Skip to content
← Full study record

NCT03783078 · OUTCOME

Duration of Response (DOR)

Pembrolizumab (MK-3475) as First-line Therapy for Advanced Merkel Cell Carcinoma (MK-3475-913) · Source last updated 2025-05-28

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 ~58 months

What was measured

For participants who demonstrated a confirmed Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR was defined as the time from first documented evidence of a CR or PR until progressive disease (PD) or death. DOR for participants who had not progressed or died at the time of analysis was censored at the date of their last tumor assessment. Per RECIST 1.1, PD was defined as at least a 20% increase in the sum of diameters of target lesions as well as an absolute increase of at least a 5 mm in the sum of diameters. The appearance of one or more new lesions was also considered PD. DOR assessments were based on BICR with confirmation. The DOR as assessed using RECIST 1.1 for all participants who experienced a confirmed CR or PR was presented.

Analysis population: The analysis population consisted of all allocated participants who received at least 1 dose of study treatment, and who experienced a confirmed CR or confirmed PR.

Groups in this outcome

Pembrolizumab 200 mg

Adult participants received pembrolizumab (MK-3475) 200 mg or pediatric participants received 2 mg/kg (up to 200 mg) on Day 1 Q3W IV for up to 35 administrations (approximately 2 years).

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

Analysis denominator · Participants

GroupSource count
Pembrolizumab 200 mg27

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Pembrolizumab 200 mg39.8Not reported23.8NANA = 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
        23.8
        upper Limit
        NA
        value
        39.8
denoms
  1. counts
    1. group Id
      OG000
      value
      27
    units
    Participants
description
For participants who demonstrated a confirmed Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR was defined as the time from first documented evidence of a CR or PR until progressive disease (PD) or death. DOR for participants who had not progressed or died at the time of analysis was censored at the date of their last tumor assessment. Per RECIST 1.1, PD was defined as at least a 20% increase in the sum of diameters of target lesions as well as an absolute increase of at least a 5 mm in the sum of diameters. The appearance of one or more new lesions was also considered PD. DOR assessments were based on BICR with confirmation. The DOR as assessed using RECIST 1.1 for all participants who experienced a confirmed CR or PR was presented.
dispersion Type
95% Confidence Interval
groups
  1. description
    Adult participants received pembrolizumab (MK-3475) 200 mg or pediatric participants received 2 mg/kg (up to 200 mg) on Day 1 Q3W IV for up to 35 administrations (approximately 2 years).
    id
    OG000
    title
    Pembrolizumab 200 mg
param Type
MEDIAN
population Description
The analysis population consisted of all allocated participants who received at least 1 dose of study treatment, and who experienced a confirmed CR or confirmed PR.
reporting Status
POSTED
time Frame
Up to ~58 months
title
Duration of Response (DOR)
type
SECONDARY
unit Of Measure
Months

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

Preserved source evidence · Not medical advice