CASK-related intellectual disability
עודכן לאחרונה 17 ספטמבר 2024
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CASK-related intellectual disability is a disorder of brain development that has two main forms: microcephaly with pontine and cerebellar hypoplasia (MICPCH), and X-linked intellectual disability (XL-ID) with or without nystagmus. Within each of these forms, males typically have more severe signs and symptoms than do females; the more severe MICPCH mostly affects females, likely because only a small number of males survive to birth.
תיאור
CASK-related intellectual disability is a disorder of brain development that has two main forms: microcephaly with pontine and cerebellar hypoplasia (MICPCH), and X-linked intellectual disability (XL-ID) with or without nystagmus. Within each of these forms, males typically have more severe signs and symptoms than do females; the more severe MICPCH mostly affects females, likely because only a small number of males survive to birth.
People with MICPCH often have an unusually small head at birth, and the head does not grow at the same rate as the rest of the body, so it appears that the head is getting smaller as the body grows (progressive microcephaly). Individuals with this condition have underdevelopment (hypoplasia) of areas of the brain called the cerebellum and the pons. The cerebellum is the part of the brain that coordinates movement. The pons is located at the base of the brain in an area called the brainstem, where it transmits signals from the cerebellum to the rest of the brain.
Individuals with MICPCH have intellectual disability that is usually severe. They may have sleep disturbances and exhibit self-biting, hand flapping, or other abnormal repetitive behaviors. Seizures are also common in this form of the disorder.
People with MICPCH do not usually develop language skills, and most do not learn to walk. They have hearing loss caused by nerve problems in the inner ear (sensorineural hearing loss), and most also have abnormalities affecting the eyes. These abnormalities include underdevelopment of the nerves that carry information from the eyes to the brain (optic nerve hypoplasia), breakdown of the light-sensing tissue at the back of the eyes (retinopathy), and eyes that do not look in the same direction (strabismus). Characteristic facial features may include arched eyebrows; a short, broad nose; a lengthened area between the nose and mouth (philtrum); a protruding upper jaw (maxilla); a short chin; and large ears.
Individuals with MICPCH may have weak muscle tone (hypotonia) in the torso along with increased muscle tone (hypertonia) and stiffness (spasticity) in the limbs. Movement problems such as involuntary tensing of various muscles (dystonia) may also occur in this form of the disorder.
XL-ID with or without nystagmus (rapid, involuntary eye movements) is a milder form of CASK-related intellectual disability. The intellectual disability in this form of the disorder can range from mild to severe; some affected females have normal intelligence. About half of affected individuals have nystagmus. Seizures and rhythmic shaking (tremors) may also occur in this form.
Inheritance patterns
The source lists the following possible inheritance patterns: X-linked dominant. More than one pattern can apply in different cases.
Related genes
Other names
CASK-related disorders
X-linked intellectual deficit, Najm type
Related patient information and medicines
Patient information leaflet
תינוקות פגים
However about 1 in 10 of all prematur... One study of 241 children born before 26 weeks of gestation found: 1 in 5 had severe disability (לדוגמה, שיתוק מוחין + not walking, low cognitive scores, blindness, profound deafness). 1 in 4 had moderate disability (לדוגמה, שיתוק מוחין + walking, IQ/cognitive scores in the special needs.
Patient information leaflet
ספינה ביפידה
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שיתוק מוחין
Cerebral palsy is a problem with muscle function. It is caused by brain injury or abnormal development of the brain that occurs while a child's brain is still developing. Cerebral palsy is a name for a group of life-long conditions that have problems with muscle function and control. Mo... Some people with שיתוק מוחין also have other problems.
Patient information leaflet
מניעת נפילות בקרב קשישים
Although most falls do not cause injury, the results of a fall can be serious. A disorder of the brain ( Wernicke-Korsakoff syndrome ) can also cause falls. Problems with vision : for example, clouding of the lens of the eye ( cataract ) and visual fi... Problems with the brain and nervous system: this includes strokes, Parkinson's disease ,.
