PMID- 17530713 OWN - NLM STAT- MEDLINE DCOM- 20070720 LR - 20220408 IS - 0004-3591 (Print) IS - 0004-3591 (Linking) VI - 56 IP - 6 DP - 2007 Jun TI - Serum matrix metalloproteinase 3 is an independent predictor of structural damage progression in patients with ankylosing spondylitis. PG - 1846-53 AB - OBJECTIVE: In prospective studies, only baseline radiographic damage has been identified as an independent predictor of radiographic progression in ankylosing spondylitis (AS). Several biomarkers have been identified as independent predictors of radiographic progression in rheumatoid arthritis, however, and these may be of use in AS. This study was undertaken to analyze serologic biomarkers as predictors of radiographic progression in AS. METHODS: We measured a panel of biomarkers reflecting cartilage turnover and osteoclasis. These biomarkers were cartilage oligomeric matrix protein, human cartilage gp-39 (YKL-40), type II collagen epitopes detected by the C2C and C1,2C degradation assays and the CPII synthesis assay, aggrecan 846 epitope, osteoprotegerin, and matrix metalloproteinase 3 (MMP-3). The analysis was performed in a cohort of AS patients from the Netherlands, Belgium, and France enrolled in a longitudinal study, the Outcome Assessments in Ankylosing Spondylitis International Study. We examined 2-year radiographic progression data scored using the modified Stoke AS Spine Score (mSASSS). RESULTS: Complete data were available on 97 patients. Only the biomarkers YKL-40 and MMP-3 showed weak to moderate univariate correlation with 2-year progression. After adjustment for sex, age, disease duration, C-reactive protein level, and baseline mSASSS, only MMP-3 was significantly associated with 2-year progression (beta = 0.29, P = 0.004). Logistic regression analysis revealed MMP-3 (cutoff 68 ng/ml; odds ratio 9.4 [95% confidence interval 1.6-56]) and baseline mSASSS (cutoff 10 mSASSS units; odds ratio 18.6 [95% confidence interval 2.5-138]) as the only independent predictors of 2-year progression (cutoff 3 mSASSS units; model R(2) = 50%). MMP-3 was primarily contributory in patients who already had substantial baseline damage (>10 mSASSS units). CONCLUSION: These results indicate that MMP-3 is a significant independent predictor of radiographic progression in patients with AS, particularly in those with preexisting radiographic damage. FAU - Maksymowych, Walter P AU - Maksymowych WP AD - University of Alberta, Edmonton, Alberta, Canada. walter.maksymowych@ualberta.ca FAU - Landewe, Robert AU - Landewe R FAU - Conner-Spady, Barbara AU - Conner-Spady B FAU - Dougados, Maxime AU - Dougados M FAU - Mielants, Herman AU - Mielants H FAU - van der Tempel, Hille AU - van der Tempel H FAU - Poole, A Robin AU - Poole AR FAU - Wang, Nandi AU - Wang N FAU - van der Heijde, Desiree AU - van der Heijde D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Arthritis Rheum JT - Arthritis and rheumatism JID - 0370605 RN - 0 (Biomarkers) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Adult MH - Biomarkers/blood MH - Cartilage/metabolism MH - Cohort Studies MH - Disease Progression MH - Female MH - Humans MH - Linear Models MH - Longitudinal Studies MH - Male MH - Matrix Metalloproteinase 3/*blood MH - Middle Aged MH - Osteoclasts/metabolism MH - Predictive Value of Tests MH - Prospective Studies MH - Radiography MH - Severity of Illness Index MH - Spine/diagnostic imaging/*pathology MH - Spondylitis, Ankylosing/*blood/*pathology EDAT- 2007/05/29 09:00 MHDA- 2007/07/21 09:00 CRDT- 2007/05/29 09:00 PHST- 2007/05/29 09:00 [pubmed] PHST- 2007/07/21 09:00 [medline] PHST- 2007/05/29 09:00 [entrez] AID - 10.1002/art.22589 [doi] PST - ppublish SO - Arthritis Rheum. 2007 Jun;56(6):1846-53. doi: 10.1002/art.22589.