| Exclusion Criteria: | 1) Fungal infection with no radiographic evidence of improvement during continued antifungal therapy at the time of enrollment
2) CMV pneumonia without major radiographic improvement or CMV infection with no reduction of antigenemia or viral load during continued antiviral therapy at the time of enrollment
3) Active disseminated VZV infection at the time of enrollment. Patients may be enrolled after all lesions have crusted
4) Inability to tolerate oral administration of medications at the time of enrollment
5) Lactose intolerant children who are too young to swallow capsules.
6) Known hypersensitivity or allergy to MMF
7) Melena or frank blood per rectum at the time of enrollment
8) Gastrointestinal ulceration known to be present at the time of enrollment
9) Absolute neutrophil count (ANC) < 1500/microliter at the time of enrollment
10) Any systemic immunosuppressive treatment other than glucocorticoids, cyclosporine or tacrolimus at the time of enrollment. Patients who received MMF for prevention or treatment of acute GVHD may be enrolled if administration of MMF was discontinued at least 2 weeks before the diagnosis of chronic GVHD was made.
11) Treatment with prednisone (or equivalent ) at doses higher than 1.0 mg/kg/day at the time of enrollment
12) Any prior treatment for chronic GVHD
13) Bronchiolitis obliterans known to be present as manifestation of chronic GVHD at the time of enrollment, since this would preclude taper of glucocorticoid treatment
14) Persistent or recurrent malignancy at the time of enrollment, including histopathologic evidence of myeloma or lymphoma. Patients with bcr/abl detected by PCR assay as the only evidence of persistent chronic myeloid leukemia may be enrolled.
15) Pregnancy or breast feeding at the time of enrollment
16) Hospitalization at the time of enrollment. Treatment with prednisone as described below in Sections 9 and 11 may begin during hospitalization, but randomization must be deferred until after the patient has been discharged form the hospital. |