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[Haemoglobin M-Homburg (author's transl)]

W Schneider, W Kirsch

    Deutsche Medizinische Wochenschrift (1946)
    |March 12, 1976
    PubMed

    Insights

    Congenital cyanosis caused by Hemoglobin M anomaly is often misdiagnosed as heart disease. This genetic condition results in grey-blue skin but individuals feel well despite abnormal hemoglobin levels.

    Area of Science:

    • Hematology
    • Genetics
    • Medical Diagnostics

    Context:

    • Congenital cyanosis is a condition that causes a bluish discoloration of the skin due to low oxygen levels.
    • Hemoglobin M (HbM) is a rare genetic variant of hemoglobin.
    • Misdiagnosis of congenital cyanosis is common, often attributed to congenital heart disease.

    Purpose:

    • To report a family with multiple affected members across three generations exhibiting congenital cyanosis.
    • To highlight the characteristic presentation of Hemoglobin M anomaly.
    • To emphasize the importance of differentiating HbM from other causes of cyanosis.

    Summary:

    • A family presented with hereditary grey-blue cyanosis due to an alpha-chain Hemoglobin M anomaly.
    • Affected individuals had 20-25% abnormal hemoglobin, with no evidence of cardiopulmonary disease, anemia, or hemolysis.
    • The condition, despite significant cyanosis, did not impair the well-being of the carriers.

    Impact:

    • This case study underscores the need for considering rare hemoglobinopathies in the differential diagnosis of congenital cyanosis.
    • Accurate diagnosis of Hemoglobin M anomaly prevents unnecessary cardiac investigations and interventions.
    • Understanding the genetic basis of HbM aids in genetic counseling and family planning.

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