Lack of association between the chemokine receptor 5 polymorphism CCR5delta32 in rheumatoid arthritis and juvenile idiopathic arthritis. 2007

Ewald Lindner, and Gry B N Nordang, and Espen Melum, and Berit Flatø, and Anne Marit Selvaag, and Erik Thorsby, and Tore K Kvien, and Oystein T Førre, and Benedicte A Lie
Institute of Immunology, Rikshospitalet-Radiumhospitalet Medical Center, 0027 Oslo, Norway. Ewald.Lindner@student.uibk.ac.at

BACKGROUND The chemokine receptor CCR5 has been detected at elevated levels on synovial T cells, and a 32 bp deletion in the CCR5 gene leads to a non-functional receptor. A negative association between the CCR5Delta32 and rheumatoid arthritis (RA) has been reported, although with conflicting results. In juvenile idiopathic arthritis (JIA), an association with CCR5 was recently reported. The purpose of this study was to investigate if the CCR5Delta32 polymorphism is associated with RA or JIA in Norwegian cohorts. METHODS 853 RA patients, 524 JIA patients and 658 controls were genotyped for the CCR5Delta32 polymorphism. RESULTS The CCR5Delta32 allele frequency was 11.5% in the controls vs. 10.4% in RA patients (OR = 0.90; P = 0.36) and 9.7% in JIA patients (OR = 0.85; P = 0.20). No decreased homozygosity was observed for CCR5Delta32, as previously suggested. CONCLUSIONS Our data do not support an association between the CCR5Delta32 allele and Norwegian RA or JIA patients. Combining our results with those from a recently published meta-analysis still provide evidence for a role for CCR5Delta32 in RA, albeit substantially weaker than the effect first reported.

UI MeSH Term Description Entries
D009664 Norway A country located in northern Europe, bordering the North Sea and the Atlantic Ocean, west of Sweden. The capital is Oslo. Kingdom of Norway
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D005787 Gene Frequency The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION. Allele Frequency,Genetic Equilibrium,Equilibrium, Genetic,Allele Frequencies,Frequencies, Allele,Frequencies, Gene,Frequency, Allele,Frequency, Gene,Gene Frequencies
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D001171 Arthritis, Juvenile Arthritis in children, with onset before 16 years of age. The terms juvenile rheumatoid arthritis (JRA) and juvenile idiopathic arthritis (JIA) refer to classification systems for chronic arthritis in children. Only one subtype of juvenile arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent. Arthritis, Juvenile Chronic,Arthritis, Juvenile Idiopathic,Arthritis, Juvenile Rheumatoid,Childhood Arthritis,PCJIA,PJIA Polyarticular Juvenile Idiopathic Arthritis,Polyarticular Juvenile Idiopathic Arthritis,Polyarticular-Course Juvenile Idiopathic Arthritis,Still's Disease, Juvenile-Onset,Enthesitis-Related Arthritis, Juvenile,Juvenile Chronic Arthritis,Juvenile Idiopathic Arthritis,Juvenile Rheumatoid Arthritis,Juvenile-Onset Still Disease,Juvenile-Onset Stills Disease,Oligoarthritis, Juvenile,Polyarthritis, Juvenile, Rheumatoid Factor Negative,Polyarthritis, Juvenile, Rheumatoid Factor Positive,Psoriatic Arthritis, Juvenile,Still Disease, Juvenile-Onset,Systemic Arthritis, Juvenile,Arthritides, Childhood,Arthritis, Childhood,Arthritis, Juvenile Enthesitis-Related,Arthritis, Juvenile Psoriatic,Arthritis, Juvenile Systemic,Childhood Arthritides,Chronic Arthritis, Juvenile,Enthesitis Related Arthritis, Juvenile,Idiopathic Arthritis, Juvenile,Juvenile Arthritis,Juvenile Enthesitis-Related Arthritis,Juvenile Oligoarthritis,Juvenile Onset Still Disease,Juvenile Onset Stills Disease,Juvenile Psoriatic Arthritis,Juvenile Systemic Arthritis,Juvenile-Onset Still's Disease,Rheumatoid Arthritis, Juvenile,Still Disease, Juvenile Onset,Still's Disease, Juvenile Onset,Stills Disease, Juvenile-Onset
D001172 Arthritis, Rheumatoid A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated. Rheumatoid Arthritis
D016022 Case-Control Studies Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time. Case-Base Studies,Case-Comparison Studies,Case-Referent Studies,Matched Case-Control Studies,Nested Case-Control Studies,Case Control Studies,Case-Compeer Studies,Case-Referrent Studies,Case Base Studies,Case Comparison Studies,Case Control Study,Case Referent Studies,Case Referrent Studies,Case-Comparison Study,Case-Control Studies, Matched,Case-Control Studies, Nested,Case-Control Study,Case-Control Study, Matched,Case-Control Study, Nested,Case-Referent Study,Case-Referrent Study,Matched Case Control Studies,Matched Case-Control Study,Nested Case Control Studies,Nested Case-Control Study,Studies, Case Control,Studies, Case-Base,Studies, Case-Comparison,Studies, Case-Compeer,Studies, Case-Control,Studies, Case-Referent,Studies, Case-Referrent,Studies, Matched Case-Control,Studies, Nested Case-Control,Study, Case Control,Study, Case-Comparison,Study, Case-Control,Study, Case-Referent,Study, Case-Referrent,Study, Matched Case-Control,Study, Nested Case-Control
D019713 Receptors, CCR5 CCR receptors with specificity for CHEMOKINE CCL3; CHEMOKINE CCL4; and CHEMOKINE CCL5. They are expressed at high levels in T-LYMPHOCYTES; B-LYMPHOCYTES; MACROPHAGES; MAST CELLS; and NK CELLS. The CCR5 receptor is used by the HUMAN IMMUNODEFICIENCY VIRUS to infect cells. Antigens, CD195,CC Chemokine Receptor 5,CCR5 Receptors,CD195 Antigens,CC-CKR5,CCR5 Receptor,CKR5 Receptors,Receptors, CKR5,Receptor, CCR5

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