This phase II trial studies how well carfilzomib, pomalidomide, and dexamethasone work in treating patients with high-risk multiple myeloma. Carfilzomib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as pomalidomide and 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, pomalidomide, and dexamethasone may work better in treating patients with multiple myeloma.
PRIMARY OBJECTIVE: I. To determine the ≥ complete response (CR) rates with carfilzomib, pomalidomide and dexamethasone (CPd) maintenance. SECONDARY OBJECTIVES: I. To determine the improved progression free survival (PFS) with CPd maintenance among high-risk patients. II. To determine the best response rates (very good partial response rate \[VGPR\], stringent complete response \[sCR\] rate) with CPd maintenance. II. To evaluate the safety of the CPd combination as maintenance regimen. III. To characterize safety in subjects who receive CPd maintenance. IV. To evaluate the duration of response (DOR). V. To evaluate the overall survival (OS) in high-risk patients. VI. To evaluate the minimal residual disease (MRD) detection with CPd maintenance. OUTLINE: Patients receive carfilzomib intravenously (IV) over 30 minutes on days 1, 8, and 15, pomalidomide orally (PO) daily on days 1-21, and dexamethasone PO daily on days 1, 8, and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
29
Emory University Hospital/Winship Cancer Institute
Atlanta, Georgia, United States
≥ Complete response (CR) rates
Completed response (CR) rates will be determined for CPd maintenance.
Time frame: Up to 2 years after study start
Progression-free survival (PFS)
Progression-free survival (PFS) is defined as the time from first dose until documented progression or death. A subject who neither progresses nor dies will be censored on the date of his or her last tumor assessments. PFS will be determined by using all enrolled patients in accordance with the intention to treat (ITT) principle.
Time frame: From first dose until documented progression or death, assessed at 18 months
Best response on-study
Best response on-study refers to the best response (very good partial response rate \[VGPR\], stringent complete response \[sCR\] rate) prior to discontinuation of all study therapy.
Time frame: Up to 2 years after study start
Objective response rate (ORR) defined as the proportion of treated subjects who achieve a best response of CR, stringent complete response (sCR), very good partial response (VGPR), or partial response (PR)
The objective response rate (ORR) will be assessed using International Myeloma Working Group (IMWG) criteria.
Time frame: Up to 2 years after study start
Duration of response (DOR)
Duration of response (DOR) is the time from first response (PR or better) until a progression event (documented progression or death). Only subjects who ever achieved a response of PR or better will be considered. Subjects who neither progress nor die will be censored on the date of their last tumor assessment.
Time frame: From first response (PR or better) until a progression event (documented progression or death), assessed up to 2 years
Overall survival (OS)
Overall survival (OS) is defined as the time from first dose until documented death.
Time frame: Up to 2 years after study start
Minimal residual disease (MRD) detection
The achievement of minimal residual disease (MRD) will be evaluated and reported on patients that achieve a complete response. MRD testing will be performed by adaptive clonoSEQ testing.
Time frame: Up to 2 years after study start
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