Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : IBM;
Description : Sporadic inclusion body myositis (IBM) is the most common age-related muscle disease
in the elderly that results in severe disability. Although traditionally considered
an inflammatory myopathy, it is now considered to be more consistent with a myodegenerative
disease (Sugarman et al., 2002; Askanas and Engel, 2006). See 600737 for a description
of a presumably distinct disorder, inclusion body myopathy-2.;