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Phase 2 N=165 Randomized Treatment

Ixazomib Citrate in Treating Patients With Relapsed Multiple Myeloma That Is Not Refractory to Bortezomib

Recurrent Plasma Cell Myeloma · Refractory Plasma Cell Myeloma

Enrolled (actual)
165
Serious AEs
40.5%
Results posted
Jun 2024
Primary outcome: Primary: Proportion of Confirmed Responses With Ixazomib Citrate Alone (Arm A [Closed]), Ixazomib Citrate With Dexamethasone (Arms B + C), or With Dexamethasone and Cyclophosphamide (Arm D), or With Dexamethasone, Cyclophosphamide, Daratumumab (Arm E) — 0.1563; 0.3143; 0.5429; 0.6667 proportion of participants

Study Design & Population

Study type
Interventional
Phase
Phase 2
Interventions
Cyclophosphamide (Drug); Daratumumab (Biological); Dexamethasone (Drug); Ixazomib Citrate (Drug); Laboratory Biomarker Analysis (Other)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
Mayo Clinic
Primary completion
Apr 2023

Outcome Measures

OutcomeResultp-value
PRIMARY
Proportion of Confirmed Responses With Ixazomib Citrate Alone (Arm A [Closed]), Ixazomib Citrate With Dexamethasone (Arms B + C), or With Dexamethasone and Cyclophosphamide (Arm D), or With Dexamethasone, Cyclophosphamide, Daratumumab (Arm E)
0.1563; 0.3143; 0.5429; 0.6667; 0.750
SECONDARY
Confirmed Response Rate With the Addition of Dexamethasone (Arm A Only)
0.3438
SECONDARY
Overall Survival
NA; NA; NA; NA; NA
SECONDARY
Event-free Survival
11.5; 8.4; 7.8; 18.8; 29.5
SECONDARY
Incidence of Adverse Events

Summary

This phase II trial studies how well ixazomib citrate works in treating patients with multiple myeloma that has returned after a period of improvement (relapsed) but is not resistant to bortezomib (refractory). Ixazomib citrate may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth.

Eligibility Criteria

Inclusion Criteria

  • Calculated creatinine clearance (using Cockcroft-Gault equation) >= 30 mL/min (obtained = = 1000/mL (obtained = = 75000/mL (obtained = = 8.0 g/dL (obtained = = 1.0 g/dL
  • >= 200 mg of monoclonal protein in the urine on 24 hour electrophoresis
  • Serum immunoglobulin free light chain >= 10 mg/dL AND abnormal serum immunoglobulin kappa to lambda free light chain ratio
  • For patients with extramedullary disease (EMD) measurable disease by computed tomography (CT) or magnetic resonance imaging (MRI) or the CT portion of the positron emission tomography (PET)/CT: Must have at least one lesion that has a single diameter of >= 2 cm. Skin lesions can be used if the area is >= 2 cm in at least one diameter and measured with a ruler
  • Plasma cell count >= 0.5 x 10^9/L or 5 percent of the peripheral blood white cells
  • Plasma cell count if determined by flow cytometry, >= 200/150,000 events
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1, 2
  • Provide informed written consent
  • Negative pregnancy test done = = grade 3 peripheral neuropathy, or grade 2 with pain on clinical examination during the screening period
  • Major surgery within 14 days before study registration
  • Systemic treatment with strong inhibitors of cytochrome P450, family 1, subfamily A (CYP3A) inducers (rifampin, rifapentine, rifabutin, carbamazepine, phenytoin, phenobarbital), or use of Ginkgo biloba or St. John's wort within 14 days before the first dose of study treatment
  • Evidence of current uncontrolled cardiovascular conditions, including cardiac arrhythmias, congestive heart failure, angina, or myocardial infarction within the past 6 months; Note: prior to study entry, any electrocardiogram (ECG) abnormality at screening must be documented by the investigator as not medically relevant
  • Known human immunodeficiency virus (HIV) positive
  • Known hepatitis B surface antigen-positive status, or known or suspected active hepatitis C infection
  • Any serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the completion of treatment according to this protocol
  • Known allergy to any of the study medications, their analogues or excipients in the various formulations
  • Known gastrointestinal (GI) disease or GI procedure that could interfere with the oral absorption or tolerance of ixazomib including difficulty swallowing
  • Diarrhea > grade 1, based on the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) grading, in the absence of antidiarrheals
  • Arm E only: Refractory to any combination of a proteasome inhibitor and daratumumab
  • Arm E only: Known chronic obstructive pulmonary disease with a forced expiratory volume in 1 second (FEV1) < 50% of predicted normal. (Note that FEV1 testing is required for subjects suspected of having chronic obstructive pulmonary disease and subjects must be excluded if FEV1 < 50% of predicted normal.)
  • Arm E only: Known moderate or severe persistent asthma within the past 2 years or currently has uncontrolled asthma of any classification
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT01415882). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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