At a glance
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Phase II Trial of Targeted Immune-Depleting Chemotherapy and Reduced-Intensity Allogeneic Hematopoietic Stem Cell Transplantation Using 8/8 and 7/8 HLA-matched Unrelated Donors and Utilizing Two Graft-versus-Host Disease Prophylaxis Regimens for the Treatment of Leukemias, Lymphomas, and Pre-malignant Blood Disorders
In Brief
A Phase 2 clinical trial evaluating Rituximab, Cyclosporine, and 6 other interventions for Myelodysplastic Syndrome and 4 related conditions. Completed, enrolled 92 participants across 1 site.
Detailed Summary
Background: Major problems with stem cell transplantation (SCT) for cancer treatment are a lack of suitable donors for patients without a human leukocyte-antigen (HLA) tissue-matched sibling and graft-versus-host disease (GVHD), a serious side effects of immune-suppressing chemotherapy that is given to bring the cancer under control before SCT. In GVHD, the patients immune system attacks the transplanted donor cells. This study will try to improve the results of SCT from unrelated HLA-matched donors using targeted immune-depleting chemotherapy to bring the cancer under control before transplantation and to lower the chance of graft rejection, followed by reduced-intensity transplant chemotherapy to make the procedure less toxic. Objectives: To evaluate the safety and effectiveness of targeted immune-depleting chemotherapy followed by reduced-intensity transplant chemotherapy in patients with advanced cancers of the blood and immune system. To evaluate the safety and effectiveness of two different drug combinations to prevent GVHD. Both regimens have been successful in preventing GVHD, but they work by different mechanisms and affect the rebuilding of the immune system after the transplant. Eligibility: People 18 to 74 years of age with advanced or high-risk cancers of the blood and immune system who do not have a suitable HLA-matched sibling. Design: All patients receive chemotherapy before transplant to treat the cancer and suppress immune function. All patients receive a conditioning regimen of cyclophosphamide for 4 days and fludarabine for 4 days before SCT to prepare for the transplant. Patients are randomly assigned to one of two combination drug treatments to prevent GHVD as follows: * Group 1: Tacrolimus starting 3 days before SCT and continuing for 6 months, plus methotrexate on days 1, 3, 6, and 11 post-SCT, plus sirolimus starting 3 days before the SCT and continues for 6 months following SCT. * Group 2: Alemtuzumab for 4 days starting 8 days before SCT, plus cyclosporine starting 1 day before SCT and continuing for 6 months. Patients receive the donors stem cells and immune cells 2 days after completing the conditioning regimen. Patients are followed at the clinic regularly for the first 6 months after SCT, and then less often for at least 5 years. Some visits may include bone marrow aspirates and biopsies, blood draws, and other tests to monitor disease status. A skin biopsy, oral mucosa biopsy, and saliva collection are done to study chronic GVHD. ...
Study Details
Timeline
Interventions
Rituximab: 375 mg/m(2) intravenous (IV), day 1 for patients with cluster of differentiation 20 (CD20)-positive disease.
Cyclosporine: IV over 2 hours or orally every 12 hours on days -1 to 100, followed by a taper if graft versus host disease (GVHD) does not develop.
Allogenic stem cell transplant
Fludarabine:30 mg/m(2) per day IV infusion over 30 minutes, daily. On days -6, -5, -4, and -3. Cyclophosphamide:1200 mg/m(2) per day IV infusion over 2 hours on Days 6, -5, -4, -3 Mesna: 1200 mg/m(2) per day IV infusion, Daily on days 6, -5,-4, and -3
Tacrolimus: starting day -3 before transplant, given initially at 0.02 mg/kg/day CIV. Continue IV and then switch to an equivalent oral dose (when patient taking po) titrated for a goal level of 5 to 10 ng/ml; Sirolimus: given as an initial loading dose of 12 mg p.o. on day -3 pre-transplant, 4 mg starting day -2 pre-transplant and titrated for levels 3-12 ng/ml; Methotrexate 5 mg/m2 IV on days +1, +3, +6, and +11 post-transplant. Tacrolimus and sirolimus will be tapered at day +63, day +119 and day +180 post-transplant as tolerated.
Fludarabine:25 mg/m(2) per day IV over 30 minutes, Daily on days 1-5 Cytarabine: 2,000 mg/m(2) IV over 4 hours,on Days 1, 2, 3, 4, 5 Filgrastim: 5 mcg/kg per day subcutaneous (SC) beginning 24 hours PRIOR to initiation of chemotherapy
Fludarabine:25 mg/m(2) per day IV infusion over 30 minutes, daily on days 1-4 Etoposide :50 mg/m(2) per day continuous IV infusion over 24 hours on days 1-4 Doxorubicin:10 mg/m(2)/day CIV, days 1-4 Vincristine:0.4 mg/m(2) per day continuous IV infusion over 24 hours daily on days 1-4 Cyclophosphamide:750 mg/m(2) IV infusion over 30 minutes on day 5
Alemtuzumab:20 mg/day IV over 8 h on days 8 to 4 pre-transplant.