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NCT03258554 · OUTCOME

Overall Survival (Percentage of Participants Alive) [Originally Phase III Primary / Now Phase II Secondary]

Radiation Therapy With Durvalumab or Cetuximab in Treating Patients With Locoregionally Advanced Head and Neck Cancer Who Cannot Take Cisplatin · Source last updated 2026-08-27

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
95% Confidence Interval
Time frame
From randomization to last follow-up: weekly during RT, after end of RT: every 4 months for 1 year, every 6 months for 2 years, then annually. Additionally, every 4 weeks during adjuvant durvalumab. Maximum follow-up at time of analysis was 4.2 years.

What was measured

Overall survival (OS) time is defined as time from randomization to the date of death from any cause or last known follow-up (censored). Overall survival rates are estimated by the Kaplan-Meier method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year estimates are provided.

Analysis population: Randomized participants

Groups in this outcome

RT+ Cetuximab

IMRT for seven weeks, 5 fractions/week. Cetuximab 400 mg/m\^2 IV starts one week prior to RT, then 250 mg/m\^2 weekly for seven additional cycles in the absence of disease progression or unacceptable toxicity.

RT + Durvalumab

IMRT for seven weeks, 5 fractions/week. Durvalumab 1500 mg IV starts two weeks prior to RT and continues every 4 weeks for a total of seven cycles in the absence of disease progression or unacceptable toxicity.

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

Analysis denominator · Participants

GroupSource count
RT+ Cetuximab63
RT + Durvalumab123

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
RT+ Cetuximab77.5Not reported66.788.3Not reported
RT + Durvalumab69.3Not reported60.877.8Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    0.74
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    2.28
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.8175
    p Value Comment
    One-side significance level = 0.025
    param Type
    Hazard Ratio (HR)
    param Value
    1.30
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.74
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    2.28
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.8175
    p Value Comment
    One-side significance level = 0.025
    param Type
    Hazard Ratio (HR)
    param Value
    1.30
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        66.7
        upper Limit
        88.3
        value
        77.5
      2. group Id
        OG001
        lower Limit
        60.8
        upper Limit
        77.8
        value
        69.3
denoms
  1. counts
    1. group Id
      OG000
      value
      63
    2. group Id
      OG001
      value
      123
    units
    Participants
description
Overall survival (OS) time is defined as time from randomization to the date of death from any cause or last known follow-up (censored). Overall survival rates are estimated by the Kaplan-Meier method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year estimates are provided.
dispersion Type
95% Confidence Interval
groups
  1. description
    IMRT for seven weeks, 5 fractions/week. Cetuximab 400 mg/m\^2 IV starts one week prior to RT, then 250 mg/m\^2 weekly for seven additional cycles in the absence of disease progression or unacceptable toxicity.
    id
    OG000
    title
    RT+ Cetuximab
  2. description
    IMRT for seven weeks, 5 fractions/week. Durvalumab 1500 mg IV starts two weeks prior to RT and continues every 4 weeks for a total of seven cycles in the absence of disease progression or unacceptable toxicity.
    id
    OG001
    title
    RT + Durvalumab
param Type
NUMBER
population Description
Randomized participants
reporting Status
POSTED
time Frame
From randomization to last follow-up: weekly during RT, after end of RT: every 4 months for 1 year, every 6 months for 2 years, then annually. Additionally, every 4 weeks during adjuvant durvalumab. Maximum follow-up at time of analysis was 4.2 years.
title
Overall Survival (Percentage of Participants Alive) [Originally Phase III Primary / Now Phase II Secondary]
type
PRIMARY
unit Of Measure
percentage of participants

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice