COL6A1 and Ullrich congenital muscular dystrophy: Further, the article by Lampe AK et al. [8] about collagen VI related muscle disorders describes that mutations in the collagen genes (COL6A1, COL6A2, and COL6A3) can give rise to Bethlem myopathy (BM) and Ullrich congenital muscular dystrophy (UCMD).