Congenital muscular dystrophy (CMD) is muscular dystrophy that is present at birth. CMD includes a number of autosomal recessive[1] diseases of muscle weakness and possible joint deformities, present at birth and slowly progressing. Life expectancies for affected individuals vary, although some forms of CMD do not affect life span at all.
Management
Treatment is supportive.[2]
Physical and occupational therapy, surgery, wheelchairs and other assistive technology may be helpful.
Currently there is no cure.
Classification
All such known dystrophies are genetically recessive and result from mutations in a variety of different genes, including those encoding the laminin-α2 chain, fukutin-related protein, LARGE and fukutin, amongst others.
Based on genetic mutation, a classification for CMDs had been proposed in 2004 by Muntoni and Voit.[3]
Name |
Abbreviation |
Group |
OMIM |
Gene and locus |
Laminin-α2–deficient CMD |
MDC1A |
basal membrane/extracellular matrix |
607855 |
LAMA2 at 6q22-q23 |
Ullrich congenital muscular dystrophy |
UCMDs 1, 2 and 3 |
basal membrane/extracellular matrix |
254090 |
COL6A1 at 2q37, COL6A2 at 21q22.3, COL6A3 at 21q22.3 |
Walker-Warburg syndrome |
WWS |
glycosylation of dystroglycan |
236670 |
POMT1 at 9q34.1 and POMT2 at 14q24.3 |
Muscle-eye-brain disease |
MEB |
glycosylation of dystroglycan |
253280 |
POMGNT1 at 1p34-p33 |
Fukuyama CMD |
FCMD |
glycosylation of dystroglycan |
253800 |
FKTN at 9q31 |
CMD plus secondary laminin deficiency 1 |
MDC1B |
glycosylation of dystroglycan |
604801 |
? at 1q42 |
CMD plus secondary laminin deficiency 2 |
MDC1C |
glycosylation of dystroglycan |
606612 |
FKRP at 19q13.3 |
CMD with mental retardation and pachygyria |
MDC1D |
glycosylation of dystroglycan |
608840 |
LARGE at 22q12.3-q13.1 |
Rigid spine with muscular dystrophy Type 1 |
RSMD1 |
other |
602771 |
SEPN1 at 1p36-p35 |
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|
613204 |
ITGA7 at 12q13 |
See also
References
External links
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| The Nine Primary Muscular Dystrophies | |
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| Recent or Ongoing Clinical Trials | |
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anat (h/n, u, t/d, a/p, l)/phys/devp/hist
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noco (m, s, c)/cong (d)/tumr, sysi/epon, injr
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