Skip to content
← Full study record

NCT02514447 · OUTCOME

Duration of Severe (Grade 4) Neutropenia in Cycle 1

Trilaciclib (G1T28) in Patients With Previously Treated Extensive Stage SCLC Receiving Topotecan Chemotherapy · 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
Evaluated for Cycle 1 (i.e., from date of first dose of study drug (Part 1)/randomization (Part 2) to the end of Cycle 1, each cycle = 21 days)

What was measured

Duration of severe neutropenia (DSN; days) was defined as the number of days from the date of the first ANC value of \<0.5 × 10\^9/L observed between start of cycle and end of cycle to the date of the first ANC value ≥0.5 × 10\^9/L that met the following criteria: (1) occurred after the ANC value of \<0.5 × 10\^9/L and (2) no other ANC values \<0.5 × 10\^9/L occurred between this day and end of cycle. DSN is set to 0 for patients who did not experience SN in a cycle, including those who were randomized but never treated. Data from unscheduled visits and the actual assessment date (rather than visit date) were included in the derivation.

Analysis population: The intent-to-treat (ITT) analysis set: All enrolled patients who received at least one dose of study drugs in Part 1 and all randomized patients in Part 2 on the basis of the assigned treatment.

Groups in this outcome

Placebo + Topotecan 1.5 mg/m² - Parts 2a and 2b

Patients in Parts 2a and 2b were randomized 1:2 to placebo. Patients received placebo administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of placebo on Days 1 to 5, patients received IV topotecan (1.5 mg/m²). Placebo Topotecan

Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Part 2a

Patients in Part 2a were randomized 2:1 to trilaciclib. Patients received trilaciclib (240 mg/m²) administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²). Trilaciclib Topotecan

Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.5 mg/m² - Part 2b

Patients in Part 2b were randomized 2:1 to trilaciclib. Patients received trilaciclib (240 mg/m²) administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.5 mg/m²). Trilaciclib Topotecan

Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.5 mg/m² - Cohort 1- Part 1

Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.50 mg/m²).

Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.25 mg/m² - Cohort 2- Part 1

Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.25 mg/m²).

Trilaciclib (G1T28) 200 mg/m² + Topotecan 0.75 mg/m² - Cohort 3- Part 1

Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).

Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Cohorts 4 and 6- Part 1

Patients received trilaciclib (240 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).

Trilaciclib (G1T28) 280 mg/m² + Topotecan 0.75 mg/m² - Cohort 5- Part 1

Patients received trilaciclib (280 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).

Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.0 mg/m² - Cohort 7- Part 1

Patients received trilaciclib (240 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.0 mg/m²).

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

Analysis denominator · Participants

GroupSource count
Placebo + Topotecan 1.5 mg/m² - Parts 2a and 2b29
Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Part 2a30
Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.5 mg/m² - Part 2b32
Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.5 mg/m² - Cohort 1- Part 12
Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.25 mg/m² - Cohort 2- Part 13
Trilaciclib (G1T28) 200 mg/m² + Topotecan 0.75 mg/m² - Cohort 3- Part 14
Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Cohorts 4 and 6- Part 18
Trilaciclib (G1T28) 280 mg/m² + Topotecan 0.75 mg/m² - Cohort 5- Part 17
Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.0 mg/m² - Cohort 7- Part 18

Reported measurements

Source class 1
Values in days · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Placebo + Topotecan 1.5 mg/m² - Parts 2a and 2b86.0Not reportedNot reportedNot reported
Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Part 2a13.1Not reportedNot reportedNot reported
Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.5 mg/m² - Part 2b23.9Not reportedNot reportedNot reported
Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.5 mg/m² - Cohort 1- Part 1141.4Not reportedNot reportedNot reported
Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.25 mg/m² - Cohort 2- Part 186.8Not reportedNot reportedNot reported
Trilaciclib (G1T28) 200 mg/m² + Topotecan 0.75 mg/m² - Cohort 3- Part 100Not reportedNot reportedNot reported
Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Cohorts 4 and 6- Part 100Not reportedNot reportedNot reported
Trilaciclib (G1T28) 280 mg/m² + Topotecan 0.75 mg/m² - Cohort 5- Part 123.6Not reportedNot reportedNot reported
Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.0 mg/m² - Cohort 7- Part 135.5Not reportedNot reportedNot reported

