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  • Title: Etiological identification of recurrent male fatality due to a novel NSDHL gene mutation using trio whole-exome sequencing: A rare case report and literature review.
    Author: Zhuang J, Luo Q, Xie M, Chen Y, Jiang Y, Zeng S, Wang Y, Xie Y, Chen C.
    Journal: Mol Genet Genomic Med; 2023 Mar; 11(3):e2121. PubMed ID: 36504312.
    Abstract:
    BACKGROUND: Congenital hemidysplasia with ichthyosiform nevus and limb defects (CHILD) syndrome is a rare X-linked dominant, lethal male disorder caused by mutations to the NSDHL (NAD(P)H steroid dehydrogenase-like protein) gene. It primarily exhibits strictly unilateral congenital hemidysplasia with ichthyosiform erythroderma and ipsilateral limb defects in female individuals. METHODS: A Chinese couple suffering from recurrent spontaneous abortion in male fetuses was enrolled in this study. Chromosomal microarray analysis and whole-exome sequencing were performed for genetic etiological diagnosis. RESULTS: A 33-year-old pregnant woman with recurrent spontaneous abortion was experiencing her third pregnancy with a male embryo. In this pregnancy, a miscarriage occurred at a gestational age of 10+6  weeks with no copy number variants. However, a novel mutation c.790-6C>T in the NSDHL gene was observed in the fetus through whole-exome sequencing (WES). Parental verification indicated that the NSDHL gene variant was inherited from the mother. Additionally, the variant in the NSDHL gene was absent in her subsequent pregnancy with a female fetus. CONCLUSION: In this study, we detected c.790-6C>T, a novel variant in the NSDHL gene that results in recurrent miscarriage in males. Our study may broaden the scope of research on the NSDHL gene in CHILD syndrome and strengthens the application value of WES for the genetic etiological identification of recurrent miscarriage.
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