NCT03653507 · OUTCOME

Time to Confirmed Deterioration (TTCD) Using Physical Functioning as Measured by European Organization for Research and Treatment of Cancer Quality of Life Questionnaire - Core Questionnaire (EORTC QLQ-C30)

A Study of Zolbetuximab (IMAB362) Plus CAPOX Compared With Placebo Plus CAPOX as First-line Treatment of Subjects With Claudin (CLDN) 18.2-positive, HER2-negative, Locally Advanced Unresectable or Metastatic Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma (GLOW). · Source last updated 2026-07-16

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 the date of randomization until 61 months and 12 days

What was measured

TTCD: time from randomization to first clinically meaning full deterioration (CMFD) that was confirmed at the next scheduled visit. The EORTC-QLQ-C30 is a 30-item cancer-specific instrument consisting of 5 functional scales (physical, role, emotional, social and cognitive), 9 symptom scales/items (fatigue, nausea/vomiting, general pain, dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties) and a global health status scale. Most items are scored 1 ('not at all') to 4 ('very much') except for the items contributing to the global health status which are scored 1 ('very poor') to 7 ('excellent'). All raw domain scores are linearly transformed to a 0-100 scale with higher scores on symptoms indicate a worse health state. Clinically meaningful deterioration was defined if a participant's change from baseline (CFB) exceeded a pre-specified threshold (as per investigator's discretion) denoting a clinically meaningful change. Kaplan-Meier estimates was used.

Analysis population: FAS

Groups in this outcome

CAPOX+ Zolbetuximab

Participants received an intravenous (IV) infusion (as a minimum of 2-hour infusion) of zolbetuximab at a loading dose of 800 milligrams per square meter (mg/m\^2) on cycle 1 day 1 (C1D1) followed by subsequent doses of 600 mg/m\^2 every 3 weeks starting from C2D1 until participant met study treatment discontinuation criteria. Participants also received up to 8 treatments of capecitabine and oxaliplatin (CAPOX) treatment. Oxaliplatin was administered 130 mg/m\^2 IV on day 1 of each cycle over 2 hours for a maximum of 8 treatments; Capecitabine was administered orally at 1000 mg/m\^2 twice daily (bid) on days 1 through 14 of each cycle until the participant met study treatment discontinuation criteria. After a maximum of 8 treatments of oxaliplatin, participants may have continued to receive capecitabine taken twice daily on days 1 through 14 of each cycle at the investigator's discretion until the participant met study treatment discontinuation criteria. Each cycle was approximately 21

CAPOX+ Placebo

Participants received an IV infusion (as a minimum of 2-hour infusion) of placebo matched to zolbetuximab on C1D1 followed by subsequent doses every 3 weeks starting from C2D1 until participant met study treatment discontinuation criteria. Participants also received up to 8 treatments of CAPOX. Oxaliplatin was administered 130 mg/m\^2 IV on day 1 of each cycle over 2 hours for a maximum of 8 treatments; Capecitabine was administered orally at 1000 mg/m\^2 bid on days 1 through 14 of each cycle until the participant met study treatment discontinuation criteria. After a maximum of 8 treatments of oxaliplatin, participants may have continued to receive capecitabine taken twice daily on days 1 through 14 of each cycle at the investigator's discretion until the participant met study treatment discontinuation criteria. Each cycle was approximately 21 days.

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

Analysis denominator · Participants

Group	Source count
CAPOX+ Zolbetuximab	254
CAPOX+ Placebo	253

Reported measurements

Source class 1

Values in Months · Interval/dispersion: 95% Confidence Interval
Group	Value	Spread	Lower	Upper	Comment
CAPOX+ Zolbetuximab	7.95	Not reported	5.88	19.78	Not reported
CAPOX+ Placebo	7.92	Not reported	6.47	11.30	Not reported

Source statistical analyses

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

ci Lower Limit
0.772
ci Num Sides
TWO_SIDED
ci Pct Value
95
ci Upper Limit
1.328
estimate Comment
Log-rank test stratified by:\* Region (Asia vs Non-Asia), \* Number of organs with metastatic sites (0 to 2 vs \>= 3), \* Prior gastrectomy (Yes or No)
group Ids
OG000
non Inferiority Type
SUPERIORITY
p Value
0.4654
param Type
Hazard Ratio (HR)
param Value
1.012
statistical Method
Log Rank

Complete source fields

analyses

ci Lower Limit
0.772
ci Num Sides
TWO_SIDED
ci Pct Value
95
ci Upper Limit
1.328
estimate Comment
Log-rank test stratified by:\* Region (Asia vs Non-Asia), \* Number of organs with metastatic sites (0 to 2 vs \>= 3), \* Prior gastrectomy (Yes or No)
group Ids
OG000
non Inferiority Type
SUPERIORITY
p Value
0.4654
param Type
Hazard Ratio (HR)
param Value
1.012
statistical Method
Log Rank

classes

categories
measurements
group Id
OG000
lower Limit
5.88
upper Limit
19.78
value
7.95
group Id
OG001
lower Limit
6.47
upper Limit
11.30
value
7.92

denoms

counts
group Id
OG000
value
254
group Id
OG001
value
253
units
Participants

description

dispersion Type

95% Confidence Interval

groups

description
Participants received an intravenous (IV) infusion (as a minimum of 2-hour infusion) of zolbetuximab at a loading dose of 800 milligrams per square meter (mg/m\^2) on cycle 1 day 1 (C1D1) followed by subsequent doses of 600 mg/m\^2 every 3 weeks starting from C2D1 until participant met study treatment discontinuation criteria. Participants also received up to 8 treatments of capecitabine and oxaliplatin (CAPOX) treatment. Oxaliplatin was administered 130 mg/m\^2 IV on day 1 of each cycle over 2 hours for a maximum of 8 treatments; Capecitabine was administered orally at 1000 mg/m\^2 twice daily (bid) on days 1 through 14 of each cycle until the participant met study treatment discontinuation criteria. After a maximum of 8 treatments of oxaliplatin, participants may have continued to receive capecitabine taken twice daily on days 1 through 14 of each cycle at the investigator's discretion until the participant met study treatment discontinuation criteria. Each cycle was approximately 21
id
OG000
title
CAPOX+ Zolbetuximab
description
Participants received an IV infusion (as a minimum of 2-hour infusion) of placebo matched to zolbetuximab on C1D1 followed by subsequent doses every 3 weeks starting from C2D1 until participant met study treatment discontinuation criteria. Participants also received up to 8 treatments of CAPOX. Oxaliplatin was administered 130 mg/m\^2 IV on day 1 of each cycle over 2 hours for a maximum of 8 treatments; Capecitabine was administered orally at 1000 mg/m\^2 bid on days 1 through 14 of each cycle until the participant met study treatment discontinuation criteria. After a maximum of 8 treatments of oxaliplatin, participants may have continued to receive capecitabine taken twice daily on days 1 through 14 of each cycle at the investigator's discretion until the participant met study treatment discontinuation criteria. Each cycle was approximately 21 days.
id
OG001
title
CAPOX+ Placebo

param Type

MEDIAN

population Description

FAS

reporting Status

POSTED

time Frame

From the date of randomization until 61 months and 12 days

title

Time to Confirmed Deterioration (TTCD) Using Physical Functioning as Measured by European Organization for Research and Treatment of Cancer Quality of Life Questionnaire - Core Questionnaire (EORTC QLQ-C30)

type

SECONDARY

unit Of Measure

Months

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Preserved source evidence · Not medical advice