Myotilinopathy (MFM3) is caused by mutations on chromosome 5 in the myotilin gene (see LGMD1A).
Mutations in the caveolin-3 gene cause autosomal dominant limb-girdle muscular dystrophy. Nat. Genet. (1998). doi:10.1038/ng0498-365 Hauser, M. A.
Supporting this observation, only missense mutations were found so far in the myotilin, lamin A/C and caveolin-C genes, responsible respectively for LGMD1A, 1B and 1C (data