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NCT03875235 · OUTCOME

Progression-free Survival (PFS) Rate at 12 Months

Durvalumab or Placebo in Combination With Gemcitabine/Cisplatin in Patients With 1st Line Advanced Biliary Tract Cancer (TOPAZ-1) · Source last updated 2026-08-26

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
Tumor assessments every 6 weeks after randomization for the first 24 weeks and then every 8 weeks thereafter until date of RECIST 1.1 defined radiological progressive disease or death. Calculated at 12 months using the Kaplan-Meier technique

What was measured

PFS based on investigator assessments according to RECIST version 1.1 was defined as time from date of randomization until date of objective disease progression or death (by any cause in the absence of progression), regardless of whether the patient withdrew from randomized therapy or received another anticancer therapy prior to progression. Progression (i.e., PD) was defined as at least a 20% increase in the sum of diameters of target lesions (TLs) and an absolute increase of ≥5mm, taking as reference the smallest sum of diameters since treatment started including the baseline sum of diameters, or a measurable increase in a non-target lesion, or the appearance of new lesions. Median PFS was calculated using the Kaplan-Meier technique.

Analysis population: Full analysis set

Groups in this outcome

Durvalumab + Gemcitabine + Cisplatin

Drug: Durvalumab IV infusion every 3 weeks with gemcitabine plus cisplatin up to 8 cycles followed by monotherapy every 4 weeks until disease progression or other discontinuation criteria.

Placebo + Gemcitabine + Cisplatin

Drug: Placebo IV infusion every 3 weeks with gemcitabine plus cisplatin up to 8 cycles followed by monotherapy every 4 weeks until disease progression or other discontinuation criteria.

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

Analysis denominator · Participants

GroupSource count
Durvalumab + Gemcitabine + Cisplatin341
Placebo + Gemcitabine + Cisplatin344

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Durvalumab + Gemcitabine + Cisplatin16.0Not reported12.020.6Not reported
Placebo + Gemcitabine + Cisplatin6.6Not reported4.19.9Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        12.0
        upper Limit
        20.6
        value
        16.0
      2. group Id
        OG001
        lower Limit
        4.1
        upper Limit
        9.9
        value
        6.6
denoms
  1. counts
    1. group Id
      OG000
      value
      341
    2. group Id
      OG001
      value
      344
    units
    Participants
description
PFS based on investigator assessments according to RECIST version 1.1 was defined as time from date of randomization until date of objective disease progression or death (by any cause in the absence of progression), regardless of whether the patient withdrew from randomized therapy or received another anticancer therapy prior to progression. Progression (i.e., PD) was defined as at least a 20% increase in the sum of diameters of target lesions (TLs) and an absolute increase of ≥5mm, taking as reference the smallest sum of diameters since treatment started including the baseline sum of diameters, or a measurable increase in a non-target lesion, or the appearance of new lesions. Median PFS was calculated using the Kaplan-Meier technique.
dispersion Type
95% Confidence Interval
groups
  1. description
    Drug: Durvalumab IV infusion every 3 weeks with gemcitabine plus cisplatin up to 8 cycles followed by monotherapy every 4 weeks until disease progression or other discontinuation criteria.
    id
    OG000
    title
    Durvalumab + Gemcitabine + Cisplatin
  2. description
    Drug: Placebo IV infusion every 3 weeks with gemcitabine plus cisplatin up to 8 cycles followed by monotherapy every 4 weeks until disease progression or other discontinuation criteria.
    id
    OG001
    title
    Placebo + Gemcitabine + Cisplatin
param Type
NUMBER
population Description
Full analysis set
reporting Status
POSTED
time Frame
Tumor assessments every 6 weeks after randomization for the first 24 weeks and then every 8 weeks thereafter until date of RECIST 1.1 defined radiological progressive disease or death. Calculated at 12 months using the Kaplan-Meier technique
title
Progression-free Survival (PFS) Rate at 12 Months
type
SECONDARY
unit Of Measure
Percentage of Participants

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

Preserved source evidence · Not medical advice