raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:487814

Autosomal dominant Charcot-Marie-Tooth disease type 2 due to DGAT2 mutation

Synonyms: CMT2 due to DGAT2 mutation

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Childhood
Status
active

A rare autosomal dominant hereditary axonal motor and sensory neuropathy characterized by childhood onset of slowly progressive distal muscle weakness and atrophy primarily affecting the lower limbs, associated with sensory impairment and ataxia presenting with an unsteady, broad-based gait and frequent falls. Additional signs include decreased deep tendon reflexes and hand tremor.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal dominant Charcot-Marie-Tooth disease type 2 due to DGAT2 mutationCMT2 due to DGAT2 mutation
frMaladie de Charcot-Marie-Tooth autosomique dominante type 2 due à une mutation de DGAT2CMT2 due à une mutation du DGAT2
deCharcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2, durch DGAT2-GenmutationCMT2 durch DGAT2-Genmutation
esEnfermedad de Charcot-Marie-Tooth autosómica dominante tipo 2 por una mutación en el gen DGAT2CMT2 por una mutación en el gen DGAT2
itMalattia di Charcot-Marie-Tooth autosomica dominante tipo 2 da mutazione di DGAT2
nlAutosomaal dominante ziekte van Charcot-Marie-Tooth type 2 als gevolg van een DGAT2-mutatieCMT2 als gevolg van een DGAT2-mutatie
ptDoença de Charcot-Marie-Tooth autossómica dominante tipo 2 por mutação DGAT2
plAutosomalna dominująca choroba Charcota, Mariego i Tootha typu 2 spowodowana mutacją DGAT2CMT2 z powodu mutacji w DGAT2
csAutozomálně dominantní Charcot-Marie-Toothova nemoc typ 2 podmíněná mutací v genu DGAT2CMT2 způsobená mutací DGAT2
ukАутосомно-домінантна хвороба Шарко-Марі-Тута, тип 2, зумовлена мутацією DGAT2CMT2 внаслідок мутації DGAT2
zh常染色体显性Charcot-Marie-Tooth病2型DGAT2突变相关夏洛特-玛丽齿病2型DGAT2突变相关
trDGAT2 mutasyonuna bağlı otozomal dominant Charcot-Marie-Tooth hastalığı tip 2DGAT2 mutasyonu bağlı CMT2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10G60.0NTBTattributedvalidated
MONDO0044625Evalidated
UMLSC5567515Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DGAT2Disease-causing germline mutation(s) inAssessedHGNC:16940ENSG0000006228260698311q13.5diacylglycerol O-acyltransferase 226786738[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated26786738[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_26786738[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card