Any familial atrial fibrillation in which the cause of the disease is a mutation in the SCN5A gene. The disease is MONDO_0013530 (atrial fibrillation, familial, 10). Also known as: SCN5A familial atrial fibrillation, atrial fibrillation, familial, type 10, familial atrial fibrillation caused by mutation in SCN5A.