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NCT00811733 · OUTCOME

Cmax and Ctrough of Ofatumumab

A Phase II Trial of Ofatumumab in Subjects With Waldenstrom's Macroglobulinemia · Source last updated 2017-05-30

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

Measure
GEOMETRIC_MEAN
Unit
micrograms/milliliter (µg/ml)
Interval / dispersion
95% Confidence Interval
Time frame
From the first dose (Cycle 1 Day 1) up to 6 months after the end of the last cycle of treatment; blood collected on each dosing day, weekly up to Week 8, and every 4 weeks up to Week 24/Month 7

What was measured

Cmax is defined as the maximum observed drug concentration after administration, and Ctrough is defined as the drug concentration observed prior to the start of the next dose. Blood samples for the quantification of ofatumumab were collected during each cycle and for up to 6 months after the end of each cycle.

Analysis population: PK Population. Data were provided for the number of participants attending each visit for whom the parameter could be determined.

Groups in this outcome

300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5

Participants received ofatumumab intravenously (IV) in Cycle 1 (defined as a treatment period of up to 4 weeks \[Weeks (Wk.) 1 through 4\]) (300 milligrams \[mg\] at Week 1 and 1000 mg at Weeks 2 through 4) and were followed up for 11 weeks (Weeks 5-16). After Week 16, during the Redosing Cycle (RC), participants who had Minor Response or stable disease after Cycle 1 and had not received another Waldenstrom's Macroglobulinemia (WM) therapy received 300 mg IV ofatumumab at Week 1 and 2000 mg IV ofatumumab at Weeks 2 through 5. Participants who achieved a response in either Cycle 1 or the RC and subsequently progressed before 36 months entered Cycle 2 of treatment and received IV ofatumumab 300 mg at Week 1 and IV ofatumumab 2000 mg during Weeks 2 through 5.

300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5

Participants received ofatumumab IV at 300 mg at Week 1 and 2000 mg at Weeks 2 through 5 in Cycle 1 (defined as a treatment period of up to 5 weeks \[Weeks 1 through 5\]) and were followed up for 10 weeks (Weeks 6-16). After Week 16, during the RC, participants who had Minor Response or stable disease after Cycle 1 and had not received another WM therapy received 300 mg IV ofatumumab at Week 1 and 2000 mg IV ofatumumab at Weeks 2 through 5. Participants who achieved a response and subsequently progressed before 36 months entered Cycle 2 of treatment and received 300 mg at Week 1 and 2000 mg during Weeks 2 through 5.

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

Analysis denominator · Participants

GroupSource count
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-515
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-521

