Bethlem myopathy
Bethlem myopathy
A rare autosomal dominant proximal myopathy (OMIM:158810) of early childhood onset characterised by joint contractures, most often affecting the elbows and ankles.Molecular pathology
Caused by defects of:
▪ COL6A1, which encodes the alpha 1 subunit;
▪ COL6A2, which encodes the alpha 2 subunit; and
▪ COL6A3, which encodes the alpha 3 subunit.