PMID- 23637322 OWN - NLM STAT- MEDLINE DCOM- 20140124 LR - 20161125 IS - 1499-2752 (Electronic) IS - 0315-162X (Linking) VI - 40 IP - 6 DP - 2013 Jun TI - Soluble biomarkers associated with response to treatment with tumor necrosis factor inhibitors in psoriatic arthritis. PG - 866-71 LID - 10.3899/jrheum.121162 [doi] AB - OBJECTIVE: To identify soluble biomarkers associated with response to therapy with tumor necrosis factor inhibitors (TNFi) in patients with psoriatic arthritis (PsA). METHODS: The study was conducted at a PsA clinic where patients are assessed every 6 months, and serum samples are collected and stored once a year at the time of clinical assessment. Forty patients with active PsA who gave serum samples prior to treatment with TNFi and after at least 3 months of therapy were identified. Patients were classified as TNFi responders if tender joint count was < 3, swollen joint count was 0, and Psoriasis Area and Severity Index score was < 4 at the time the second sample was collected. The following biomarkers were tested by ELISA: TNF superfamily 14, matrix metalloprotease-3 (MMP-3), receptor activator of nuclear factor kappa-B ligand, osteoprotegerin, cartilage oligomeric matrix protein (COMP), CPII, C2C and C1-2C, CS-846, and highly sensitive C-reactive protein. Paired t tests and logistic regression was used for statistical analyses. RESULTS: After a mean treatment duration of 11 months with TNFi (etanercept 28 patients, adalimumab 6, golimumab 4, infliximab 2), 29 patients were classified as TNFi responders. Baseline level of MMP-3 was independently associated with responder status (OR 1.067 for each 1-unit increase, p = 0.045). A reduction in MMP-3 levels with therapy increased the odds of achieving response (OR 1.213 for each 1-unit change, p = 0.030), whereas a reduction in COMP decreased the odds (OR 0.587, for each 100-unit increase, p = 0.039). None of the other biomarkers was associated with response. CONCLUSION: Baseline as well as reduction in serum MMP-3 and increase in serum COMP are independently associated with response to TNFi therapy in patients with PsA. FAU - Chandran, Vinod AU - Chandran V AD - Department of Medicine, Division of Rheumatology, University of Toronto, Toronto, Canada. FAU - Shen, Hua AU - Shen H FAU - Pollock, Remy A AU - Pollock RA FAU - Pellett, Fawnda J AU - Pellett FJ FAU - Carty, Adele AU - Carty A FAU - Cook, Richard J AU - Cook RJ FAU - Gladman, Dafna D AU - Gladman DD LA - eng GR - Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130501 PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antirheumatic Agents) RN - 0 (Biomarkers) RN - 0 (Cartilage Oligomeric Matrix Protein) RN - 0 (Immunoglobulin G) RN - 0 (Osteoprotegerin) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Tumor Necrosis Factor-alpha) RN - 91X1KLU43E (golimumab) RN - B72HH48FLU (Infliximab) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - FYS6T7F842 (Adalimumab) RN - OP401G7OJC (Etanercept) SB - IM MH - Adalimumab MH - Adult MH - Antibodies, Monoclonal/therapeutic use MH - Antibodies, Monoclonal, Humanized/therapeutic use MH - Antirheumatic Agents/*therapeutic use MH - Arthritis, Psoriatic/*blood/drug therapy MH - Biomarkers/blood MH - Cartilage Oligomeric Matrix Protein/blood MH - Etanercept MH - Female MH - Humans MH - Immunoglobulin G/therapeutic use MH - Infliximab MH - Male MH - Matrix Metalloproteinase 3/blood MH - Middle Aged MH - Osteoprotegerin/blood MH - Receptors, Tumor Necrosis Factor/therapeutic use MH - Severity of Illness Index MH - Treatment Outcome MH - Tumor Necrosis Factor-alpha/*antagonists & inhibitors OTO - NOTNLM OT - BIOMARKERS OT - PSORIASIS OT - PSORIATIC ARTHRITIS OT - TREATMENT OT - TUMOR NECROSIS FACTOR INHIBITORS EDAT- 2013/05/03 06:00 MHDA- 2014/01/25 06:00 CRDT- 2013/05/03 06:00 PHST- 2013/05/03 06:00 [entrez] PHST- 2013/05/03 06:00 [pubmed] PHST- 2014/01/25 06:00 [medline] AID - jrheum.121162 [pii] AID - 10.3899/jrheum.121162 [doi] PST - ppublish SO - J Rheumatol. 2013 Jun;40(6):866-71. doi: 10.3899/jrheum.121162. Epub 2013 May 1.