42321-0
HTT gene mutations found [Identifier] in Blood or Tissue by Molecular genetics method Nominal
Active
Part Description
LP36037-7 HTT gene
The HTT gene (huntingtin) [HGNC Gene ID:4851] is located on chromosome 4p16.3. Huntingtin is a disease gene linked to Huntington's disease, a neurodegenerative disorder characterized by loss of striatal neurons. This is thought to be caused by an expanded, unstable trinucleotide repeat in the huntingtin gene, which translates as a polyglutamine repeat in the protein product. A fairly broad range in the number of trinucleotide repeats has been identified in normal controls, and repeat numbers in excess of 40 have been described as pathological. The huntingtin locus is large, spanning 180 kb and consisting of 67 exons. The huntingtin gene is widely expressed and is required for normal development. It is expressed as 2 alternatively polyadenylated forms displaying different relative abundance in various fetal and adult tissues. The larger transcript is approximately 13.7 kb and is expressed predominantly in adult and fetal brain whereas the smaller transcript of approximately 10.3 kb is more widely expressed. The genetic defect leading to Huntington's disease may not necessarily eliminate transcription, but may confer a new property on the mRNA or alter the function of the protein. One candidate is the huntingtin-associated protein-1, highly expressed in brain, which has increased affinity for huntingtin protein with expanded polyglutamine repeats. This gene contains an upstream open reading frame in the 5' UTR that inhibits expression of the huntingtin gene product through translational repression.[provided by RefSeq, Jul 2008] [NCBI Gene ID:3064]
Source: National Center for Biotechnology Information (NCBI) Gene, HTT gene
Fully-Specified Name
- Component
- HTT gene targeted mutation analysis
- Property
- Prid
- Time
- Pt
- System
- Bld/Tiss
- Scale
- Nom
- Method
- Molgen
Additional Names
- Long Common Name
- HTT gene mutations found [Identifier] in Blood or Tissue by Molecular genetics method Nominal
- Short Name
- HTT gene Mut Anl Bld/T
- Display Name
- HTT gene targeted mutation analysis Molgen Nom (Bld/Tiss)
- Consumer Name Alpha Get Info
- HTT gene targeted mutation analysis, Blood or tissue specimen
Basic Attributes
- Class
- MOLPATH.MUT
- Type
- Laboratory
- First Released
- Version 2.16
- Last Updated
- Version 2.73
- Change Reason
- Changed gene name from HD to HTT, the current (2012) approved HUGO gene name.; Based on LOINC Committee review (June 2016), "targeted" was added to the Component to clarify that this test is looking for a specific set of mutations as described in the LOINC User Guide under the Molecular Genetics section.
- Order vs. Observation
- Both
- Common Test Rank Get Info
- 18634
Language Variants Get Info
Tag | Language | Translation |
---|---|---|
es-ES | Spanish (Spain) | Gen HD Analisis de mutaciones: |
es-MX | Spanish (Mexico) | Análisis de mutaciones dirigidas al gen HTT: |
fr-CA | French (Canada) | Gène HTT ciblé, analyse de la mutation: |
fr-FR | French (France) | HTT gène mutation cible trouvée: |
it-IT | Italian (Italy) | HD, gene analisi di mutazione mirata: Synonyms: Gene HD Genetica molecolare Mutazione genica Patologia molecolare Presenza o Identità Punto nel tempo (episodio) Sangue Sangue o Tessuto Tessuto & |
ko-KR | Korean (Korea, Republic Of) | HD 유전자 돌연변이 분석: |
nl-NL | Dutch (Netherlands) | HTT-gen doelgerichte mutatie-analyse: Synonyms: HTT gen molgen targeted |
pt-BR | Portuguese (Brazil) | HD análise de mutação genética: Synonyms: Huntington disease; |
ru-RU | Russian (Russian Federation) | HTT ген исследование на мутацию: Synonyms: Кровь Кровь или Ткань Номинальный; |
tr-TR | Turkish (Turkey) | HD geni Mutasyon analizi: |
uk-UA | Ukrainian (Ukraine) | HTT ген аналіз цільової мутації: Synonyms: 5HTT; |
zh-CN | Chinese (China) | HTT 基因 突变分析: Synonyms: Huntington 舞蹈病; |
LOINC Terminology Service (API) using HL7® FHIR® Get Info
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- CodeSystem lookup
- https:
//fhir.loinc.org/CodeSystem/$lookup?system=http: //loinc.org&code=42321-0
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