NCT00972660

Safety and Efficacy Study of Allogenic Mesenchymal Stem Cells to Treat Extensive Chronic Graft Versus Host Disease

A Phase II, Randomized Study to Evaluate the Safety and Efficacy of Ex-Vivo Cultured Allogenic Mesenchymal Stem Cells For the Treatment of Extensive Chronic Graft Versus Host Disease

• Status: Unknown
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 52 (estimated)
• Sponsor: Guangdong Provincial People's Hospital · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

Study Design: Treatment, Randomized, Open Label, Parallel Assignment,Safety/Efficacy Study. The purpose of this study is to evaluate the safety and efficacy of mesenchymal stem cells (MSC) expanded ex-vivo infusion for the treatment of patients who have developed a newly diagnosed extensive or refractory chronic graft versus host disease (chronic GVHD) to the usual therapeutic measures.

Detailed description

Chronic graft-versus-host disease (GVHD) is one of the main limitations to successful allogeneic hematopoietic stem cell transplantation (HSCT), and has a substantial impact not only on survival but also on the quality of life of otherwise cancer-free patients. Half of the patients undergoing a HLA-identical allografts who survive beyond 100 days may require long-term immunosuppressive treatment for extensive chronic GVHD, often for more than 2 years. More than one-third of patients with chronic GVHD do not respond to first-line therapy, which often involves combinations of corticosteroids and a calcineurin inhibitor. There is no standard second-line or salvage therapy for these patients and they have a poor outcome. Mesenchymal stem cells (MSCs) are multipotent non-hematopoietic stem cells that can differentiate into various lineages and have been used to repair injured tissues. Recently, MSCs have also shown unique immunomodulatory properties ex-vivo, including inhibition of T-cell proliferation after stimulation by allo-antigens and mitogens, and prevention of the activity of cytotoxic T cells.MSCs have been used for the prophylaxis of acute GVHD and for the treatment of patients with steroid-refractory acute GVHD,but rarely have been used for extensive chronic GVHD. Development of new therapeutic agents and strategies to rescue patients with extensive chronic GVHD would provide a significant benefit in an area of unmet medical need. In this study, a single center randomized, non blinded Phase II clinical trial is proposed to study the safety and efficacy of mesenchymal stem cells (MSC) in the management of extensive chronic GVHD newly or refractory to the usual therapeutic measures. Expanded MSC will be infused at a dose of 2 million cells/kg twice a week for 2 weeks and weekly for the following two weeks (six doses totally)in patients based first-line therapy (steroid plus cyclosporin A ) or their primary immunosuppressive therapies.

Conditions

• Graft Versus Host Disease

Interventions

Type	Name	Description
BIOLOGICAL	Mesenchymal stem cell (MSC)	Experimental:Mesenchymal stem cell(MSC). Patients with newly diagnosed extensive cGVHD: prednisone 1mg/kg + cyclosporine or tacrolimus and MSC 2×1,000,000 MSC/kg, IV twice a week for the first two weeks and weekly for the following two weeks(6 doses totally). Refractory extensive cGVHD: receive primary treatment (prednisone + cyclosporine or tacrolimus, or plus mycophenolate mofetil, or plus methotrexate ) and MSC2×1,000,000 MSC/kg, IV twice a week for the first two weeks and weekly for the following two weeks(6 doses totally).
DRUG	Prednisone and cyclosporine or primary therapies	Patients with newly diagnosed extensive cGVHD: prednisone 1mg/kg + cyclosporine or tacrolimus Patients with refractory extensive cGVHD: primary treatment (eg.prednisone 1mg/kg + cyclosporine or tacrolimus,or plus mycophenolate mofetil, or methotrexate.)

Timeline

• Start date: 2009-09-01
• Primary completion: 2015-12-01
• Completion: 2017-12-01
• First posted: 2009-09-07
• Last updated: 2014-08-26

Locations

1 site across 1 country: China