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NCT03043313 · OUTCOME

Duration of Response (DOR) Per RECIST v1.1 According to BICR Assessment

Tucatinib Plus Trastuzumab in Patients With HER2+ Colorectal Cancer · Source last updated 2024-11-26

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
Up to 64.1 months

What was measured

DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST v1.1 or death from any cause, whichever occurred first. CR was defined as the disappearance of all target lesions and each target lymph node must have reduction in short axis to more than \<1.0 cm. PR was defined as at least a 30% decrease in post-baseline sum of the diameters (PBSD) (sum of the longest diameter for all target lesions plus the sum of the short axis of all the target lymph nodes at current evaluation) taking as reference the BSD. PD was defined as: at least one new malignant lesion, which also includes any lymph node that was normal at baseline (\<1.0 cm short axis) and increased to more than or equal to (\>=)1.0 cm short axis during follow-up or at least a 20% increase in PBSD taking as reference the minimum sum of the diameters (MSD). In addition, the PBSD must also demonstrate an absolute increase of at least 0.5 cm from the MSD.

Analysis population: The Full Analysis Set included all participants who were enrolled and received any amount of study treatment and had HER2+ tumors as defined by one or more protocol required local tests. Data for cohort A and B was combined as prespecified in SAP. Here, "Number of Participants Analyzed" signifies participants who had CR or PR.

Groups in this outcome

Tucatinib+Trastuzumab (Cohorts A+B)

Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Trastuzumab 8 mg/kg by IV infusion on Day 1 of Cycle 1 and 6 mg/kg on Day 1 of each subsequent cycle until PD, death, withdrawal of consent, study closure, or alternative therapy.

Tucatinib Pre-Crossover (Cohort C)

Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Participants who did not respond to monotherapy were given the option to receive tucatinib and trastuzumab based on radiographic progression (as determined by investigator assessment using RECIST v1.1), or if they had not achieved a PR or CR by the week 12 assessment.

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

Analysis denominator · Participants

GroupSource count
Tucatinib+Trastuzumab (Cohorts A+B)33
Tucatinib Pre-Crossover (Cohort C)30

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Tucatinib+Trastuzumab (Cohorts A+B)15.2Not reported8.920.5Not reported
Tucatinib Pre-Crossover (Cohort C)NANot reportedNANAData for median and lower or upper limits could not be estimated due to insufficient participants with event.
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        8.9
        upper Limit
        20.5
        value
        15.2
      2. comment
        Data for median and lower or upper limits could not be estimated due to insufficient participants with event.
        group Id
        OG001
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      33
    2. group Id
      OG001
      value
      30
    units
    Participants
description
DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST v1.1 or death from any cause, whichever occurred first. CR was defined as the disappearance of all target lesions and each target lymph node must have reduction in short axis to more than \<1.0 cm. PR was defined as at least a 30% decrease in post-baseline sum of the diameters (PBSD) (sum of the longest diameter for all target lesions plus the sum of the short axis of all the target lymph nodes at current evaluation) taking as reference the BSD. PD was defined as: at least one new malignant lesion, which also includes any lymph node that was normal at baseline (\<1.0 cm short axis) and increased to more than or equal to (\>=)1.0 cm short axis during follow-up or at least a 20% increase in PBSD taking as reference the minimum sum of the diameters (MSD). In addition, the PBSD must also demonstrate an absolute increase of at least 0.5 cm from the MSD.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Trastuzumab 8 mg/kg by IV infusion on Day 1 of Cycle 1 and 6 mg/kg on Day 1 of each subsequent cycle until PD, death, withdrawal of consent, study closure, or alternative therapy.
    id
    OG000
    title
    Tucatinib+Trastuzumab (Cohorts A+B)
  2. description
    Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Participants who did not respond to monotherapy were given the option to receive tucatinib and trastuzumab based on radiographic progression (as determined by investigator assessment using RECIST v1.1), or if they had not achieved a PR or CR by the week 12 assessment.
    id
    OG001
    title
    Tucatinib Pre-Crossover (Cohort C)
param Type
MEDIAN
population Description
The Full Analysis Set included all participants who were enrolled and received any amount of study treatment and had HER2+ tumors as defined by one or more protocol required local tests. Data for cohort A and B was combined as prespecified in SAP. Here, "Number of Participants Analyzed" signifies participants who had CR or PR.
reporting Status
POSTED
time Frame
Up to 64.1 months
title
Duration of Response (DOR) Per RECIST v1.1 According to BICR Assessment
type
SECONDARY
unit Of Measure
Months

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

Preserved source evidence · Not medical advice