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NCT01757535 · OUTCOME

Kaplan-Meier Estimate of Relapse Free Survival (RFS)

Efficacy of Oral Azacitidine Plus Best Supportive Care as Maintenance Therapy in Subjects With Acute Myeloid Leukemia (AML) in Complete Remission · Source last updated 2025-07-08

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

Measure
MEDIAN
Unit
Months
Interval / dispersion
95% Confidence Interval
Time frame
From day 1 (randomization) up to data cut off date of 06 August 2024; approximately 135.5 months

What was measured

RFS was defined as the time from the date of randomization to the date of documented relapse or death from any cause, whichever occurred first. Participants who were still alive without documented relapse, or who were lost to follow-up or withdrew consent without documented relapse, were censored at the date of their last bone marrow assessment, prior to receiving any other therapy for AML. Documented relapse was defined as the earliest date of the following: • ≥ 5% bone marrow blasts (myeloblasts) from Central Pathology report, or • appearance of \> 0% blasts in the peripheral blood with a later bone marrow confirmation (bone marrow blast \[myeloblasts\] ≥ 5%) within 100 days, or • at least 2 peripheral blasts ≥ 5% within 30 days.

Analysis population: The intent to treat population includes participants who were randomized, regardless of whether they received treatment or not.

Groups in this outcome

Oral Azacitidine Plus Best Supportive Care

Participants received 300 mg azacitidine tablets once a day (QD) for the first 14 days of each 28-day treatment cycle until discontinuation, which includes the following reasons: disease relapse, withdrawal of consent, adverse events, participant became eligible for allogeneic bone marrow or stem cell transplantation during the treatment period, death, lost to follow-up, or protocol violation or until the end of the study.

Placebo Plus Best Supportive Care

Participants received identically matching placebo tablets QD for the first 14 days of each 28-day treatment cycle until no longer receiving benefit, withdrawal of consent, disease relapse, adverse events, participant became eligible for allogeneic bone marrow or stem cell transplantation during the treatment period, lost to follow-up, or protocol violation or until the end of the study.

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

Analysis denominator · Participants

GroupSource count
Oral Azacitidine Plus Best Supportive Care238
Placebo Plus Best Supportive Care234

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Oral Azacitidine Plus Best Supportive Care10.2Not reported7.912.9Not reported
Placebo Plus Best Supportive Care4.8Not reported4.66.4Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.52
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.80
    estimate Comment
    The hazard ratio is from a Cox proportional hazards model stratified by age, cytogenetic risk category, and received consolidation therapy or not.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    < 0.0001
    p Value Comment
    The p-value is 2-sided from a log-rank test stratified by age, cytogenetic risk category, and received consolidation therapy or not.
    param Type
    Hazard Ratio (HR)
    param Value
    0.65
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.52
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.80
    estimate Comment
    The hazard ratio is from a Cox proportional hazards model stratified by age, cytogenetic risk category, and received consolidation therapy or not.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    < 0.0001
    p Value Comment
    The p-value is 2-sided from a log-rank test stratified by age, cytogenetic risk category, and received consolidation therapy or not.
    param Type
    Hazard Ratio (HR)
    param Value
    0.65
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.9
        upper Limit
        12.9
        value
        10.2
      2. group Id
        OG001
        lower Limit
        4.6
        upper Limit
        6.4
        value
        4.8
denoms
  1. counts
    1. group Id
      OG000
      value
      238
    2. group Id
      OG001
      value
      234
    units
    Participants
description
RFS was defined as the time from the date of randomization to the date of documented relapse or death from any cause, whichever occurred first. Participants who were still alive without documented relapse, or who were lost to follow-up or withdrew consent without documented relapse, were censored at the date of their last bone marrow assessment, prior to receiving any other therapy for AML. Documented relapse was defined as the earliest date of the following: • ≥ 5% bone marrow blasts (myeloblasts) from Central Pathology report, or • appearance of \> 0% blasts in the peripheral blood with a later bone marrow confirmation (bone marrow blast \[myeloblasts\] ≥ 5%) within 100 days, or • at least 2 peripheral blasts ≥ 5% within 30 days.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received 300 mg azacitidine tablets once a day (QD) for the first 14 days of each 28-day treatment cycle until discontinuation, which includes the following reasons: disease relapse, withdrawal of consent, adverse events, participant became eligible for allogeneic bone marrow or stem cell transplantation during the treatment period, death, lost to follow-up, or protocol violation or until the end of the study.
    id
    OG000
    title
    Oral Azacitidine Plus Best Supportive Care
  2. description
    Participants received identically matching placebo tablets QD for the first 14 days of each 28-day treatment cycle until no longer receiving benefit, withdrawal of consent, disease relapse, adverse events, participant became eligible for allogeneic bone marrow or stem cell transplantation during the treatment period, lost to follow-up, or protocol violation or until the end of the study.
    id
    OG001
    title
    Placebo Plus Best Supportive Care
param Type
MEDIAN
population Description
The intent to treat population includes participants who were randomized, regardless of whether they received treatment or not.
reporting Status
POSTED
time Frame
From day 1 (randomization) up to data cut off date of 06 August 2024; approximately 135.5 months
title
Kaplan-Meier Estimate of Relapse Free Survival (RFS)
type
SECONDARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice