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NCT01564784 · OUTCOME

Percentage of Participants Who Had a Hematopoietic Stem-Cell Transplant (HSCT)

A Study Of Inotuzumab Ozogamicin Versus Investigator's Choice Of Chemotherapy In Patients With Relapsed Or Refractory Acute Lymphoblastic Leukemia · Source last updated 2019-01-09

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 19 weeks from last dose

What was measured

HSCT rate was defined as the percentage of participants who underwent SCT following treatment with inotuzumab ozogamicin or Investigator's choice of chemotherapy.

Analysis population: ITT population. Although only 143 participants were treated in the Defined Investigator's Choice of Chemotherapy arm, all 162 randomized participants were included in the ITT population.

Groups in this outcome

Inotuzumab Ozogamicin

Participants were treated with inotuzumab ozogamicin at a starting dose of 1.8 mg/m\^2 (according to body surface area) per cycle with a divided-dose regimen using 3 weekly administrations. Participants received 0.8 mg/m\^2/cycle on Week 1 (Day 1), followed by 0.5 mg/m\^2 on Week 2 (Day 8) and Week 3 (Day 15) of a 21-day cycle, and administered as an intravenous infusion over 60 minutes. For participants who achieved a CR or CRi, or to allow recovery from toxicity, the length of Cycle 1 could be extended up to 28 days (ie, 1 week treatment-free interval starting on Day 21). For participants who achieved CR or CRi, the inotuzumab ozogamicin dose administered on Week 1 was reduced to 0.5 mg/m\^2 (for a total cycle dose of 1.5 mg/m\^2/cycle) for Cycles 2 through 6 (maximum number of cycles permitted). For Cycles 2 through 6, the cycle length was 28 days for all participants (regardless of remission status).

Defined Investigator's Choice of Chemotherapy

Participants received fludarabine, cytarabine, granulocyte-colony stimulating factor (FLAG), mitoxantrone + cytarabine (MXN/Ara-C), or high-dose cytarabine (HIDAC), according to the Investigator's choice.

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

Analysis denominator · Participants

GroupSource count
Inotuzumab Ozogamicin164
Defined Investigator's Choice of Chemotherapy162

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Inotuzumab Ozogamicin42.7Not reported35.050.6Not reported
Defined Investigator's Choice of Chemotherapy11.1Not reported6.717.0Not reported

Source statistical analyses

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

  1. ci Lower Limit
    22.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    40.6
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    <0.0001
    param Type
    Rate difference
    param Value
    31.6
    statistical Comment
    If any cell count was \<5, p-value was based on Fisher's exact test
    statistical Method
    1-sided p-value based on Chi-square test
Complete source fields
analyses
  1. ci Lower Limit
    22.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    40.6
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    <0.0001
    param Type
    Rate difference
    param Value
    31.6
    statistical Comment
    If any cell count was \<5, p-value was based on Fisher's exact test
    statistical Method
    1-sided p-value based on Chi-square test
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        35.0
        upper Limit
        50.6
        value
        42.7
      2. group Id
        OG001
        lower Limit
        6.7
        upper Limit
        17.0
        value
        11.1
denoms
  1. counts
    1. group Id
      OG000
      value
      164
    2. group Id
      OG001
      value
      162
    units
    Participants
description
HSCT rate was defined as the percentage of participants who underwent SCT following treatment with inotuzumab ozogamicin or Investigator's choice of chemotherapy.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants were treated with inotuzumab ozogamicin at a starting dose of 1.8 mg/m\^2 (according to body surface area) per cycle with a divided-dose regimen using 3 weekly administrations. Participants received 0.8 mg/m\^2/cycle on Week 1 (Day 1), followed by 0.5 mg/m\^2 on Week 2 (Day 8) and Week 3 (Day 15) of a 21-day cycle, and administered as an intravenous infusion over 60 minutes. For participants who achieved a CR or CRi, or to allow recovery from toxicity, the length of Cycle 1 could be extended up to 28 days (ie, 1 week treatment-free interval starting on Day 21). For participants who achieved CR or CRi, the inotuzumab ozogamicin dose administered on Week 1 was reduced to 0.5 mg/m\^2 (for a total cycle dose of 1.5 mg/m\^2/cycle) for Cycles 2 through 6 (maximum number of cycles permitted). For Cycles 2 through 6, the cycle length was 28 days for all participants (regardless of remission status).
    id
    OG000
    title
    Inotuzumab Ozogamicin
  2. description
    Participants received fludarabine, cytarabine, granulocyte-colony stimulating factor (FLAG), mitoxantrone + cytarabine (MXN/Ara-C), or high-dose cytarabine (HIDAC), according to the Investigator's choice.
    id
    OG001
    title
    Defined Investigator's Choice of Chemotherapy
param Type
NUMBER
population Description
ITT population. Although only 143 participants were treated in the Defined Investigator's Choice of Chemotherapy arm, all 162 randomized participants were included in the ITT population.
reporting Status
POSTED
time Frame
Up to 19 weeks from last dose
title
Percentage of Participants Who Had a Hematopoietic Stem-Cell Transplant (HSCT)
type
SECONDARY
unit Of Measure
Percentage of Participants

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Preserved source evidence · Not medical advice