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Multiple MyelomaPhase 1/2NCT01832727

Phase 1b/2, Multicenter, Open-label Study of Oprozomib and Dexamethasone in Patients With Relapsed and/or Refractory Multiple Myeloma

A Phase 1/2 study testing Oprozomib and Dexamethasone in people with Multiple Myeloma, run by Amgen at 13 sites in 2 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The primary objectives are: Phase 1b: To determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of oprozomib given orally, once daily, on 2 different schedules. To evaluate safety and tolerability Phase 2: To estimate the overall response rate (ORR). To evaluate safety and tolerability Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Multiple Myeloma
What is being tested?
Oprozomib and Dexamethasone
Could I receive a placebo?
No, everyone receives an active treatment
How many people
65 participants
Where
13 sitesin 2 countries
Study dates
2 Jul 2013to 25 Jun 2019
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diagnosis of multiple myeloma with measureable disease as indicated by 1 or more of the following:
  • a. Serum M-protein ≥ 500 mg/dL
  • b. Urine M-protein ≥ 200 mg/24 hours
  • c. Only for subjects without measurable serum and urine M-protein, serum free light chain: Involved free light chain (FLC) level ≥ 10 mg/dL, provided serum FLC ratio is abnormal
  • Patients requiring therapy who have relapsed and/or are refractory to their last therapy and have been treated with at least 1, but not more than 5, lines of multiple myeloma therapy. Prior therapy must have consisted of at least 1 regimen that included lenalidomide and/or bortezomib. Patients should be considered to be appropriate candidates for a clinical study by their treating physicians. Relapsed patients must have previously achieved ≥ minimal response (MR) on at least 1 line of therapy, as assessed by the treating physician. Refractory patients are allowed, but it is not required that patients be refractory to their last therapy. Primary refractory patients are allowed in the Phase 1b portion of the study only.
  • Males and females ≥ 18 years of age
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  • Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0-2
  • Adequate hepatic function, with bilirubin ≤ 1.5 times the upper limit of normal (ULN) in the absence of Gilbert's disease or hemolysis, aspartate aminotransferase (AST) ≤ 3 times ULN, and alanine aminotransferase (ALT) ≤ 3 times ULN
  • Absolute neutrophil count (ANC) ≥ 1000 cells/mcL, hemoglobin ≥ 7.0 g/dL, and platelet count ≥ 30,000 cells/mcL:
  • a. Patients must not have received platelet transfusions for at least 1 week prior to Screening.
  • b. Screening ANC must be independent of granulocyte colony-stimulating factor and granulocyte-macrophage colony-stimulating factor (G-CSF and GM-CSF) support for at least 1 week and of pegylated G-CSF for
  • ≥ 2 weeks prior to first dose.
  • c. Patients may receive red blood cell (RBC) transfusions or receive supportive care with erythropoietin or darbepoetin in accordance with institutional guidelines.
  • Calculated or measured creatinine clearance (CrCl) of ≥ 30 mL/minute calculated using the formula of Cockcroft and Gault ([140 - Age] * Mass (kg) / [72 * creatinine mg/mL]). Multiply result by 0.85 if female.
  • Uric acid, if elevated, must be corrected to within laboratory normal range before dosing.
  • Patients must sign a written informed consent form in accordance with federal, local, and institutional guidelines.
  • Female patients of childbearing potential must have a negative serum or urine pregnancy test within 3 days prior to receiving the first dose of study drug and agree to use effective methods of contraception during the study and for 3 months following the last dose of study drug. Postmenopausal females (> 45 years old and without menses for > 1 year) and surgically sterilized females are exempt from these requirements. Male patients must use an effective barrier method of contraception during the study and for 3 months following the last dose if sexually active with a female of childbearing potential.
  • Prior carfilzomib is not required but is allowed if a patient had at least 2 cycles of carfilzomib alone or in combination with a dose of at least 20/27 mg/m^2, as long as the patient:
  • a. Had at least a partial response to prior carfilzomib therapy
  • b. Was not removed from carfilzomib therapy due to toxicity, unless approved by the medical monitor
  • c. Was not removed from carfilzomib therapy for progressive disease nor experienced progressive disease within 6 months after any prior carfilzomib therapy.

