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  • Title: Clinical and molecular characterization of 12 prenatal cases of Cri-du-chat syndrome.
    Author: Peng Y, Pang J, Hu J, Jia Z, Xi H, Ma N, Yang S, Liu J, Huang X, Tang C, Wang H.
    Journal: Mol Genet Genomic Med; 2020 Aug; 8(8):e1312. PubMed ID: 32500674.
    Abstract:
    BACKGROUND: This study aimed to define the molecular basis for 12 prenatal cases of Cri-du-chat syndrome (CdCS) and the potential genotyping-phenotyping association. METHODS: Karyotyping and single nucleotide polymorphism array analyses for copy number variants were performed. RESULTS: Nine cases had 5p terminal deletions and three had 5p interstitial deletions, and these cases had variable deletion sizes with partial overlapping. Phenotypically, besides intrauterine growth restriction (IUGR) and brain as well as heart abnormalities, hypospadias, and lung dysplasia were observed. Potential genetic causes for specific phenotypes in these cases were identified. CONCLUSION: This study defined the molecular bases for the patients of CdCS, which is important for genetic counseling for these families. The findings of present study expand the clinical features of CdCS in the fetal period, and provided important information for further refining the genotypic-phenotypic correlations for this syndrome.
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