RT Journal Article SR Electronic T1 Outcomes and Findings of the International Rheumatoid Arthritis (RA) BIODAM Cohort for Validation of Soluble Biomarkers in RA JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.190302 DO 10.3899/jrheum.190302 A1 Walter P. Maksymowych A1 Oliver FitzGerald A1 Mikkel Østergaard A1 Joanne Homik A1 Désirée van der Heijde A1 Robert G. Lambert A1 Ori Elkayam A1 Sofia Ramiro A1 J. Carter Thorne A1 Maggie J. Larché A1 Gianfranco Ferraccioli A1 Marina Backhaus A1 Gerd R. Burmester A1 Gilles Boire A1 Bernard Combe A1 Thierry Schaeverbeke A1 Alain Saraux A1 Maxime Dougados A1 Maurizio Rossini A1 Marcello Govoni A1 Luigi Sinigaglia A1 Alain Cantagrel A1 Cheryl Barnabe A1 Clifton O. Bingham III A1 Paul P. Tak A1 Dirkjan van Schaardenburg A1 Hilde Berner Hammer A1 Joel Paschke A1 Rana Dadashova A1 Edna Hutchings A1 Alexandre Sepriano A1 Robert Landewé YR 2019 UL http://www.jrheum.org/content/early/2020/02/10/jrheum.190302.abstract AB Objective The Outcome Measures in Rheumatology Soluble Biomarker Working Group initiated an international, multicenter, prospective study, the Rheumatoid Arthritis (RA) BIODAM cohort, to generate resources for the clinical validation of candidate biomarkers predictive of radiographic progression. This first report describes the cohort, clinical outcomes, and radiographic findings. Methods Patients with RA from 38 sites in 10 countries starting or changing conventional synthetic disease-modifying antirheumatic drugs and/or starting tumor necrosis factor inhibitors were followed for 2 years. Participating physicians were required to adhere to a treat-to-target strategy. Biosamples (serum, urine) were acquired every 3 months, radiography of hands and feet every 6 months, and ultrasound of hands and feet every 3 months in a subset. Primary endpoint was radiographic progression by the Sharp/van der Heijde score. Results A total of 571 patients were recruited and 439 (76.9%) completed 2-year followup. At baseline, the majority was female (76%), mean age 55.7 years, and mean disease duration 6.5 years. Patients had a mean of 8.4 swollen and 13.6 tender joints, 44-joint count Disease Activity Score (DAS44) 3.8, 77.7% rheumatoid factor–positive or anticitrullinated protein antibody–positive. Percentage of patients in DAS and American College of Rheumatology remission at 2 years was 52.2% and 27.1%, respectively. Percentage of patients with radiographic progression (> 0.5) at 1 and 2 years was 38.2% and 59.9%, respectively. Conclusion The RA BIODAM prospective study succeeded in generating an extensive list of clinical, imaging (2343 radiographs), and biosample (4638 sera) resources that will be made available to expedite the identification and validation of biomarkers for radiographic damage endpoints. (Clinicaltrials.gov: NCT01476956, clinicaltrials.gov/ct2/show/NCT01476956)