Safety and efficacy associated with long-term low-dose glucocorticoids in rheumatoid arthritis: a systematic review and meta-analysis

Objectives The aim of this study was to assess the safety and efficacy of long-term low-dose glucocorticoids (GCs) in RA. Methods A protocolised systematic review and meta-analysis (PROSPERO No. CRD42021252528) of double-blind, placebo-controlled randomised trials (RCTs) comparing a low dose of GCs (<= 7.5mg/day prednisone) to placebo over at least 2 years was performed. The primary outcome investigated was adverse events (AEs). We performed random-effects meta-analyses and used the Cochrane RoB tool and GRADE to assess risk of bias and quality of evidence (QoE). Results Six trials with 1078 participants were included. There was no evidence of an increased risk of AEs (incidence rate ratio 1.08; 95% CI 0.86, 1.34; P = 0.52); however, the QoE was low. The risks of death, serious AEs, withdrawals due to AEs, and AEs of special interest did not differ from placebo (very low to moderate QoE). Infections occurred more frequently with GCs (risk ratio 1.4; 1.19-1.65; moderate QoE). Concerning benefit, we found moderate to high quality evidence of improvement in disease activity (DAS28: -0.23; -0.43 to -0.03), function (HAQ -0.09; -0.18 to 0.00), and Larsen scores (-4.61; -7.52 to -1.69). In other efficacy outcomes, including Sharp van der Heijde scores, there was no evidence of benefits with GCs. Conclusion There is very low to moderate QoE for no harm with long-term low dose GCs in RA, except for an increased risk of infections in GC users. The benefit-risk ratio might be reasonable forusing low-dose long-term GCs considering the moderate to high quality evidence for disease-modifying properties.

Automated summary

The study aimed to assess the safety and efficacy of long-term low-dose glucocorticoids in Rheumatoid Arthritis (RA). The analysis found that low-dose glucocorticoids did not increase the risk of adverse events, except for a higher risk of infections. It also showed moderate to high evidence of improvement in disease activity and function in RA.