Certified Pediatric Hematology Oncology Nurse (CPHON) Practice Exam

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Hemoglobin E is most commonly found in which region?

North America

Southeast Asia

Hemoglobin E is particularly prevalent in Southeast Asia, where it is notably associated with certain ethnic groups, such as those in Thailand and Cambodia. The mutation that leads to Hemoglobin E results in a form of hemoglobin that can cause mild hemolytic anemia and is often seen in individuals from this region.

In Southeast Asia, the presence of Hemoglobin E has evolved in response to malaria; carriers of Hemoglobin E are thought to have a selective advantage in malaria-endemic areas. This geographical concentration is why Southeast Asia is recognized as the region where Hemoglobin E is most commonly found, distinguishing it from areas like North America, Western Europe, or Africa, where this variant is less frequently seen. This knowledge is crucial for health professionals in understanding the epidemiology of hemoglobinopathies and tailoring their approach to patient care according to the populations they serve.

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Western Europe

Africa

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