Clinical Trial: Melphalan and Dexamethasone With or Without Bortezomib in Treating Patients With Previously Untreated Systemic Light-Chain Amyloidosis

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: A Randomized Phase III Trial of Melphalan and Dexamethasone (MDex) Versus Bortezomib, Melphalan and Dexamethasone (BMDex) for Untreated Patients With Systemic Light-Chain (AL) Amyloidosis Ineligible f

Brief Summary: This randomized phase III trial is studying melphalan and dexamethasone to see how well they work with or without bortezomib in treating patients with previously untreated systemic amyloidosis. Drugs used in chemotherapy, such as melphalan and dexamethasone, work in different ways to stop the growth of plasma cells, either by killing the cells or by stopping them from dividing. Bortezomib may stop the growth of plasma cells by blocking some of the enzymes needed for cell growth. It is not yet known whether giving melphalan together with dexamethasone is more effective with or without bortezomib in treating systemic amyloidosis.

Detailed Summary:

PRIMARY OBJECTIVES:

I. To compare hematologic overall response (partial response [PR], very good PR, amyloid complete hematologic response [ACR], and stringent complete response [sCR]) after 3 courses of therapy in patients with previously untreated systemic light-chain amyloidosis treated with melphalan and dexamethasone with vs without bortezomib.

SECONDARY OBJECTIVES:

I. To evaluate the ACR rate after 3 courses of therapy and at completion of therapy.

II. To evaluate organ response rates after 3 courses of therapy and at 6, 9, and 12 months.

III. To evaluate treatment-related mortality.

IV. To evaluate toxicity.

V. To evaluate progression-free and overall survival.

VI. To evaluate PR or better at completion of therapy.

VII. To evaluate time to hematologic and organ response.

VIII. To evaluate the duration of hematologic and organ response.

IX. To assess quality of life (QOL) at baseline, at 3, 6, and 9 months during the therapy, at completion of therapy, and 3 and 6 months after therapy.

TERTIARY OBJECTIVES:

I. To determine the prognostic impact of t(11;14) translocation and cyclin D1 overexpression on response and overall survival.

II. (Correlative) To compare sCR rates and to determine the impact of sCR on the outcomes.

Sponsor: National Cancer Institute (NCI)

Current Primary Outcome: Proportion of Patients With Hematologic Overall Response (Partial Response [PR]+ Very Good PR [VGPR]+ Amyloid Complete Response [ACR]+ Stringent Complete Response [sCR]) After 3 Months (3 Cycles) of Therapy [ Time Frame: Assessed at 3 months ]

sCR: ACR and no clonal cells in bone marrow (BM) ACR: Negative serum/urine immunofixation (IF), <5% plasma cells in BM, and normal serum FLC ratio VGPR: 1. PR and any of the following; 2. serum/urine M-protein detectable by IF but not measurable (NM) on electrophoresis (EP); (3) ≥90% reduction in serum M-component and urine M-protein <100 mg/24 hr if baseline serum measurable; (4) urine M-component <100 mg/24 hr and NM serum M-protein on serum protein EP if baseline urine measurable; (5) ≥90% drop in the difference between involved and uninvolved FLC levels if only FLC measurable PR: (1) ≥50% drop of serum M-protein and 24-hr urinary M-protein drop by ≥90% or to <200 mg/24 hr if baseline serum/urine measurable; or (2) ≥50% drop of serum M-protein if only serum measurable at baseline; or (3) 24-hr urinary M-protein drop by ≥90% or to <200 mg/24 hr if baseline urine measurable; or (4) ≥ 50% drop in the difference between involved and uninvolved FLC if only FLC measu


Original Primary Outcome: Hematologic overall response after 3 courses of therapy

Current Secondary Outcome:

Original Secondary Outcome:

  • Amyloid complete hematologic response rate after 3 courses of therapy and at completion of therapy
  • Organ response rate after 3 courses of therapy and at 6, 9, and 12 months
  • Treatment-related mortality
  • Toxicity
  • Progression-free and overall survival
  • Partial response or better at completion of the therapy
  • Time to hematologic and organ response


Information By: National Cancer Institute (NCI)

Dates:
Date Received: February 27, 2010
Date Started: November 2010
Date Completion:
Last Updated: November 20, 2014
Last Verified: April 2014