However, forced expression of SOX18 in HE during endothelial-to-hematopoietic transition (EHT) greatly increases NK versus T cell lineage commitment of hematopoietic progenitors (HPs) arising from HE predominantly expanding CD34+CD43+CD235a/CD41a−CD45− multipotent HPs and altering the expression of genes related to T cell and Toll-like receptor signaling. The gene discussed is GYPA; the disease is hereditary elliptocytosis.