Skip to content
← Full study record

NCT02819518 · OUTCOME

Part 2: Percentage of Participants Who Discontinued Study Drug Due to an AE- All Participants

Study of Pembrolizumab (MK-3475) Plus Chemotherapy vs. Placebo Plus Chemotherapy for Previously Untreated Locally Recurrent Inoperable or Metastatic Triple Negative Breast Cancer (MK-3475-355/KEYNOTE-355) · Source last updated 2024-11-27

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

Measure
NUMBER
Unit
Percentage of Participants
Interval / dispersion
Not reported
Time frame
Up to approximately 81 months

What was measured

An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment.

Analysis population: All randomized participants who received at least 1 dose of study intervention. Participants were included in the group corresponding to the study intervention actually received.

Groups in this outcome

Part 2: Pembrolizumab + Chemotherapy

Participants received pembrolizumab 200 mg IV on Day 1 of each 21-day cycle PLUS one of three background chemotherapy regimens at investigator's discretion: 1) nab-paclitaxel IV on Days 1, 8 and 15 of each 28-day cycle, 2) paclitaxel IV on Days 1, 8 and 15 of each 28-day cycle, OR 3) gemcitabine/carboplatin (gemcitabine) and an AUC 2 (carboplatin) on Days 1 and 8 of each 21-day cycle. Qualified participants who received first course of pembrolizumab but continued to experience disease progression were eligible to initiate a second course of pembrolizumab IV Q3W for up to 17 administrations (up to \~1 year).

Part 2: Placebo + Chemotherapy

Participants received placebo (normal saline) IV on Day 1 of each 21-day cycle PLUS one of three background chemotherapy regimens at investigator's discretion: 1) nab-paclitaxel 100 mg/m\^2 IV on Days 1, 8 and 15 of each 28-day cycle, 2) paclitaxel 90 mg/m\^2 IV on Days 1, 8 and 15 of each 28-day cycle, OR 3) gemcitabine/carboplatin 1000 mg/m\^2 (gemcitabine) and an AUC 2 (carboplatin) on Days 1 and 8 of each 21-day cycle.

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

Analysis denominator · Participants

GroupSource count
Part 2: Pembrolizumab + Chemotherapy562
Part 2: Placebo + Chemotherapy281

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Part 2: Pembrolizumab + Chemotherapy20.5Not reportedNot reportedNot reportedNot reported
Part 2: Placebo + Chemotherapy13.2Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        20.5
      2. group Id
        OG001
        value
        13.2
denoms
  1. counts
    1. group Id
      OG000
      value
      562
    2. group Id
      OG001
      value
      281
    units
    Participants
description
An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment.
groups
  1. description
    Participants received pembrolizumab 200 mg IV on Day 1 of each 21-day cycle PLUS one of three background chemotherapy regimens at investigator's discretion: 1) nab-paclitaxel IV on Days 1, 8 and 15 of each 28-day cycle, 2) paclitaxel IV on Days 1, 8 and 15 of each 28-day cycle, OR 3) gemcitabine/carboplatin (gemcitabine) and an AUC 2 (carboplatin) on Days 1 and 8 of each 21-day cycle. Qualified participants who received first course of pembrolizumab but continued to experience disease progression were eligible to initiate a second course of pembrolizumab IV Q3W for up to 17 administrations (up to \~1 year).
    id
    OG000
    title
    Part 2: Pembrolizumab + Chemotherapy
  2. description
    Participants received placebo (normal saline) IV on Day 1 of each 21-day cycle PLUS one of three background chemotherapy regimens at investigator's discretion: 1) nab-paclitaxel 100 mg/m\^2 IV on Days 1, 8 and 15 of each 28-day cycle, 2) paclitaxel 90 mg/m\^2 IV on Days 1, 8 and 15 of each 28-day cycle, OR 3) gemcitabine/carboplatin 1000 mg/m\^2 (gemcitabine) and an AUC 2 (carboplatin) on Days 1 and 8 of each 21-day cycle.
    id
    OG001
    title
    Part 2: Placebo + Chemotherapy
param Type
NUMBER
population Description
All randomized participants who received at least 1 dose of study intervention. Participants were included in the group corresponding to the study intervention actually received.
reporting Status
POSTED
time Frame
Up to approximately 81 months
title
Part 2: Percentage of Participants Who Discontinued Study Drug Due to an AE- All Participants
type
SECONDARY
unit Of Measure
Percentage of Participants

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

Preserved source evidence · Not medical advice