[Genetic analysis of a child with atypical Williams-Beuren syndrome presenting as supravalvular aortic stenosis].
2020
OBJECTIVE: To explore the genetic basis for a child with supravalvular aortic stenosis. METHODS: The child and his parents were subjected to conventional G-banding karyotyping, array comparative genomic hybridization (aCGH) and multiplex ligation-dependent probe amplification (MLPA) analysis. RESULTS: No karyotypic abnormality was detected in the child and his parents. aCGH has identified a de novo 278 kb deletion encompassing the ELN gene in 7q11.23, which overlapped with the critical region of Williams-Beuren syndrome (WBS). MLPA has confirmed above findings. CONCLUSION: The proband was diagnosed with atypical WBS. Deletion of the ELN gene may predispose to supravalvular aortic stenosis in the proband.
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