• To our knowledge, only six families with familial idiopathic thrombocytopenic purpura (ITP) have been described in the literature. We encountered two elderly siblings with ITP, which normally occurs only in younger persons. It has been clearly demonstrated that ITP is an autoimmune disorder, and there is some evidence that it reflects an inherited immunodeficiency.
(Arch Intern Med 1985;145:2259)
Bogart L, Wittels EG. Idiopathic Thrombocytopenic Purpura in Two Elderly Siblings. Arch Intern Med. 1985;145(12):2259. doi:10.1001/archinte.1985.00360120131025