COL6A2 and Ullrich congenital muscular dystrophy 1A: Although these criteria have been met for most of the variants in Tables 1 and 3, for many of these variants (notably COL6A2:c.1402C>T [underlying Ullrich congenital muscular dystrophy type 1] which is present in 1.65% of Syrian Jews) carrier frequency had not been described previously in Syrian Jews.