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Clinical and genetic analysis of two children with Neurodevelopmental disorder with hypotonia, stereotypic hand movements, and impaired language due to de novo variants of MEF2C gene / 中华医学遗传学杂志
Article in Zh | WPRIM | ID: wpr-1009284
Responsible library: WPRO
ABSTRACT
OBJECTIVE@#To explore the clinical characteristics and genetic etiology for two children with Neurodevelopmental disorder with hypotonia, stereotypic hand movements, and impaired language (MEDHSIL).@*METHODS@#Two children who had visited the Ningbo Women and Children's Hospital on October 15, 2021 were selected as the study subjects. Whole exome sequencing (WES) was carried out for both patients. Candidate variants were verified by Sanger sequencing of their family members.@*RESULTS@#The two children were respectively found to harbor a heterozygous c.138delC (p.Ile47Serfs*42) variant and a c.833del (p.L278*) variant of the MEF2C gene. Based on the guidelines from the American College of Medical Genetics and Genomics (ACMG), both variants were predicted to be pathogenic (PVS1+PS2+PM2_Supporting).@*CONCLUSION@#The c.138delC and c.833del variants of the MEF2C gene probably underlay the pathogenesis of MEDHSIL in the two children. Above findings have enriched the mutational spectrum of the MEF2C gene and enabled genetic counseling for their families.
Subject(s)
Full text: 1 Index: WPRIM Main subject: Family / MEF2 Transcription Factors / Neurodevelopmental Disorders / Genetic Counseling / Language / Muscle Hypotonia Limits: Child / Humans Language: Zh Journal: Chinese Journal of Medical Genetics Year: 2023 Type: Article
Full text: 1 Index: WPRIM Main subject: Family / MEF2 Transcription Factors / Neurodevelopmental Disorders / Genetic Counseling / Language / Muscle Hypotonia Limits: Child / Humans Language: Zh Journal: Chinese Journal of Medical Genetics Year: 2023 Type: Article