Apolipoprotein-E4: risk of severe malaria and mortality and cognitive impairment in pediatric cerebral malaria

Giselle Lima-Cooper, Benson J. Ouma, Dibyadyuti Datta, Caitlin Bond, Alejandro A. Soto, Andrea L. Conroy, Gregory S. Park, Paul Bangirana, Moses L. Joloba, Robert O. Opoka, Richard Idro, Chandy C. John

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Abstract

Background: The relationship of apolipoprotein-E4 (APOE4) to mortality and cognition after severe malaria in children is unknown. Methods: APOE genotyping was performed in children with cerebral malaria (CM, n = 261), severe malarial anemia (SMA, n = 224) and community children (CC, n = 213). Cognition was assessed over 2-year follow-up. Results: A greater proportion of children with CM or SMA than CC had APOE4 (n = 162, 31.0%; n = 142, 31.7%; n = 103, 24.2%, respectively, p = 0.02), but no difference was seen in APOE3 (n = 310, 59.4%; n = 267, 59.6%; n = 282, 66.2%, respectively, p = 0.06), or APOE2 (n = 50, 9.6%; n = 39, 8.7%; and n = 41, 9.6%, respectively, p = 0.87). APOE4 was associated with increased mortality in CM (odds ratio, 2.28; 95% CI, 1.01, 5.11). However, APOE4 was associated with better long-term cognition (ß, 0.55; 95% CI, 0.04, 1.07, p = 0.04) and attention (ß 0.78; 95% CI, 0.26, 1.30, p = 0.004) in children with CM < 5 years old, but worse attention (ß, −0.90; 95% CI, −1.69, −0.10, p = 0.03) in children with CM ≥ 5 years old. Among children with CM, risk of post-discharge malaria was increased with APOE4 and decreased with APOE3. Conclusions: APOE4 is associated with higher risk of CM or SMA and mortality in children with CM, but better long-term cognition in CM survivors <5 years of age.

Original languageEnglish (US)
JournalPediatric Research
DOIs
StateAccepted/In press - 2023

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Publisher Copyright:
© 2023, The Author(s), under exclusive licence to the International Pediatric Research Foundation, Inc.

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  • Journal Article

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