Reduction of joint damage in severe rheumatoid arthritis by high‐dose chemotherapy and autologous stem cell transplantation

Abstract

To examine the influence of high-dose chemotherapy (HDC) and autologous stem cell transplantation (ASCT) on joint damage in patients with rheumatoid arthritis. Eight patients with active, refractory, progressively erosive RA were treated. The conditioning regimen consisted of intravenous administration of high doses of cyclophosphamide (totaling 200 mg/kg), with subsequent reinfusion of the positively selected graft. Radiographs of hands and feet were obtained before, and at 1 and 2 years after transplantation. All radiographs of hands and feet obtained up to 6 years before transplantation were also collected to compare radiographic progression before and after HDC + ASCT. Scoring of all radiographs was performed according to the Larsen scale by a trained investigator who was blinded with regard to the clinical data. Radiographic assessment by the Larsen scale showed a decreased progression of joint damage. Before transplantation, the mean Larsen score increased at a rate of 8.9 points per year. During the 2 years after transplantation, the mean rate of progression in the Larsen score decreased to 2.7 points per year (P = 0.023 by paired t-test). The results of the present analysis demonstrate major beneficial effects of HDC + ASCT on the rate of joint destruction during the first 2 years of followup after treatment.