Abstract: To evaluate the prognosis of rheumatoid arthritis based on the evaluation of the disease severity of the patient to select a treatment method suitable for each rheumatoid arthritis patients, and to measure HSC71 protein levels of the patients before and after the administrations of therapeutic agents to determine the efficacy of various therapeutic agents for each of rheumatoid arthritis patients and to use thereof as a remedy for preventing onset and progression of rheumatoid arthritis.

Abstract: It is intended to evaluate the prognosis of rheumatoid arthritis based on the evaluation of the disease severity of the patient to select a treatment method suitable for each rheumatoid arthritis patients, and to measure HSC71 protein levels of the patients before and after the administrations of therapeutic agents to determine the efficacy of various therapeutic agents for each of rheumatoid arthritis patients, and to use thereof as a remedy for preventing onset and progression of rheumatoid arthritis. It has been revealed that whether HSC71 (heat shock cognate protein 71), which is a member of the heat shock protein 70 family, shows any difference in expression between rheumatoid arthritis patients and healthy subjects. In the case where the HSC71 protein is accelerated in a rheumatoid arthritis patient the HSC71 concentrations in the serum, synovial fluid, serebrospinal fluid, urine, saliva and sputum of the patient are measured to thereby examine the disease severity of rheumatoid arthritis.