SPTA1 encodes alpha-spectrin, the major cytoskeletal protein of the erythrocyte plasma membrane that associates with band 4.1 and actin to form the membrane's structural superstructure 1. This protein is essential for red blood cell (RBC) membrane stability and deformability by establishing horizontal linkage between the RBC membrane and cytoskeletal proteins 2. Pathogenic SPTA1 variants cause hereditary red blood cell membrane disorders, primarily hereditary spherocytosis (HS), hereditary elliptocytosis (HE), and hereditary pyropoikilocytosis (HPP) 123. Autosomal recessive SPTA1 mutations produce the most severe HS phenotype, with nearly all affected patients requiring splenectomy in early childhood 1. Disease severity correlates with the level of alpha-spectrin protein in RBC cytoskeletons; near-complete deficiency results in transfusion-dependent anemia, potentially fatal hydrops fetalis, and poor response to splenectomy 4. In contrast, monoallelic mutations typically cause milder HE presentations 2. Beyond erythroid function, SPTA1 regulates cellular processes in non-hematologic tissues. In corpus cavernosum cells, SPTA1 downregulation mediates high-fat diet-induced erectile dysfunction through the Hippo signaling pathway, triggering cell pyroptosis 5. Additionally, SPTA1 has been implicated in lung neuroendocrine tumor pathogenesis 6.