PIK3CA and atrial fibrillation: An additional 5 coding mutations in BRAF V600E (20.07% AF), CTNNB1 S33Y (14.72% AF), PIK3CA H1047R (13.98% AF), STK11 Q123Q (13.37% AF) and EGFR G719S (13.31% AF) were detected using the eTAm-Seq technology.