Source statistical analyses

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

  1. group Description
    Analysis was for Part 2 data: Treatment difference was evaluated using a nonparametric analysis of covariance (ANCOVA). The nonparametric ANCOVA included study baseline ANC value as covariate, stratification factors of ECOG performance status (0 to 1 versus 2) and sensitivity to first line treatment (sensitive or resistant) and treatment as fixed effects.
    group Ids
    1. OG000
    2. OG002
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    p Value Comment
    A Hochberg-based gatekeeping procedure was used to control the global familywise error rate across the multiple null hypotheses (primary and key secondary myelosuppression efficacy endpoints) in a strong sense at a 1-sided 0.10 level.
    statistical Comment
    Hochberg-based gatekeeping procedure
    statistical Method
    non-parametric ANCOVA
Complete source fields
analyses
  1. group Description
    Analysis was for Part 2 data: Treatment difference was evaluated using a nonparametric analysis of covariance (ANCOVA). The nonparametric ANCOVA included study baseline ANC value as covariate, stratification factors of ECOG performance status (0 to 1 versus 2) and sensitivity to first line treatment (sensitive or resistant) and treatment as fixed effects.
    group Ids
    1. OG000
    2. OG002
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    p Value Comment
    A Hochberg-based gatekeeping procedure was used to control the global familywise error rate across the multiple null hypotheses (primary and key secondary myelosuppression efficacy endpoints) in a strong sense at a 1-sided 0.10 level.
    statistical Comment
    Hochberg-based gatekeeping procedure
    statistical Method
    non-parametric ANCOVA
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        6.0
        value
        8
      2. group Id
        OG001
        spread
        3.1
        value
        1
      3. group Id
        OG002
        spread
        3.9
        value
        2
      4. group Id
        OG003
        spread
        1.4
        value
        14
      5. group Id
        OG004
        spread
        6.8
        value
        8
      6. group Id
        OG005
        spread
        0
        value
        0
      7. group Id
        OG006
        spread
        0
        value
        0
      8. group Id
        OG007
        spread
        3.6
        value
        2
      9. group Id
        OG008
        spread
        5.5
        value
        3
denoms
  1. counts
    1. group Id
      OG000
      value
      29
    2. group Id
      OG001
      value
      30
    3. group Id
      OG002
      value
      32
    4. group Id
      OG003
      value
      2
    5. group Id
      OG004
      value
      3
    6. group Id
      OG005
      value
      4
    7. group Id
      OG006
      value
      8
    8. group Id
      OG007
      value
      7
    9. group Id
      OG008
      value
      8
    units
    Participants
description
Duration of severe neutropenia (DSN; days) was defined as the number of days from the date of the first ANC value of \<0.5 × 10\^9/L observed between start of cycle and end of cycle to the date of the first ANC value ≥0.5 × 10\^9/L that met the following criteria: (1) occurred after the ANC value of \<0.5 × 10\^9/L and (2) no other ANC values \<0.5 × 10\^9/L occurred between this day and end of cycle. DSN is set to 0 for patients who did not experience SN in a cycle, including those who were randomized but never treated. Data from unscheduled visits and the actual assessment date (rather than visit date) were included in the derivation.
dispersion Type
Standard Deviation
groups
  1. description
    Patients in Parts 2a and 2b were randomized 1:2 to placebo. Patients received placebo administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of placebo on Days 1 to 5, patients received IV topotecan (1.5 mg/m²). Placebo Topotecan
    id
    OG000
    title
    Placebo + Topotecan 1.5 mg/m² - Parts 2a and 2b
  2. description
    Patients in Part 2a were randomized 2:1 to trilaciclib. Patients received trilaciclib (240 mg/m²) administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²). Trilaciclib Topotecan
    id
    OG001
    title
    Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Part 2a
  3. description
    Patients in Part 2b were randomized 2:1 to trilaciclib. Patients received trilaciclib (240 mg/m²) administered IV once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.5 mg/m²). Trilaciclib Topotecan
    id
    OG002
    title
    Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.5 mg/m² - Part 2b
  4. description
    Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.50 mg/m²).
    id
    OG003
    title
    Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.5 mg/m² - Cohort 1- Part 1
  5. description
    Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.25 mg/m²).
    id
    OG004
    title
    Trilaciclib (G1T28) 200 mg/m² + Topotecan 1.25 mg/m² - Cohort 2- Part 1
  6. description
    Patients received trilaciclib (200 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).
    id
    OG005
    title
    Trilaciclib (G1T28) 200 mg/m² + Topotecan 0.75 mg/m² - Cohort 3- Part 1
  7. description
    Patients received trilaciclib (240 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).
    id
    OG006
    title
    Trilaciclib (G1T28) 240 mg/m² + Topotecan 0.75 mg/m² - Cohorts 4 and 6- Part 1
  8. description
    Patients received trilaciclib (280 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (0.75 mg/m²).
    id
    OG007
    title
    Trilaciclib (G1T28) 280 mg/m² + Topotecan 0.75 mg/m² - Cohort 5- Part 1
  9. description
    Patients received trilaciclib (240 mg/m²) administered intravenously (IV) once daily on Days 1 to 5 of each 21-day topotecan chemotherapy cycle. Following administration of trilaciclib on Days 1 to 5, patients received IV topotecan (1.0 mg/m²).
    id
    OG008
    title
    Trilaciclib (G1T28) 240 mg/m² + Topotecan 1.0 mg/m² - Cohort 7- Part 1
param Type
MEAN
population Description
The intent-to-treat (ITT) analysis set: All enrolled patients who received at least one dose of study drugs in Part 1 and all randomized patients in Part 2 on the basis of the assigned treatment.
reporting Status
POSTED
time Frame
Evaluated for Cycle 1 (i.e., from date of first dose of study drug (Part 1)/randomization (Part 2) to the end of Cycle 1, each cycle = 21 days)
title
Duration of Severe (Grade 4) Neutropenia in Cycle 1
type
PRIMARY
unit Of Measure
days

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice