The Intersection of COVID-19 and Rheumatoid Arthritis: Shared Mechanisms, Treatment Challenges, and Potential Therapeutic Approaches

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is spreading rapidly across the world, posing a major health concern with the coronavirus disease 2019 (COVID-19). Patients with rheumatoid arthritis (RA) may be at higher risk of infection and disease progression due to impaired autoimmune systems, immunosuppressants, and comorbidities. Therefore, we review the possible immune mechanisms and pathological interactions between COVID-19 and RA, as the uncontrolled immune activation and cytokine response in COVID-19 resemble the immune inflammation of RA. We also discuss the potential mechanisms that may lead to cardiovascular complications as well as the challenges of treating RA patients with COVID-19. While several therapeutic agents are being developed to cure COVID-19, antirheumatic drugs could also be potential options due to the similar proinflammatory cytokines induced in both diseases. Additionally, we discuss the safety and effectiveness of SARS-CoV-2 vaccines and novel therapeutic approaches against RA based on the shared mechanisms between COVID-19 and RA.