Yttrium Y 90 Ibritumomab Tiuxetan, Etoposide, Cyclophosphamide, and an AHSCT in Non-Hodgkin's Lymphoma Patients

Lymphoma Clinical Trial

Official title: A Phase I/II Trial of Escalating Dose of Yttrium-90-labeled Anti-CD20 Monoclonal Antibody in Combination With High-Dose Etoposide and Cyclophosphamide Followed by AHSCT for Patients With Relapsed B-Cell Non-Hodgkin's Lymphoma

Status Completed

Clinical Trial Summary

RATIONALE: Radiolabeled monoclonal antibodies, such as yttrium Y 90 ibritumomab tiuxetan, can find cancer cells and carry tumor-killing substances to them without harming normal cells. Drugs used in chemotherapy, such as etoposide and cyclophosphamide, work in different ways to kill cancer cells or stop them from growing. Giving radiolabeled monoclonal antibodies together with etoposide and cyclophosphamide before a peripheral blood stem cell transplant may be an effective treatment for non-Hodgkin lymphoma.

PURPOSE: This phase I/II trial is studying the side effects and best dose of yttrium Y 90 ibritumomab tiuxetan when given together with etoposide and cyclophosphamide followed by an autologous stem cell transplant and to see how well it works in treating patients with non-Hodgkin lymphoma.

Clinical Trial Description

OBJECTIVES:

• To evaluate the safety and efficacy of a new preparative regimen of yttrium Y 90 ibritumomab tiuxetan in combination with high-dose etoposide and cyclophosphamide followed by autologous stem cell transplantation (ASCT) for treatment of patients with poor-risk, relapsed, or refractory non-Hodgkin lymphoma (NHL).

• To determine the maximum tolerated dose of yttrium Y 90 ibritumomab tiuxetan which can be given with high-dose etoposide and high-dose cyclophosphamide followed by ASCT in patients with NHL.

• To perform dosimetry study to estimate the radiation dose delivered to the tumor and normal organs.

• To evaluate the short-term and long-term complications of this new preparative regimen.

OUTLINE: This is a phase I does-escalation study of yttrium Y 90 ibritumomab tiuxetan followed by an open-label phase II study.

• Preparation for transplantation: Peripheral blood stem cells (PBSCs) are collected via leukapheresis. Samples are analyzed by cytogenetic studies, immunophenotyping, and gene rearrangement. Patients with an adequate number of collected CD34-positive cells (≥ 3 times 10^6 /kg) proceed to radioimmunotherapy.

• Radioimmunotherapy: Patients receive yttrium Y 90 ibritumomab tiuxetan IV on days -21 and -14. Patients undergo bone marrow biopsy and dose estimation on day -7.

• Chemotherapy: Patients receive etoposide IV on day -4 and cyclophosphamide IV over 2 hours on day -2.

• Transplantation: Patients undergo reinfusion of PBSCs on day 1.

• Growth factor therapy: Patients receive filgrastim (G-CSF) IV beginning on day 1 and continuing until blood counts recover.

Treatment continues in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed periodically. ;

Related Conditions & MeSH terms

• Lymphoma
• Lymphoma, Non-Hodgkin

• NCT number: NCT00562978
• Study type: Interventional
• Source: City of Hope Medical Center
• Status: Completed
• Phase: Phase 1/Phase 2
• Start date: May 16, 2000
• Completion date: May 21, 2018