Spherocytosis, Type 4, also known as hereditary spherocytosis type 4, is related to thalassemia and beta-thalassemia, and has symptoms including icterus An important gene associated with Spherocytosis, Type 4 is SLC4A1 (Solute Carrier Family 4 Member 1 (Diego Blood Group)), and among its related pathways/superpathways are Glycosaminoglycan metabolism and Sphingolipid metabolism. Affiliated tissues include bone marrow and bone, and related phenotypes are splenomegaly and hemolytic anemia