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  • Title: A novel variant of GLI3, p.Asp1514Thrfs*5, is identified in a Chinese family affected by polydactyly.
    Author: Wang Y, Hao X, Jia X, Ji W, Yuan S, Gnamey EJA, Huang M, Xu L, Zhang X, Bai J, Sun W, Fu S, Liu Y, Wu J.
    Journal: Mol Genet Genomic Med; 2022 Jul; 10(7):e1968. PubMed ID: 35546307.
    Abstract:
    BACKGROUND: Polydactyly is a common congenital malformation characterized by the presence of supernumerary fingers or toes. In this case study, we sought to identify the causative pathogenic factor in a family from a northern region of China affected by non-syndromic postaxial polydactyly (PAP). METHODS: After recruiting a three-generation family with PAP, whole-exome sequencing was performed to identify the causative variant. In silico analysis and Sanger sequencing were used to validate the variant. RESULTS: We identified a novel heterozygous frameshift variant (NM_000168.6:c.4540delG, p.Asp1514Thrfs*5) in the transcriptional activator (TA1) domain of the GLI3 gene. CONCLUSION: The novel frameshift variant identified in this study further confirms the relationship between non-syndromic PAP and GLI3 and extends the previously established mutational and phenotypic spectra of GLI3.
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