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The humoral immune response to Epstein–Barr virus (EBV) in classical Hodgkin lymphoma (cHL) stratified by EBV tumor status is unclear. We examined IgG and IgA antibody responses against 202 protein sequences representing 86 EBV proteins using a microarray and sera from 139 EBV‐positive cHL cases, 70 EBV‐negative cHL cases and 141 population‐based controls frequency matched to EBV‐positive cHL cases on sex and age by area (UK, Denmark and Sweden). We leveraged existing data on the proportion of circulating B‐cells infected by EBV and levels of serum CCL17, a chemokine secreted by cHL tumor cells, from a subset of the cHL cases in the UK. Total IgG but not IgA response level was significantly different between EBV‐positive cHL cases and controls. The distinct serological response included significant elevations in 16 IgG antibodies and 2 IgA antibodies, with odds ratioshighest vs. lowest tertile > 3 observed for the following EBV proteins: LMP1 (oncogene), BcLF1 (VCAp160, two variants) and BBLF1 (two variants). Our cHL IgG signature correlated with the proportion of circulating EBV‐infected B‐cells, but not serum CCL17 levels. We observed no differences in the anti‐EBV antibody profile between EBV‐negative cHL cases and controls. BdRF1(VCAp40)‐IgG and BZLF1(Zta)‐IgG were identified as the serological markers best able to distinguish EBV‐positive from EBV‐negative cHL tumors. Our results support the hypothesis that differences in the EBV antibody profile are specific to patients with EBV‐positive cHL and are not universally observed as part of a systematically dysregulated immune response present in all cHL cases.

In the original version of this article (1), the left panel of Fig. 2 was incorrectly labeled: the BFRF1 IgG antibody was incorrectly labeled as the BALF2 IgG antibody, and the corresponding sentence in the text was also incorrect. These errors have been corrected in the latest online HTML and PDF versions of the article. The authors regret these errors.

BACKGROUND: Plasmodium ovale and Plasmodium malariae infections are scarcely studied in sub-Saharan Africa, where the Plasmodium falciparum species predominates. The objective of this study is to investigate the prevalence of P. ovale and P. malariae infections and their relationship with common red blood cell polymorphisms in a cohort of 509 individuals from Uganda. METHODS: Three cross-sectional surveys were conducted in individuals of 1-10 and >20 y of age from the Apac district at baseline and 6 and 16 weeks after drug treatment. Malaria infections were assessed by polymerase chain reaction and genotyping was performed for the sickle-cell allele, α-thalassaemia and glucose-6-phosphate dehydrogenase. RESULTS: At baseline, the prevalence of infection was 7.5%, 12.6% and 57.4% for P. ovale, P. malariae and P. falciparum species, respectively. Co-infections were present in 14.1% of individuals, all including P. falciparum parasites. In children 1-5 y of age, the prevalence of P. ovale mono-infections increased significantly from 1.7% to 7.3% over time (p=0.004) while the prevalence of P. malariae and P. falciparum infections declined significantly during this study. After adjusting for confounding and multiple testing, only α-thalassaemia had a statistically significant increase in the odds of P. falciparum infections (odds ratio 1.93 [95% confidence interval 1.26 to 2.94]). CONCLUSIONS: Common red blood cell polymorphisms do not show strong effects on mild Plasmodium infections in this Ugandan population. To understand the extent of this result, similar studies should be carried out in other populations using larger cohorts.

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