Who cannot join

  • Radiation therapy within 2 weeks prior to first dose; localized radiation therapy within 1 week prior to first dose
  • Immunotherapy/standard myeloma therapy within 2 weeks prior to first dose (except for antibody therapy, where 6 weeks are required, and alkylator therapy, where 3 weeks are required); prior stem cell transplant (SCT) therapy (autologous SCT within the prior 8 weeks; allogeneic SCT within the prior 16 weeks). Patients with prior allogeneic SCT should not have evidence of moderate-to-severe graft-versus-host disease (GvHD).
  • Plasmapheresis is not permitted at any time during the Screening period or while the subject is receiving study treatment. If a subject has started screening procedures requiring plasmapheresis, or is anticipated to require plasmapheresis during or after the Screening period, this patient will be considered ineligible and should not be enrolled.
  • Glucocorticoid therapy within 14 days prior to enrollment that exceeds a cumulative dose of 160 mg of dexamethasone or equivalent
  • Participation in an investigational therapeutic study within 3 weeks prior to first dose
  • Prior oprozomib exposure
Show all 21Show fewer
  • Known hypersensitivity/toxicity or intolerance to dexamethasone
  • Major surgery within 3 weeks prior to first dose
  • Congestive heart failure ([CHF] New York Heart Association Class III to IV), symptomatic ischemia, conduction abnormalities uncontrolled by conventional intervention, or myocardial infarction within 6 months prior to first dose
  • Uncontrolled hypertension or uncontrolled diabetes
  • Active infection requiring systemic antibiotics, antivirals, or antifungals within 2 weeks prior to first dose
  • Known or suspected human immunodeficiency virus (HIV) infection or patients who are HIV seropositive
  • Active hepatitis A, B, or C infection
  • History of previous clinically significant GI bleed in the last 6 months prior to first dose
  • Significant neuropathy (Grade 3, Grade 4, or Grade 2 with pain) at the time of the first dose
  • Other malignancy within the past 3 years, with the exception of adequately treated basal cell carcinoma of the skin, squamous cell skin cancer, thyroid cancer, carcinoma in situ of the cervix, carcinoma in situ of the breast, prostate cancer of Gleason Score of 6 or less with stable prostate specific antigen levels, or cancer considered cured by surgical resection
  • Plasma cell leukemia
  • Female patients who are pregnant or nursing
  • Inability to swallow medication, inability or unwillingness to comply with the drug administration requirements, or GI condition that could interfere with the oral absorption or tolerance of treatment
  • Any contraindication to oral hydration (e.g., significant preexisting comorbidity or fluid restriction)
  • Any clinically significant psychiatric or medical condition that in the opinion of the investigator could increase patient risk or interfere with protocol adherence or a patient's ability to give informed consent.

Trial locations and contacts

13 sites in 2 countries.

13 sites in 2 countries

United States10 sites
  • Center for Cancer and Blood Disorders

    Bethesda, Maryland

  • Dana-Farber Cancer Institute

    Boston, Massachusetts

  • Massachusetts General Hospital

    Boston, Massachusetts

  • Gabrail Cancer Center Research

    Canton, Ohio

  • Division of Hematology/ Oncology, UNC at Chapel Hill

    Chapel Hill, North Carolina

  • Karmanos Cancer Institute

    Detroit, Michigan

  • USC/Norris Comprehensive Cancer Center

    Los Angeles, California

  • Froedtert Hospital and the Medical College of Wisconsin

    Milwaukee, Wisconsin

  • H. Lee Moffitt Cancer Center & Research Institute

    Tampa, Florida

  • University of Kansas Cancer Center and Medical Pavilion

    Westwood, Kansas

Other trials in United States

France3 sites
  • CHRU, Hopital Huriez - Department of Hematology

    Lille

  • CHU Hotel Dieu - Service d'Hematologie Clinique

    Nantes

  • CHU de NANCY - Hopital de BRABOlS

    Vandœuvre-lès-Nancy

Other trials in France

About this study

The primary objectives are:

Phase 1b:

  • To determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of oprozomib given orally, once daily, on 2 different schedules.
  • To evaluate safety and tolerability

Phase 2:

  • To estimate the overall response rate (ORR).
  • To evaluate safety and tolerability
Read the detailed description

The purpose of the Phase 1b portion of the study was to determine the maximum tolerated dose (MTD), the recommended phase 2 dose (RP2D), safety, and pharmacokinetics (PK) of oprozomib administered orally once daily in combination with dexamethasone, in participants with relapsed and/or refractory multiple myeloma, using a 3 + 3 dose-escalation scheme with and without step-up dosing. The MTD was defined as the highest dose level at which fewer than 33% of participants had a dose-limiting toxicity (DLT).

Being tested
Oprozomib, Dexamethasone
Keywords
multiple myeloma, oprozomib, OPZ, ONX 0912, Onyx, proteasome inhibitor, oprozomib tablets
Medical subject headings
Multiple Myeloma

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • OprozomibDrug

    Also called OPZ, ONX 0912, oprozomib ER

    Oprozomib tablets were supplied containing 60, 90, or 120 mg of oprozomib. Oprozomib extended release tablets were supplied containing 150, 180, 210, 240, or 270 mg of oprozomib. Both formulations were administered in a single dose on dosing days. The tablet formulation required multiple tablets to reach each dose on dosing days.

  • DexamethasoneDrug

    Dexamethasone was administered as 20 mg tablets in strengths of 4 and 6 mg taken orally. If a participant could not tolerate tablets or tablets were unavailable, 20 mg administered intravenously was substituted.

Study groups in NCT01832727
Study groupRoleWhat they receive
Cohort 180 mg 5/14 Schedule (Phase 1b)ExperimentalOprozomib 180 mg treatment once daily for 5 consecutive days bimonthly (days 1, 2, 3, 4, and 5 of a 14-day cycle) with 20 mg dexamethasone once daily on days 1, 2, 8, and 9 (referred to as the 5/14 schedule). Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 210 mg 5/14 Schedule (Phase 1b)ExperimentalOprozomib 210 mg treatment once daily for 5 consecutive days bimonthly (days 1, 2, 3, 4, and 5 of a 14-day cycle) with 20 mg dexamethasone once daily on days 1, 2, 8, and 9 (referred to as the 5/14 schedule). Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason. This was the first cohort to enroll participants into the 5/14 schedule. The Cohort Safety Review Committee (CSRC) reviewed safety data and made dose adjustments for oprozomib in 30 mg increments for all cohorts.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 150/180 mg 5/14 Schedule (Phase 1b)ExperimentalOprozomib 150 mg once daily treatment for 5 consecutive days (days 1, 2, 3, 4, and 5 of a 14-day cycle) followed by a step-up in oprozomib once daily dose to 180 mg starting in cycle 2 and moving forward. Dexamethasone 20 mg once daily was administered on days 1, 2, 8, and 9 of each 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 210 mg 2/7 Schedule (Phase 1b)ExperimentalOprozomib 210 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason. This was the first cohort to enroll participants into the 2/7 schedule. The Cohort Safety Review Committee (CSRC) reviewed safety data and made dose adjustments for oprozomib in 30 mg increments for all cohorts.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 240 mg 2/7 Schedule (Phase 1b)ExperimentalOprozomib 240 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 270 mg 2/7 Schedule (Phase 1b)ExperimentalOprozomib 270 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 300 mg 2/7 Schedule (Phase 1b)ExperimentalOprozomib 300 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Cohort 330 mg 2/7 Schedule (Phase 1b)ExperimentalOprozomib 330 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone
Phase 2 300 mg 2/7 ScheduleExperimentalThe Cohort Safety Review Committee (CSRC) determined this dose as the recommended phase 2 dose (RP2D). Oprozomib 300 mg once daily on Days 1, 2, 8, and 9 of a 14-day treatment cycle in combination with 20 mg dexamethasone once daily on Days 1, 2, 8, and 9 of a 14-day cycle. Treatment was administered in 14-day cycles until disease progression, unacceptable toxicity, or study treatment discontinuation for any reason.
Receives: Drug: Oprozomib; Drug: Dexamethasone

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Participants With Dose-Limiting Toxicities (DLT)

    Toxicities (graded per the Common Terminology Criteria for Adverse Events v 4.03) were considered DLTs if judged by the investigator to be related to oprozomib and occurred in the first 14 days of treatment, with treatment at the dose to be studied (i.e., Cycle 1 for continuous dosing or Cycle 2 for step-up dosing). A DLT was categorized as nonhematologic or hematologic. Examples include:

