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Intellectual disability, autosomal recessive 63(MRT63)

MedGen UID:
1648348
Concept ID:
C4748167
Mental or Behavioral Dysfunction
Synonyms: INTELLECTUAL DEVELOPMENTAL DISORDER, AUTOSOMAL RECESSIVE 63; MENTAL RETARDATION, AUTOSOMAL RECESSIVE 63
 
Gene (location): CAMK2A (5q32)
 
Monarch Initiative: MONDO:0054861
OMIM®: 618095

Clinical features

From HPO
Spasticity
MedGen UID:
7753
Concept ID:
C0026838
Sign or Symptom
A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
Intellectual disability, severe
MedGen UID:
48638
Concept ID:
C0036857
Mental or Behavioral Dysfunction
Severe mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34.
Global developmental delay
MedGen UID:
107838
Concept ID:
C0557874
Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Inability to walk
MedGen UID:
107860
Concept ID:
C0560046
Finding
Incapability to ambulate.
Absent speech
MedGen UID:
340737
Concept ID:
C1854882
Finding
Complete lack of development of speech and language abilities.
Interictal epileptiform activity
MedGen UID:
869073
Concept ID:
C4023491
Finding
Epileptiform activity refers to distinctive EEG waves or complexes distinguished from background activity found in in a proportion of human subjects with epilepsy, but which can also be found in subjects without seizures. Interictal epileptiform activity refers to such activity that occurs in the absence of a clinical or subclinical seizure.
Myoclonic seizure
MedGen UID:
1385980
Concept ID:
C4317123
Sign or Symptom
A myoclonic seizure is a type of motor seizure characterized by sudden, brief (<100 ms) involuntary single or multiple contraction of muscles or muscle groups of variable topography (axial, proximal limb, distal). Myoclonus is less regularly repetitive and less sustained than is clonus.
Hypotonia
MedGen UID:
10133
Concept ID:
C0026827
Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.

Professional guidelines

PubMed

Ricciardello A, Tomaiuolo P, Persico AM
Am J Med Genet A 2021 Jul;185(7):2211-2233. Epub 2021 May 5 doi: 10.1002/ajmg.a.62222. PMID: 33949759Free PMC Article
Thomas LA, Lewis S, Massie J, Kirk EP, Archibald AD, Barlow-Stewart K, Boardman FK, Halliday J, McClaren B, Delatycki MB
Eur J Med Genet 2020 Dec;63(12):104075. Epub 2020 Sep 30 doi: 10.1016/j.ejmg.2020.104075. PMID: 33007447
Innes AM, McInnes BL, Dyment DA
Am J Med Genet C Semin Med Genet 2018 Dec;178(4):387-397. doi: 10.1002/ajmg.c.31661. PMID: 30580484

Recent clinical studies

Etiology

Sampagar A, Gosavi M, Kedar P, Patel T, Dongerdiye R, Mahantashetti N
Int J Hematol 2022 Feb;115(2):255-262. Epub 2021 Oct 27 doi: 10.1007/s12185-021-03240-5. PMID: 34704234
Kolkıran A, Karaosmanoğlu B, Taşkıran ZE, Şimşek-Kiper PÖ, Utine GE
Turk J Pediatr 2021;63(6):1091-1096. doi: 10.24953/turkjped.2021.06.019. PMID: 35023661
Ricciardello A, Tomaiuolo P, Persico AM
Am J Med Genet A 2021 Jul;185(7):2211-2233. Epub 2021 May 5 doi: 10.1002/ajmg.a.62222. PMID: 33949759Free PMC Article
Afroze B, Chaudhry B
J Pak Med Assoc 2013 Jan;63(1):106-10. PMID: 23865144
Mäenpää J
Arch Dis Child 1972 Dec;47(256):914-23. doi: 10.1136/adc.47.256.914. PMID: 4119068Free PMC Article

