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Start free with EleplanAutosomal dominant centronuclear myopathy
ORPHA:169189Disease
Also called AD-CNM
What it is
A rare, autosomal dominant congenital myopathy characterized by numerous centrally placed nuclei on muscle biopsy and clinical features of a congenital myopathy (hypotonia, distal/proximal muscle weakness, rib cage deformities (sometimes associated with respiratory insufficiency), ptosis, ophthalmoparesis and weakness of the muscles of facial expression with dysmorphic facial features.
Key facts
- Age of onset
- Adolescent, Adult, Childhood, Infancy, Neonatal
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Signs and symptoms
Common30–79%
17- Abnormality of the foot musculature
- Decreased fetal movement
- Delayed gross motor development
- EMG: myopathic abnormalities
- Gait disturbance
- Generalized hypotonia
- Large for gestational age
- Macrocephaly at birth
- Mildly elevated creatine kinase
- Muscle fibrillation
- Polyhydramnios
- Proximal muscle weakness in lower limbs
- Proximal muscle weakness in upper limbs
- Ptosis
- Spontaneous abortion
- Thin ribs
- Type 1 muscle fiber predominance
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.
Genes
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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