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NCT05091567 · OUTCOME

Randomized Phase: Percentage of Participants With PFS Determined by Investigator at 6 Months and 12 Months

A Phase III, Open-Label Study of Maintenance Lurbinectedin in Combination With Atezolizumab Compared With Atezolizumab in Participants With Extensive-Stage Small-Cell Lung Cancer · Source last updated 2026-09-09

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
Months 6 and 12

What was measured

PFS rate at 6 months and 12 months was defined as the percentage of participants who had not experienced PD as determined by the investigator according to RECIST v1.1 or death from any cause at 6 months and 12 months after randomization. PD was defined as appearance of a new lesion(s), unequivocal progression in non-target lesion(s) or at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Percentages have been rounded off.

Analysis population: FAS included all participants randomized into the randomized phase, regardless of whether or not the assigned study treatment was received.

Groups in this outcome

Atezolizumab

Participants received atezolizumab, 1200 mg, Q3W as IV infusion on Day 1 of each 21-day cycle until unacceptable toxicity or PD whichever occurred first.

Atezolizumab+ Lurbinectedin

Participants received atezolizumab, 1200 mg, Q3W as IV infusion and lurbinectedin, 3.2 mg/m\^2, Q3W as IV infusion on Day 1 of each 21-day cycle until unacceptable toxicity or PD whichever occurred first.

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

Analysis denominator · Participants

GroupSource count
Atezolizumab241
Atezolizumab+ Lurbinectedin242

Reported measurements

6 Months
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Atezolizumab22.5617.1217.1228.00Not reported
Atezolizumab+ Lurbinectedin46.2139.6039.6052.81Not reported
12 Months
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Atezolizumab12.808.078.0717.52Not reported
Atezolizumab+ Lurbinectedin20.3214.3314.3326.32Not reported

Source statistical analyses

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

  1. ci Lower Limit
    15.09
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    32.20
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Difference in Event Free Rate
    param Value
    23.65
  2. ci Lower Limit
    -0.11
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    15.16
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Difference in Event Free Rate
    param Value
    7.53
Complete source fields
analyses
  1. ci Lower Limit
    15.09
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    32.20
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Difference in Event Free Rate
    param Value
    23.65
  2. ci Lower Limit
    -0.11
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    15.16
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Difference in Event Free Rate
    param Value
    7.53
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        17.12
        spread
        17.12
        upper Limit
        28.00
        value
        22.56
      2. group Id
        OG001
        lower Limit
        39.60
        spread
        39.60
        upper Limit
        52.81
        value
        46.21
    title
    6 Months
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        8.07
        spread
        8.07
        upper Limit
        17.52
        value
        12.80
      2. group Id
        OG001
        lower Limit
        14.33
        spread
        14.33
        upper Limit
        26.32
        value
        20.32
    title
    12 Months
denoms
  1. counts
    1. group Id
      OG000
      value
      241
    2. group Id
      OG001
      value
      242
    units
    Participants
description
PFS rate at 6 months and 12 months was defined as the percentage of participants who had not experienced PD as determined by the investigator according to RECIST v1.1 or death from any cause at 6 months and 12 months after randomization. PD was defined as appearance of a new lesion(s), unequivocal progression in non-target lesion(s) or at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Percentages have been rounded off.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received atezolizumab, 1200 mg, Q3W as IV infusion on Day 1 of each 21-day cycle until unacceptable toxicity or PD whichever occurred first.
    id
    OG000
    title
    Atezolizumab
  2. description
    Participants received atezolizumab, 1200 mg, Q3W as IV infusion and lurbinectedin, 3.2 mg/m\^2, Q3W as IV infusion on Day 1 of each 21-day cycle until unacceptable toxicity or PD whichever occurred first.
    id
    OG001
    title
    Atezolizumab+ Lurbinectedin
param Type
NUMBER
population Description
FAS included all participants randomized into the randomized phase, regardless of whether or not the assigned study treatment was received.
reporting Status
POSTED
time Frame
Months 6 and 12
title
Randomized Phase: Percentage of Participants With PFS Determined by Investigator at 6 Months and 12 Months
type
SECONDARY
unit Of Measure
percentage of participants

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Preserved source evidence · Not medical advice