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NCT04472429 · OUTCOME

Disease Control Rate (DCR)

Carboplatin-paclitaxel With Retifanlimab or Placebo in Participants With Locally Advanced or Metastatic Squamous Cell Anal Carcinoma (POD1UM-303/InterAACT 2). · Source last updated 2026-09-02

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
up to 445 days

What was measured

DCR was defined as the percentage of participants maintaining either a confirmed overall response of CR or PR or stable disease (SD) at any post-Baseline visit before the first PD or new anticancer therapy, according to RECIST v1.1 as determined by BICR. CR: disappearance of all target and non-target lesions and no appearance of any new lesions. Any pathological lymph nodes (whether target or non-target) must have a reduction in the short axis to \<10 mm. PR: at least a 30% decrease in the sum of the diameters of target lesions, taking as a reference the baseline sum diameters, no new lesions, and no progression of non-target lesions. PD: progression of a target or non-target lesion or presence of a new lesion. SD: no change in target lesions to qualify for CR, PR, or PD.

Analysis population: Full Analysis Set. Confidence intervals were calculated based on the exact method for binomial distributions.

Groups in this outcome

Retifanlimab 500 mg Q4W + Chemotherapy

Participants received retifanlimab 500 milligrams (mg) every 4 weeks (Q4W) for up to thirteen 28-day cycles (1 year) in the absence of disease progression, intolerable toxicity, death, withdrawal of consent, being lost to follow-up, or premature discontinuation of all assigned study drug administration or for any other reason. Participants also received the standard-of-care chemotherapy regimen of up to 6 induction cycles (24 weeks) of carboplatin (AUC5 on Day 1) and paclitaxel (80 mg per meters squared \[mg/m\^2\] on Days 1, 8, and 15).

Placebo + Chemotherapy

Participants received matching placebo Q4W for up to thirteen 28-day cycles (1 year) in the absence of disease progression, intolerable toxicity, death, withdrawal of consent, being lost to follow-up, or premature discontinuation of all assigned study drug administration or for any other reason.

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

Analysis denominator · Participants

GroupSource count
Retifanlimab 500 mg Q4W + Chemotherapy154
Placebo + Chemotherapy154

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Retifanlimab 500 mg Q4W + Chemotherapy87.0Not reported80.791.9Not reported
Placebo + Chemotherapy79.9Not reported72.785.9Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        80.7
        upper Limit
        91.9
        value
        87.0
      2. group Id
        OG001
        lower Limit
        72.7
        upper Limit
        85.9
        value
        79.9
denoms
  1. counts
    1. group Id
      OG000
      value
      154
    2. group Id
      OG001
      value
      154
    units
    Participants
description
DCR was defined as the percentage of participants maintaining either a confirmed overall response of CR or PR or stable disease (SD) at any post-Baseline visit before the first PD or new anticancer therapy, according to RECIST v1.1 as determined by BICR. CR: disappearance of all target and non-target lesions and no appearance of any new lesions. Any pathological lymph nodes (whether target or non-target) must have a reduction in the short axis to \<10 mm. PR: at least a 30% decrease in the sum of the diameters of target lesions, taking as a reference the baseline sum diameters, no new lesions, and no progression of non-target lesions. PD: progression of a target or non-target lesion or presence of a new lesion. SD: no change in target lesions to qualify for CR, PR, or PD.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received retifanlimab 500 milligrams (mg) every 4 weeks (Q4W) for up to thirteen 28-day cycles (1 year) in the absence of disease progression, intolerable toxicity, death, withdrawal of consent, being lost to follow-up, or premature discontinuation of all assigned study drug administration or for any other reason. Participants also received the standard-of-care chemotherapy regimen of up to 6 induction cycles (24 weeks) of carboplatin (AUC5 on Day 1) and paclitaxel (80 mg per meters squared \[mg/m\^2\] on Days 1, 8, and 15).
    id
    OG000
    title
    Retifanlimab 500 mg Q4W + Chemotherapy
  2. description
    Participants received matching placebo Q4W for up to thirteen 28-day cycles (1 year) in the absence of disease progression, intolerable toxicity, death, withdrawal of consent, being lost to follow-up, or premature discontinuation of all assigned study drug administration or for any other reason.
    id
    OG001
    title
    Placebo + Chemotherapy
param Type
NUMBER
population Description
Full Analysis Set. Confidence intervals were calculated based on the exact method for binomial distributions.
reporting Status
POSTED
time Frame
up to 445 days
title
Disease Control Rate (DCR)
type
SECONDARY
unit Of Measure
percentage of participants

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

Preserved source evidence · Not medical advice