Prenatal diagnosis of developmental and epileptic encephalopathy 9 with a 10.05-Mb microdeletion at Xq21.31q22.1 inherited from mother: A case report and literature review.

Abstract excerpt

BACKGROUND: Developmental and epileptic encephalopathy 9 (DEE9) is characterized by early infantile seizures and mild-to-severe neuropsychiatric symptoms. Despite being an X-linked dominant disorder, DEE9 mainly affects heterozygous females or mosaic males, while hemizygous males are less affected. PCDH19 gene has been documented as the causative gene. METHODS: Karyotyping analysis and copy number variation...

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