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NCT03635567 · OUTCOME

Progression-free Survival (PFS) Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator in Participants With Programmed Cell Death-Ligand 1 (PD-L1) Combined Positive Score (CPS) ≥1

Efficacy and Safety Study of First-line Treatment With Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy in Women With Persistent, Recurrent, or Metastatic Cervical Cancer (MK-3475-826/KEYNOTE-826) · Source last updated 2026-02-04

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
Up to approximately 46 months

What was measured

PFS was defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, PD was defined as ≥ 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. Note: The appearance of one or more new lesions was also considered PD. The PFS per RECIST 1.1 as assessed by Investigator for all randomized participants with PD-L1 CPS ≥1 is presented.

Analysis population: All randomized participants with PD-L1 CPS ≥1 based on the treatment group to which they were randomized.

Groups in this outcome

Pembrolizumab+Chemotherapy

On Day 1 of each 21-day cycle, participants received an intravenous (IV) infusion of pembrolizumab 200 mg for up to 35 cycles (up to approximately 2 years) PLUS Investigator choice of chemotherapy for up to 6 cycles (paclitaxel 175 mg/m\^2 PLUS cisplatin 50 mg/m\^2 WITH or WITHOUT bevacizumab 15 mg/kg per local label OR paclitaxel 175 mg/m\^2 PLUS carboplatin Area Under the Curve (AUC) 5 for up to 6 cycles, WITH or WITHOUT bevacizumab 15 mg/kg per local label). All treatments were administered until disease progression or toxicity. Eligible participants who stopped the initial course of pembrolizumab with Stable Disease (SD) or better but progressed after discontinuation may have been able to initiate a second course of pembrolizumab for up to 17 cycles (up to approximately 1 additional year) at the investigator's discretion.

Placebo+Chemotherapy

On Day 1 of each 21-day cycle, participants received an IV infusion of placebo (Normal Saline or Dextrose solution) for up to 35 cycles (up to approximately 2 years) PLUS Investigator choice of chemotherapy for up to 6 cycles (paclitaxel 175 mg/m\^2 PLUS cisplatin 50 mg/m\^2 WITH or WITHOUT bevacizumab 15 mg/kg per local label OR paclitaxel 175 mg/m\^2 PLUS carboplatin AUC 5 for up to 6 cycles, WITH or WITHOUT bevacizumab 15 mg/kg per local label). All treatments were administered until disease progression or 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
Pembrolizumab+Chemotherapy273
Placebo+Chemotherapy275

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Pembrolizumab+Chemotherapy10.5Not reported9.712.3Not reported
Placebo+Chemotherapy8.2Not reported6.38.5Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.47
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.71
    group Description
    Treatment comparison (hazard ratio \[HR\]) was based on Cox regression model with Efron's method of tie handling with treatment as a covariate stratified by metastatic at initial diagnosis (FIGO \[2009\] stage IVB) (yes or no), bevacizumab use (yes or no), and PD-L1 status (CPS\<1, CPS 1 to \<10, or CPS ≥10).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0001
    p Value Comment
    No formal hypothesis testing performed; nominal p-value provided for treatment comparison.
    param Type
    Hazard Ratio (HR)
    param Value
    0.58
    statistical Comment
    Nominal p-value based on log-rank test stratified by metastatic at initial diagnosis (FIGO \[2009\] stage IVB), bevacizumab use, and PD-L1 status.
    statistical Method
    Stratified Log-Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.47
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.71
    group Description
    Treatment comparison (hazard ratio \[HR\]) was based on Cox regression model with Efron's method of tie handling with treatment as a covariate stratified by metastatic at initial diagnosis (FIGO \[2009\] stage IVB) (yes or no), bevacizumab use (yes or no), and PD-L1 status (CPS\<1, CPS 1 to \<10, or CPS ≥10).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0001
    p Value Comment
    No formal hypothesis testing performed; nominal p-value provided for treatment comparison.
    param Type
    Hazard Ratio (HR)
    param Value
    0.58
    statistical Comment
    Nominal p-value based on log-rank test stratified by metastatic at initial diagnosis (FIGO \[2009\] stage IVB), bevacizumab use, and PD-L1 status.
    statistical Method
    Stratified Log-Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        9.7
        upper Limit
        12.3
        value
        10.5
      2. group Id
        OG001
        lower Limit
        6.3
        upper Limit
        8.5
        value
        8.2
denoms
  1. counts
    1. group Id
      OG000
      value
      273
    2. group Id
      OG001
      value
      275
    units
    Participants
description
PFS was defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, PD was defined as ≥ 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. Note: The appearance of one or more new lesions was also considered PD. The PFS per RECIST 1.1 as assessed by Investigator for all randomized participants with PD-L1 CPS ≥1 is presented.
dispersion Type
95% Confidence Interval
groups
  1. description
    On Day 1 of each 21-day cycle, participants received an intravenous (IV) infusion of pembrolizumab 200 mg for up to 35 cycles (up to approximately 2 years) PLUS Investigator choice of chemotherapy for up to 6 cycles (paclitaxel 175 mg/m\^2 PLUS cisplatin 50 mg/m\^2 WITH or WITHOUT bevacizumab 15 mg/kg per local label OR paclitaxel 175 mg/m\^2 PLUS carboplatin Area Under the Curve (AUC) 5 for up to 6 cycles, WITH or WITHOUT bevacizumab 15 mg/kg per local label). All treatments were administered until disease progression or toxicity. Eligible participants who stopped the initial course of pembrolizumab with Stable Disease (SD) or better but progressed after discontinuation may have been able to initiate a second course of pembrolizumab for up to 17 cycles (up to approximately 1 additional year) at the investigator's discretion.
    id
    OG000
    title
    Pembrolizumab+Chemotherapy
  2. description
    On Day 1 of each 21-day cycle, participants received an IV infusion of placebo (Normal Saline or Dextrose solution) for up to 35 cycles (up to approximately 2 years) PLUS Investigator choice of chemotherapy for up to 6 cycles (paclitaxel 175 mg/m\^2 PLUS cisplatin 50 mg/m\^2 WITH or WITHOUT bevacizumab 15 mg/kg per local label OR paclitaxel 175 mg/m\^2 PLUS carboplatin AUC 5 for up to 6 cycles, WITH or WITHOUT bevacizumab 15 mg/kg per local label). All treatments were administered until disease progression or toxicity.
    id
    OG001
    title
    Placebo+Chemotherapy
param Type
MEDIAN
population Description
All randomized participants with PD-L1 CPS ≥1 based on the treatment group to which they were randomized.
reporting Status
POSTED
time Frame
Up to approximately 46 months
title
Progression-free Survival (PFS) Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator in Participants With Programmed Cell Death-Ligand 1 (PD-L1) Combined Positive Score (CPS) ≥1
type
PRIMARY
unit Of Measure
Months

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Preserved source evidence · Not medical advice