SYNGAP1-related intellectual disability
Última actualización 1 Mar 2023
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SYNGAP1-related intellectual disability is a neurological disorder characterised by moderate to severe intellectual disability that is evident in early childhood. The earliest features are typically delayed development of speech and motor skills, such as sitting, standing, and walking. Many people with this condition have weak muscle tone (hypotonia), which contributes to the difficulty with motor skills. Some affected individuals lose skills they had already acquired (developmental regression). Other features of SYNGAP1-related intellectual disability include recurrent seizures (epilepsy), hyperactivity, and autism spectrum disorder, which is characterised by impaired communication and social interaction; almost everyone with SYNGAP1-related intellectual disability develops epilepsy, and about half have autism spectrum disorder.
Descripción
SYNGAP1-related intellectual disability is a neurological disorder characterised by moderate to severe intellectual disability that is evident in early childhood. The earliest features are typically delayed development of speech and motor skills, such as sitting, standing, and walking. Many people with this condition have weak muscle tone (hypotonia), which contributes to the difficulty with motor skills. Some affected individuals lose skills they had already acquired (developmental regression). Other features of SYNGAP1-related intellectual disability include recurrent seizures (epilepsy), hyperactivity, and autism spectrum disorder, which is characterised by impaired communication and social interaction; almost everyone with SYNGAP1-related intellectual disability develops epilepsy, and about half have autism spectrum disorder.
Patrones de herencia
The source lists the following possible inheritance patterns: Autosomal dominant. More than one pattern can apply in different cases.
Related genes
Otros nombres
Mental retardation, autosomal dominant 5
MRD5
Related patient information and medicines
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Bebés prematuros
...cerebral palsy, blindness or deafnessOne study of 241 children born before 26 weeks of gestation found: 1 in 5 had severe discapacidad (por ejemplo, parálisis cerebral + not walking, low cognitive scores, blindness, profound deafness). 1 in 4 had moderate disability (por ejemplo, parálisis cerebral + walking, IQ/cognitive scores in the special needs.
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Síndrome de Cri du Chat
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Dislexia
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Deficiencia de yodo
How common is iodine deficiency. Underactive thyroid gland due to iodine deficiency from birth (congenital hypothyroidism) is the most common preventable cause of severe learning disability in the world. There has been a worldwide use of salt with added iodine (iodized salt) since the 1990s. Because there are still some countries with widespread.
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Síndrome de Down
Síndrome de Down (also known as Down syndrome) is a genetic chromosome problem. Someone with Down's syndrome has an extra copy of chromosome 21 in the cells of their body. All people with Down's syndrome have some degree of learning disability. It cannot be cured but treatment... A number of advice and support groups are available for people with.
Lecturas adicionales y referencias
- SYNGAP1-related intellectual disability; MedlinePlus, National Library of Medicine.
- Aceti M, Creson TK, Vaissiere T, Rojas C, Huang WC, Wang YX, Petralia RS, Page DT, Miller CA, Rumbaugh G. Syngap1 haploinsufficiency damages a postnatal critical period of pyramidal cell structural maturation linked to cortical circuit assembly. Biol Psychiatry. 2015 May 1;77(9):805-15. doi: 10.1016/j.biopsych.2014.08.001. Epub 2014 Aug 13.
- Clement JP, Aceti M, Creson TK, Ozkan ED, Shi Y, Reish NJ, Almonte AG, Miller BH, Wiltgen BJ, Miller CA, Xu X, Rumbaugh G. Pathogenic SYNGAP1 mutations impair cognitive development by disrupting maturation of dendritic spine synapses. Cell. 2012 Nov 9;151(4):709-723. doi: 10.1016/j.cell.2012.08.045.
- Clement JP, Ozkan ED, Aceti M, Miller CA, Rumbaugh G. SYNGAP1 links the maturation rate of excitatory synapses to the duration of critical-period synaptic plasticity. J Neurosci. 2013 Jun 19;33(25):10447-52. doi: 10.1523/JNEUROSCI.0765-13.2013.
- Mignot C, von Stulpnagel C, Nava C, Ville D, Sanlaville D, Lesca G, Rastetter A, Gachet B, Marie Y, Korenke GC, Borggraefe I, Hoffmann-Zacharska D, Szczepanik E, Rudzka-Dybala M, Yis U, Caglayan H, Isapof A, Marey I, Panagiotakaki E, Korff C, Rossier E, Riess A, Beck-Woedl S, Rauch A, Zweier C, Hoyer J, Reis A, Mironov M, Bobylova M, Mukhin K, Hernandez-Hernandez L, Maher B, Sisodiya S, Kuhn M, Glaeser D, Weckhuysen S, Myers CT, Mefford HC, Hortnagel K, Biskup S; EuroEPINOMICS-RES MAE working group; Lemke JR, Heron D, Kluger G, Depienne C. Genetic and neurodevelopmental spectrum of SYNGAP1-associated intellectual disability and epilepsy. J Med Genet. 2016 Aug;53(8):511-22. doi: 10.1136/jmedgenet-2015-103451. Epub 2016 Mar 17.
- Ozkan ED, Creson TK, Kramar EA, Rojas C, Seese RR, Babyan AH, Shi Y, Lucero R, Xu X, Noebels JL, Miller CA, Lynch G, Rumbaugh G. Reduced cognition in Syngap1 mutants is caused by isolated damage within developing forebrain excitatory neurons. Neuron. 2014 Jun 18;82(6):1317-33. doi: 10.1016/j.neuron.2014.05.015.
- Parker MJ, Fryer AE, Shears DJ, Lachlan KL, McKee SA, Magee AC, Mohammed S, Vasudevan PC, Park SM, Benoit V, Lederer D, Maystadt I, Study D, FitzPatrick DR. De novo, heterozygous, loss-of-function mutations in SYNGAP1 cause a syndromic form of intellectual disability. Am J Med Genet A. 2015 Oct;167A(10):2231-7. doi: 10.1002/ajmg.a.37189. Epub 2015 Jun 15.
- Wang CC, Held RG, Hall BJ. SynGAP regulates protein synthesis and homeostatic synaptic plasticity in developing cortical networks. PLoS One. 2013 Dec 31;8(12):e83941. doi: 10.1371/journal.pone.0083941. eCollection 2013.
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