- Effects on collagen VI mRNA stability and microfibrillar assembly of three COL6A2 mutations in two families with Ullrich congenital muscular dystrophy. Zhang, R.Z., Sabatelli, P., Pan, T.C., Squarzoni, S., Mattioli, E., Bertini, E., Pepe, G., Chu, M.L. J. Biol. Chem. (2002)