Diagnosis

Maroofian R, Kaiyrzhanov R, Cali E, Zamani M, Zaki MS, Ferla M, Tortora D, Sadeghian S, Saadi SM, Abdullah U, Karimiani EG, Efthymiou S, Yeşil G, Alavi S, Al Shamsi AM, Tajsharghi H, Abdel-Hamid MS, Saadi NW, Al Mutairi F, Alabdi L, Beetz C, Ali Z, Toosi MB, Rudnik-Schöneborn S, Babaei M, Isohanni P, Muhammad J, Khan S, Al Shalan M, Hickey SE, Marom D, Elhanan E, Kurian MA, Marafi D, Saberi A, Hamid M, Spaull R, Meng L, Lalani S, Maqbool S, Rahman F, Seeger J, Palculict TB, Lau T, Murphy D, Mencacci NE, Steindl K, Begemann A, Rauch A, Akbas S, Aslanger AD, Salpietro V, Yousaf H, Ben-Shachar S, Ejeskär K, Al Aqeel AI, High FA, Armstrong-Javors AE, Zahraei SM, Seifi T, Zeighami J, Shariati G, Sedaghat A, Asl SN, Shahrooei M, Zifarelli G, Burglen L, Ravelli C, Zschocke J, Schatz UA, Ghavideldarestani M, Kamel WA, Van Esch H, Hackenberg A, Taylor JC, Al-Gazali L, Bauer P, Gleeson JJ, Alkuraya FS, Lupski JR, Galehdari H, Azizimalamiri R, Chung WK, Baig SM, Houlden H, Severino M
Brain 2023 Dec 1;146(12):5031-5043. doi: 10.1093/brain/awad257. PMID: 37517035Free PMC Article
Sampagar A, Gosavi M, Kedar P, Patel T, Dongerdiye R, Mahantashetti N
Int J Hematol 2022 Feb;115(2):255-262. Epub 2021 Oct 27 doi: 10.1007/s12185-021-03240-5. PMID: 34704234
Celmina M, Micule I, Inashkina I, Audere M, Kuske S, Pereca J, Stavusis J, Pelnena D, Strautmanis J
Clin Genet 2019 Jan;95(1):63-78. Epub 2018 Jul 8 doi: 10.1111/cge.13374. PMID: 29722015
Innes AM, McInnes BL, Dyment DA
Am J Med Genet C Semin Med Genet 2018 Dec;178(4):387-397. doi: 10.1002/ajmg.c.31661. PMID: 30580484
Iwama K, Takaori T, Fukushima A, Tohyama J, Ishiyama A, Ohba C, Mitsuhashi S, Miyatake S, Takata A, Miyake N, Ito S, Saitsu H, Mizuguchi T, Matsumoto N
J Hum Genet 2018 Mar;63(3):263-270. Epub 2018 Jan 16 doi: 10.1038/s10038-017-0405-8. PMID: 29339779

Therapy

Morrone A, Malvagia S, Donati MA, Funghini S, Ciani F, Pela I, Boneh A, Peters H, Pasquini E, Zammarchi E
Am J Med Genet 2002 Jul 22;111(1):10-8. doi: 10.1002/ajmg.10532. PMID: 12124727

Prognosis

Yassin SH, Kalaw FGP, Li A, Fletcher E, Borooah S
Ophthalmic Genet 2024 Feb;45(1):63-71. Epub 2023 May 9 doi: 10.1080/13816810.2023.2204359. PMID: 37160720
Bayat A, de Valles-Ibáñez G, Pendziwiat M, Knaus A, Alt K, Biamino E, Bley A, Calvert S, Carney P, Caro-Llopis A, Ceulemans B, Cousin J, Davis S, des Portes V, Edery P, England E, Ferreira C, Freeman J, Gener B, Gorce M, Heron D, Hildebrand MS, Jezela-Stanek A, Jouk PS, Keren B, Kloth K, Kluger G, Kuhn M, Lemke JR, Li H, Martinez F, Maxton C, Mefford HC, Merla G, Mierzewska H, Muir A, Monfort S, Nicolai J, Norman J, O'Grady G, Oleksy B, Orellana C, Orec LE, Peinhardt C, Pronicka E, Rosello M, Santos-Simarro F, Schwaibold EMC, Stegmann APA, Stumpel CT, Szczepanik E, Terczyńska I, Thevenon J, Tzschach A, Van Bogaert P, Vittorini R, Walsh S, Weckhuysen S, Weissman B, Wolfe L, Reymond A, De Nittis P, Poduri A, Olson H, Striano P, Lesca G, Scheffer IE, Møller RS, Sadleir LG
Epilepsia 2022 Apr;63(4):974-991. Epub 2022 Feb 18 doi: 10.1111/epi.17173. PMID: 35179230
Ricciardello A, Tomaiuolo P, Persico AM
Am J Med Genet A 2021 Jul;185(7):2211-2233. Epub 2021 May 5 doi: 10.1002/ajmg.a.62222. PMID: 33949759Free PMC Article
Celmina M, Micule I, Inashkina I, Audere M, Kuske S, Pereca J, Stavusis J, Pelnena D, Strautmanis J
Clin Genet 2019 Jan;95(1):63-78. Epub 2018 Jul 8 doi: 10.1111/cge.13374. PMID: 29722015
Mäenpää J
Arch Dis Child 1972 Dec;47(256):914-23. doi: 10.1136/adc.47.256.914. PMID: 4119068Free PMC Article

