ATP2A1 and hydrops fetalis: Treatment with PACT siRNA resulted in a modest albeit non-statistically significant correction of SERCA1 splicing in the cell line with the 2000 CTG repeats (Fig 4A-DM1500CTG HF, 4C-DM12000CTGHF) with no observable impact discerned for the IR in either cell line (Fig 4B-DM1500CTG HF, 4D-DM12000CTG HF).