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Up to: Digenic alpha thalassemia spectrum
HBA1; HBA2-related digenic alpha thalassemia spectrum
Mild microcytic anemia caused by variation in two of the four copies of the alpha hemoglobin genes, which can be in cis (e.g., large deletion of HBA1 and HBA2 genes) or in trans (e.g., HBA1 variant on one chromosome and HBA2 variant on the other chromosome).
This condition has no sub-types.