Clinical prediction guides

Köse E, Kasapkara ÇS, İnci A, Yıldız Y, Sürücü Kara İ, Kahraman AB, Tümer L, Dursun A, Eminoğlu FT
Eur J Med Genet 2024 Apr;68:104927. Epub 2024 Feb 19 doi: 10.1016/j.ejmg.2024.104927. PMID: 38382588
Maroofian R, Kaiyrzhanov R, Cali E, Zamani M, Zaki MS, Ferla M, Tortora D, Sadeghian S, Saadi SM, Abdullah U, Karimiani EG, Efthymiou S, Yeşil G, Alavi S, Al Shamsi AM, Tajsharghi H, Abdel-Hamid MS, Saadi NW, Al Mutairi F, Alabdi L, Beetz C, Ali Z, Toosi MB, Rudnik-Schöneborn S, Babaei M, Isohanni P, Muhammad J, Khan S, Al Shalan M, Hickey SE, Marom D, Elhanan E, Kurian MA, Marafi D, Saberi A, Hamid M, Spaull R, Meng L, Lalani S, Maqbool S, Rahman F, Seeger J, Palculict TB, Lau T, Murphy D, Mencacci NE, Steindl K, Begemann A, Rauch A, Akbas S, Aslanger AD, Salpietro V, Yousaf H, Ben-Shachar S, Ejeskär K, Al Aqeel AI, High FA, Armstrong-Javors AE, Zahraei SM, Seifi T, Zeighami J, Shariati G, Sedaghat A, Asl SN, Shahrooei M, Zifarelli G, Burglen L, Ravelli C, Zschocke J, Schatz UA, Ghavideldarestani M, Kamel WA, Van Esch H, Hackenberg A, Taylor JC, Al-Gazali L, Bauer P, Gleeson JJ, Alkuraya FS, Lupski JR, Galehdari H, Azizimalamiri R, Chung WK, Baig SM, Houlden H, Severino M
Brain 2023 Dec 1;146(12):5031-5043. doi: 10.1093/brain/awad257. PMID: 37517035Free PMC Article
Sczakiel HL, Zhao M, Wollert-Wulf B, Danyel M, Ehmke N, Stoltenburg C, Damseh N, Al-Ashhab M, Balci TB, Osmond M, Andrade A, Schallner J, Porrmann J, McDonald K, Liao M, Oppermann H, Platzer K, Dierksen N, Mojarrad M, Eslahi A, Bakaeean B, Calame DG, Lupski JR, Firoozfar Z, Seyedhassani SM, Mohammadi SA, Anwaar N, Rahman F, Seelow D, Janz M, Horn D, Maroofian R, Boschann F
Eur J Hum Genet 2023 Aug;31(8):905-917. Epub 2023 May 15 doi: 10.1038/s41431-023-01382-0. PMID: 37188825Free PMC Article
Bayat A, de Valles-Ibáñez G, Pendziwiat M, Knaus A, Alt K, Biamino E, Bley A, Calvert S, Carney P, Caro-Llopis A, Ceulemans B, Cousin J, Davis S, des Portes V, Edery P, England E, Ferreira C, Freeman J, Gener B, Gorce M, Heron D, Hildebrand MS, Jezela-Stanek A, Jouk PS, Keren B, Kloth K, Kluger G, Kuhn M, Lemke JR, Li H, Martinez F, Maxton C, Mefford HC, Merla G, Mierzewska H, Muir A, Monfort S, Nicolai J, Norman J, O'Grady G, Oleksy B, Orellana C, Orec LE, Peinhardt C, Pronicka E, Rosello M, Santos-Simarro F, Schwaibold EMC, Stegmann APA, Stumpel CT, Szczepanik E, Terczyńska I, Thevenon J, Tzschach A, Van Bogaert P, Vittorini R, Walsh S, Weckhuysen S, Weissman B, Wolfe L, Reymond A, De Nittis P, Poduri A, Olson H, Striano P, Lesca G, Scheffer IE, Møller RS, Sadleir LG
Epilepsia 2022 Apr;63(4):974-991. Epub 2022 Feb 18 doi: 10.1111/epi.17173. PMID: 35179230
Ricciardello A, Tomaiuolo P, Persico AM
Am J Med Genet A 2021 Jul;185(7):2211-2233. Epub 2021 May 5 doi: 10.1002/ajmg.a.62222. PMID: 33949759Free PMC Article

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