Malformations of cortical development
Region: ISCA-37430-Loss17p13.3 (Miller-Dieker syndrome) region (includes YWHAE and PAFAH1B1) Loss
The required percent of overlap for this region has been changed from 80% to 60% following NHS Genomic Medicine Service approval.Created: 16 Mar 2022, 1:36 p.m. | Last Modified: 16 Mar 2022, 1:36 p.m.
Panel Version: 2.137
Required Overlap Percentage for ISCA-37430-Loss was changed from 80 to 60.
Region: ISCA-37430-Loss was added Region: ISCA-37430-Loss was added to Malformations of cortical development. Sources: ClinGen,Expert Review Green Mode of inheritance for Region: ISCA-37430-Loss was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Phenotypes for Region: ISCA-37430-Loss were set to microcephaly, dysgenesis of the corpus callosum, and cerebellar atrophy, as well as neurobehavioral disorders, including delayed development, mental retardation, and attention deficit-hyperactivity disorder. Patients with duplications of YWHAE tended to have macrosomia, facial dysmorphism, and mild developmental delay; growth restriction, craniofacial dysmorphisms, structural abnormalities of brain and cognitive impairment; Chromosome 17p13.3 duplication syndrome; prominent forehead, bitemporal hollowing, short nose with upturned nares, protuberant upper lip, thin vermilion border, and small jaw; Characteristic facies, pre- and post-natal growth retardation; 247200; classic lissencephaly (pachygyria, incomplete or absent gyration of the cerebrum), microcephaly, wrinkled skin over the glabella and frontal suture, prominent occiput, narrow forehead, downward slanting palpebral fissures, small nose and chin, cardiac malformations, hypoplastic male extrenal genitalia, growth retardation, and mental deficiency with seizures and EEG abnormalities; Miller-Dieker lissencephaly syndrome