Clinical and functional remission: even though biologics are superior to conventional DMARDs overall success rates remain low – results from RABBIT, the German biologics register

We investigated the frequency of remission according to the disease activity score (DAS28) definition, modified American Rheumatology Association (ARA) criteria, and the frequency of an achievement of a functional status above defined thresholds ('functional remission', 'physical independence') in rheumatoid arthritis (RA) patients treated with either biologics or conventional DMARDs. We used the data of a prospective cohort study, the German biologics register RABBIT (German acronym for Rheumatoid Arthritis – Observation of Biologic Therapy) to investigate the outcomes in RA patients with two or more DMARD failures who received new treatment with biologics (BIOL; n = 818) or a conventional DMARD (n = 265). Logistic regression analysis was applied to adjust for differences in baseline risks. Taking risk indicators such as previous DMARD failures or baseline clinical status into account, we found that biologics doubled the chance of remission compared to conventional DMARD therapies (DAS28 remission, adjusted odds ratio (OR) 1.95 (95% confidenece interval (CI) 1.2–3.2)); ARA remission, OR 2.05 (95% CI 1.2–3.5)). High remission rates (DAS28 remission, 30.6%; ARA remission, 16.9%) were observed in BIOL patients with a moderate disease activity (DAS28, 3.2 to 5.1) at the start of treatment. These rates decreased to 8.5% in patients with DAS28 > 6. Sustained remission at 6 and 12 months was achieved in <10% of the patients. Severely disabled patients (≤50% of full function) receiving biologic therapies were significantly more likely to achieve a status indicating physical independence (≥67% of full function) than controls (OR 3.88 (95% CI 1.7–8.8)). 'Functional remission' (≥83% of full function) was more often achieved in BIOL than in controls (OR 2.18 (95% CI 1.04–4.6)). In conclusion, our study shows that biologics increase the chance to achieve clinical remission and a status of functional remission or at least physical independence. However, temporary or even sustained remission remain ambitious aims, which are achieved in a minority of patients only

Etanercept is Effective and Halts Radiographic Progression in Rheumatoid Arthritis and Psoriatic Arthritis: Final Results from a German Non-interventional Study (PRERA)

Abstract Introduction Etanercept (ETN) has been shown to slow radiographic progression of rheumatoid arthritis (RA) and psoriatic arthritis (PsA) in clinical trials. This real-world, non-interventional study assessed radiographic progression in patients with RA or PsA treated with ETN for ≤ 36 months in outpatient care in Germany (NCT01623752). Methods Patients with RA or PsA attended ≤ 10 visits across two study phases (phase 1: seven visits, baseline to month 18; phase 2: three visits until month 36). Radiographs were taken at baseline (Rx1), months 12–18 (Rx2), and/or months 30–36 (Rx3). Historic radiographs (Rx0) taken 12–48 months pre-baseline were also evaluated (if available). The primary endpoint was the change in modified total Sharp score (mTSS). The erosion score (ES) and joint space narrowing score (JSN) were also evaluated. Results Overall, 1821 patients were enrolled (RA: n = 1378; PsA: n = 440). In patients with Rx1 and Rx2 (RA: n = 511; PsA: n = 167), the mean mTSS remained stable for both disease groups, and the annualized median change in mTSS was 0. In patients with Rx0, Rx1, and Rx2 (RA: n = 180; PsA: n = 47), annualized radiographic progression in mTSS, ES, and JSN was larger in the pre-ETN treatment phase than during ETN treatment in both disease groups. The percentage of patients with radiographic non-progression was higher during ETN treatment versus pre-ETN. Improvement in clinical disease activity and patient-reported outcomes was also observed. Conclusions This was the first real-world, non-interventional study to report systematically collected radiographic data in a large cohort of patients with RA or PsA under treatment with a biologic. In patients with available radiographic data, mean radiographic progression was lower and the proportion of patients without progression was greater during ETN treatment than in the pre-ETN period

Effectiveness of Etanercept in Rheumatoid Arthritis: Real-World Data from the German Non-interventional Study ADEQUATE with Focus on Treat-to-Target and Patient-Reported Outcomes

Abstract Background For rheumatoid arthritis (RA), the treat-to-target concept suggests attaining remission or at least low disease activity (LDA) after 12 weeks. Objectives This German, prospective, multicenter, non-interventional study aimed to determine the proportion of patients with RA who achieved their treat-to-target aim after 12 and 24 weeks of etanercept (ETN) treatment in a real-life setting, as opposed to patients achieving their therapeutic target at a later timepoint (week 36 or 52). Methods A total of 824 adults with a confirmed diagnosis of RA without prior ETN treatment were included. Remission and LDA were defined as DAS28 < 2.6 and DAS28 ≤ 3.2, respectively. Results The proportion of patients achieving remission was 24% at week 12 and 31% at week 24. The proportion of patients achieving LDA was 39% at week 12 and 45% at week 24. The proportion of patients achieving remission or LDA further increased beyond week 24 up to week 52. Improvement in pain and reduction in concomitant glucocorticoid treatment were observed. Improvements in patient-reported outcomes were also seen in patients who did not reach remission or LDA. No new safety signals were detected. Conclusions A considerable proportion of patients with RA attained the target of remission or LDA after 12 weeks of ETN treatment. Even beyond that timepoint, the proportion of patients achieving treatment targets continued to increase up to week 52. Trial Registration ClinicalTrials.gov Identifier: NCT02486302