WRN and atrial fibrillation: A further group of 15 ATP-related genes were highly expressed in AF compared to deutonymphs, consisting of ATP-dependent RNA helicase (n = 5), ATP-binding cassette (n = 3), ATPase (n = 3), DNA replication ATP-dependent helicase (n = 1), ADP/ATP translocase (n = 1), Werner syndrome ATP-dependent helicase (n = 1) and ATP carrier protein (n = 1).