Clinical Trial: The Efficacy and Safety of Alemtuzumab in Auotoimmune Cytopenias

Study Status: Terminated
Recruit Status: Terminated
Study Type: Interventional

Official Title: A Phase II Study of Alemtuzumab in Autoimmune Cytopenias

Brief Summary: The majority of cases of autoimmune cytopenias, which includes immune thrombocytopenia (ITP), autoimmune hemolytic anemia, autoimmune neutropenia (AIN) and pure red cell aplasia, will respond to conventional immunosuppressive therapy with or without splenectomy. There is, however, a group of patients with refractory or chronically relapsing autoimmune cytopenias causing life-threatening hemorrhages, infections or anemia. Further problems include the short- and long-term side-effects of corticosteroids, and the potential toxicity of immunosuppressive and cytotoxic agents. An alternative and less toxic approach in these patients may be the treatment with Campath-1H, a humanized IgG monoclonal antibody specific for the CD52 antigen and present on human lymphocytes and monocytes. The main effect of Campath-1H is on T cell and it results in a prolonged and profound depletion of the CD4 and CD8 subpopulations, particularly the CD4 population, and this might "reset" the immune system without the need for total immune ablation.Therefore, this study is designed to investigate safety and efficacy of repeated Campath treatment cycles in autoimmune cytopenia.In order to minimize possible side effects of accumulating Campath, the 3 treatment cycles will be administered in consecutively reduced doses.

Detailed Summary:
Sponsor: Phramongkutklao College of Medicine and Hospital

Current Primary Outcome: To investigate the efficacy of alemtuzumab in terms of objective response rate (ORR: complete remission [CR], partial remission [PR]), progression free survival (PFS), and relapse rate in patients with autoimmune cytopenias

Original Primary Outcome: Same as current

Current Secondary Outcome: To determine the safety profiles of alemtuzumab in patients with autoimmune cytopenias.

Original Secondary Outcome: Same as current

Information By: Phramongkutklao College of Medicine and Hospital

Dates:
Date Received: April 25, 2007
Date Started: March 2007
Date Completion:
Last Updated: June 18, 2009
Last Verified: June 2009