Conditions: Multiple Myeloma
Keywords: Multiple Myeloma Zevalin
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 8
Healthy volunteers: no

Brief summary:
The study involves the use of a targeted form of radiation, in addition to standard high dose chemotherapy and stem cell transplant for multiple myeloma. The use of targeted radiation is designed to kill more multiple myeloma cells while avoiding the side effects of standard radiation. This type of targeted radiation (also known as radioimmunotherapy) has been approved by the Food and Drug Administration (FDA) for the treatment of a related disease, lymphoma under the trade name, Zevalin©. Zevalin© has been added to high dose chemotherapy and stem cell transplants for patients with lymphoma and is now being studied in this clinical trial for patients with multiple myeloma. This trial is only available at Tufts Medical Center.

The proposed clinical trial will test whether CD20-targeted radio-immunotherapy can be safe and effective when integrated into a standard regimen of myeloablative chemotherapy and autologous stem cell rescue in patients with measurable disease prior to high dose chemotherapy and autologous stem cell transplant for multiple myeloma.

Detailed description:
Patients with multiple myeloma scheduled for standard of care high dose melphalan and autologous stem cell transplant who have an incomplete response to induction treatment (i.e. with measurable disease) following peripheral blood stem cell collection are candidates for participation on this trial. 90Y Zevalin targets CD20 expressed on the surface of mature B-cells and is FDA approved for relapsed/refractory low grade lymphoma. This is a single arm, phase II safety and efficacy study of 90-Y Zevalin in multiple myeloma. Subjects will receive cold antibody (Rituximab 100mg/m2) followed by 5 mCi test dose of 111-In Zevalin on transplant day -21. Gamma camera images are obtained 48 to 72 hours after 111-In Zevalin to document appropriate / expected distribution of radiotracer. On transplant day -14, subjects will receive another cold antibody dose followed by 90Y Zevalin 0.4 mg/kg (max 32 mCi) as single dose. Subjects are admitted for transplant on day -3 and proceed with institution standard high dose melphalan (200mg/m2) on day -2. Subjects are followed for safety for 6 weeks after transplant.

Arms:
arm 1: 1.5mg of 111In Zevalin (containing 5 mCi of 111In) will be used for radioimaging on study day +1. 90Y Zevalin will be administered seven to nine days after 111In Zevalin administration. The dose of 90Y Zevalin will be 0.4 mCi/kg, capped at a maximum dose of 32 mCi.

Interventions: intervention 1: indium-111-ibritumomab tiuxetan intervention 2: 90Y Zevalin
Intervention descriptions: intervention 1: 1.5mg of 111In Zevalin (containing 5 mCi of 111In) will be used for radioimaging. 111In Zevalin will be administered by a 10 minute slow IV push injection immediately following completion of the rituximab infusion. 111In Zevalin may be injected by stopping the flow from the IV bag and injecting the radiolabeled antibody directly into the IV line. A 0.22 micron filter must be on line between the drug infusion port and the patient. The line must be flushed with at least 10cc of normal saline after 111In Zevalin has been injected. intervention 2: Each patient will receive a single therapeutic dose of 90Y Zevalin at a dose of 0.4 mCi/kg, capped at a maximum dose of 32 mCi. 90Y Zevalin will be administered intravenously as a slow IV push over 10 minutes. 90Y Zevalin may be directly infused by stopping the flow from the IV bag and injecting the radiolabeled antibody directly into the IV line. A 0.22 micron filter must be on line between the syringe and the infusion port. The line must be flushed with at least 10cc normal saline after 90Y Zevalin has been infused.

Protocol document: