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NCT01302834 · OUTCOME

Percentage of Participants With Late Grade 3-4 Treatment-related Adverse Events: 5 Years After the End of Study Treatment

Radiation Therapy With Cisplatin or Cetuximab in Treating Patients With Oropharyngeal Cancer · Source last updated 2026-07-20

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
95% Confidence Interval
Time frame
From start of treatment to approximately 61.5 months (five years after the end of treatment)

What was measured

Late adverse events (AE) are defined as \> 180 days from end of treatment. "Treatment-related" means reported as definitely, probably, or possibly related to protocol treatment. AE were graded using the Common Terminology Criteria for Adverse Events (CTCAE) v4.0. Grade refers to the severity of the AE. The CTCAE v4.0 assigns Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1 Mild, Grade 2 Moderate, Grade 3 Severe, Grade 4 Life-threatening or disabling, Grade 5 Death related to AE

Analysis population: Eligible patients who started study treatment and had adverse events assessment at 5 years after treatment end

Groups in this outcome

IMRT + Cisplatin

Intensity-modulated radiotherapy (IMRT) with concurrent cisplatin Cisplatin: 100 mg/m2 IV on days 1 and 22 of IMRT IMRT: 35 fractions over 6 weeks, 6 fractions per week, 2 Gray per fraction to total dose of 70 Gy.

IMRT + Cetuximab

Intensity-modulated radiotherapy (IMRT) with concurrent cetuximab Cetuximab: 400 mg/m2 IV 5-7 days before IMRT then 250 mg/m2 IV weekly for 7 weeks IMRT: 35 fractions over 6 weeks, 6 fractions per week, 2 Gray per fraction to total dose of 70 Gy.

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

Analysis denominator · Participants

GroupSource count
IMRT + Cisplatin92
IMRT + Cetuximab86

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
IMRT + Cisplatin4.3Not reported1.210.8Not reported
IMRT + Cetuximab7.0Not reported2.614.6Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        1.2
        upper Limit
        10.8
        value
        4.3
      2. group Id
        OG001
        lower Limit
        2.6
        upper Limit
        14.6
        value
        7.0
denoms
  1. counts
    1. group Id
      OG000
      value
      92
    2. group Id
      OG001
      value
      86
    units
    Participants
description
Late adverse events (AE) are defined as \> 180 days from end of treatment. "Treatment-related" means reported as definitely, probably, or possibly related to protocol treatment. AE were graded using the Common Terminology Criteria for Adverse Events (CTCAE) v4.0. Grade refers to the severity of the AE. The CTCAE v4.0 assigns Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1 Mild, Grade 2 Moderate, Grade 3 Severe, Grade 4 Life-threatening or disabling, Grade 5 Death related to AE
dispersion Type
95% Confidence Interval
groups
  1. description
    Intensity-modulated radiotherapy (IMRT) with concurrent cisplatin Cisplatin: 100 mg/m2 IV on days 1 and 22 of IMRT IMRT: 35 fractions over 6 weeks, 6 fractions per week, 2 Gray per fraction to total dose of 70 Gy.
    id
    OG000
    title
    IMRT + Cisplatin
  2. description
    Intensity-modulated radiotherapy (IMRT) with concurrent cetuximab Cetuximab: 400 mg/m2 IV 5-7 days before IMRT then 250 mg/m2 IV weekly for 7 weeks IMRT: 35 fractions over 6 weeks, 6 fractions per week, 2 Gray per fraction to total dose of 70 Gy.
    id
    OG001
    title
    IMRT + Cetuximab
param Type
NUMBER
population Description
Eligible patients who started study treatment and had adverse events assessment at 5 years after treatment end
reporting Status
POSTED
time Frame
From start of treatment to approximately 61.5 months (five years after the end of treatment)
title
Percentage of Participants With Late Grade 3-4 Treatment-related Adverse Events: 5 Years After the End of Study Treatment
type
SECONDARY
unit Of Measure
percentage of participants

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

Preserved source evidence · Not medical advice