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Related Experiment Videos

Hb S Mobile: a new genetic combination.

R G Schneider, J Zusman, W B Smith

    Hemoglobin
    |January 1, 1983
    PubMed
    Summary

    Hemoglobin Mobile S, a combination of Hb Mobile and Hb S, was identified in a healthy individual. This genetic variant shows no clinical or hematologic abnormalities, suggesting a benign clinical significance.

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    Area of Science:

    • Hematology
    • Genetics
    • Molecular Biology

    Background:

    • Hemoglobinopathies represent a group of inherited blood disorders.
    • Co-inheritance of different hemoglobin variants can lead to diverse clinical presentations.
    • Distinguishing between electrophoretically similar hemoglobin variants is crucial for accurate diagnosis.

    Purpose of the Study:

    • To report the identification and characterization of a novel hemoglobin combination: Hemoglobin Mobile S (Hb Mobile/Hb S).
    • To evaluate the clinical and hematologic status of an individual with Hb Mobile S.
    • To describe methods for differentiating Hb Mobile S from clinically significant variants like Hb SD Los Angeles.

    Main Methods:

    • Hemoglobin electrophoresis was performed on patient hemolysate.
    • Family members were screened for hemoglobin variants.
    • Clinical and hematologic parameters were assessed in the proband and family.

    Main Results:

    • A healthy black man was found to have Hb Mobile S, with hemolysate resembling Hb S on electrophoresis.
    • Family studies revealed Hb AS in the mother and sister, and Hb A Mobile in the father and brother.
    • No clinical or hematologic abnormalities were observed in any family member.
    • Hb Mobile demonstrated a slightly decreased oxygen affinity, deemed clinically insignificant.

    Conclusions:

    • The co-inheritance of Hb Mobile and Hb S (Hb Mobile S) appears to be clinically benign.
    • Hb Mobile S does not present with the severe phenotype associated with other Hb S combinations.
    • Simple electrophoretic methods can differentiate Hb Mobile S from Hb SD Los Angeles, aiding in diagnosis and management.

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