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Associations between IgG reactivity to Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) antigens and Burkitt lymphoma in Ghana and Uganda case-control studies

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  • Andriy Derkach
  • Isaac Otim
  • Ruth M Pfeiffer
  • Olusegun O Onabajo
  • Ismail D Legason
  • Hadijah Nabalende
  • Martin D Ogwang
  • Patrick Kerchan
  • Ambrose O Talisuna
  • Leona W Ayers
  • Steven J Reynolds
  • Francis Nkrumah
  • Janet Neequaye
  • Kishor Bhatia
  • Thor G Theander
  • Ludmila Prokunina-Olsson
  • Louise Turner
  • James J Goedert
  • Thomas Lavstsen
  • Sam M Mbulaiteye
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BACKGROUND: Endemic Burkitt lymphoma (eBL) is an aggressive childhood B-cell lymphoma linked to Plasmodium falciparum (Pf) malaria in sub-Saharan Africa. We investigated antibody reactivity to several human receptor-binding domains of the Pf erythrocyte membrane protein 1 (PfEMP1) that play a key role in malaria pathogenesis and are targets of acquired immunity to malaria.

METHODS: Serum/plasma IgG antibody reactivity was measured to 22 Pf antigens, including 18 to PfEMP1 CIDR domains between cases and controls from two populations (149 eBL cases and 150 controls from Ghana and 194 eBL cases and 600 controls from Uganda). Adjusted odds ratios (aORs) for case-control associations were estimated by logistic regression.

FINDINGS: There was stronger reactivity to the severe malaria associated CIDRα1 domains than other CIDR domains both in cases and controls. eBL cases reacted to fewer antigens than controls (Ghana: p = 0·001; Uganda: p = 0·03), with statistically significant lower ORs associated with reactivity to 13+ antigens in Ghana (aOR 0·39, 95% CI 0·24-0·63; pheterogeneity = 0·00011) and Uganda (aOR 0·60, 95% CI 0.41-0·88; pheterogeneity = 0·008). eBL was inversely associated with reactivity, coded as quartiles, to group A variant CIDRδ1 (ptrend = 0·035) in Ghana and group B CD36-binding variants CIDRα2·2 (ptrend = 0·006) and CIDRα2·4 (ptrend = 0·033) in Uganda, and positively associated with reactivity to SERA5 in Ghana (ptrend = 0·017) and Uganda (ptrend = 0·007) and group A CIDRα1·5 variant in Uganda only (ptrend = 0·034).

INTERPRETATION: eBL cases reacted to fewer antigens than controls using samples from two populations, Ghana and Uganda. Attenuated humoral immunity to Pf EMP1 may contribute to susceptibility to low-grade malaria and eBL risk.

FUNDING: Intramural Research Program, National Cancer Institute and National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services.

Original languageEnglish
JournalEBioMedicine
Volume39
Pages (from-to)358-368
Number of pages11
DOIs
Publication statusPublished - Jan 2019

    Research areas

  • Adolescent, Antibodies, Protozoan/metabolism, Binding Sites, Burkitt Lymphoma/immunology, Case-Control Studies, Child, Child, Preschool, Female, Ghana, Humans, Immunoglobulin G/metabolism, Infant, Infant, Newborn, Logistic Models, Malaria, Falciparum/immunology, Male, Odds Ratio, Plasmodium falciparum/immunology, Protozoan Proteins/chemistry, Uganda

ID: 59239595