Version 2.78

Descriptions

The GAA trinucleotide repeat expansion in the FXN gene causes Friedreich ataxia, a neuromuscular condition with symptoms of ataxia, impaired speech, spasticity, and gradual loss of strength and sensation in the arms and legs. Most individuals with Friedreich ataxia have the expanded GAA trinucleotide repeat in both copies of the FXN gene. The GAA segment is repeated 66 to more than 1,000 times. About 2 percent of people with this condition have an expanded GAA trinucleotide repeat in one copy of the FXN gene and another kind of mutation in the other copy of the gene. Mutations in the FXN gene disrupt production of frataxin, greatly reducing the amount of this protein in cells. Source: Genetic Home Reference, National Library of Medicine, FXN gene

The FXN gene (frataxin) [HGNC Gene ID:3951] is located on chromosome 9q21.11. This nuclear gene encodes a mitochondrial protein which belongs to FRATAXIN family. The protein functions in regulating mitochondrial iron transport and respiration. The expansion of intronic trinucleotide repeat GAA results in Friedreich ataxia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2009] [NCBI Gene ID:2395] Source: National Center for Biotechnology Information (NCBI) Gene

Reference Information

Type Source Reference
Webcontent Online Mendelian Inheritance in Man®Copyright OMIM® and Online Mendelian Inheritance in Man® are registered trademarks of the Johns Hopkins University. Link to OMIM

Basic Part Properties

Part Name
FXN gene
Part Display Name
FXN gene
Part Type
Component (Describes the core component or analyte measured)
Created On
2004-02-10
Construct for LOINC Short Name
FXN gene

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=LP33147-7
ConceptMap translate
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Language Variants Get Info

Tag Language Translation
zh-CN Chinese (China) FRDA 基因
Synonyms: FARR;Friedreich 共济失调 1;Fxn;X25;人共济蛋白(Human frataxin);人共济蛋白(Human frataxin, 可溶性线粒体蛋白);人类 frataxin (Human frataxin);人类共济蛋白(Human frataxin)
fr-CA French (Canada) Gène FXN
et-EE Estonian (Estonia) FRDA geen
es-ES Spanish (Spain) Gen FXN
it-IT Italian (Italy) FRDA, gene
Synonyms: Gene FRDA
tr-TR Turkish (Turkey) FRDA geni
ru-RU Russian (Russian Federation) FRDA ген
nl-NL Dutch (Netherlands) FRDA-gen
Synonyms: FRDA gen