A functional polymorphism of the stromelysin gene (MMP-3) influences susceptibility to primary sclerosing cholangitis. - Satsangi, J; Chapman, R; Haldar, N; Donaldson, P; Mitchell, S; Simmons, J; Norris, S; Marshall, SE; Bell, J; Jewell, D; Welsh, K (Gastroenterology, 2001)