Compared to patients who did not develop new‐onset AF, those who did were older, more often white, more likely to have hypertension, peripheral artery disease, and prior myocardial infarction, and had a higher CHA2DS2‐VASc score and baseline NT‐proBNP, and lower eGFR. The gene discussed is NPPB; the disease is myocardial infarction.