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NCT02579863 · OUTCOME

Progression Free Survival (PFS) Evaluated According to the International Myeloma Working Group (IMWG) Response Criteria 2011 by Clinical Adjudication Committee (CAC) Blinded Central Review

Study of Lenalidomide and Dexamethasone With or Without Pembrolizumab (MK-3475) in Participants With Newly Diagnosed Treatment Naive Multiple Myeloma (MK-3475-185/KEYNOTE-185) · Source last updated 2021-07-20

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 30 months

What was measured

PFS was defined as the time from randomization to the first documented disease progression (events of new bone lesions, soft tissue plasmacytomas or an increase in existing lesions, or death due to any cause). The median PFS was calculated from the product-limit (Kaplan-Meier) method for censored data. Due to the small number of events, the tail of the estimated survival distribution was close to the median for both arms. The higher variability of the tail estimates resulted in observing the median estimate in the experimental arm but not in the standard of care arm even when number of events in 2 arms were similar. The database cutoff date was July 9, 2018.

Analysis population: The analysis population included all randomized participants. Participants were included in the treatment group to which they were randomized.

Groups in this outcome

Pembrolizumab + Lenalidomide + Dexamethasone

Participants received pembrolizumab 200 mg intravenously (IV) on Day 1 of each 21-day cycle PLUS lenalidomide 25 mg orally (PO) on Days 1 to 21 of each 21-day treatment cycle, and dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle for up to 18 cycles.

Lenolidomide + Dexamethasone

Participants received lenalidomide 25 mg PO on Days 1 to 21 of each 21-day treatment cycle, and dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle for up to 18 cycles.

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 + Lenalidomide + Dexamethasone156
Lenolidomide + Dexamethasone154

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Pembrolizumab + Lenalidomide + Dexamethasone19.6Not reported15.3NAUpper Limit could not be estimated due to an insufficient number of events by the date of data cutoff.
Lenolidomide + DexamethasoneNANot reported15.5NAThe Median was not reached, and the Upper Limit could not be estimated due to insufficient number of events by the date of data cutoff.

Source statistical analyses

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

  1. ci Lower Limit
    0.56
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.45
    estimate Comment
    Based on Cox regression model with treatment as a covariate stratified by Age (\<75 years vs \>= 75 years) and ISS stage (I or II vs. III).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.33475
    param Type
    Hazard Ratio (HR)
    param Value
    0.90
    statistical Comment
    One-sided p-value based on Stratified log-rank test.
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.56
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.45
    estimate Comment
    Based on Cox regression model with treatment as a covariate stratified by Age (\<75 years vs \>= 75 years) and ISS stage (I or II vs. III).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.33475
    param Type
    Hazard Ratio (HR)
    param Value
    0.90
    statistical Comment
    One-sided p-value based on Stratified log-rank test.
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. comment
        Upper Limit could not be estimated due to an insufficient number of events by the date of data cutoff.
        group Id
        OG000
        lower Limit
        15.3
        upper Limit
        NA
        value
        19.6
      2. comment
        The Median was not reached, and the Upper Limit could not be estimated due to insufficient number of events by the date of data cutoff.
        group Id
        OG001
        lower Limit
        15.5
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      156
    2. group Id
      OG001
      value
      154
    units
    Participants
description
PFS was defined as the time from randomization to the first documented disease progression (events of new bone lesions, soft tissue plasmacytomas or an increase in existing lesions, or death due to any cause). The median PFS was calculated from the product-limit (Kaplan-Meier) method for censored data. Due to the small number of events, the tail of the estimated survival distribution was close to the median for both arms. The higher variability of the tail estimates resulted in observing the median estimate in the experimental arm but not in the standard of care arm even when number of events in 2 arms were similar. The database cutoff date was July 9, 2018.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received pembrolizumab 200 mg intravenously (IV) on Day 1 of each 21-day cycle PLUS lenalidomide 25 mg orally (PO) on Days 1 to 21 of each 21-day treatment cycle, and dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle for up to 18 cycles.
    id
    OG000
    title
    Pembrolizumab + Lenalidomide + Dexamethasone
  2. description
    Participants received lenalidomide 25 mg PO on Days 1 to 21 of each 21-day treatment cycle, and dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle for up to 18 cycles.
    id
    OG001
    title
    Lenolidomide + Dexamethasone
param Type
MEDIAN
population Description
The analysis population included all randomized participants. Participants were included in the treatment group to which they were randomized.
reporting Status
POSTED
time Frame
Up to approximately 30 months
title
Progression Free Survival (PFS) Evaluated According to the International Myeloma Working Group (IMWG) Response Criteria 2011 by Clinical Adjudication Committee (CAC) Blinded Central Review
type
PRIMARY
unit Of Measure
Months

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