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NCT00721734 · OUTCOME

Clearance (CL) of Carfilzomib on Day 1 of Cycle 1

Study of the Safety and Pharmacokinetics of Carfilzomib in Patients With Relapsed and Refractory Multiple Myeloma and Varying Degrees of Renal Function · Source last updated 2017-05-02

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEAN
Unit
liters/hour
Interval / dispersion
Standard Deviation
Time frame
Cycle 1, Day 1 before dosing, at the end of the injection, 5, 15, 30, and 60 minutes, and 1.5, 2, 4, 6 and 24 hours postdose.

What was measured

Plasma concentrations of carfilzomib was determined by a validated liquid chromatography tandem mass spectrometry (LC MS/MS) method. The lower limit of quantitation (LLOQ) was 0.300 ng/mL. Concentration values that were below the LLOQ (BLQ) were set to zero. Pharmacokinetic (PK) parameters were calculated from the individual plasma concentrations of carfilzomib using a noncompartmental method.

Analysis population: The pharmacokinetic (PK) evaluable population includes participants with stable baseline renal function (Arms 1-4) who completed all protocol-specified treatment and PK blood sample collection through Cycle 1, Day 16. In Group 5, only samples collected before dialysis were included. CL could not be estimated for 11 patients in the PK population.

Groups in this outcome

Carfilzomib - Normal RF

Participants with normal renal function (RF; defined as 24-hour urine creatinine clearance (CrCL) \> 80 mL/minute) received carfilzomib, 15 mg/m², administered intravenously (IV) on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.

Carfilzomib - Mild RI

Participants with mild renal impairment (RI; CrCL between 50-80 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.

Carfilzomib - Moderate RI

Participants with moderate renal impairment (CrCL between 30-49 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.

Carfilzomib - Severe RI

Participants with severe renal impairment (CrCL \< 30 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.

Carfilzomib - Dialysis

Participants undergoing chronic hemodialysis received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Carfilzomib - Normal RF6
Carfilzomib - Mild RI6
Carfilzomib - Moderate RI3
Carfilzomib - Severe RI4
Carfilzomib - Dialysis5

Reported measurements

Source class 1
Values in liters/hour · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Carfilzomib - Normal RF15179.3Not reportedNot reportedNot reported
Carfilzomib - Mild RI11340.7Not reportedNot reportedNot reported
Carfilzomib - Moderate RI288264Not reportedNot reportedNot reported
Carfilzomib - Severe RI17058.4Not reportedNot reportedNot reported
Carfilzomib - Dialysis17060.2Not reportedNot reportedNot reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    -2.129
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.914
    group Description
    In order to estimate a possible effect of renal function, the relationship between the clearance of carfilzomib and creatinine clearance (CrCl) was explored using a mixed-effects model that included CrCl. The slope of the regression of CL as a function of CrCL at Cycle 1, Day 1 was evaluated using a linear regression model that included CrCL as continuous variables (excluding the hemodialysis group).
    group Ids
    1. OG000
    2. OG001
    3. OG002
    4. OG003
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.4114
    param Type
    Slope
    param Value
    -0.607
    statistical Method
    Regression, Linear
Complete source fields
analyses
  1. ci Lower Limit
    -2.129
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.914
    group Description
    In order to estimate a possible effect of renal function, the relationship between the clearance of carfilzomib and creatinine clearance (CrCl) was explored using a mixed-effects model that included CrCl. The slope of the regression of CL as a function of CrCL at Cycle 1, Day 1 was evaluated using a linear regression model that included CrCL as continuous variables (excluding the hemodialysis group).
    group Ids
    1. OG000
    2. OG001
    3. OG002
    4. OG003
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.4114
    param Type
    Slope
    param Value
    -0.607
    statistical Method
    Regression, Linear
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        79.3
        value
        151
      2. group Id
        OG001
        spread
        40.7
        value
        113
      3. group Id
        OG002
        spread
        264
        value
        288
      4. group Id
        OG003
        spread
        58.4
        value
        170
      5. group Id
        OG004
        spread
        60.2
        value
        170
denoms
  1. counts
    1. group Id
      OG000
      value
      6
    2. group Id
      OG001
      value
      6
    3. group Id
      OG002
      value
      3
    4. group Id
      OG003
      value
      4
    5. group Id
      OG004
      value
      5
    units
    Participants
description
Plasma concentrations of carfilzomib was determined by a validated liquid chromatography tandem mass spectrometry (LC MS/MS) method. The lower limit of quantitation (LLOQ) was 0.300 ng/mL. Concentration values that were below the LLOQ (BLQ) were set to zero. Pharmacokinetic (PK) parameters were calculated from the individual plasma concentrations of carfilzomib using a noncompartmental method.
dispersion Type
Standard Deviation
groups
  1. description
    Participants with normal renal function (RF; defined as 24-hour urine creatinine clearance (CrCL) \> 80 mL/minute) received carfilzomib, 15 mg/m², administered intravenously (IV) on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.
    id
    OG000
    title
    Carfilzomib - Normal RF
  2. description
    Participants with mild renal impairment (RI; CrCL between 50-80 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.
    id
    OG001
    title
    Carfilzomib - Mild RI
  3. description
    Participants with moderate renal impairment (CrCL between 30-49 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.
    id
    OG002
    title
    Carfilzomib - Moderate RI
  4. description
    Participants with severe renal impairment (CrCL \< 30 mL/minute) received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.
    id
    OG003
    title
    Carfilzomib - Severe RI
  5. description
    Participants undergoing chronic hemodialysis received carfilzomib, 15 mg/m², administered intravenously on Days 1, 2, 8, 9, 15, and 16 of repeated 28-day cycles for a maximum of 12 cycles. If the 15 mg/m² dose was tolerated the dose could be increased to 20 mg/m² starting at Cycle 2. If 20 mg/m² was tolerated, an additional dose escalation to 27 mg/m² was allowed at Cycle 3 or at subsequent cycles.
    id
    OG004
    title
    Carfilzomib - Dialysis
param Type
MEAN
population Description
The pharmacokinetic (PK) evaluable population includes participants with stable baseline renal function (Arms 1-4) who completed all protocol-specified treatment and PK blood sample collection through Cycle 1, Day 16. In Group 5, only samples collected before dialysis were included. CL could not be estimated for 11 patients in the PK population.
reporting Status
POSTED
time Frame
Cycle 1, Day 1 before dosing, at the end of the injection, 5, 15, 30, and 60 minutes, and 1.5, 2, 4, 6 and 24 hours postdose.
title
Clearance (CL) of Carfilzomib on Day 1 of Cycle 1
type
PRIMARY
unit Of Measure
liters/hour

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Preserved source evidence · Not medical advice