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Autosomal recessive cerebellar ataxia-blindness-deafness syndrome(SCABD; SCAR3)

MedGen UID:
338611
•Concept ID:
C1849094
•
Disease or Syndrome
Synonyms: Spinocerebellar ataxia autosomal recessive 3; Spinocerebellar ataxia with blindness and deafness
SNOMED CT: SCAR3 - spinocerebellar ataxia autosomal recessive type 3 (1204415006); Autosomal recessive spinocerebellar ataxia type 3 (1204415006); Autosomal recessive spinocerebellar ataxia, blindness, hearing loss syndrome (1204415006); Autosomal recessive spinocerebellar ataxia, blindness, deafness syndrome (1204415006)
Modes of inheritance:
Autosomal recessive inheritance
MedGen UID:
141025
•Concept ID:
C0441748
•
Intellectual Product
Source: Orphanet
A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).
Autosomal recessive inheritance (Orphanet)
 
Monarch Initiative: MONDO:0010061
OMIM®: 271250
Orphanet: ORPHA95433

Definition

A rare autosomal recessive syndromic cerebellar ataxia with the association of early-onset cerebellar ataxia, hearing loss and blindness. Patients may also present demyelinating peripheral motor neuropathy. Cerebral MRI shows alterations of the cerebellar white matter without cerebellar atrophy. [from SNOMEDCT_US]

Clinical features

From HPO
Hearing impairment
MedGen UID:
235586
•Concept ID:
C1384666
•
Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
See: Feature record | Search on this feature
Cochlear degeneration
MedGen UID:
338612
•Concept ID:
C1849095
•
Finding
Deterioration or loss of the tissues of the cochlea.
See: Feature record | Search on this feature
Cerebellar ataxia
MedGen UID:
849
•Concept ID:
C0007758
•
Disease or Syndrome
Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).
See: Feature record | Search on this feature
Blindness
MedGen UID:
99138
•Concept ID:
C0456909
•
Disease or Syndrome
Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.
See: Feature record | Search on this feature
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Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVAutosomal recessive cerebellar ataxia-blindness-deafness syndrome
Follow this link to review classifications for Autosomal recessive cerebellar ataxia-blindness-deafness syndrome in Orphanet.

Professional guidelines

PubMed

Joubert syndrome: Molecular basis and treatment.
Spahiu L, Behluli E, Grajçevci-Uka V, Liehr T, Temaj G
J Mother Child 2022 Mar 1;26(1):118-123. Epub 2023 Feb 22 doi: 10.34763/jmotherandchild.20222601.d-22-00034. PMID: 36803942Free PMC Article
Ataxia-telangiectasia: epidemiology, pathogenesis, clinical phenotype, diagnosis, prognosis and management.
Amirifar P, Ranjouri MR, Lavin M, Abolhassani H, Yazdani R, Aghamohammadi A
Expert Rev Clin Immunol 2020 Sep;16(9):859-871. Epub 2020 Oct 15 doi: 10.1080/1744666X.2020.1810570. PMID: 32791865
Kallmann syndrome: phenotype and genotype of hypogonadotropic hypogonadism.
Stamou MI, Georgopoulos NA
Metabolism 2018 Sep;86:124-134. Epub 2017 Nov 3 doi: 10.1016/j.metabol.2017.10.012. PMID: 29108899Free PMC Article

Recent clinical studies

Etiology

Ataxia-telangiectasia: epidemiology, pathogenesis, clinical phenotype, diagnosis, prognosis and management.
Amirifar P, Ranjouri MR, Lavin M, Abolhassani H, Yazdani R, Aghamohammadi A
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Ashrafi MR, Amanat M, Garshasbi M, Kameli R, Nilipour Y, Heidari M, Rezaei Z, Tavasoli AR
Expert Rev Neurother 2020 Jan;20(1):65-84. Epub 2019 Dec 12 doi: 10.1080/14737175.2020.1699060. PMID: 31829048
Cerebellar ataxias: an update.
Manto M, Gandini J, Feil K, Strupp M
Curr Opin Neurol 2020 Feb;33(1):150-160. doi: 10.1097/WCO.0000000000000774. PMID: 31789706
Neuroacanthocytosis.
Walker RH, Jung HH, Danek A
Handb Clin Neurol 2011;100:141-51. doi: 10.1016/B978-0-444-52014-2.00007-0. PMID: 21496574
Cerebellar/spinocerebellar syndromes.
Mariotti C, Di Donato S
Neurol Sci 2001 Nov;22 Suppl 2:S88-92. doi: 10.1007/s100720100042. PMID: 11794486

