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Ernest Beutler, MD

JAMA. 1975;233(11):1184-1188.

Abstract
Human red blood cells (RBCs) are subject to an enormous degree of genetic diversity. The variability that occurs may result in anemia, cyanosis, polycythemia, or may cause no hematologic alterations. Genetic abnormalities affecting hemoglobin include the sickling disorders, the unstable hemoglobinopathies, hemoglobinopathies associated with polycythemia or with methemoglobinemia, and the - and β-thalassemias. The most common enzymatic abnormality of RBCs is glucose-6-phosphate dehydrogenase deficiency, but defects of many other enzymes leading to hemolytic anemia have been identified. Deficiencies of RBC enzymes may also be important in the diagnosis of nonhematologic disease and in the evaluation of dietary status.

(JAMA 233:1184-1188, 1975)

Author Affiliations
From the Division of Medicine, City of Hope National Medical Center, Duarte, Calif.

Footnotes
Reprint requests to 1500 E Duarte Rd, Duarte, CA 91010 (Dr. Beutler).

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