PMID- 11872237 OWN - NLM STAT- MEDLINE DCOM- 20020809 LR - 20220316 IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 63 IP - 3 DP - 2002 Mar TI - Infectious complications in sickle cell disease are influenced by HLA class II alleles. PG - 194-9 AB - Despite systematic antibiotic therapy, severe infections (septicemia, meningitis, or osteomyelitis) are a major cause of mortality and morbidity in children with sickle cell disease (SCD). In this study, we explored the possibility that polymorphism at the human leukocyte antigen (HLA) locus might constitute an immunogenetic modifying factor to the intrinsic susceptibility to infection in patients with SCD. A cohort of 80 SCD patients living in Paris, 43 with at least one major infectious complication and 37 without infections, were typed for HLA class II loci by polymerase chain reaction-sequence-specific primers (PCR-SSP). We found that significantly more patients without infections carry the HLA class II DRB1*15 specificity than did patients with infections (21.6% in the first group, versus 4.7% in the second group; chi(2) = 10.47, p(c) = 0.01), supporting a protective effect of this allele. Conversely, significantly more patients were found to carry the DQB1*03 specificity within the group of severe infections, supporting a negative effect (34.9% versus 12.2%, chi(2) = 9.41, p(c) = 0.01). These findings suggest a direct involvement of HLA polymorphism in the development of major infections in SCD. Together with previous data on polymorphism of the Fc receptor and of the mannose-binding lectin, they provide evidence for a polygenic immunomodulation of the constitutively increased infectious risk in SCD. FAU - Tamouza, Ryad AU - Tamouza R AD - Laboratoire d'Immunologie et d'Histocompatibilite, AP-HP, IUH, and INSERM U396, Hopital Saint-Louis, Paris, France. tamouza@histo.chu-stlouis.fr FAU - Neonato, Maria Grazia AU - Neonato MG FAU - Busson, Marc AU - Busson M FAU - Marzais, Francois AU - Marzais F FAU - Girot, Robert AU - Girot R FAU - Labie, Dominique AU - Labie D FAU - Elion, Jacques AU - Elion J FAU - Charron, Dominique AU - Charron D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-D Antigens) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adolescent MH - Anemia, Sickle Cell/*complications/*genetics MH - Bacteremia/pathology MH - Bacterial Infections/*complications MH - Child MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease MH - HLA-D Antigens/*genetics MH - HLA-DQ Antigens/genetics/metabolism MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/genetics/metabolism MH - HLA-DRB1 Chains MH - Humans MH - Male MH - Meningitis/microbiology/pathology MH - Osteomyelitis/microbiology/pathology MH - Pneumococcal Infections/complications MH - *Polymorphism, Genetic/genetics MH - Salmonella Infections/complications MH - Staphylococcal Infections/complications EDAT- 2002/03/02 10:00 MHDA- 2002/08/10 10:01 CRDT- 2002/03/02 10:00 PHST- 2002/03/02 10:00 [pubmed] PHST- 2002/08/10 10:01 [medline] PHST- 2002/03/02 10:00 [entrez] AID - S0198885901003780 [pii] AID - 10.1016/s0198-8859(01)00378-0 [doi] PST - ppublish SO - Hum Immunol. 2002 Mar;63(3):194-9. doi: 10.1016/s0198-8859(01)00378-0.