S1304, Carfilzomib and Dexamethasone for Treating Patients With Relapsed or Refractory Myeloma

Recurrent Plasma Cell Myeloma Clinical Trial

Official title: A Phase II Randomized Study Comparing Two Doses of Carfilzomib (NSC-756640) With Dexamethasone for Multiple Myeloma Patients With Relapsed or Refractory Disease

Status Completed

Clinical Trial Summary

This randomized phase II trial compares how well two different doses of carfilzomib work when given with dexamethasone in treating patients with multiple myeloma that has come back after a period of improvement or has not responded to treatment. Carfilzomib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as dexamethasone, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving carfilzomib together with dexamethasone may kill more cancer cells. It is not yet known whether a higher or lower dose of carfilzomib works better when given with dexamethasone.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To evaluate and compare progression free survival (PFS) of two different doses of carfilzomib with dexamethasone in multiple myeloma (MM) patients with relapsed and/or refractory disease.

SECONDARY OBJECTIVES:

I. To evaluate and compare response rates (RR) for each arm. II. To evaluate response rates (RR) for patients that relapse on low dose carfilzomib and subsequently cross-over to high dose carfilzomib.

III. To evaluate the safety of this combination for this patient population. IV. To evaluate overall survival (OS).

TERTIARY OBJECTIVES:

I. To explore the molecular variability in MM cells obtained from extramedullary bone marrow relapse sites.

II. To explore the role of positron emission tomography (PET) scanning in assessing disease burden and as a tool to assess treatment response.

III. To explore changes in left ventricular ejection fraction (LVEF) in patients with relapsed or refractory multiple myeloma treated with low dose carfilzomib or high dose carfilzomib plus dexamethasone.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive dexamethasone intravenously (IV) and low-dose carfilzomib IV over 2-10 minutes on days 1, 2, 8, 9, 15, and 16. Patients with progression cross-over to Arm II.

ARM II: Patients receive dexamethasone IV and high-dose carfilzomib IV over 30 minutes on days 1, 2, 8, 9, 15, and 16.

Note that for the first course of treatment on both arms carfilzomib is given at a reduced rate to assess toxicity.

In both arms, treatment repeats every 28 days for up to 12 courses in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for 3 years from initial registration. ;

Related Conditions & MeSH terms

• Multiple Myeloma
• Neoplasms, Plasma Cell
• Recurrent Plasma Cell Myeloma
• Refractory Plasma Cell Myeloma

• NCT number: NCT01903811
• Study type: Interventional
• Source: Southwest Oncology Group
• Status: Completed
• Phase: Phase 2
• Start date: October 2013
• Completion date: March 7, 2019