SLC29A3 and sinus histiocytosis with massive lymphadenopathy: Mutations in SLC29A3 cause an expanding spectrum of human monogenic diseases (H syndrome, Pigmented Hypertrichosis with Insulin-dependent Diabetes Mellitus (PHID) syndrome, Rosai Dorfman Disease (RDD), and Sinus Histiocytosis with Massive Lymphadenopathy (SHML), etc.)with anemia, erythroid hypoplasia, and red cell aplasia as accompanying features4–12.