has causal genotype has causal or contributing genetic variation Hemoglobin Trait Hemoglobin E Trait Request inclusion into NCIT below "Hemoglobin Trait". Few but definitions not freely available http://newbornscreeningcodes.nlm.nih.gov/nb/sc/condition/Hb-F-A-E SCDO Hb AE Hb E-carriers generally do not have any signs or symptoms related to abnormal hemoglobin. Hb E Trait The inheritance of the gene for hemoglobin E from one parent and a gene for normal adult hemoglobin (hemoglobin A) from the other parent. HBB, GLU26LYS Hemoglobin Genotype AE