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NCT00636168 · OUTCOME

Recurrence-Free Survival (RFS) Rates Per IRC at 1 Year, 2 Years, and 3 Years in the ITT Population

Efficacy Study of Ipilimumab Versus Placebo to Prevent Recurrence After Complete Resection of High Risk Stage III Melanoma · Source last updated 2019-12-17

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
At years 1, 2, and 3

What was measured

Yearly recurrence-free survival rates, eg. at 1 year, defined as the probability that a participant was recurrence-free at 1 year following randomization, were estimated for each treatment group using the Kaplan-Meier product-limit method, along with their corresponding log-log transformed 95% confidence intervals. RFS was defined as the time between the date of randomization and the date of first recurrence or death (whatever the cause), whichever occurred first. A participant who died without reported recurrence was considered to have recurrence on the date of death. For those who remained alive and recurrence-free, RFS was censored on the date of last evaluable post-randomization tumor assessment. For those who remained alive and had no recorded post-randomization tumor assessment, RFS was censored on the day of randomization. Participants with disease at baseline were considered to have an event on the day of randomization. CT and MRI were mandatory to establish recurrence.

Analysis population: Intent-to-treat population: All randomized participants, analyzed in the arm to which they were allocated by randomization

Groups in this outcome

Ipilimumab 10mg/kg

Ipilimumab (10 mg/kg) as a single dose via a 90 minute intravenous (IV) infusion (not as bolus or IV push) during Days 1, 22, 43 and 64 (every 21 days in the Induction Phase) for a total of four separate doses, until disease recurrence, unacceptable toxicity or withdrawal of consent. During the maintenance phase, Ipilimumab was administered at a dose of 10 mg/kg, by IV infusion, every 12 weeks, beginning at Week 24, until disease recurrence, unacceptable toxicity or withdrawal of consent, for a maximum of 3 years (Week 156).

Placebo

Placebo as a single dose via a 90 minute intravenous (IV) infusion (not as bolus or IV push) during Days 1, 22, 43 and 64 (Induction Phase) for a total of four separate doses, until disease recurrence, unacceptable toxicity or withdrawal of consent. During the maintenance phase, placebo was administered by IV infusion every 12 weeks, beginning at Week 24, until disease recurrence, unacceptable toxicity or withdrawal of consent, for a maximum of 3 years (Week 156).

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

Analysis denominator · Participants

GroupSource count
Ipilimumab 10mg/kg475
Placebo476

Reported measurements

RFS Rate at 1 Year
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Ipilimumab 10mg/kg63.50Not reported58.8967.74Not reported
Placebo56.13Not reported51.5260.47Not reported
RFS Rate at 2 Years
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Ipilimumab 10mg/kg51.45Not reported46.6956.00Not reported
Placebo43.83Not reported39.2748.28Not reported
RFS Rate at 3 Years
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Ipilimumab 10mg/kg46.48Not reported41.4651.34Not reported
Placebo34.79Not reported30.1239.50Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        58.89
        upper Limit
        67.74
        value
        63.50
      2. group Id
        OG001
        lower Limit
        51.52
        upper Limit
        60.47
        value
        56.13
    title
    RFS Rate at 1 Year
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        46.69
        upper Limit
        56.00
        value
        51.45
      2. group Id
        OG001
        lower Limit
        39.27
        upper Limit
        48.28
        value
        43.83
    title
    RFS Rate at 2 Years
  3. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        41.46
        upper Limit
        51.34
        value
        46.48
      2. group Id
        OG001
        lower Limit
        30.12
        upper Limit
        39.50
        value
        34.79
    title
    RFS Rate at 3 Years
denoms
  1. counts
    1. group Id
      OG000
      value
      475
    2. group Id
      OG001
      value
      476
    units
    Participants
description
Yearly recurrence-free survival rates, eg. at 1 year, defined as the probability that a participant was recurrence-free at 1 year following randomization, were estimated for each treatment group using the Kaplan-Meier product-limit method, along with their corresponding log-log transformed 95% confidence intervals. RFS was defined as the time between the date of randomization and the date of first recurrence or death (whatever the cause), whichever occurred first. A participant who died without reported recurrence was considered to have recurrence on the date of death. For those who remained alive and recurrence-free, RFS was censored on the date of last evaluable post-randomization tumor assessment. For those who remained alive and had no recorded post-randomization tumor assessment, RFS was censored on the day of randomization. Participants with disease at baseline were considered to have an event on the day of randomization. CT and MRI were mandatory to establish recurrence.
dispersion Type
95% Confidence Interval
groups
  1. description
    Ipilimumab (10 mg/kg) as a single dose via a 90 minute intravenous (IV) infusion (not as bolus or IV push) during Days 1, 22, 43 and 64 (every 21 days in the Induction Phase) for a total of four separate doses, until disease recurrence, unacceptable toxicity or withdrawal of consent. During the maintenance phase, Ipilimumab was administered at a dose of 10 mg/kg, by IV infusion, every 12 weeks, beginning at Week 24, until disease recurrence, unacceptable toxicity or withdrawal of consent, for a maximum of 3 years (Week 156).
    id
    OG000
    title
    Ipilimumab 10mg/kg
  2. description
    Placebo as a single dose via a 90 minute intravenous (IV) infusion (not as bolus or IV push) during Days 1, 22, 43 and 64 (Induction Phase) for a total of four separate doses, until disease recurrence, unacceptable toxicity or withdrawal of consent. During the maintenance phase, placebo was administered by IV infusion every 12 weeks, beginning at Week 24, until disease recurrence, unacceptable toxicity or withdrawal of consent, for a maximum of 3 years (Week 156).
    id
    OG001
    title
    Placebo
param Type
NUMBER
population Description
Intent-to-treat population: All randomized participants, analyzed in the arm to which they were allocated by randomization
reporting Status
POSTED
time Frame
At years 1, 2, and 3
title
Recurrence-Free Survival (RFS) Rates Per IRC at 1 Year, 2 Years, and 3 Years in the ITT Population
type
PRIMARY
unit Of Measure
Percentage of participants

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