Biomarkers of Anti-TNF-α Therapy Efficacy in Rheumatoid Arthritis to Define Unresponsive Patients

The primary objective of this study was to validate the ability of an 8-gene biomarker set to differentiate between participants who met or did not meet European League Against Rheumatism (EULAR) Disease Activity Score (DAS)-28 Good Response criteria after treatment with anti-Tumor Necrosis Factor (TNF) therapy for 14 weeks in approximately 200 anti-TNF-naïve participants. The secondary objectives of this study was (i) to compare the behavior of the 8-gene marker set in participants who were anti-TNF naïve versus those who began their second anti-TNF treatment , (ii) to develop, maintain, and utilize a biorepository of serum, plasma, RNA, and deoxyribonucleic acid (DNA) samples for additional experiments and analyses and (iii) to discover novel genetic (DNA) predictors of response to anti-TNF therapy.