EC NEUROLOGY Case Report Case Report: A Rare Homozygous Missense Mutation of ADAT3 Gene in Intellectual Disability in a Saudi Patient
نویسنده
چکیده
Intellectual disability (ID) is defined by significant limitations in intellectual functioning and adaptive behavior with an age of onset being less than 18 years. The prevalence of intellectual disability/developmental delay is 1 – 3 % in the general population. The definition of mental retardation/intellectual disability Shift from ‘Mental retardation’ to ‘Intellectual disability’ in the 2002) [1] suggested will “remain in effect for now and in the future,” defines intellectual disability as: characterized by significant limitations both in intellectual functioning and in adaptive behavior as expressed in conceptual, social, and practical adaptive skills. This disability originates before age 18. The ADAT3 gene encodes one of two eukaryotic proteins that are necessary for the deamination of adenosine at position 34 to inosine in t-RNA. The first human mutation in the t-RNA editing machinery and expand the landscape of pathways involved in the pathogenesis of ID.
منابع مشابه
Syndromic Intellectual Disability Caused by a Novel Truncating Variant in AHDC1: A Case Report
Mutations in the AHDC1 gene are associated with the Xia-Gibbs syndrome (XGS), a sporadic genetic disorder characterised by developmental delay, intellectual disability, hypotonia, obstructive sleep apnoea, dysmorphic facial features, and cerebral malformations with plagiocephaly. Here we report the case of a 13-year-old Colombian female patient with a history of developmental delay, speech dela...
متن کاملA Missense Mutation in the HMNT Gene Responsible for Autosomal Recessive Intellectual Disability in an Iranian Family with Consanguineous Marriage
Background and Aims: One of the neurotransmitters in the brain is Histamine which acts as several biological mechanism regulators like inflammation, gastric acid secretion, and neuromodulation. Inactivation of Histamine occurs by histamine N-methyltransferase (HNMT) enzyme. The HNMT transfers a methyl group from S-adenosyl-L-methionine to Histamine and is the main process for the termination of...
متن کاملMSX1 Mutation in Witkop Syndrome; A Case Report
The Witkop syndrome is a rare autosomal dominant disorder characterized by the absence of several teeth and abnormalities of the nails. This is the first report of a rare genetic tooth and nail syndrome diagnosed in a 2.5-year-old boy with early exfoliation of the primary canine, absence of the primary incisors, and nail dysplasia. A homozygous mutation was identified in 3’-UTR of MSX1 gene in ...
متن کاملA Novel Missense Mutation in CLCN1 Gene in a Family with Autosomal Recessive Congenital Myotonia
Congenital recessive myotonia is a rare genetic disorder caused by mutations in CLCN1, which codes for the main skeletal muscle chloride channel ClC-1. More than 120 mutations have been found in this gene. The main feature of this disorder is muscle membrane hyperexcitability. Here, we report a 59-year male patient suffering from congenital myotonia. He had transient generalized myotonia, which...
متن کاملMicroduplication of Xp22.31 and MECP2 Pathogenic Variant in a Girl with Rett Syndrome: A Case Report
Rett syndrome (RS) is a neurodevelopmental infantile disease characterized by an early normal psychomotor development followed by a regression in the acquisition of normal developmental stages. In the majority of cases, it leads to a sporadic mutation in the MECP2 gene, which is located on the X chromosome. However, this syndrome has also been associated with microdeletions, gene translocations...
متن کامل