TNF and rheumatoid arthritis: Furthermore, compared with current clinically used anti-TNF-α antibodies, QiangKe (a recombinant Human TNF Receptor-Ig Fusion Protein), our recombinant anti-TNF-α fusion protein, FVH1-1 displayed the similar therapeutic effects on the treatment of rheumatoid arthritis in the rat model, and even showed stronger improvement at the same dose.