A novel de novo KDM5C variant in a female with global developmental delay and ataxia: a case report
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| Název: | A novel de novo KDM5C variant in a female with global developmental delay and ataxia: a case report |
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| Autoři: | Natalie C. Lippa, Subit Barua, Vimla Aggarwal, Elaine Pereira, Jennifer M. Bain |
| Zdroj: | BMC Neurol BMC Neurology, Vol 21, Iss 1, Pp 1-4 (2021) |
| Informace o vydavateli: | Springer Science and Business Media LLC, 2021. |
| Rok vydání: | 2021 |
| Témata: | Male, 0301 basic medicine, Developmental Disabilities, Intellectual disability, Case Report, Exomes, 03 medical and health sciences, Neurodevelopmental disorder, Intellectual disability--Etiology, Intellectual Disability, Case report, Exome Sequencing, Humans, RC346-429, Child, Histone Demethylases, 0303 health sciences, Muscle hypotonia in children, Nervous system--Diseases--Etiology, 3. Good health, Phenotype, Child, Preschool, KDM5C, Muscle Hypotonia, Ataxia, Female, Neurology. Diseases of the nervous system |
| Popis: | Background Pathogenic variants in KDM5C are a cause of X-linked intellectual disability in males. Other features in males include short stature, dysmorphic features, seizures and spasticity. In some instances, female relatives were noted to have learning difficulties and mild intellectual disabilities, but full phenotypic descriptions were often incomplete. Recently, detailed phenotypic features of five affected females with de novo variants were described. (Clin Genet 98:43–55, 2020) Four individuals had a protein truncating variant and 1 individual had a missense variant. All five individuals had developmental delay/intellectual disability and three neurological features. Case presentation Here we report a three-year-old female with global developmental delay, hypotonia and ataxia. Through whole exome sequencing, a de novo c.1516A > G (p.Met506Val) variant in KDM5C was identified. This missense variant is in the jumonji-C domain of this multi domain protein where other missense variants have been previously reported in KDM5C related disorder. The KDM5C gene is highly intolerant to functional variation which suggests its pathogenicity. The probands motor delays and language impairment is consistent with other reported female patients with de novo variants in KDM5C. However, other features reported in females (distinctive facial features, skeletal abnormalities, short stature and endocrine features) were absent. To the best of our knowledge, our proband is the first female patient reported with a diagnosis of ataxia. Conclusions This case report provides evidence for an emerging and phenotypic variability that adds to the literature of the role of KDM5C in females with neurodevelopmental disorders as well as movement disorders. |
| Druh dokumentu: | Article Other literature type |
| Jazyk: | English |
| ISSN: | 1471-2377 |
| DOI: | 10.1186/s12883-021-02380-9 |
| DOI: | 10.7916/wzds-zr05 |
| Přístupová URL adresa: | https://bmcneurol.biomedcentral.com/track/pdf/10.1186/s12883-021-02380-9 https://pubmed.ncbi.nlm.nih.gov/34530748 https://doaj.org/article/373a2e3506914968af5df3d35a2b1f86 https://pubmed.ncbi.nlm.nih.gov/34530748/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8447699 https://bmcneurol.biomedcentral.com/articles/10.1186/s12883-021-02380-9 https://link.springer.com/content/pdf/10.1186/s12883-021-02380-9.pdf |
| Rights: | CC BY |
| Přístupové číslo: | edsair.doi.dedup.....2b68ca071eeccd1ee4c975fa9c9124bc |
| Databáze: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | Background Pathogenic variants in KDM5C are a cause of X-linked intellectual disability in males. Other features in males include short stature, dysmorphic features, seizures and spasticity. In some instances, female relatives were noted to have learning difficulties and mild intellectual disabilities, but full phenotypic descriptions were often incomplete. Recently, detailed phenotypic features of five affected females with de novo variants were described. (Clin Genet 98:43–55, 2020) Four individuals had a protein truncating variant and 1 individual had a missense variant. All five individuals had developmental delay/intellectual disability and three neurological features. Case presentation Here we report a three-year-old female with global developmental delay, hypotonia and ataxia. Through whole exome sequencing, a de novo c.1516A > G (p.Met506Val) variant in KDM5C was identified. This missense variant is in the jumonji-C domain of this multi domain protein where other missense variants have been previously reported in KDM5C related disorder. The KDM5C gene is highly intolerant to functional variation which suggests its pathogenicity. The probands motor delays and language impairment is consistent with other reported female patients with de novo variants in KDM5C. However, other features reported in females (distinctive facial features, skeletal abnormalities, short stature and endocrine features) were absent. To the best of our knowledge, our proband is the first female patient reported with a diagnosis of ataxia. Conclusions This case report provides evidence for an emerging and phenotypic variability that adds to the literature of the role of KDM5C in females with neurodevelopmental disorders as well as movement disorders. |
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| ISSN: | 14712377 |
| DOI: | 10.1186/s12883-021-02380-9 |