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NCT04154189 · OUTCOME

Progression-free Survival (PFS) by Independent Imaging Review (IIR) Assessment

A Study to Compare the Efficacy and Safety of Ifosfamide and Etoposide With or Without Lenvatinib in Children, Adolescents and Young Adults With Relapsed and Refractory Osteosarcoma · Source last updated 2024-07-22

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 the date of randomization to the date of the first documentation of PD or date of death, whichever occurred first (up to 20.5 months)

What was measured

PFS as assessed by IIR was defined as the time from the date of randomization to the date of the first documentation of PD or date of death (whichever occurred first), as determined using RECIST v1.1. PD was defined as at least a 20 percent (%) increase or 5 millimeter (mm) increase in the sum of diameters of target lesions (taking as reference the smallest sum on study) recorded since the treatment started or the appearance of 1 or more new lesions. PFS was analyzed using Kaplan-Meier method.

Analysis population: FAS included all randomized participants regardless of the treatment actually received.

Groups in this outcome

Treatment Arm A: Lenvatinib + Ifosfamide + Etoposide

Participants received lenvatinib 14 mg/m\^2, capsules, orally, once daily, plus ifosfamide 3000 mg/m\^2/day, intravenously and etoposide 100 mg/m\^2/day, intravenously. Ifosfamide and etoposide were administered on Days 1 to 3 of each 21-day cycle for up to 5 cycles. Lenvatinib was administered in continuous 21-day cycles. Treatment continued until PD, development of unacceptable toxicity, participant choice, withdrawal of consent or discontinuation of study by the sponsor, whichever occurred first.

Treatment Arm B: Ifosfamide + Etoposide

Participants received ifosfamide 3000 mg/m\^2/day, intravenously and etoposide 100 mg/m\^2/day, intravenously on Days 1 to 3 of each 21-day cycle for up to 5 cycles. Participants who had PD per RECIST v1.1 were eligible for an optional lenvatinib treatment (14 mg/m\^2, capsules, orally, once daily in continuous 21-day cycles until next PD, development of unacceptable toxicity, participant choice, withdrawal of consent or discontinuation of study by the sponsor, whichever occurred first) plus any remaining cycles of chemotherapy if 5 cycles were not completed prior to PD.

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

Analysis denominator · Participants

GroupSource count
Treatment Arm A: Lenvatinib + Ifosfamide + Etoposide40
Treatment Arm B: Ifosfamide + Etoposide41

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Treatment Arm A: Lenvatinib + Ifosfamide + Etoposide6.5Not reported5.78.2Not reported
Treatment Arm B: Ifosfamide + Etoposide5.5Not reported2.96.5Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.27
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.08
    estimate Comment
    Hazard ratio was based on Cox Proportional Hazard Model including treatment group as a factor and stratified by Age (less than \[\<\]18 years, more than or equal to \[\>=\]18 years) in interactive response technology (IRT). Efron method was used for ties.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0396
    p Value Comment
    One-sided P value
    param Type
    Hazard Ratio (HR)
    param Value
    0.54
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.27
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.08
    estimate Comment
    Hazard ratio was based on Cox Proportional Hazard Model including treatment group as a factor and stratified by Age (less than \[\<\]18 years, more than or equal to \[\>=\]18 years) in interactive response technology (IRT). Efron method was used for ties.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0396
    p Value Comment
    One-sided P value
    param Type
    Hazard Ratio (HR)
    param Value
    0.54
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        5.7
        upper Limit
        8.2
        value
        6.5
      2. group Id
        OG001
        lower Limit
        2.9
        upper Limit
        6.5
        value
        5.5
denoms
  1. counts
    1. group Id
      OG000
      value
      40
    2. group Id
      OG001
      value
      41
    units
    Participants
description
PFS as assessed by IIR was defined as the time from the date of randomization to the date of the first documentation of PD or date of death (whichever occurred first), as determined using RECIST v1.1. PD was defined as at least a 20 percent (%) increase or 5 millimeter (mm) increase in the sum of diameters of target lesions (taking as reference the smallest sum on study) recorded since the treatment started or the appearance of 1 or more new lesions. PFS was analyzed using Kaplan-Meier method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received lenvatinib 14 mg/m\^2, capsules, orally, once daily, plus ifosfamide 3000 mg/m\^2/day, intravenously and etoposide 100 mg/m\^2/day, intravenously. Ifosfamide and etoposide were administered on Days 1 to 3 of each 21-day cycle for up to 5 cycles. Lenvatinib was administered in continuous 21-day cycles. Treatment continued until PD, development of unacceptable toxicity, participant choice, withdrawal of consent or discontinuation of study by the sponsor, whichever occurred first.
    id
    OG000
    title
    Treatment Arm A: Lenvatinib + Ifosfamide + Etoposide
  2. description
    Participants received ifosfamide 3000 mg/m\^2/day, intravenously and etoposide 100 mg/m\^2/day, intravenously on Days 1 to 3 of each 21-day cycle for up to 5 cycles. Participants who had PD per RECIST v1.1 were eligible for an optional lenvatinib treatment (14 mg/m\^2, capsules, orally, once daily in continuous 21-day cycles until next PD, development of unacceptable toxicity, participant choice, withdrawal of consent or discontinuation of study by the sponsor, whichever occurred first) plus any remaining cycles of chemotherapy if 5 cycles were not completed prior to PD.
    id
    OG001
    title
    Treatment Arm B: Ifosfamide + Etoposide
param Type
MEDIAN
population Description
FAS included all randomized participants regardless of the treatment actually received.
reporting Status
POSTED
time Frame
From the date of randomization to the date of the first documentation of PD or date of death, whichever occurred first (up to 20.5 months)
title
Progression-free Survival (PFS) by Independent Imaging Review (IIR) Assessment
type
PRIMARY
unit Of Measure
months

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Preserved source evidence · Not medical advice