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An ATP2B4 polymorphism protects against malaria in pregnancy
George Bedu-Addo1, Stefanie Meese, Frank P Mockenhaupt
1Department of Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
A common gene variant in ATP2B4 protects pregnant women in Ghana from malaria and related anemia. This finding suggests the protective effect extends beyond severe childhood malaria.
Area of Science:
- Genetics
- Immunology
- Obstetrics
Background:
- Polymorphisms in ATP2B4, which encodes a calcium pump, are known to protect against severe childhood malaria.
- Malaria during pregnancy poses significant risks to both mother and child.
Purpose of the Study:
- To investigate the influence of a specific ATP2B4 polymorphism (rs10900585) on malaria infection and adverse pregnancy outcomes in Ghanaian women.
- To determine if ATP2B4 variant-associated protection against malaria extends to pregnancy.
Main Methods:
- A cohort of 834 delivering Ghanaian women was studied.
- The presence of the ATP2B4 polymorphism (rs10900585) and Plasmodium falciparum infection were assessed.
- Outcomes including placental infection, parasite density, birth weight, preterm delivery, and malarial anemia were evaluated.
Main Results:
- Homozygous primiparae carrying the rs10900585 polymorphism had a 64% reduced odds of placental Plasmodium falciparum infection.
- The polymorphism did not significantly affect parasite density, low birth weight, or preterm delivery.
- Malarial anemia was substantially reduced in primiparous women with the variant allele, with a corresponding reduced impact on hemoglobin levels.
Conclusions:
- A common ATP2B4 polymorphism offers protection against malaria in pregnancy and associated maternal anemia.
- The protective role of ATP2B4 variants is not confined to severe childhood malaria, indicating broader implications for malaria prevention.
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