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Hereditary haemoglobin disorders in Brazil.

M A Zago, F F Costa

    Transactions of the Royal Society of Tropical Medicine and Hygiene
    |January 1, 1985
    PubMed
    Summary

    Hereditary hemoglobin disorders like HbS, HbC, and beta-thalassemias are common in Brazil due to diverse ancestry. Beta-thalassemias show significant variability, with beta(0) more frequent than beta(+).

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    Area of Science:

    • Hematology
    • Genetics
    • Population Health

    Background:

    • Hereditary hemoglobin disorders are a significant global health concern.
    • Brazil's diverse population, resulting from extensive miscegenation, influences the prevalence and distribution of these genetic conditions.

    Purpose of the Study:

    • To review the incidence and variability of hereditary hemoglobin disorders in Brazil.
    • To identify the most common hemoglobin abnormalities and their genetic patterns within the Brazilian population.

    Main Methods:

    • Review of existing data on hereditary hemoglobin disorders in Brazil.
    • Analysis of reported cases of hemoglobinopathies, including sickle cell disease and thalassemias.

    Main Results:

    • Sickle cell disease (HbS), HbC, and beta-thalassemias are the most prevalent hereditary hemoglobin disorders in Brazil.
    • Compound heterozygotes (e.g., HbS/HbC, S/beta-thalassemia) are common, reflecting the population's mixed ancestry.
    • Beta-thalassemia exhibits diversity, with beta(0)-thalassemia being more frequent than beta(+); alpha-thalassemias are less common.

    Conclusions:

    • The genetic landscape of hemoglobin disorders in Brazil is shaped by its unique demographic history.
    • Understanding the prevalence and patterns of these disorders is crucial for public health strategies and genetic counseling in Brazil.

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