Hematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
Ezalia Esa has completed her Ministry of Health Malaysia | KKM · Institute for Medical Research Master of Pathology. Hematology is the author's skills and expertise field.
Research Article
Delta-Globin Gene Mutations Complicate the Diagnosis of β-Thalassemia
Author(s): Hassan S*, Ahmad R, Esa E, Yusoff YM, Sahid ENM, Aziz NA, Hamid FSA, Omar SL, Bidin MB, Hamid AH, Zakaria Z and Mokhri NM
Increased Hemoglobin A2 (HbA2) levels are used as invaluable markers for the detection of beta-thalassemia (β-thalassemia) carriers. However, a concomitant delta-globin gene (HBD) mutation reduces the HbA2 level resulting
in the confusion of the β-thalassemia status.
Objectives: We sought to identify HBD mutations leading to low HbA2 level β-thalassemia carriers receiving the
molecular diagnosis at the Institute for Medical Research (IMR), Malaysia.
Methods: Thirty-seven β-thalassemia carriers were ruled out of alpha-thalassemia (α-thalassemia) and underwent
HBD genotyping by Sanger sequencing.
Results: Twenty-two β-thalassemia carriers with HBD mutations were identified. The most common mutations
were HbA2-Indonesia and HbA2-Deventer. The HbA2-Deventer was found in et.. View more»