Association of HLA alleles with Plasmodium falciparum severity in Malian children

KE Lyke, MA Fernández‐Viňa, K Cao… - Tissue …, 2011 - Wiley Online Library
KE Lyke, MA Fernández‐Viňa, K Cao, J Hollenbach, D Coulibaly, AK Kone, A Guindo…
Tissue Antigens, 2011Wiley Online Library
Pre‐erythrocytic immunity to Plasmodium falciparum malaria is likely to be mediated by T‐
cell recognition of malaria epitopes presented on infected host cells via class I and II major
histocompatibility complex (MHC) antigens. To test for associations of human leukocyte
antigen (HLA) alleles with disease severity, we performed high‐resolution typing of HLA
class I and II loci and compared the distributions of alleles of HLA‐A,‐B,‐C and‐DRB1 loci in
359 Malian children of Dogon ethnicity with uncomplicated or severe malaria. We observed …
Pre‐erythrocytic immunity to Plasmodium falciparum malaria is likely to be mediated by T‐cell recognition of malaria epitopes presented on infected host cells via class I and II major histocompatibility complex (MHC) antigens. To test for associations of human leukocyte antigen (HLA) alleles with disease severity, we performed high‐resolution typing of HLA class I and II loci and compared the distributions of alleles of HLA‐A, ‐B, ‐C and ‐DRB1 loci in 359 Malian children of Dogon ethnicity with uncomplicated or severe malaria. We observed that alleles A*30:01 and A*33:01 had higher frequency in the group of patients with cerebral disease compared to patients with uncomplicated disease [A*30:01: gf = 0.2031 vs gf = 0.1064, odds ratio (OR) = 3.17, P = 0.004, confidence interval (CI) (1.94–5.19)] and [A*33:01: gf = 0.0781 vs gf = 0.0266, 4.21, P = 0.005, CI (1.89–9.84)], respectively. The A*30:01 and A*33:01 alleles share some sequence motifs and A*30:01 appears to have a unique peptide binding repertoire compared to other A*30 group alleles. Computer algorithms predicted malaria peptides with strong binding affinity for HLA‐A*30:01 and HLA‐A*33:01 but not to closely related alleles. In conclusion, we identified A*30:01 and A*33:01 as potential susceptibility factors for cerebral malaria, providing further evidence that polymorphism of MHC genes results in altered malaria susceptibility.
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