PubMed · 14208415
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H L LAU, G S JONES. 1964-09-01. SICKLE CELL--HEMOGLOBIN C DISEASE.. https://pubmed.ncbi.nlm.nih.gov/14208415/
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The four commonest beta chain variants of human hemoglobin (Hb), i.e. Hbs C, D, E, and S were absent or quite infrequent in Japanese. They are occasionally found in visitors and immigrants to Japan recently. Geographical distribution, clinical expression, pathophysiology and diagnosis of Hbs C, D and E are briefly reviewed.
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Between 1970-1990, the Laboratory tested 38,391 specimens for hemoglobinopathies, of which 7,935 were positive. The major abnormalities detected were beta thalassemia trait (4,688), alpha thalassemia trait (1,248) and sickle cell trait (847). Clinically significant hemoglobinopathies detected were Hemoglobin H disease (100), sickle cell disease (67) and sickle cell Hemoglobin C disease (79). Hemoglobinopathies are therefore common in the Hamilton area as a reflection of the cultural diversity of area citizens. Of the 49 patients with thalassemia without documented iron deficiency, 8 (16%) received iron therapy for a variable period of time and 3 were investigated for gastrointestinal blood loss. Hemoglobin abnormalities cause or have the potential to cause clinical disease and they can, if not detected, result in unnecessary iron therapy or gastrointestinal investigation.