    • Any ≥ Grade 3 nonhematologic AE, with exceptions or qualifications such as Grade 3 nausea, vomiting, diarrhea, or constipation were considered a DLT only if lasting for > 7 days despite optimal supportive care
    • Grade 3 fatigue lasting > 14 days
    • Grade 4 neutropenia: absolute neutrophil count (ANC) < 500 cells/mcL lasting ≥ 7 days
    • Febrile neutropenia: Any single temperature ≥ 38.3°C or a sustained temperature of ≥ 38.0°C for over 1 hour with ≥ Grade 3 neutropenia (ANC < 1000 cells/mcL)
    • Grade 3/4 thrombocytopenia
    • Others specified in the protocol

    Measured: Day 1 to Day 14 (Cycle 1) for continous dosing and Day 15 to Day 28 (Cycle 2) for step-up dosing

  2. Participants With Treatment-Emergent Adverse Events (TEAEs) During Phase 1b and 2

    AE defined as any untoward medical occurrence in a clinical trial participant. Treatment-emergent adverse events were defined as adverse events that start on or after the first day of study treatment and within 30 days of the last day of study treatment. An adverse event that was present before the first administration of study treatment and subsequently worsens in severity during treatment was also considered to be treatment-emergent.

    Serious AE defined as AE that is fatal, life threatening, requires in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or other significant medical hazard. Severity of AEs assessed according to Common Terminology Criteria for Adverse Events (CTCAE, v4.03) based on the general guideline: Grade 1: Mild; Grade 2: Moderate; Grade 3: Severe; Grade 4: Life-threatening or disabling; Grade 5: Death related to AE.

    IP=investigational product

    Measured: Day 1 up to Week 282

  3. Participants With Treatment-Related, Treatment-Emergent Adverse Events (TEAEs) During Phase 1b and 2

    AE defined as any untoward medical occurrence in a clinical trial participant. TEAEs were defined as AEs that start on or after the first day of study treatment and within 30 days of the last day of study treatment. An AE that was present before the first administration of study treatment and subsequently worsens in severity during treatment was also considered a TEAE.

    Investigator assessed AEs for relatedness to study drug. Serious AE defined as AE that is fatal, life threatening, requires in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or other significant medical hazard. Severity of AEs assessed according to Common Terminology Criteria for Adverse Events (CTCAE, v4.03) based on the general guideline: Grade 1: Mild; Grade 2: Moderate; Grade 3: Severe; Grade 4: Life-threatening or disabling; Grade 5: Death related to AE.

    IP=investigational product

    Measured: Day 1 up to Week 282

  4. Best Overall Response in Phase 2 as Assessed by Investigator

    Disease response and progression were determined using the International Myeloma Working Group-Uniform Response Criteria (IMWG-URC), except for minimal response (MR) and near complete response (nCR) which was based on the European Group for Blood and Marrow Transplantation (EBMT) criteria. Evaluations reported were assessed by the investigator for participants in Phase 2.

    Measured: Screening: Day 14 to Day -1; During study: Day 1 up to 13.16 months

  5. Percentage of Participants Who Achieved an Overall Response As Assessed by Investigator During Phase 2

    The overall response rate (ORR) was defined as the percentage of participants with the best overall response of stringent complete response (sCR), complete response (CR), near complete response (nCR), very good partial response (VGPR), and partial response (PR) as defined by the International Myeloma Working Group-Uniform Response Criteria (IMWG-URC) and modified European Group for Blood and Marrow Transplantation (EBMT) criteria.

    Measured: Screening: Day 14 to Day -1; During study: Day 1 up to 13.16 months

Secondary outcomes (11)
  1. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Time to Maximum Serum Concentration (Tmax) on Cycle 1, Day 1

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  2. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Maximum Serum Concentration (Cmax) on Cycle 1, Day 1

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  3. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Area Under the Curve at the Last Measurable Time Point (AUClast) on Cycle 1, Day 1

    The area under the plasma concentration-time curve from time 0 to the time of the last quantifiable concentration (AUClast) was estimated using the linear trapezoidal method.

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  4. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Area Under the Curve From Time 0 to Time Infinity (AUCinf) on Cycle 1, Day 1

    The area under the plasma concentration-curve from time 0 to time infinity (AUCinf) was estimated using the linear trapezoidal method

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  5. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Terminal Half-Life (t1/2,z) on Cycle 1, Day 1

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  6. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Apparent Drug Clearance After Oral Administration (CL/F) on Cycle 1, Day 1

    The apparent drug clearance after oral administration (CL/F) was calculated as the dose divided by AUCinf.

