European journal of internal medicine 2023 Sep 04
Abatacept in usual and in non-specific interstitial pneumonia associated with rheumatoid arthritis.
Abstract
Objective
To compare the effectiveness of abatacept (ABA) in Rheumatoid Arthritis-associated Interstitial Lung Disease (RA-ILD) according to the radiological patterns of usual (UIP) or non-specific interstitial pneumonia (NSIP).
Methods
From an observational longitudinal multicentre study of 263 RA-ILD patients treated with ABA, those with UIP or NSIP were selected. Lung function, chest high resolution computerised tomography (HRCT) and dyspnoea were recorded and compared in both groups from baseline to the end of follow-up (progression definitions: improvement or worsening >10% of FVC or DLCO, changes in HRCT extension and 1-point change in the mMRC scale, respectively). Differences between final and baseline visits were calculated as the average difference (95% CI) through mixed effects models regression.
Results
We studied 190 patients with UIP (n=106) and NSIP (n=84). General features were similar in both groups except for older age, positive rheumatoid factor, and previous sulfasalazine therapy, which were more frequent in patients with UIP. ILD duration up to ABA initiation was relatively short: median 16 [4-50] and 11 [2-36] months (p=0.36) in UIP and NSIP, respectively. Mean baseline FVC and DLCO were 82% and 63% in UIP and 89% and 65% in NSIP, respectively. Both parameters remained stable during 24 months with ABA. HRCT lesions and dyspnoea improved/stabilized in 73.1% and 90.5% and 72.9% and 94.6% of UIP and NSIP patterns, respectively.
Conclusion
ABA seems equally effective in stabilizing dyspnoea, lung function and radiological impairment in both UIP and NSIP patterns of RA-ILD. Early administration of ABA may prevent RA-ILD progression, regardless of the radiological pattern.
Related Questions
How would you approach management of a patient with seropositive RA and UIP-ILD, with concern for active lung disease?
There is a potential benefit of adding additional immunosuppression for an RA patient with a UIP pattern on HRCT. My go-to-drugs are either abatacept or rituximab. While MMF is a standard first-line medication for many forms of ARD-ILD, it was tried for RA joint disease many years ago and the study ...
How do you determine whether to add abatacept or rituximab to the treatment regimen in patients with mild RA-ILD on methotrexate?
I think of many agents before rituxan for RA ILD: all in various stages of being studied MMF, Orencia/abatacept, Tocli/actemra, and even JAK inhibitors xeljanz/rinvoq. Generally, if I treat and control the joints, the lungs stabilize. 10-20% run independently from joints or extra-articular ILD witho...
How do you approach management of new onset ILD in a patient with RA who is otherwise well controlled on methotrexate or leflunomide?
We do not have any randomized controlled trials for DMARDs in RA-ILD. Most of the data is case series or retrospective analysis. Nonetheless, we can use current data to at least make clinical decisions until we receive more direction from high-quality clinical trials. We now know that in general met...