PMID- 21373785 OWN - NLM STAT- MEDLINE DCOM- 20121207 LR - 20211020 IS - 1437-160X (Electronic) IS - 0172-8172 (Print) IS - 0172-8172 (Linking) VI - 32 IP - 6 DP - 2012 Jun TI - Killer immunoglobulin-like receptor and human leukocyte antigen-C genotypes in rheumatoid arthritis primary responders and non-responders to anti-TNF-alpha therapy. PG - 1647-53 LID - 10.1007/s00296-011-1838-6 [doi] AB - The identification of patients who will respond to anti-tumor necrosis factor alpha (anti-TNF-alpha) therapy will improve the efficacy, safety, and economic impact of these agents. We investigated whether killer cell immunoglobulin-like receptor (KIR) genes are related to response to anti-TNF-alpha therapy in patients with rheumatoid arthritis (RA). Sixty-four RA patients and 100 healthy controls were genotyped for 16 KIR genes and human leukocyte antigen-C (HLA-C) group 1/2 using polymerase chain reaction sequence-specific oligonucleotide probes (PCR-SSOP). Each patient received anti-TNF-alpha therapy (adalimumab, etanercept, or infliximab), and clinical responses were evaluated after 3 months using the disease activity score in 28 joints (DAS28). We investigated the correlations between the carriership of KIR genes, HLA-C group 1/2 genes, and clinical data with response to therapy. Patients responding to therapy showed a significantly higher frequency of KIR2DS2/KIR2DL2 (67.7% R vs. 33.3% NR; P = 0.012). A positive clinical outcome was associated with an activating KIR-HLA genotype; KIR2DS2 (+) HLA-C group 1/2 homozygous. Inversely, non-response was associated with the relatively inhibitory KIR2DS2 (-) HLA-C group 1/2 heterozygous genotype. The KIR and HLA-C genotype of an RA patient may provide predictive information for response to anti-TNF-alpha therapy. FAU - McGeough, Cathy M AU - McGeough CM AD - Biomedical Sciences Research Institute, University of Ulster at Coleraine, Cromore Road, Northern Ireland, UK. cathymcgeough@hotmail.co.uk FAU - Berrar, Daniel AU - Berrar D FAU - Wright, Gary AU - Wright G FAU - Mathews, Clare AU - Mathews C FAU - Gilmore, Paula AU - Gilmore P FAU - Cunningham, Rodat T AU - Cunningham RT FAU - Bjourson, Anthony J AU - Bjourson AJ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110304 PL - Germany TA - Rheumatol Int JT - Rheumatology international JID - 8206885 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antirheumatic Agents) RN - 0 (HLA-C Antigens) RN - 0 (Immunoglobulin G) RN - 0 (KIR2DL2 protein, human) RN - 0 (KIR2DS2 protein, human) RN - 0 (Receptors, KIR) RN - 0 (Receptors, KIR2DL2) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Tumor Necrosis Factor-alpha) RN - B72HH48FLU (Infliximab) RN - FYS6T7F842 (Adalimumab) RN - OP401G7OJC (Etanercept) SB - IM MH - Adalimumab MH - Adult MH - Aged MH - Antibodies, Monoclonal/therapeutic use MH - Antibodies, Monoclonal, Humanized/therapeutic use MH - Antirheumatic Agents/*therapeutic use MH - Arthritis, Rheumatoid/diagnosis/*drug therapy/genetics/immunology MH - Case-Control Studies MH - Chi-Square Distribution MH - Etanercept MH - Female MH - HLA-C Antigens/*genetics MH - Heterozygote MH - Homozygote MH - Humans MH - Immunoglobulin G/therapeutic use MH - Infliximab MH - Male MH - Middle Aged MH - Northern Ireland MH - Patient Selection MH - Pharmacogenetics MH - Phenotype MH - Polymerase Chain Reaction MH - Precision Medicine MH - Receptors, KIR/*genetics MH - Receptors, KIR2DL2/*genetics MH - Receptors, Tumor Necrosis Factor/therapeutic use MH - Risk Assessment MH - Risk Factors MH - Severity of Illness Index MH - Time Factors MH - Treatment Failure MH - Tumor Necrosis Factor-alpha/*antagonists & inhibitors/immunology PMC - PMC3364412 EDAT- 2011/03/05 06:00 MHDA- 2012/12/12 06:00 PMCR- 2011/03/04 CRDT- 2011/03/05 06:00 PHST- 2010/07/29 00:00 [received] PHST- 2011/02/18 00:00 [accepted] PHST- 2011/03/05 06:00 [entrez] PHST- 2011/03/05 06:00 [pubmed] PHST- 2012/12/12 06:00 [medline] PHST- 2011/03/04 00:00 [pmc-release] AID - 1838 [pii] AID - 10.1007/s00296-011-1838-6 [doi] PST - ppublish SO - Rheumatol Int. 2012 Jun;32(6):1647-53. doi: 10.1007/s00296-011-1838-6. Epub 2011 Mar 4.