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NCT03041311 · OUTCOME

Duration of Study Drug Exposure (Induction Period and Maintenance Period)

Carboplatin, Etoposide, and Atezolizumab With or Without Trilaciclib (G1T28), a CDK4/6 Inhibitor, in Extensive-Stage SCLC · Source last updated 2025-09-25

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

Measure
MEAN
Unit
Days
Interval / dispersion
Standard Deviation
Time frame
From date of first dose, up to four 21-day cycles of Induction therapy, followed by 21 day cycles of Maintenance therapy until disease progression, unacceptable toxicity or discontinuation by the patient or investigator, assessed up to 1162 days.

What was measured

Induction period duration of exposure (days) = Day 1 of last induction cycle - Cycle 1 Day 1 of induction phase + 21. Maintenance period duration of exposure (days) = Day 1 of the last maintenance cycle -Cycle 1 Day 1 of maintenance phase + 21.

Analysis population: Safety analysis

Groups in this outcome

Trilaciclib+Etoposide/Carboplatin/Atezolizumab

Induction: Patients received trilaciclib 240 mg/m² administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle. Maintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator.

Placebo+Etoposide/Carboplatin/Atezolizumab

Induction: Patients received placebo administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle. Maintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator.

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

Analysis denominator · Participants

GroupSource count
Trilaciclib+Etoposide/Carboplatin/Atezolizumab52
Placebo+Etoposide/Carboplatin/Atezolizumab53

Reported measurements

Induction Period

Analysis denominator · Participants

GroupSource count
Trilaciclib+Etoposide/Carboplatin/Atezolizumab52
Placebo+Etoposide/Carboplatin/Atezolizumab53
Values in Days · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Trilaciclib+Etoposide/Carboplatin/Atezolizumab8315.6Not reportedNot reportedNot reported
Placebo+Etoposide/Carboplatin/Atezolizumab8820.5Not reportedNot reportedNot reported
Maintenance Period

Analysis denominator · Participants

GroupSource count
Trilaciclib+Etoposide/Carboplatin/Atezolizumab41
Placebo+Etoposide/Carboplatin/Atezolizumab47
Values in Days · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Trilaciclib+Etoposide/Carboplatin/Atezolizumab223253.3Not reportedNot reportedNot reported
Placebo+Etoposide/Carboplatin/Atezolizumab232271.0Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        15.6
        value
        83
      2. group Id
        OG001
        spread
        20.5
        value
        88
    denoms
    1. counts
      1. group Id
        OG000
        value
        52
      2. group Id
        OG001
        value
        53
      units
      Participants
    title
    Induction Period
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        253.3
        value
        223
      2. group Id
        OG001
        spread
        271.0
        value
        232
    denoms
    1. counts
      1. group Id
        OG000
        value
        41
      2. group Id
        OG001
        value
        47
      units
      Participants
    title
    Maintenance Period
denoms
  1. counts
    1. group Id
      OG000
      value
      52
    2. group Id
      OG001
      value
      53
    units
    Participants
description
Induction period duration of exposure (days) = Day 1 of last induction cycle - Cycle 1 Day 1 of induction phase + 21. Maintenance period duration of exposure (days) = Day 1 of the last maintenance cycle -Cycle 1 Day 1 of maintenance phase + 21.
dispersion Type
Standard Deviation
groups
  1. description
    Induction: Patients received trilaciclib 240 mg/m² administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle. Maintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator.
    id
    OG000
    title
    Trilaciclib+Etoposide/Carboplatin/Atezolizumab
  2. description
    Induction: Patients received placebo administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle. Maintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator.
    id
    OG001
    title
    Placebo+Etoposide/Carboplatin/Atezolizumab
param Type
MEAN
population Description
Safety analysis
reporting Status
POSTED
time Frame
From date of first dose, up to four 21-day cycles of Induction therapy, followed by 21 day cycles of Maintenance therapy until disease progression, unacceptable toxicity or discontinuation by the patient or investigator, assessed up to 1162 days.
title
Duration of Study Drug Exposure (Induction Period and Maintenance Period)
type
SECONDARY
unit Of Measure
Days

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Preserved source evidence · Not medical advice