Title
A Phase III, Randomized Study of Daratumumab, Cyclophosphamide, Bortezomib and Dexamethasone (Dara-Vcd) Induction Followed by Autologous Stem Cell Transplant or Dara-Vcd Consolidation and Daratumumab Maintenance in Patients With Newly Diagnosed AL Amyloidosis

Description
This phase III trial compares the effect of adding a stem cell transplant with melphalan after completing chemotherapy with daratumumab, cyclophosphamide, bortezomib and dexamethasone (Dara-VCD) versus chemotherapy with Dara-VCD alone for treating patients with newly diagnosed amyloid light chain (AL) amyloidosis. Melphalan is a chemotherapy given prior to a stem cell transplant. Giving chemotherapy before a peripheral blood stem cell transplant helps kill cancer cells in the body and helps make room in the patient's bone marrow for new blood-forming cells (stem cells) to grow. The stem cells are then returned to the patients to replace the blood forming cells that were destroyed by the chemotherapy. Daratumumab is in a class of medications called monoclonal antibodies. It binds to a protein called CD38, which is found on some types of immune cells and cancer cells, including myeloma cells. Daratumumab may block CD38 and help the immune system kill cancer cells. Chemotherapy drugs, such as cyclophosphamide and bortezomib, 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. Dexamethasone is in a class of medications called corticosteroids. It is used to lower the body's immune response to help stop the growth of cancer cells. Giving a stem cell transplant with melphalan after Dara-VCD may kill more cancer cells in patients with newly diagnosed AL amyloidosis.

Objective
PRIMARY OBJECTIVE:

I. To compare major organ deterioration progression-free survival between participants randomized to the autologous stem cell transplant (ASCT) and non-ASCT arms of this study.

SECONDARY OBJECTIVES:

I. To compare overall survival (OS) between participants randomized to the ASCT and non-ASCT arms of this study.

II. To compare rates of cardiac and renal organ responses between participants randomized to the ASCT and non-ASCT arms of this study.

III. To compare rates of cardiac and renal organ progression between participants randomized to the ASCT and non-ASCT arms of the study.

IV. To compare the frequency and severity of toxicities between participants randomized to the ASCT and non-ASCT arms of this study.

V. To compare minimal residual disease (MRD) negativity rates between participants randomized to the ASCT and non-ACST arms of this study.

Treatment ARM I: Patients receive daratumumab and hyaluronidase-fihj SC over 3-5 minutes on days 1 and 15 as well as bortezomib SC over 3-5 minutes, cyclophosphamide PO or IV, and dexamethasone PO or IV on days 1, 8, 15 and 22 of each cycle. Cycles repeat every 28 days for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo echocardiography at screening and at progression. Patients undergo bone marrow aspiration and biopsy within14-28 days post consolidation treatment and at progression.

ARM II: Patients undergo collection of peripheral blood stem cells. Patients receive melphalan IV for 1 cycle and then 2 days later receive the stem cell transplant IV in the absence of disease progression or unacceptable toxicity. Patients undergo echocardiography at screening and at progression. Patients undergo bone marrow aspiration and biopsy within 60-90 days post initiation of stem cell transplant.

Key Eligibility For full study eligibility, see this study's ClinicalTrials.gov record.

Applicable Disease Sites
Multiple Myeloma

Participating Institutions
UW Health Eastpark Medical Center; UW Health University Hospital