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Related Experiment Videos

Elevated serum thyroxine-binding globulin by X-chromosome transmission.

J Penhaligon, M L Wellby

    Acta Endocrinologica
    |March 1, 1982
    PubMed
    Summary

    Hereditary high thyroxine-binding globulin (TBG) affects 17 of 29 family members, suggesting X-linked inheritance. This genetic trait impacts thyroid hormone levels and requires further study.

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    Area of Science:

    • Endocrinology
    • Human Genetics

    Background:

    • Hereditary thyroxine-binding globulin (TBG) abnormalities can alter thyroid hormone levels.
    • Understanding the genetic basis of TBG variations is crucial for diagnosing thyroid disorders.

    Observation:

    • A kindred exhibited a high prevalence of hereditary increased serum TBG.
    • 17 out of 29 family members displayed elevated TBG, indicated by high total thyroxine (T4) and triiodothyronine (T3) with low T3 resin uptake.

    Findings:

    • Increased serum TBG was confirmed in 12 individuals by measuring T4 binding capacity.
    • The inheritance pattern strongly suggests an X-linked genetic transmission.

    Implications:

    • This X-linked trait may predispose individuals to thyroid dysfunction, as seen in affected members with thyrotoxicosis or post-thyroidectomy status.
    • Further research into this kindred can elucidate the specific genetic mutations and their clinical significance.

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