Brugada Phenocopy Associated With the Tyrosine Kinase Inhibitor Avapritinib During Febrile Illness

Brugada phenocopy is a reversible type 1 Brugada electrocardiographic pattern caused by identifiable clinical conditions (such as fever, electrolyte abnormalities, or drug exposure) in patients without true congenital Brugada syndrome (BrS), which is an inherited arrhythmogenic disorder often associated with SCN5A mutations.