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Related Experiment Videos

Different H deficient phenotypes present in one kindred.

C Salmon, P Rouger, L Rodier

    Revue Francaise De Transfusion Et Immuno-Hematologie
    |July 1, 1980
    PubMed
    Summary
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    This study identifies two distinct H deficient phenotypes within a single family. Bombay-like phenotypes were found to be indistinguishable from Hz ABH non-secretor individuals, suggesting a potential genetic link.

    Area of Science:

    • Genetics
    • Immunology
    • Hematology

    Background:

    • H deficient phenotypes, including the rare Bombay phenotype, present unique challenges in blood transfusion and serological studies.
    • Distinct phenotypes within a single kindred suggest complex genetic inheritance patterns or novel genetic interactions.

    Purpose of the Study:

    • To investigate the genetic basis of two different H deficient phenotypes observed in a single kindred.
    • To differentiate between true Bombay phenotype and a potentially related Hz phenotype based on serological and genetic markers.

    Main Methods:

    • Phenotypic analysis of H deficient individuals within the kindred.
    • Serological testing for ABH antigens and I antigen levels in plasma.
    • Application of Oriol's hypothesis to explain observed genetic patterns.

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    Main Results:

    • Three individuals exhibited a Bombay-like phenotype, while another branch showed an Hz phenotype.
    • The Bombay-like phenotype was found to be indistinguishable from Hz ABH non-secretor (Hz sese) individuals.
    • Elevated I antigen levels in the plasma of Bombay-like individuals supported the Hz ABH non-secretor hypothesis over a true Bombay phenotype.

    Conclusions:

    • The observed Bombay-like phenotypes are likely due to the Hz ABH non-secretor (Hz sese) genotype, which mimics the true Bombay phenotype.
    • A new hypothesis suggests a recombining haplotype (h Se) in individuals with the Hz phenotype, distinct from the original (h se) haplotype.