In the datasets for mouse, rat dataset 1 and human reference genes, we originally included a test set of 4 commonly queried transcripts in the heart failure literature (Apt2a2, Pln, Slc8a1, Nppa) to test the impact of choice of reference genes on gene expression ratios (MI/Sham or Failing/Donor). This evidence concerns the gene SLC8A1 and heart failure.