Description:
FRIEDREICH ATAXIA 1; FRDA
FRATAXIN; FXN
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Repository
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NIGMS Human Genetic Cell Repository
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| Subcollection |
Heritable Diseases |
| Class |
Disorders of the Nervous System |
| Class |
Disorders with Trinucleotide Expansions |
| Quantity |
25 µg |
| Quantitation Method |
Please see our FAQ |
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Biopsy Source
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Peripheral vein
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Cell Type
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B-Lymphocyte
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Tissue Type
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Blood
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Transformant
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Epstein-Barr Virus
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Sample Source
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DNA from LCL
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Race
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White
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Family Member
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1
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Relation to Proband
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proband
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Confirmation
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Clinical summary/Case history
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Species
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Homo sapiens
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Common Name
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Human
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Remarks
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| IDENTIFICATION OF SPECIES OF ORIGIN |
Species of Origin Confirmed by Nucleoside Phosphorylase,Glucose-6-Phosphate Dehydrogenase, and Lactate Dehydrogenase Isoenzyme Electrophoresis |
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| Gene |
FXN |
| Chromosomal Location |
9q13-q21.1 |
| Allelic Variant 1 |
606829.0001; FRIEDREICH ATAXIA |
| Identified Mutation |
(GAA)n EXPANSION; GAA triplet repeat expansions between 200 and 900 copies in the first intron of the frataxin gene occurred in 71 out of 74 FRDA patients studied by Campuzano et al. [Science 271: 1423-1427 (1996)]. In unaffected individuals the triplet expansion numbered between 7 and 20 units. |
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| Gene |
FXN |
| Chromosomal Location |
9q13-q21.1 |
| Allelic Variant 2 |
606829.0001; FRIEDREICH ATAXIA |
| Identified Mutation |
(GAA)n EXPANSION; GAA triplet repeat expansions between 200 and 900 copies in the first intron of the frataxin gene occurred in 71 out of 74 FRDA patients studied by Campuzano et al. [Science 271: 1423-1427 (1996)]. In unaffected individuals the triplet expansion numbered between 7 and 20 units. |
| Remarks |
Clinically affected; homozygous for the GAA expansion in the frataxin gene with alleles of approximately 200 and 500 repeats. |
| Caballero M, Ge T, Rebelo AR, Seo S, Kim S, Brooks K, Zuccaro M, Kanagaraj R, Vershkov D, Kim D, Smogorzewska A, Smolka M, Benvenisty N, West SC, Egli D, Mace EM, Koren A, Comprehensive analysis of DNA replication timing across 184 cell lines suggests a role for MCM10 in replication timing regulation Human molecular genetics: 2021 |
| PubMed ID: 35394024 |
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| Jama M, Margraf RL, Yu P, Reading NS, Bayrak-Toydemir P, A Comprehensive Triple-Repeat Primed PCR and a Long-Range PCR Agarose-Based Assay for Improved Genotyping of Guanine-Adenine-Adenine Repeats in Friedreich Ataxia The Journal of molecular diagnostics : JMD24:915-923 2021 |
| PubMed ID: 35595154 |
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| Rafehi H, Szmulewicz DJ, Bennett MF, Sobreira NLM, Pope K, Smith KR, Gillies G, Diakumis P, Dolzhenko E, Eberle MA, Barcina MG, Breen DP, Chancellor AM, Cremer PD, Delatycki MB, Fogel BL, Hackett A, Halmagyi GM, Kapetanovic S, Lang A, Mossman S, Mu W, Patrikios P, Perlman SL, Rosemergy I, Storey E, Watson SRD, Wilson MA, Zee DS, Valle D, Amor DJ, Bahlo M, Lockhart PJ, Bioinformatics-Based Identification of Expanded Repeats: A Non-reference Intronic Pentamer Expansion in RFC1 Causes CANVAS American journal of human genetics105:151-165 2019 |
| PubMed ID: 31230722 |
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| Jasoliya M, Sacca F, Sahdeo S, Chedin F, Pane C, Brescia Morra V, Filla A, Pook M, Cortopassi G, Dimethyl fumarate dosing in humans increases frataxin expression: A potential therapy for Friedreich's Ataxia PloS one14:e0217776 2018 |
| PubMed ID: 31158268 |
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| Omar M.Khdour Indrajit Bandyopadhyay Sandipan Roy Chowdhury Nishant P.Visavadiya Sidney M. Hecht, Lipophilic methylene blue analogues enhance mitochondrial function and increase frataxin levels in a cellular model of Friedreich’s ataxia Bioorganic & Medicinal Chemistry26:3359-3369 2018 |
| PubMed ID: 29773347 |
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| Tankard RM, Bennett MF, Degorski P, Delatycki MB, Lockhart PJ, Bahlo M, Detecting Expansions of Tandem Repeats in Cohorts Sequenced with Short-Read Sequencing Data American journal of human genetics26:3359-3369 2017 |
| PubMed ID: 30503517 |
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| Willis JH, Isaya G, Gakh O, Capaldi RA, Marusich MF, Lateral-flow immunoassay for the frataxin protein in Friedreich's ataxia patients and carriers Molecular genetics and metabolism94:491-7 2008 |
| PubMed ID: 18485778 |
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