Impact of Adalimumab Withdrawal or Continuation on Severity of COVID-19 and Risk of IMID Relapse

"Adalimumab is a fully human, high-affinity, recombinant anti-tumor necrosis factor (TNF) alpha monoclonal antibody used to treat rheumatoid arthritis, ankylosing spondylitis, psoriasis, psoriatic arthritis, Crohn disease, ulcerative colitis, etc.~Adalimumab is a fully human, high-affinity, recombinant immunoglobulin G (IgG) anti-TNF alpha monoclonal antibody. It is a molecule comprising 1330 amino acids and has a molecular weight of approximately 148 kDa.\[4\] It inhibits the binding of TNF alpha (both soluble and membrane-bound) to its receptor. Specifically, it inhibits TNF alpha's interaction with p55 (TNFR1) and p75 (TNFR2) cell surface TNF receptors, which in turn interferes with cytokine-driven inflammatory processes. It is identical in structure and function to the naturally occurring human IgG1 and thus has high selectivity for TNF alpha and has low immunogenic potential."