PMID- 29556418 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220316 IS - 2056-5933 (Print) IS - 2056-5933 (Electronic) IS - 2056-5933 (Linking) VI - 4 IP - 1 DP - 2018 TI - Identification of sarilumab pharmacodynamic and predictive markers in patients with inadequate response to TNF inhibition: a biomarker substudy of the phase 3 TARGET study. PG - e000607 LID - 10.1136/rmdopen-2017-000607 [doi] LID - e000607 AB - INTRODUCTION: Interleukin-6 (IL-6) orchestrates formation of an inflammatory pannus, leading to joint damage in rheumatoid arthritis (RA). Sarilumab is a human monoclonal antibody blocking the IL-6Ralpha. In TARGET (NCT01709578), a phase 3 study in adults with moderate-to-severe RA and inadequate response or intolerance to tumour necrosis factor inhibitors, subcutaneous sarilumab 200 mg or 150 mg every 2 weeks (q2w) plus conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) significantly reduced disease activity versus placebo plus csDMARDs. METHODS: Circulating levels of biomarkers associated with synovial inflammation (matrix metalloproteinase 3 (MMP-3), collagen type I MMP-cleaved fragment (C1M), collagen type III MMP-cleaved fragment (C3M)), myeloid (soluble intercellular adhesion molecule 1 (sICAM-1), IL-8 and calprotectin) and lymphoid activation (chemokine, CXC motif, ligand 13 (CXCL13), CXCL10, B cell-activating factor) and bone remodelling (receptor activator of nuclear factor-kappaB ligand (RANKL), osteoprotegerin and osteocalcin) were evaluated in patients from a TARGET substudy. RESULTS: Sarilumab significantly decreased C1M, C3M, CXCL13, MMP-3 and total RANKL levels at week 24 versus placebo; some markers were significantly suppressed at week 2 and normalised to levels in healthy controls. Levels of sICAM-1 were predictive of disease activity score by C-reactive protein and clinical disease activity index low disease activity (LDA) response in the sarilumab 200 mg q2w group at week 12. A trend was observed in which patients with lower sICAM-1 levels at baseline had better response compared with patients with higher sICAM-1. CONCLUSIONS: Sarilumab plus csDMARDs decreased circulating biomarkers of synovial inflammation and bone resorption; sICAM-1 was predictive of achieving LDA with sarilumab. TRIAL REGISTRATION NUMBER: NCT01709578; Post-results. FAU - Gabay, Cem AU - Gabay C AD - University Hospitals of Geneva, Geneva, Switzerland. FAU - Msihid, Jerome AU - Msihid J AD - Sanofi R&D, Chilly-Mazarin, France. FAU - Zilberstein, Moshe AU - Zilberstein M AD - Sanofi R&D, Bridgewater, New Jersey, USA. FAU - Paccard, Caroline AU - Paccard C AD - Sanofi R&D, Chilly-Mazarin, France. FAU - Lin, Yong AU - Lin Y AD - Sanofi Genzyme, Bridgewater, New Jersey, USA. FAU - Graham, Neil M H AU - Graham NMH AD - Regeneron Pharmaceuticals, Inc, Tarrytown, New York, USA. FAU - Boyapati, Anita AU - Boyapati A AD - Regeneron Pharmaceuticals, Inc, Tarrytown, New York, USA. LA - eng SI - ClinicalTrials.gov/NCT01709578 PT - Journal Article DEP - 20180314 PL - England TA - RMD Open JT - RMD open JID - 101662038 PMC - PMC5856917 OTO - NOTNLM OT - *dmards (biologic) OT - *rheumatoid arthritis OT - *treatment COIS- Competing interests: CG has received consulting fees from Roche, Merck, AbbVie, Pfizer, Bristol-Myers Squibb, Sanofi and AB2 Bio. JM, MZ and CP are employees of Sanofi R&D and may hold stock and/or stock options in the company. YL is an employee of Sanofi Genzyme and may hold stock and/or stock options in the company. NMHG and AB are employees of Regeneron Pharmaceuticals, Inc, and may hold stock and/or stock options in the company. EDAT- 2018/03/21 06:00 MHDA- 2018/03/21 06:01 PMCR- 2018/03/14 CRDT- 2018/03/21 06:00 PHST- 2017/10/26 00:00 [received] PHST- 2018/01/23 00:00 [revised] PHST- 2018/02/15 00:00 [accepted] PHST- 2018/03/21 06:00 [entrez] PHST- 2018/03/21 06:00 [pubmed] PHST- 2018/03/21 06:01 [medline] PHST- 2018/03/14 00:00 [pmc-release] AID - rmdopen-2017-000607 [pii] AID - 10.1136/rmdopen-2017-000607 [doi] PST - epublish SO - RMD Open. 2018 Mar 14;4(1):e000607. doi: 10.1136/rmdopen-2017-000607. eCollection 2018.