An analysis of disease severity based on SMN2 copy number in adults with spinal muscular atrophy.
Muscle Nerve
; 40(4): 652-6, 2009 Oct.
Article
in En
| MEDLINE
| ID: mdl-19760790
ABSTRACT
To evaluate the effect of SMN2 copy number on disease severity in spinal muscular atrophy (SMA), we stratified 45 adult SMA patients based on SMN2 copy number (3 vs. 4 copies). Patients with 3 copies had an earlier age of onset and lower spinal muscular atrophy functional rating scale (SMAFRS) scores and were more likely to be non-ambulatory. There was, however, no difference between the groups in quantitative muscle strength or pulmonary function testing. Functional scale may be a more discriminating outcome measure for SMA clinical trials.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Muscular Atrophy, Spinal
/
Gene Dosage
Type of study:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Muscle Nerve
Year:
2009
Document type:
Article
Affiliation country:
United States