Total Marrow Irradiation & Autologous Stem Cell Transplantation for Relapsed or Refractory Myeloma

A Dose Escalation Study of Total Marrow Irradiation (TMI) and Autologous Stem Cell Transplantation (ASCT) for the Treatment of Relapsed or Refractory Multiple Myeloma (MM)

The investigators hypothesize that conformal radiation will allow the administration of higher doses of external beam radiation to marrow based malignancies than total body irradiation (TBI)without increasing the toxicity to normal tissues beyond that induced by TBI. Further,the investigators hypothesize that this will result in an improvement in disease response and disease control for patients with multiple myeloma. This is a dose escalation study of TMI with the primary objective of determining the maximum tolerated dose of TMI when followed by aHSCT in patients with relapsed or refractory multiple myeloma.

Inclusion Criteria:

• A subject must meet all of the following criteria to be eligible for the study. These will be evaluated within the four weeks prior to enrolment.
• Subject must have primary refractory or relapsed multiple myeloma.
• Subject must have a measurable serum or urine monoclonal gammopathy at the time of their latest relapse.
• Subject must meet institutional guidelines for autologous HSCT with adequate renal, cardiac, pulmonary and hepatic function.
• An autologous hematopoietic stem cell graft containing more than 2.5 x 106 CD34+ cells/kg must be cryopreserved and available for transplantation.
• Subject must be of age more than 18 and less than 60 years.
• Subject must have an ECOG performance score of 0,1, or 2.
• Subject must have the ability to comply with the protocol visit schedule and other protocol requirements.

Exclusion Criteria:

• A subject meeting any of the following criteria is not eligible for participation in the study:
• Subject with non-secretory multiple myeloma or any plasma cell disorders other that MM.
• Subjects that have not received previous therapy with adequate intense corticosteroids for multiple myeloma.
• Subjects with a severely limited life expectancy by concomitant illness, defined as a life-expectancy of less than 6 months.
• Subjects who have previously received radiation treatments or other neoplastic disorders.
• Subjects with a history of non-compliance in other studies.
• Pregnant or lactating female subjects.