Reported measurements

Cmax, Course 1 Dose 1, n=14,19
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-568.3Not reported48.097.1Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-572.1Not reported57.490.6Not reported
Cmax, Course 1 Dose 3, n=0,19
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5NANot reportedNANANo participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5465Not reported386561Not reported
Cmax, Course 1 Dose 4, n=13,0
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5259Not reported195344Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5NANot reportedNANANo participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
Cmax, Course 1 Dose 5, n=0,18
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5NANot reportedNANANo participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5640Not reported523783Not reported
Ctrough, Course 1 Dose 2, n=7,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-53.0Not reported0.327.4Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-58.0Not reported2.032.2Not reported
Ctrough, Course 1 Dose 3, n=11,19
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-513.9Not reported2.191.3Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5121Not reported67.3217Not reported
Ctrough, Course 1 Dose 4, n=13,21
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-523.4Not reported4.3128Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5181Not reported95.3344Not reported
Ctrough, Course 1 Dose 5, n=0,18
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5NANot reportedNANANo participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5249Not reported127489Not reported
Cmax, Course 2 Dose 1, n=9,11
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-553.2Not reported33.185.6Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-564.8Not reported42.898.2Not reported
Cmax, Course 2 Dose 3, n=8,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5554Not reported420730Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5577Not reported436762Not reported
Cmax, Course 2 Dose 5, n=10,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5528Not reported339825Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5803Not reported6161046Not reported
Ctrough, Course 2 Dose 2, n=7,10
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-58.1Not reported1.252.7Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-520.4Not reported4.789.2Not reported
Ctrough, Course 2 Dose 3, n=8,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5144Not reported64.6319Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5169Not reported102280Not reported
Ctrough, Course 2 Dose 4, n=11,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5225Not reported110458Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5310Not reported200482Not reported
Ctrough, Course 2 Dose 5, n=11,12
Values in micrograms/milliliter (µg/ml) · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5279Not reported155503Not reported
300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5384Not reported273542Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        48.0
        upper Limit
        97.1
        value
        68.3
      2. group Id
        OG001
        lower Limit
        57.4
        upper Limit
        90.6
        value
        72.1
    title
    Cmax, Course 1 Dose 1, n=14,19
  2. categories
    1. measurements
      1. comment
        No participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. group Id
        OG001
        lower Limit
        386
        upper Limit
        561
        value
        465
    title
    Cmax, Course 1 Dose 3, n=0,19
  3. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        195
        upper Limit
        344
        value
        259
      2. comment
        No participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
        group Id
        OG001
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
    title
    Cmax, Course 1 Dose 4, n=13,0
  4. categories
    1. measurements
      1. comment
        No participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. group Id
        OG001
        lower Limit
        523
        upper Limit
        783
        value
        640
    title
    Cmax, Course 1 Dose 5, n=0,18
  5. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        0.3
        upper Limit
        27.4
        value
        3.0
      2. group Id
        OG001
        lower Limit
        2.0
        upper Limit
        32.2
        value
        8.0
    title
    Ctrough, Course 1 Dose 2, n=7,12
  6. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        2.1
        upper Limit
        91.3
        value
        13.9
      2. group Id
        OG001
        lower Limit
        67.3
        upper Limit
        217
        value
        121
    title
    Ctrough, Course 1 Dose 3, n=11,19
  7. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        4.3
        upper Limit
        128
        value
        23.4
      2. group Id
        OG001
        lower Limit
        95.3
        upper Limit
        344
        value
        181
    title
    Ctrough, Course 1 Dose 4, n=13,21
  8. categories
    1. measurements
      1. comment
        No participants were analyzed at the indicated time point; therefore, the mean and the CI could not be calculated.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. group Id
        OG001
        lower Limit
        127
        upper Limit
        489
        value
        249
    title
    Ctrough, Course 1 Dose 5, n=0,18
  9. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        33.1
        upper Limit
        85.6
        value
        53.2
      2. group Id
        OG001
        lower Limit
        42.8
        upper Limit
        98.2
        value
        64.8
    title
    Cmax, Course 2 Dose 1, n=9,11
  10. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        420
        upper Limit
        730
        value
        554
      2. group Id
        OG001
        lower Limit
        436
        upper Limit
        762
        value
        577
    title
    Cmax, Course 2 Dose 3, n=8,12
  11. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        339
        upper Limit
        825
        value
        528
      2. group Id
        OG001
        lower Limit
        616
        upper Limit
        1046
        value
        803
    title
    Cmax, Course 2 Dose 5, n=10,12
  12. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        1.2
        upper Limit
        52.7
        value
        8.1
      2. group Id
        OG001
        lower Limit
        4.7
        upper Limit
        89.2
        value
        20.4
    title
    Ctrough, Course 2 Dose 2, n=7,10
denoms
  1. counts
    1. group Id
      OG000
      value
      15
    2. group Id
      OG001
      value
      21
    units
    Participants
description
Cmax is defined as the maximum observed drug concentration after administration, and Ctrough is defined as the drug concentration observed prior to the start of the next dose. Blood samples for the quantification of ofatumumab were collected during each cycle and for up to 6 months after the end of each cycle.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received ofatumumab intravenously (IV) in Cycle 1 (defined as a treatment period of up to 4 weeks \[Weeks (Wk.) 1 through 4\]) (300 milligrams \[mg\] at Week 1 and 1000 mg at Weeks 2 through 4) and were followed up for 11 weeks (Weeks 5-16). After Week 16, during the Redosing Cycle (RC), participants who had Minor Response or stable disease after Cycle 1 and had not received another Waldenstrom's Macroglobulinemia (WM) therapy received 300 mg IV ofatumumab at Week 1 and 2000 mg IV ofatumumab at Weeks 2 through 5. Participants who achieved a response in either Cycle 1 or the RC and subsequently progressed before 36 months entered Cycle 2 of treatment and received IV ofatumumab 300 mg at Week 1 and IV ofatumumab 2000 mg during Weeks 2 through 5.
    id
    OG000
    title
    300 mg Ofatumumab, Wk. 1; 1000/2000 mg Ofatumumab, Wk. 2-4/2-5
  2. description
    Participants received ofatumumab IV at 300 mg at Week 1 and 2000 mg at Weeks 2 through 5 in Cycle 1 (defined as a treatment period of up to 5 weeks \[Weeks 1 through 5\]) and were followed up for 10 weeks (Weeks 6-16). After Week 16, during the RC, participants who had Minor Response or stable disease after Cycle 1 and had not received another WM therapy received 300 mg IV ofatumumab at Week 1 and 2000 mg IV ofatumumab at Weeks 2 through 5. Participants who achieved a response and subsequently progressed before 36 months entered Cycle 2 of treatment and received 300 mg at Week 1 and 2000 mg during Weeks 2 through 5.
    id
    OG001
    title
    300 mg Ofatumumab, Wk. 1; 2000 mg Ofatumumab, Wk. 2-5
param Type
GEOMETRIC_MEAN
population Description
PK Population. Data were provided for the number of participants attending each visit for whom the parameter could be determined.
reporting Status
POSTED
time Frame
From the first dose (Cycle 1 Day 1) up to 6 months after the end of the last cycle of treatment; blood collected on each dosing day, weekly up to Week 8, and every 4 weeks up to Week 24/Month 7
title
Cmax and Ctrough of Ofatumumab
type
SECONDARY
unit Of Measure
micrograms/milliliter (µg/ml)

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Preserved source evidence · Not medical advice