Background:JAK inhibitors are the newest therapeutic class available in Romania for the treatment of rheumatoid arthritis (RA). Both available JAK inhibitors (baricitinib and tofacitinib) are fully reimbursed.Objectives:Efficacy and safety data for JAK inhibitors, derived from the Romanian Registry of Rheumatic Diseases (RRBR).Methods:cohort retrospective study, the data being gathered from RRBR, which includes all the patients treated with biologics and targeted synthetic DMARDs in the country. Inclusion criteria: at least one treatment course of JAK inhibitors, until end of 2019. The collected data: demographic and disease characteristics, efficacy parameters (DAS28) and safety data (exposure to JAK inhibitors in person-years (PY) and reported adverse events (AE).Results:the RA cohort treated with JAK inhibitors included 416 patients (7.6% of all RA patients registered in RRBR) exposed to baricitinib (306 pts) or tofacitinib (110 pts) for 66255 PY. The mean age was 57.91 years, 365 (88%) women, 41 (10%) smokers, mean RA duration 11.32 years, 316 (76%) RF positive, 254 (61%) ACPA positive, 356 (85.5%) patients associate a synthetic DMARD, 76 (18%) use steroids (66% 0.05). Steroid use, the presence of RF or disease duration have no influence on the efficacy DAS28. On contrary, the ACPA positivity subgroup has a significantly lower DAS28 score, compared to ACPA negativity (3.18 vs 3.82, pConclusion:JAK inhibitors represent a safe and efficacious treatment option for patients with active RA.Disclosure of Interests:Catalin Codreanu Consultant of: Speaker and consulting fees from AbbVie, Accord Healthcare, Alfasigma, Egis, Eli Lilly, Ewopharma, Genesis, Mylan, Novartis, Pfizer, Roche, Sandoz, UCB, Speakers bureau: Speaker and consulting fees from AbbVie, Accord Healthcare, Alfasigma, Egis, Eli Lilly, Ewopharma, Genesis, Mylan, Novartis, Pfizer, Roche, Sandoz, UCB, Corina Mogosan Consultant of: Speaker and consulting fees from AbbVie, Novartis, Pfizer, Roche, Sandoz, Speakers bureau: Speaker and consulting fees from AbbVie, Novartis, Pfizer, Roche, Sandoz, Denisa Predeteanu Consultant of: Speaker fee for: Pfizer, Abbvie, Roche, MSD, Speakers bureau: Speaker fee for: Pfizer, Abbvie, Roche, MSD, Simona Rednic: None declared, Magda Parvu Consultant of: Speaker fee and consultant: Pfizer, Novartis, Roche, Abbvie, UCB, Eli-Lilly, Speakers bureau: Speaker fee and consultant: Pfizer, Novartis, Roche, Abbvie, UCB, Eli-Lilly, Elena Rezus: None declared, Ruxandra Ionescu Consultant of: Consulting fees from Abbvie, Eli-Lilly, Novartis, Pfizer, Roche, Sandoz, Speakers bureau: Consulting and speaker fees from Abbvie, Eli-Lilly, Novartis, Pfizer, Roche, Sandoz