Any paroxysmal nocturnal hemoglobinuria in which the cause of the disease is a mutation in the PIGT gene. The disease is Monarch Disease Ontology id MONDO_0014166 (paroxysmal nocturnal hemoglobinuria 2). Also known as: PIGT paroxysmal nocturnal hemoglobinuria, paroxysmal nocturnal hemoglobinuria 2, autosomal dominant, somatic mutation, paroxysmal nocturnal hemoglobinuria caused by mutation in PIGT, paroxysmal nocturnal hemoglobinuria type 2.