Hemoglobin Alpha One Copy Deleted Genotype

**Semantic type:** Laboratory or Test Result

**Definition:** A genetic finding indicating that one copy of chromosome 16 has two functional copies of the hemoglobin alpha (HBA) genes and the other copy of has only one functional HBA gene. This genotype is associated with the alpha thalassemia silent trait.

**Synonyms:** - (-a/aa) - (a-/aa) - (aa/-a) - (aa/a-) - -a/aa - HBA One Copy Deleted Genotype - a-/aa - aa/-a - aa/a- - alpha-globin genotype (aa / a -)