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Year : 2014  |  Volume : 5  |  Issue : 3  |  Page : 91-95

Spectrum of thalassemias and hemoglobinopathies in West Bengal: A study of 90,210 cases by cation exchange high-performance liquid chromatography method over a period of 8 years

1 Department of Pathology, BS Medical College, Bankura, India
2 Department of Pathology, Medical College, Kolkata, West Bengal, India
3 Serum Analysis Center, Shyambazar, Kolkata, West Bengal, India

Correspondence Address:
Santosh Kumar Mondal
Teenkanya Complex, Flat 1B, Block B, 204 R N Guha Road, Dumdum, Kolkata - 700 028, West Bengal
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1658-5127.141993

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Background: Thalassemias and hemoglobinopathies are highly prevalent in India. Identification of these disorders is important for epidemiologic purposes and for prevention of thalassemia major and clinically severe hemoglobinopathies. Objectives: The aim of this study was to determine the prevalence of thalassemias and hemoglobinopathies in patients of a tertiary care hospital of West Bengal. Materials and Methods: A prospective study was undertaken in which 90,210 cases were included over a period of 8 years. Clinical history and family history were obtained from each patient. The venous blood samples were analyzed for complete blood count, liver function tests, serum iron, ferritin, cobalamin and folate levels. High-performance liquid chromatography (HPLC) was performed on the samples with Biorad Variant using beta thalassemia short program. Confirmatory tests were done whenever required. Results: Normal hemoglobin (Hb) pattern was observed in 79,897 (88.57%) cases and abnormalities were detected in 10,313 (11.43%) patients. β (beta) thalassemia trait was the most common abnormality found in 3870 (4.29%) patients. HbE trait was found in 2418 (2.68%) cases, and then Eβ thalassemia in 1406 (1.56%) patients and β thalassemia major/intermedia in 1135 (1.26%) cases. Other variants detected included sickle cell trait, HbE disease, sickle cell disease, sickle β thalassemia, HbD-Punjab trait, double heterozygous state of HbS and HbE, double heterozygous state of HbS and HbD, Hb Lepore, HbJ-Meerut and HbH. Conclusion: Premarital and antenatal screenings are important measures to prevent birth of children with severe Hb disorders. HPLC is a rapid and reliable technique for identification of various Hb fractions.

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