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NCT02702414 · OUTCOME

Duration of Response (DOR)

Study of Pembrolizumab (MK-3475) as Monotherapy in Participants With Advanced Hepatocellular Carcinoma (MK-3475-224/KEYNOTE-224) · Source last updated 2024-09-04

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 approximately 34 months for Cohort 1 and up to approximately 28 months for Cohort 2

What was measured

DOR was determined in participants who demonstrated a confirmed Complete Response (CR: disappearance of all target and non-target lesions) or Partial Response (PR: ≥30% decrease in the sum of diameters of target and non-target lesions) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as assessed by blinded central imaging vendor. DOR was defined as the time from first documented evidence of a CR or PR until progressive disease (PD) or death. Participants who had not progressed, started a new anti-cancer therapy, been lost to follow-up, or died at the time of analysis were censored at the date of their last tumor assessment. Per RECIST 1.1, PD was at least a 20% increase in the sum of diameters of target lesions and an absolute increase of at least 5 mm, OR unequivocal progression for non-target lesions, OR appearance of one or more new lesions. The DOR per RECIST 1.1 for all participants who had a confirmed CR or PR is presented.

Analysis population: All participants who received at least one dose of study treatment and who had a confirmed CR or confirmed PR during the first course of therapy.

Groups in this outcome

Cohort 1: HCC-Prior Systemic Therapy With Sorafenib

Participants with previously systemically treated HCC received a pembrolizumab 200 mg IV infusion on Day 1 of each 3-week cycle for up to 35 administrations. Participants who stopped pembrolizumab as a result of obtaining a confirmed complete response (CR) or those who stopped after receiving 35 trial treatments were eligible for an additional 17 trial treatments (approximately an additional 1 year of treatment) after progressive disease if they met the criteria for re-treatment.

Cohort 2: HCC-Systemic Therapy Naïve

Participants with HCC who had not received treatment for systemic disease received a pembrolizumab 200 mg IV infusion on Day 1 of each 3-week cycle for up to 35 administrations. Participants who stopped pembrolizumab as a result of obtaining a confirmed complete response (CR) or those who stopped after receiving 35 trial treatments were eligible for an additional 17 trial treatments (approximately an additional 1 year of treatment) after progressive disease if they met the criteria for re-treatment.

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

Analysis denominator · Participants

GroupSource count
Cohort 1: HCC-Prior Systemic Therapy With Sorafenib19
Cohort 2: HCC-Systemic Therapy Naïve8

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Cohort 1: HCC-Prior Systemic Therapy With Sorafenib21.0Not reported10.7NANA=upper limit not reached at time of data cut-off due to insufficient number of responding participants with relapse
Cohort 2: HCC-Systemic Therapy Naïve16.2Not reported3.1NANA=upper limit not reached at time of data cut-off due to insufficient number of responding participants with relapse
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        NA=upper limit not reached at time of data cut-off due to insufficient number of responding participants with relapse
        group Id
        OG000
        lower Limit
        10.7
        upper Limit
        NA
        value
        21.0
      2. comment
        NA=upper limit not reached at time of data cut-off due to insufficient number of responding participants with relapse
        group Id
        OG001
        lower Limit
        3.1
        upper Limit
        NA
        value
        16.2
denoms
  1. counts
    1. group Id
      OG000
      value
      19
    2. group Id
      OG001
      value
      8
    units
    Participants
description
DOR was determined in participants who demonstrated a confirmed Complete Response (CR: disappearance of all target and non-target lesions) or Partial Response (PR: ≥30% decrease in the sum of diameters of target and non-target lesions) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as assessed by blinded central imaging vendor. DOR was defined as the time from first documented evidence of a CR or PR until progressive disease (PD) or death. Participants who had not progressed, started a new anti-cancer therapy, been lost to follow-up, or died at the time of analysis were censored at the date of their last tumor assessment. Per RECIST 1.1, PD was at least a 20% increase in the sum of diameters of target lesions and an absolute increase of at least 5 mm, OR unequivocal progression for non-target lesions, OR appearance of one or more new lesions. The DOR per RECIST 1.1 for all participants who had a confirmed CR or PR is presented.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with previously systemically treated HCC received a pembrolizumab 200 mg IV infusion on Day 1 of each 3-week cycle for up to 35 administrations. Participants who stopped pembrolizumab as a result of obtaining a confirmed complete response (CR) or those who stopped after receiving 35 trial treatments were eligible for an additional 17 trial treatments (approximately an additional 1 year of treatment) after progressive disease if they met the criteria for re-treatment.
    id
    OG000
    title
    Cohort 1: HCC-Prior Systemic Therapy With Sorafenib
  2. description
    Participants with HCC who had not received treatment for systemic disease received a pembrolizumab 200 mg IV infusion on Day 1 of each 3-week cycle for up to 35 administrations. Participants who stopped pembrolizumab as a result of obtaining a confirmed complete response (CR) or those who stopped after receiving 35 trial treatments were eligible for an additional 17 trial treatments (approximately an additional 1 year of treatment) after progressive disease if they met the criteria for re-treatment.
    id
    OG001
    title
    Cohort 2: HCC-Systemic Therapy Naïve
param Type
MEDIAN
population Description
All participants who received at least one dose of study treatment and who had a confirmed CR or confirmed PR during the first course of therapy.
reporting Status
POSTED
time Frame
Up to approximately 34 months for Cohort 1 and up to approximately 28 months for Cohort 2
title
Duration of Response (DOR)
type
SECONDARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice