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NCT02358031 · OUTCOME

Number of Participants Experiencing an Adverse Event (AE)

A Study of Pembrolizumab (MK-3475) for First Line Treatment of Recurrent or Metastatic Squamous Cell Cancer of the Head and Neck (MK-3475-048/KEYNOTE-048) · Source last updated 2025-07-18

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

Measure
COUNT_OF_PARTICIPANTS
Unit
Participants
Interval / dispersion
Not reported
Time frame
Up to approximately 47 months

What was measured

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a pre-existing condition that was temporally associated with the use of the Sponsor's product was also an AE. The number of participants that experienced at least one AE, for the first course of treatment, was reported for each arm.

Analysis population: All randomized participants who received ≥1 dose of study drug.

Groups in this outcome

Pembrolizumab Monotherapy (Pembro Mono)

Participants received pembrolizumab 200 mg intravenously (IV) on Day 1 of each 3-week cycle for up to 35 cycles (up to \~2 years).

Pembrolizumab + Chemotherapy (Pembro Combo)

Participants received pembrolizumab 200 mg IV on Day 1 of each 3-week cycle for up to 35 cycles (up to \~2 years); plus cisplatin 100 mg/m\^2 IV or carboplatin at a target area under the curve of 5 (AUC 5) IV, per Investigator's choice, on Day 1 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]); plus 5-Fluorouracil (5-FU) 1000 mg/m\^2/day IV continuous from Day 1-4 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]).

Cetuximab + Chemotherapy (Control)

Participants received cetuximab on Day 1 at a dose of 400 mg/m\^2 IV, and then 250 mg/m\^2 IV on Day 1 of each subsequent week until disease progression or unacceptable toxicity; plus cisplatin 100 mg/m\^2 IV or carboplatin AUC 5 IV (Investigator's choice) on Day 1 of each 3-week cycle (6 cycle maximum \[up to \~4 months\] for platinum-based therapy); plus 5-FU 1000 mg/m\^2/day IV continuous from Day 1-4 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]).

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 Monotherapy (Pembro Mono)300
Pembrolizumab + Chemotherapy (Pembro Combo)276
Cetuximab + Chemotherapy (Control)287

Reported measurements

Source class 1
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Pembrolizumab Monotherapy (Pembro Mono)290Not reportedNot reportedNot reportedNot reported
Pembrolizumab + Chemotherapy (Pembro Combo)271Not reportedNot reportedNot reportedNot reported
Cetuximab + Chemotherapy (Control)286Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        290
      2. group Id
        OG001
        value
        271
      3. group Id
        OG002
        value
        286
denoms
  1. counts
    1. group Id
      OG000
      value
      300
    2. group Id
      OG001
      value
      276
    3. group Id
      OG002
      value
      287
    units
    Participants
description
An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore be any unfavourable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a pre-existing condition that was temporally associated with the use of the Sponsor's product was also an AE. The number of participants that experienced at least one AE, for the first course of treatment, was reported for each arm.
groups
  1. description
    Participants received pembrolizumab 200 mg intravenously (IV) on Day 1 of each 3-week cycle for up to 35 cycles (up to \~2 years).
    id
    OG000
    title
    Pembrolizumab Monotherapy (Pembro Mono)
  2. description
    Participants received pembrolizumab 200 mg IV on Day 1 of each 3-week cycle for up to 35 cycles (up to \~2 years); plus cisplatin 100 mg/m\^2 IV or carboplatin at a target area under the curve of 5 (AUC 5) IV, per Investigator's choice, on Day 1 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]); plus 5-Fluorouracil (5-FU) 1000 mg/m\^2/day IV continuous from Day 1-4 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]).
    id
    OG001
    title
    Pembrolizumab + Chemotherapy (Pembro Combo)
  3. description
    Participants received cetuximab on Day 1 at a dose of 400 mg/m\^2 IV, and then 250 mg/m\^2 IV on Day 1 of each subsequent week until disease progression or unacceptable toxicity; plus cisplatin 100 mg/m\^2 IV or carboplatin AUC 5 IV (Investigator's choice) on Day 1 of each 3-week cycle (6 cycle maximum \[up to \~4 months\] for platinum-based therapy); plus 5-FU 1000 mg/m\^2/day IV continuous from Day 1-4 of each 3-week cycle (6 cycle maximum \[up to \~4 months\]).
    id
    OG002
    title
    Cetuximab + Chemotherapy (Control)
param Type
COUNT_OF_PARTICIPANTS
population Description
All randomized participants who received ≥1 dose of study drug.
reporting Status
POSTED
time Frame
Up to approximately 47 months
title
Number of Participants Experiencing an Adverse Event (AE)
type
SECONDARY
unit Of Measure
Participants

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

Preserved source evidence · Not medical advice