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NCT01649856 · OUTCOME

Percentage of Participants With Complete Response (CR) or Complete Response Unconfirmed (CRu)

A Study of Subcutaneous Versus Intravenous MabThera/Rituxan (Rituximab) in Combination With CHOP Chemotherapy in Patients With Previously Untreated CD20-Positive Diffuse Large B-Cell Lymphoma · Source last updated 2017-10-11

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

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
Up to approximately 4.25 years

What was measured

Tumor response was assessed per criteria published by Cheson et al (1999). According to consensus recommendations, CR was defined as complete disappearance of all clinical and radiographic evidence of disease and disease-related symptoms, regression of lymph nodes to normal size, absence of splenomegaly, and absence of bone marrow involvement. CRu was defined as disappearance of clinical and radiographic evidence of disease and absence of splenomegaly, with regression of lymph nodes by greater than (\>) 75 percent (%) but still \>1.5 centimeters (cm) in size, and indeterminate bone marrow assessment. The percentage of participants with either response at the end of induction (EOI) was determined with corresponding 95% Pearson-Clopper confidence interval (CI).

Analysis population: Intent-to-Treat (ITT) Population: All participants who completed Baseline and at least one on-treatment efficacy assessment.

Groups in this outcome

Rituximab SC

Participants with previously untreated, CD20-positive DLBCL received up to 8 cycles of rituximab in combination with CHOP. Treatment was given on Day 1 of each cycle, and the cycle length (14 or 21 days) was decided by the study center. For Cycle 1, rituximab was administered at a dose of 375 mg/m\^2 via IV infusion; subsequent doses were given as 1400 mg via SC injection. Tumor response was assessed after 4 cycles according to criteria published by Cheson et al (1999), which are presented in Outcome Measure 1. The duration of CHOP therapy could be reduced from 8 to 6 cycles for those who achieved CR or CRu after 4 cycles, but all participants received a full 8 cycles of rituximab.

Rituximab IV

Participants with previously untreated, CD20-positive DLBCL received up to 8 cycles of rituximab in combination with CHOP. Treatment was given on Day 1 of each cycle, and the cycle length (14 or 21 days) was decided by the study center. For all cycles, rituximab was administered at a dose of 375 mg/m\^2 via IV infusion. Tumor response was assessed after 4 cycles according to criteria published by Cheson et al (1999), which are presented in Outcome Measure 1. The duration of CHOP therapy could be reduced from 8 to 6 cycles for those who achieved CR or CRu after 4 cycles, but all participants received a full 8 cycles of rituximab.

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 SC342
Rituximab IV177

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Rituximab SC50.6Not reported45.256.0Not reported
Rituximab IV42.4Not reported35.050.0Not reported

Source statistical analyses

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

  1. ci Lower Limit
    -1.1
    ci Pct Value
    95
    ci Upper Limit
    17.5
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.076
    param Type
    Difference in Response Rates
    param Value
    8.2
    statistical Method
    Chi-squared
Complete source fields
analyses
  1. ci Lower Limit
    -1.1
    ci Pct Value
    95
    ci Upper Limit
    17.5
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.076
    param Type
    Difference in Response Rates
    param Value
    8.2
    statistical Method
    Chi-squared
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        45.2
        upper Limit
        56.0
        value
        50.6
      2. group Id
        OG001
        lower Limit
        35.0
        upper Limit
        50.0
        value
        42.4
denoms
  1. counts
    1. group Id
      OG000
      value
      342
    2. group Id
      OG001
      value
      177
    units
    Participants
description
Tumor response was assessed per criteria published by Cheson et al (1999). According to consensus recommendations, CR was defined as complete disappearance of all clinical and radiographic evidence of disease and disease-related symptoms, regression of lymph nodes to normal size, absence of splenomegaly, and absence of bone marrow involvement. CRu was defined as disappearance of clinical and radiographic evidence of disease and absence of splenomegaly, with regression of lymph nodes by greater than (\>) 75 percent (%) but still \>1.5 centimeters (cm) in size, and indeterminate bone marrow assessment. The percentage of participants with either response at the end of induction (EOI) was determined with corresponding 95% Pearson-Clopper confidence interval (CI).
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with previously untreated, CD20-positive DLBCL received up to 8 cycles of rituximab in combination with CHOP. Treatment was given on Day 1 of each cycle, and the cycle length (14 or 21 days) was decided by the study center. For Cycle 1, rituximab was administered at a dose of 375 mg/m\^2 via IV infusion; subsequent doses were given as 1400 mg via SC injection. Tumor response was assessed after 4 cycles according to criteria published by Cheson et al (1999), which are presented in Outcome Measure 1. The duration of CHOP therapy could be reduced from 8 to 6 cycles for those who achieved CR or CRu after 4 cycles, but all participants received a full 8 cycles of rituximab.
    id
    OG000
    title
    Rituximab SC
  2. description
    Participants with previously untreated, CD20-positive DLBCL received up to 8 cycles of rituximab in combination with CHOP. Treatment was given on Day 1 of each cycle, and the cycle length (14 or 21 days) was decided by the study center. For all cycles, rituximab was administered at a dose of 375 mg/m\^2 via IV infusion. Tumor response was assessed after 4 cycles according to criteria published by Cheson et al (1999), which are presented in Outcome Measure 1. The duration of CHOP therapy could be reduced from 8 to 6 cycles for those who achieved CR or CRu after 4 cycles, but all participants received a full 8 cycles of rituximab.
    id
    OG001
    title
    Rituximab IV
param Type
NUMBER
population Description
Intent-to-Treat (ITT) Population: All participants who completed Baseline and at least one on-treatment efficacy assessment.
reporting Status
POSTED
time Frame
Up to approximately 4.25 years
title
Percentage of Participants With Complete Response (CR) or Complete Response Unconfirmed (CRu)
type
PRIMARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice