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NCT03783442 · OUTCOME

Duration of Response (DOR)

A Study of Tislelizumab (BGB-A317) in Combination With Chemotherapy as First Line Treatment in Participants With Advanced Esophageal Squamous Cell Carcinoma · Source last updated 2025-07-29

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

Measure
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
From randomization to the primary analysis cutoff date of 28 February 2022; maximum time on follow-up was 3 years and 2 months.

What was measured

DOR is defined as the time from the first determination of an objective response until the first documentation of progression assessed by the investigator per RECIST v1.1 or death, whichever occurred first. Median DOR was estimated using the Kaplan-Meier method. Primary analysis (data cut-off date of 28 February 2022) was the pre-defined analysis at which the primary endpoint was tested for superiority. Testing for all secondary efficacy endpoints was conducted at the time of the primary analysis.

Analysis population: Participants in the ITT Analysis Set with an objective response

Groups in this outcome

Tislelizumab + Chemotherapy

Participants received tislelizumab 200 mg administered IV on Day 1 of each 3-week treatment cycle together with an investigator-chosen chemotherapy doublet until unacceptable toxicity, disease progression or withdrawal for other reasons.

Placebo + Chemotherapy

Participants received placebo administered IV on Day 1 of each 3-week treatment cycle together with an investigator-chosen chemotherapy doublet until unacceptable toxicity, disease progression or withdrawal for other reasons.

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

Analysis denominator · Participants

GroupSource count
Tislelizumab + Chemotherapy207
Placebo + Chemotherapy137

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Tislelizumab + Chemotherapy7.1Not reported6.18.1Not reported
Placebo + Chemotherapy5.7Not reported4.47.1Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        6.1
        upper Limit
        8.1
        value
        7.1
      2. group Id
        OG001
        lower Limit
        4.4
        upper Limit
        7.1
        value
        5.7
denoms
  1. counts
    1. group Id
      OG000
      value
      207
    2. group Id
      OG001
      value
      137
    units
    Participants
description
DOR is defined as the time from the first determination of an objective response until the first documentation of progression assessed by the investigator per RECIST v1.1 or death, whichever occurred first. Median DOR was estimated using the Kaplan-Meier method. Primary analysis (data cut-off date of 28 February 2022) was the pre-defined analysis at which the primary endpoint was tested for superiority. Testing for all secondary efficacy endpoints was conducted at the time of the primary analysis.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received tislelizumab 200 mg administered IV on Day 1 of each 3-week treatment cycle together with an investigator-chosen chemotherapy doublet until unacceptable toxicity, disease progression or withdrawal for other reasons.
    id
    OG000
    title
    Tislelizumab + Chemotherapy
  2. description
    Participants received placebo administered IV on Day 1 of each 3-week treatment cycle together with an investigator-chosen chemotherapy doublet until unacceptable toxicity, disease progression or withdrawal for other reasons.
    id
    OG001
    title
    Placebo + Chemotherapy
param Type
MEDIAN
population Description
Participants in the ITT Analysis Set with an objective response
reporting Status
POSTED
time Frame
From randomization to the primary analysis cutoff date of 28 February 2022; maximum time on follow-up was 3 years and 2 months.
title
Duration of Response (DOR)
type
SECONDARY
unit Of Measure
months

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

Preserved source evidence · Not medical advice