ATP2A1 and myotonic dystrophy type 1: In BB muscles, except for BIN1 (in both DM1 and DM2 patients), DMD1 (in DM2 patients), and SERCA1 (in DM1 patients), a statistically significant alteration of alternative splicing of the genes examined was present in DM1 and DM2 compared to CTR muscles (data not shown).