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Start free with EleplanLaminin subunit alpha 2-related congenital muscular dystrophy
ORPHA:258Malformation syndrome
Also called CMD1A · Congenital muscular dystrophy due to laminin alpha2 deficiency · Congenital muscular dystrophy type 1A · MDC1A · Merosin-negative congenital muscular dystrophy
What it is
A rare congenital muscular dystrophy characterized by severe hypotonia, muscle weakness and muscle wasting presenting at birth or during infancy, poor spontaneous movements and contractures of the large joints. Patients have poor motor development leading to feeding and respiratory issues.
Key facts
- Prevalence
- 1-9 / 1 000 000
- Age of onset
- Antenatal, Infancy, Neonatal
- Inheritance
- Autosomal recessive
- Classified as
- Malformation syndrome
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
15Common30–79%
13Sometimes5–29%
23- Abnormality of visual evoked potentials
- Arrhythmia
- Atelectasis
- Cardiomyopathy
- Cognitive impairment
- Decreased body weight
- Dysphagia
- Focal-onset seizure
and 15 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.
Benefit programs to look at
Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.
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.
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