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NCT00422383 · OUTCOME

Maximum Observed Serum Concentrations Following the 2nd Infusion of Rituximab (Csecond) in the 1st and 2nd Courses of Treatment in µg/mL

A Study of Retreatment With MabThera (Rituximab) in Combination With Methotrexate in Patients With Rheumatoid Arthritis (RA) · Source last updated 2015-05-04

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

Measure
MEAN
Unit
µg/mL
Interval / dispersion
Standard Deviation
Time frame
Days 1 and 15 (before infusion and 30 minutes following infusion) and Weeks 4, 8, 16, 24, 26, 28, 32, 40, and 48 or early withdrawal and at Weeks 24 and 48 of safety follow-up (1 year period following the completion of study treatment).

What was measured

Csecond values were estimated from rituximab serum concentrations by non-compartmental methods using the software WinNonlin Enterprise Version 5.2.

Analysis population: ITT-M2 population, n = number of participants assessed for the given parameter at the specified timepoint.

Groups in this outcome

Rituximab Low Dose + Methotrexate

Participants received rituximab, 0.5 g, IV, on Days 1, 15, 168, and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.

Rituximab Escalated Dose + Methotrexate

Participants received rituximab, 0.5 g, IV, on Days 1 and 15 and 1.0 g, IV, on Days 168 and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.

Rituximab High Dose + Methotrexate

Participants received rituximab, 1.0 g, IV, on Days 1, 15, 168, and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.

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

Analysis denominator · Participants

GroupSource count
Rituximab Low Dose + Methotrexate130
Rituximab Escalated Dose + Methotrexate116
Rituximab High Dose + Methotrexate90

Reported measurements

First course (n=130,116,90)
Values in µg/mL · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Rituximab Low Dose + Methotrexate19465Not reportedNot reportedNot reported
Rituximab Escalated Dose + Methotrexate19057Not reportedNot reportedNot reported
Rituximab High Dose + Methotrexate373116Not reportedNot reportedNot reported
Second course (n=121,107,88)
Values in µg/mL · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Rituximab Low Dose + Methotrexate20970Not reportedNot reportedNot reported
Rituximab Escalated Dose + Methotrexate380139Not reportedNot reportedNot reported
Rituximab High Dose + Methotrexate392123Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        65
        value
        194
      2. group Id
        OG001
        spread
        57
        value
        190
      3. group Id
        OG002
        spread
        116
        value
        373
    title
    First course (n=130,116,90)
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        70
        value
        209
      2. group Id
        OG001
        spread
        139
        value
        380
      3. group Id
        OG002
        spread
        123
        value
        392
    title
    Second course (n=121,107,88)
denoms
  1. counts
    1. group Id
      OG000
      value
      130
    2. group Id
      OG001
      value
      116
    3. group Id
      OG002
      value
      90
    units
    Participants
description
Csecond values were estimated from rituximab serum concentrations by non-compartmental methods using the software WinNonlin Enterprise Version 5.2.
dispersion Type
Standard Deviation
groups
  1. description
    Participants received rituximab, 0.5 g, IV, on Days 1, 15, 168, and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.
    id
    OG000
    title
    Rituximab Low Dose + Methotrexate
  2. description
    Participants received rituximab, 0.5 g, IV, on Days 1 and 15 and 1.0 g, IV, on Days 168 and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.
    id
    OG001
    title
    Rituximab Escalated Dose + Methotrexate
  3. description
    Participants received rituximab, 1.0 g, IV, on Days 1, 15, 168, and 182. Participants also received methylprednisolone 100 mg, IV, by slow infusion, which was completed at least 30 minutes prior to each infusion of rituximab Days 1, 15, 168, and 182. Participants also received methotrexate 10-25 mg/mL, PO or parenterally, as prescribed by the treating physician and in accordance with the local label. Participants also received a stable dose of folate ≥ 5 mg/week given either as a single dose or as a divided weekly dose.
    id
    OG002
    title
    Rituximab High Dose + Methotrexate
param Type
MEAN
population Description
ITT-M2 population, n = number of participants assessed for the given parameter at the specified timepoint.
reporting Status
POSTED
time Frame
Days 1 and 15 (before infusion and 30 minutes following infusion) and Weeks 4, 8, 16, 24, 26, 28, 32, 40, and 48 or early withdrawal and at Weeks 24 and 48 of safety follow-up (1 year period following the completion of study treatment).
title
Maximum Observed Serum Concentrations Following the 2nd Infusion of Rituximab (Csecond) in the 1st and 2nd Courses of Treatment in µg/mL
type
SECONDARY
unit Of Measure
µg/mL

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Preserved source evidence · Not medical advice