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  • Title: A novel homozygous splice-site variant of NCAPD2 gene identified in two siblings with primary microcephaly: The second case report.
    Author: Lin Y, Zeng C, Lu Z, Lin R, Liu L.
    Journal: Clin Genet; 2019 Jul; 96(1):98-101. PubMed ID: 31056748.
    Abstract:
    Here we describe the second case of primary microcephaly caused by a novel homozygous splice-site variant at the NCAPD2 gene. The proband was born with microcephaly, and developed intellectual disability. Whole exome sequencing identified a canonical splice-site variant, c.3477+2T>C, at the NCAPD2 gene. Sanger sequencing showed that the proband and her sibling, a symptomatic fetus, carried a homozygous c.3477+2T>C variant, while the unaffected parents were heterozygous and her younger brother had wild-type alleles. To date, only one case of primary microcephaly with a homozygous splice-site pathogenic variant at the NCAPD2 gene has been reported. Our study of two siblings provides additional evidence that NCAPD2 is a causative gene of primary microcephaly. This finding adds new knowledge in the etiology of microcephaly and contributes to more accurate counseling of affected families.
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