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[alpha-thalassemia among Danish immigrants]
Henrik S Birgens1, Hans Karle, Pia Taaning
1Medicinsk haematologisk afdeling L, Amtssygehuset i Herlev, DK-2730 Herlev.
Ugeskrift for Laeger
|October 5, 2002
Summary
Alpha-thalassemia, a common hereditary anemia, is prevalent in Danish immigrants. Screening is recommended for alpha-thalassemia, including the severe alpha 0-deletion, and prenatal diagnosis.
Area of Science:
- Hematology
- Medical Genetics
Background:
- Alpha-thalassemia is the most prevalent hereditary anemia globally.
- Danish immigrants often originate from regions with high alpha-thalassemia prevalence.
Purpose of the Study:
- To determine the frequency of alpha-thalassemia in Danish immigrants.
- To assess the clinical significance of alpha-thalassemia in this population.
Main Methods:
- Utilized PCR-based methods to detect alpha-thalassemia haplotypes in patient samples.
- Analyzed samples with MCV < or = 80 fl over one year, and all samples for three months.
Main Results:
- Identified alpha-thalassemia haplotypes in 23.8% of individuals with MCV < or = 80 fl.
- The -alpha 3.7 haplotype was most common (91%); alpha 0-deletion found in 15.8% of cases.
- Estimated overall alpha-thalassemia prevalence in Danish immigrants to be 3-8%.
Conclusions:
- Alpha-thalassemia is a significant, non-rare diagnosis in Denmark.
- Advocates for a national strategy including screening for alpha 0-deletion and prenatal diagnosis.