It is to be noted that mutations in the HBA1 and HBA2 gene in patients is normally manifested as alpha-thalassaemia, an inherited disorder that can range in severity from a mild form of anaemia to very severe anaemia in combination with several other clinical characteristics, such as hepatosplenomegaly and cardiovascular deformities, typically leading to fetal death14,15. This evidence concerns the gene HBA1 and anemia (phenotype).