Patient information leaflet
תסמונת קרי דו שא
תסמונת קרי דו שא is a chromosome problem caused by a missing piece of chromosome 5. The syndrome is called cri du chat (French for cry of the cat) because affected babies often have a high-pitched cry. Not all babies with the missing piece of chromosome 5 wi... About 1 in 10 babies born with cri du chat syndrome are severely affected and die.
Patient information leaflet
חוסר ביוד
Foods which tend to have a higher amount of iodine include dairy products, seafood, meat, some breads and eggs. How common is iodine deficiency. Underactive thyroid gland due ל 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.
קריאה נוספת והפניות
- CASK-related intellectual disability; MedlinePlus, National Library of Medicine.
- Burglen L, Chantot-Bastaraud S, Garel C, Milh M, Touraine R, Zanni G, Petit F, Afenjar A, Goizet C, Barresi S, Coussement A, Ioos C, Lazaro L, Joriot S, Desguerre I, Lacombe D, des Portes V, Bertini E, Siffroi JP, de Villemeur TB, Rodriguez D. Spectrum of pontocerebellar hypoplasia in 13 girls and boys with CASK mutations: confirmation of a recognizable phenotype and first description of a male mosaic patient. Orphanet J Rare Dis. 2012 Mar 27;7:18. doi: 10.1186/1750-1172-7-18.
- Hackett A, Tarpey PS, Licata A, Cox J, Whibley A, Boyle J, Rogers C, Grigg J, Partington M, Stevenson RE, Tolmie J, Yates JR, Turner G, Wilson M, Futreal AP, Corbett M, Shaw M, Gecz J, Raymond FL, Stratton MR, Schwartz CE, Abidi FE. CASK mutations are frequent in males and cause X-linked nystagmus and variable XLMR phenotypes. Eur J Hum Genet. 2010 May;18(5):544-52. doi: 10.1038/ejhg.2009.220. Epub 2009 Dec 23.
- Hayashi S, Okamoto N, Chinen Y, Takanashi J, Makita Y, Hata A, Imoto I, Inazawa J. Novel intragenic duplications and mutations of CASK in patients with mental retardation and microcephaly with pontine and cerebellar hypoplasia (MICPCH). Hum Genet. 2012 Jan;131(1):99-110. doi: 10.1007/s00439-011-1047-0. Epub 2011 Jul 7.
- Hsueh YP. Calcium/calmodulin-dependent serine protein kinase and mental retardation. Ann Neurol. 2009 Oct;66(4):438-43. doi: 10.1002/ana.21755.
- Moog U, Kutsche K, Kortum F, Chilian B, Bierhals T, Apeshiotis N, Balg S, Chassaing N, Coubes C, Das S, Engels H, Van Esch H, Grasshoff U, Heise M, Isidor B, Jarvis J, Koehler U, Martin T, Oehl-Jaschkowitz B, Ortibus E, Pilz DT, Prabhakar P, Rappold G, Rau I, Rettenberger G, Schluter G, Scott RH, Shoukier M, Wohlleber E, Zirn B, Dobyns WB, Uyanik G. Phenotypic spectrum associated with CASK loss-of-function mutations. J Med Genet. 2011 Nov;48(11):741-51. doi: 10.1136/jmedgenet-2011-100218. Epub 2011 Sep 27.
- Moog U, Kutsche K. CASK Disorders. 2013 Nov 26 [updated 2020 May 21]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK169825/
- Najm J, Horn D, Wimplinger I, Golden JA, Chizhikov VV, Sudi J, Christian SL, Ullmann R, Kuechler A, Haas CA, Flubacher A, Charnas LR, Uyanik G, Frank U, Klopocki E, Dobyns WB, Kutsche K. Mutations of CASK cause an X-linked brain malformation phenotype with microcephaly and hypoplasia of the brainstem and cerebellum. Nat Genet. 2008 Sep;40(9):1065-7. doi: 10.1038/ng.194.
- Watkins RJ, Patil R, Goult BT, Thomas MG, Gottlob I, Shackleton S. A novel interaction between FRMD7 and CASK: evidence for a causal role in idiopathic infantile nystagmus. Hum Mol Genet. 2013 May 15;22(10):2105-18. doi: 10.1093/hmg/ddt060. Epub 2013 Feb 12.
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