Diagnosis

Joubert syndrome: Molecular basis and treatment.
Spahiu L, Behluli E, Grajçevci-Uka V, Liehr T, Temaj G
J Mother Child 2022 Mar 1;26(1):118-123. Epub 2023 Feb 22 doi: 10.34763/jmotherandchild.20222601.d-22-00034. PMID: 36803942Free PMC Article
Update on Cerebellar Ataxia with Neuropathy and Bilateral Vestibular Areflexia Syndrome (CANVAS).
Dupré M, Hermann R, Froment Tilikete C
Cerebellum 2021 Oct;20(5):687-700. Epub 2020 Oct 4 doi: 10.1007/s12311-020-01192-w. PMID: 33011895Free PMC Article
Ataxia-telangiectasia: epidemiology, pathogenesis, clinical phenotype, diagnosis, prognosis and management.
Amirifar P, Ranjouri MR, Lavin M, Abolhassani H, Yazdani R, Aghamohammadi A
Expert Rev Clin Immunol 2020 Sep;16(9):859-871. Epub 2020 Oct 15 doi: 10.1080/1744666X.2020.1810570. PMID: 32791865
Kallmann syndrome: phenotype and genotype of hypogonadotropic hypogonadism.
Stamou MI, Georgopoulos NA
Metabolism 2018 Sep;86:124-134. Epub 2017 Nov 3 doi: 10.1016/j.metabol.2017.10.012. PMID: 29108899Free PMC Article
Ataxia telangiectasia: a review.
Rothblum-Oviatt C, Wright J, Lefton-Greif MA, McGrath-Morrow SA, Crawford TO, Lederman HM
Orphanet J Rare Dis 2016 Nov 25;11(1):159. doi: 10.1186/s13023-016-0543-7. PMID: 27884168Free PMC Article

Therapy

Ataxia-telangiectasia clinical trial landscape and the obstacles to overcome.
Kuhn K, Lederman HM, McGrath-Morrow SA
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GLP-1R agonists demonstrate potential to treat Wolfram syndrome in human preclinical models.
Gorgogietas V, Rajaei B, Heeyoung C, Santacreu BJ, Marín-Cañas S, Salpea P, Sawatani T, Musuaya A, Arroyo MN, Moreno-Castro C, Benabdallah K, Demarez C, Toivonen S, Cosentino C, Pachera N, Lytrivi M, Cai Y, Carnel L, Brown C, Urano F, Marchetti P, Gilon P, Eizirik DL, Cnop M, Igoillo-Esteve M
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Patients with Lately Diagnosed Cerebrotendinous Xanthomatosis.
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Carbohydrate-deficient glycoprotein syndromes.
Gordon N
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Prognosis

Normal and pathogenic variation of RFC1 repeat expansions: implications for clinical diagnosis.
Dominik N, Magri S, Currò R, Abati E, Facchini S, Corbetta M, Macpherson H, Di Bella D, Sarto E, Stevanovski I, Chintalaphani SR, Akcimen F, Manini A, Vegezzi E, Quartesan I, Montgomery KA, Pirota V, Crespan E, Perini C, Grupelli GP, Tomaselli PJ, Marques W; Genomics England Research Consortium, Shaw J, Polke J, Salsano E, Fenu S, Pareyson D, Pisciotta C, Tofaris GK, Nemeth AH, Ealing J, Radunovic A, Kearney S, Kumar KR, Vucic S, Kennerson M, Reilly MM, Houlden H, Deveson I, Tucci A, Taroni F, Cortese A
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Ataxia-telangiectasia: epidemiology, pathogenesis, clinical phenotype, diagnosis, prognosis and management.
Amirifar P, Ranjouri MR, Lavin M, Abolhassani H, Yazdani R, Aghamohammadi A
Expert Rev Clin Immunol 2020 Sep;16(9):859-871. Epub 2020 Oct 15 doi: 10.1080/1744666X.2020.1810570. PMID: 32791865
Ataxia telangiectasia: a review.
Rothblum-Oviatt C, Wright J, Lefton-Greif MA, McGrath-Morrow SA, Crawford TO, Lederman HM
Orphanet J Rare Dis 2016 Nov 25;11(1):159. doi: 10.1186/s13023-016-0543-7. PMID: 27884168Free PMC Article
Autosomal recessive cerebellar ataxias.
Palau F, Espinós C
Orphanet J Rare Dis 2006 Nov 17;1:47. doi: 10.1186/1750-1172-1-47. PMID: 17112370Free PMC Article
Carbohydrate-deficient glycoprotein syndromes.
Gordon N
Postgrad Med J 2000 Mar;76(893):145-9. doi: 10.1136/pmj.76.893.145. PMID: 10684323Free PMC Article

Clinical prediction guides

Biallelic MED27 variants lead to variable ponto-cerebello-lental degeneration with movement disorders.
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
Update on Cerebellar Ataxia with Neuropathy and Bilateral Vestibular Areflexia Syndrome (CANVAS).
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Cerebellum 2021 Oct;20(5):687-700. Epub 2020 Oct 4 doi: 10.1007/s12311-020-01192-w. PMID: 33011895Free PMC Article
More than ataxia - Movement disorders in ataxia-telangiectasia.
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Symptomatic myoclonus.
Borg M
Neurophysiol Clin 2006 Sep-Dec;36(5-6):309-18. Epub 2007 Jan 17 doi: 10.1016/j.neucli.2006.12.006. PMID: 17336775

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