EVALUATION OF THE SURVIVAL AND SAFETY OF BIOLOGIC AND TARGETED SYNTHETIC DMARD IN PATIENTS WITH DIFFICULT-TO-TREAT RA USING DATA FROM THE BIOBADASER 3.0 REGISTRY
Biologic and targeted synthetic disease-modifying drugs (b/tsDMARDs) have changed the way rheumatoid arthritis (RA) is managed in recent years.
Still, some patients remain symptomatic despite changes in treatment, which has led to the term “difficult-to-treat RA” (D2T AR), a definition proposed by the European Alliance of Associations for Rheumatology (EULAR) in 2020 .
To date, few studies have been published evaluating the drug survival and effectiveness of b/tsDMARDs in patients with D2T RA (2–4).
Objectives: To compare safety and retention rate of b/tsDMARDs in those patients with a diagnosis of D2T RA included in the BIOBADASER 3.0 registry.
D2T RAと診断された患者を対象に、b/tsDMARDsの安全性と投与継続率を比較すること
Methods:
The EULAR definition of D2T AR was adapted according to the information available in the registry: patients who have received at least 2 b/tsDMARD with different mechanisms of action, that were discontinued due to ineffectiveness.
The retention rate was analyzed using Kaplan-Meier curves considering the moment in which the patient meets D2T AR criteria as baseline.
Regarding safety assessment, the incidence rate of adverse events was estimated.方法
A total of 279 patients with a diagnosis of RA who met the adapted definition of D2T RA were included.
Among the incorporated patients: 67, 66, 22, 89 and 35 were classified in the TNF inhibitor (TNFi), interleukin-6 receptor inhibitor (IL-6Ri), anti-CD20 monoclonal antibody (anti-CD20), Janus-kinase inhibitor (JAKi) and cytotoxic T-lymphocyte–associated antigen-4 immunoglobulin (CTLA4-Ig) group, respectively.
Concomitant treatment with conventional DMARDs (cDMARDs) was more common in the anti-CD20 group; with methotrexate (MTX) being the most frequently used.
Regarding drug retention, no statistically significant differences were detected except for the CTLA4-Ig group, which presented lower persistence (Figure 1).
The most frequent AEs were infections (n: 98; 31.4%)
Patients in the CTLA4-Ig group showed the highest risk of Aes and serious Aes
Fatal AEs occurred in the IL-6Ri (n: 3) and JAKi (n: 1) group.
結果 2
安全性に関しては、312件のAE(Adverse Event)が記録された
61件の重篤なAE
4件の致死的AE
最も頻度の高かったAEは感染症(n:98;31.4%)
CTLA4-Ig群ではのリスクが最も高かった。
IL-6Ri群(n: 3)とJAKi群(n: 1)では致死的AEが発生した。
Conclusion
CTLA4-Ig presented lower drug retention rate and a higher AEs rate compared to the rest of the drugs in this D2T RA population, which could help guide therapeutic options in these patients.
Further research is required in this regard to develop better recommendations.