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  7. Pharmacokinetic (PK) Parameter for Oprozomib, Tablet and ER Formulation: Apparent Volume of Distribution After Oral Administration (Vz/F) on Cycle 1, Day 1

    The apparent volume of distribution after oral administration (Vz/F) calculated as the dose divided by AUCinf times ƒz, where ƒz was the first-order terminal rate constant estimated via linear regression of the terminal log-linear phase.

    PK samples obtained on the following schedule:

    Phase 1b Continuous Dosing, Cycles 1 and 2: Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 8 hours post-dose plus pre-dose on Day 2 Phase 1b Step-up Dosing, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2 Phase 2, Day 1: pre-dose, post-dose at 15 and 30 minutes, 1, 2, 4, 6, and 7 hours post-dose plus pre-dose on Day 2

    Measured: Day 1

  8. Percentage of Participants Who Achieved a Clinical Benefit Response As Assessed by Investigator During Phase 2

    The clinical benefit rate (CBR) was defined as Overall Response Rate (ORR) plus Minimal Response (MR) as defined by the European Group for Blood and Marrow Transplantation (EBMT) criteria.

    Measured: Screening: Day 14 to Day -1; During study: Day 1 up to 13.16 months

  9. Kaplan-Meier Estimates for Duration of Response (DOR) as Assessed by Investigator During Phase 2

    Duration of response was defined as the time from first evidence of partial response (PR) or better (i.e. best overall response) to confirmation of disease progression or death due to any cause. Durations were calculated for responders only. Medians and percentiles were estimated using the Kaplan-Meier method. 95% confidence intervals for medians and percentiles were estimated using the method by Klein and Moeschberger (1997) with log-log transformation.

    Measured: Day 1 up to 13.16 months

  10. Kaplan-Meier Estimates for Progression-free Survival (PFS) as Assessed by Investigator During Phase 2

    Progression-free survival (PFS) was defined as number of months between start of treatment and first evidence of documented disease progression or death (due to any cause), whichever occurs first. Disease progression was determined using IMWG-URC per investigator. The duration of PFS was right-censored for participants who met 1 of the following conditions:

    • 1) starting a new anticancer therapy before documentation of disease progression or death;
    • 2) death or disease progression immediately after more than 1 consecutively missed disease assessment visit or;
    • 3) alive without documentation of disease progression before the data cutoff date. 95% CIs for medians were estimated using the method by Klein and Moeschberger (1997) with log-log transformation.

    Measured: Day 1 up to 14.1 months

  11. Kaplan-Meier Estimate for Time to Progression (TTP) as Assessed by Investigator During Phase 2

    Time to progression (TTP) was defined as the number of months between the start of treatment to the first documentation of disease progression. Disease progression was determined using IMWG-URC as assessed by the investigator. The same censoring rules, except for death, as in analysis of PFS were applied in the calculation of TTP.

    Participants who died prior to progressive disease were censored at the date of last evaluable response assessment.

    Measured: Day 1 up to 14.1 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Apr 2013 (estimated)
  2. Study start2 Jul 2013
  3. Primary completion25 Jun 2019
  4. Study completion25 Jun 2019

Why it stopped: Enrollment halted during phase 2 to reformulate the investigational product

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
65 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01832727
Sponsor's protocol ID
2012-001
Other IDs
20130408, 2013-001169-18
Status last verified
Jun 2020
First submitted
10 Apr 2013
Last updated
13 Jul 2020
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Hari P, Paba-Prada CE, Voorhees PM, Frye J, Chang YL, Moreau P, Zonder J, Boccia R, Shain KH. Efficacy and safety results from a phase 1b/2, multicenter, open-label study of oprozomib and dexamethasone in patients with relapsed and/or refractory multiple myeloma. Leuk Res. 2019 Aug;83:106172. doi: 10.1016/j.leukres.2019.106172. Epub 2019 Jun 17.

    PubMed 31229804

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Oprozomib and Dexamethasone in people with Multiple Myeloma, run by Amgen at 13 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 21 inclusion and 21 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 13 Jul 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 13 sites in United States, France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 13 Jul 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Participants With Dose-Limiting Toxicities (DLT) (time frame: Day 1 to Day 14 (Cycle 1) for continous dosing and Day 15 to Day 28 (Cycle 2) for step-up dosing). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01832727, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jul 2020.

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