title: Immunoglobulin IgG Fc-receptor polymorphisms and HLA class II molecules in Guillain-Barré syndrome.
abstract: OBJECTIVE
  To analyze host genetic factors immunoglobulin G Fc receptors (FcgammaRs) and human leukocyte antigen (HLA) class II in GBS patients.
  
  
  METHODS
  FcgammaRIIA, IIIA and IIIB polymorphisms were studied in 80 each GBS patients and healthy controls by allele specific PCR. HLA class II DRbeta1 and DQbeta1 typing was performed at the two-digit level by PCR in randomly selected 54 GBS patients and 202 controls.
  
  
  RESULTS
  FcgammaRIIA-H/H (56% vs 9%; P < 0.0001) and FcgammaRIIIA-V/V (40% vs 13%; P < 0.0001) genotypes, H131 allele frequencies (0.73 vs 0.26, P < 0.0001) and HLA DQbeta1*060x (OR, 1.96; 95% CI, 1.26-3.04; P < 0.01) were significantly increased in GBS than controls. DRbeta1*0701 alone (OR, 10; 95% CI, 45.90-2.25; P < 0.001) and together with FcgammaRIIA-H/H (OR, 11.03; 95% CI, 2.63-46.20; P < 0.001) was significantly associated with GBS patients having microbiological evidence of recent infection.
  
  
  CONCLUSIONS
  The study indicates that homozygous FcgammaRIIA and FcgammaRIIIA genotypes and FcgammaRIIA H131 allele are associated with GBS. HLA class II molecule DRbeta1*0701 is identified as novel genetic risk factor for development of GBS in patients with preceding infection.
authors.affiliation: Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
authors.forename: S
authors.initials: S
authors.lastname: Sinha
authors.forename: K N
authors.initials: KN
authors.lastname: Prasad
authors.forename: D
authors.initials: D
authors.lastname: Jain
authors.forename: K K
authors.initials: KK
authors.lastname: Nyati
authors.forename: S
authors.initials: S
authors.lastname: Pradhan
authors.forename: S
authors.initials: S
authors.lastname: Agrawal
mesh_terms: D000328:Adult; D000483:Alleles; D005260:Female; D058851:GPI-Linked Proteins; D020022:Genetic Predisposition to Disease; D020275:Guillain-Barre Syndrome / Q000235:genetics / Q000276:immunology*; D006683:HLA-DQ Antigens / Q000235:genetics* / Q000276:immunology; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics* / Q000276:immunology; D059811:HLA-DRB1 Chains; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D017452:Receptors, IgG / Q000235:genetics* / Q000276:immunology*
chemical_list: C496124:FCGR3A protein, human; C428200:FCGR3B protein, human; C080568:Fc gamma receptor IIA; D058851:GPI-Linked Proteins; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D017452:Receptors, IgG