Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanX-linked Charcot-Marie-Tooth disease type 1
ORPHA:101075Disease
Also called CMT1X · CMTX1
What it is
A rare genetic peripheral sensorimotor neuropathy characterized by an X-linked dominant inheritance pattern and adolescence onset in males of progressive, distal, moderate to severe muscle weakness and atrophy in lower extremities and intrinsic hand muscles, pes cavus, bilateral foot drop, reduced or absent tendon reflexes, as well as mild to moderate sensory impairment in lower extremities. Females tend to have milder manifestations or may be asymptomatic. Sensorineural deafness and (often transient) central nervous system involvement have also been reported.
Key facts
- Age of onset
- Childhood
- Inheritance
- X-linked dominant
- Classified as
- Disease
Recorded for the broader condition
- Prevalence
- 1-9 / 100 000 (Europe)X-linked Charcot-Marie-Tooth disease
Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.
Signs and symptoms
Very common80–99%
6Sometimes5–29%
9- Ataxia
- Dysarthria
- Excessive daytime somnolence
- Gait disturbance
- Hearing impairment
- Kyphosis
- Language impairment
- Scoliosis
and 1 more in this range
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.