congenital / diagnostic imaging genetics Gap Junctions / pathology Humans Male Mutation / genetics Syndactyly / diagnostic imaging genetics Tooth Abnormalities / diagnostic imaging genetics

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Abstract:
Oculodentodigital dysplasia (ODDD; MIM #164200), a rare genetic disorder characterized by abnormal craniofacial, dental, ocular, and digital features, is caused by mutations in the gap junction alpha-1 (GJA1) gene. We report a case of a 6-year-old male who presented with dysmorphic facial features (short palpebral fissure, thin nose with hypoplastic alae nasi, and flat face), bilateral syndactyly, abnormal dentition, and proportionate short stature with growth hormone deficiency. A novel de novo heterozygous missense mutation (c.221A>C, p.H74P) in GJA1 was identified by targeted gene panel sequencing. This is the first case report of a novel ODDD-causing mutation in GJA1 confirmed by genetic analysis in Korea.
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