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NCT00424047 · OUTCOME

Kaplan-Meier Estimate of Duration of Response

A Study of CC-5013 Plus Dexamethasone Versus Dexamethasone Alone in Previously Treated Subjects With Multiple Myeloma · Source last updated 2017-10-19

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

Measure
MEDIAN
Unit
weeks
Interval / dispersion
95% Confidence Interval
Time frame
Up to data cut off of 03 August 2005; up to 24 months

What was measured

Duration of response was calculated for responders and defined as the time from the first observation of a response (e.g., the first time that the appropriate decrease in M-protein level was observed for confirmed responders) to the first documented progression or relapse. Response duration was censored at the last adequate assessment showing evidence of no progression.

Analysis population: Intent to Treat population includes all participants who were randomized to study drug.

Groups in this outcome

Lenalidomide Plus Dexamethasone

Lenalidomide 25 mg by mouth (PO) daily (QD) on Days 1 to 21 and a matching placebo capsule QD on Days 22 to 28 of each 28-day cycle. Dexamethasone 40mg PO QD on Days 1-4, 9-12, and 17-20 of each 28 day cycle for cycles 1 through 4. Beginning with Cycle 5, dexamethasone dosing schedule was reduced to 40mg PO QD on Days 1 to 4 every 28 days for the remaining cycles.

Placebo Plus Dexamethasone

Placebo PO daily on Days 1 to 28 of each 28 day cycle. Dexamethasone 40mg PO QD on Days 1-4, 9-12, and 17-20 of each 28-day cycle for Cycles 1 through 4. Beginning with Cycle 5, dexamethasone dosing schedule was reduced to 40mg PO QD for Days 1-4 every 28 days.

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

Analysis denominator · Participants

GroupSource count
Lenalidomide Plus Dexamethasone104
Placebo Plus Dexamethasone41

Reported measurements

Source class 1
Values in weeks · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Lenalidomide Plus Dexamethasone67.6Not reported42.1NANA: Data not considered materialized or estimable at this time point
Placebo Plus Dexamethasone33.3Not reported22.151.6Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.338
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.921
    estimate Comment
    Based on a proportional hazards model comparing the hazard functions associated with the treatment groups (lenalidomide/dexamethasone : placebo/dexamethasone).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.021
    param Type
    Hazard Ratio (HR)
    param Value
    0.558
    statistical Comment
    The p-value is based on an unstratified log rank test of survival curve differences between the treatment groups
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.338
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.921
    estimate Comment
    Based on a proportional hazards model comparing the hazard functions associated with the treatment groups (lenalidomide/dexamethasone : placebo/dexamethasone).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.021
    param Type
    Hazard Ratio (HR)
    param Value
    0.558
    statistical Comment
    The p-value is based on an unstratified log rank test of survival curve differences between the treatment groups
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. comment
        NA: Data not considered materialized or estimable at this time point
        group Id
        OG000
        lower Limit
        42.1
        upper Limit
        NA
        value
        67.6
      2. group Id
        OG001
        lower Limit
        22.1
        upper Limit
        51.6
        value
        33.3
denoms
  1. counts
    1. group Id
      OG000
      value
      104
    2. group Id
      OG001
      value
      41
    units
    Participants
description
Duration of response was calculated for responders and defined as the time from the first observation of a response (e.g., the first time that the appropriate decrease in M-protein level was observed for confirmed responders) to the first documented progression or relapse. Response duration was censored at the last adequate assessment showing evidence of no progression.
dispersion Type
95% Confidence Interval
groups
  1. description
    Lenalidomide 25 mg by mouth (PO) daily (QD) on Days 1 to 21 and a matching placebo capsule QD on Days 22 to 28 of each 28-day cycle. Dexamethasone 40mg PO QD on Days 1-4, 9-12, and 17-20 of each 28 day cycle for cycles 1 through 4. Beginning with Cycle 5, dexamethasone dosing schedule was reduced to 40mg PO QD on Days 1 to 4 every 28 days for the remaining cycles.
    id
    OG000
    title
    Lenalidomide Plus Dexamethasone
  2. description
    Placebo PO daily on Days 1 to 28 of each 28 day cycle. Dexamethasone 40mg PO QD on Days 1-4, 9-12, and 17-20 of each 28-day cycle for Cycles 1 through 4. Beginning with Cycle 5, dexamethasone dosing schedule was reduced to 40mg PO QD for Days 1-4 every 28 days.
    id
    OG001
    title
    Placebo Plus Dexamethasone
param Type
MEDIAN
population Description
Intent to Treat population includes all participants who were randomized to study drug.
reporting Status
POSTED
time Frame
Up to data cut off of 03 August 2005; up to 24 months
title
Kaplan-Meier Estimate of Duration of Response
type
POST_HOC
unit Of Measure
weeks

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Preserved source evidence · Not medical advice