raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:99945

Autosomal dominant Charcot-Marie-Tooth disease type 2L

Synonyms: CMT2L

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Adult
Status
active

A form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy. In the single family reported to date, CMT2L onset is between 15 and 33 years. Patients present with a symmetric distal weakness of legs and occasionally of the hands, absent or reduced tendon reflexes, distal legs sensory loss and frequently a pes cavus. Progression is slow.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal dominant Charcot-Marie-Tooth disease type 2LCMT2L
frMaladie de Charcot-Marie-Tooth autosomique dominante type 2L= en
deCharcot-Marie-Tooth-Krankheit, autosomal-dominante, Typ 2L= en
esEnfermedad de Charcot-Marie-Tooth autosómica dominante tipo 2L
itMalattia di Charcot-Marie-Tooth autosomica dominante, tipo 2L= en
nlAutosomaal dominante ziekte van Charcot-Marie-Tooth type 2L= en
ptDoença de Charcot-Marie-Tooth autossómica dominante tipo 2L
plAutosomalna dominująca choroba Charcota, Mariego i Tootha typu 2L= en
csAutozomálně dominantní Charcotova-Marieova-Toothova nemoc, typ 2LCMT2L · Autozomálně dominantní Charcot-Marie-Toothova nemoc, typ 2L
ukАутосомно-домінантна хвороба Шарко-Марі-Тута, тип 2L= en
zh常染色体显性遗传腓骨肌萎缩症2L型= en
trOtozomal dominant Charcot-Marie-Tooth hastalığı tip 2L= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608673Evalidated
ICD-10G60.0NTBTattributedvalidated
ICD-118C20.1NTBTindexvalidated
MONDO0012096Evalidated
UMLSC4304673Evalidated

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
HSPB8Disease-causing germline mutation(s) inAssessedHGNC:30171ENSG0000015213760801412q24.23heat shock protein family B (small) member 820301462[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families1 familiesWorldwideFamily(ies)Validated15021985[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_15021985[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