Codon 4 ACT→ACA, codon 5 CCT→TCT, and codon 6 GAG→TAG mutations in cis position: A form of thalassemia trait

Abstract
A female of Uttar Pradesh, of Indian origin, who had a transfusion‐dependent child, carried codon 4 ACT→ACA, codon 5 CCT→TCT, and codon 6 GAG→TAG mutations at the cis position. The mutation was detected through sequencing of the amplified β‐globin gene. Heterozygosity is expressed as a thalassemia trait with moderate anemia, low MCV (57 fl), raised HbA2 (6.7%), and normal fetal hemoglobin (1.4%). Am. J. Hematol. 56:187–188, 1997.