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NCT02576977 · OUTCOME

Overall Response Rate (ORR) Evaluated According to the IMWG Response Criteria by CAC Blinded Central Review

Study of Pomalidomide and Low Dose Dexamethasone With or Without Pembrolizumab (MK-3475) in Refractory or Relapsed and Refractory Multiple Myeloma (rrMM) (MK-3475-183/KEYNOTE-183) · Source last updated 2021-10-08

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 approximately 30 months

What was measured

ORR was defined as the percentage of the participants in the analysis population who achieved at least a partial response (stringent complete response \[sCR\]+complete response \[CR\]+very good partial response \[VGPR\]+partial response \[PR\]) according to the IMWG. CR = negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND \<5% plasmacytomas in the bone marrow; sCR=stringent complete response, CR as above PLUS normal serum free light-chain (FLC) assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence; VGPR = serum and urine M-component detectable by immunofixation but not on electrophoresis OR ≥ 90% reduction in serum M-component plus urine M-component \<100 mg/24 hr; PR = ≥50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by ≥90% or to \<200 mg/24 hours. 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+Pomalidomide+Dexamethasone

Participants receive pembrolizumab 200 mg intravenously (IV) on Day 1 every 3 weeks (Q3W) PLUS pomalidomide 4 mg orally (PO) on Days 1 to 21 of each 28-day cycle PLUS dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle.

Standard of Care (SOC) Pomalidomide+Dexamethasone

Participants receive pomalidomide 4 mg PO on Days 1 to 21 of each 28-day cycle PLUS dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle.

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+Pomalidomide+Dexamethasone126
Standard of Care (SOC) Pomalidomide+Dexamethasone125

Reported measurements

Source class 1
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Pembrolizumab+Pomalidomide+Dexamethasone37.3Not reported28.946.4Not reported
Standard of Care (SOC) Pomalidomide+Dexamethasone42.4Not reported33.651.6Not reported

Source statistical analyses

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

  1. ci Lower Limit
    -17.1
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.9
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    other Analysis Description
    Based on Miettinen \& Nurminen method stratified by disease status (refractory vs. sensitive to Lenalidomide) and Lines of previous treatments (two vs. three or more); If there were no participants in one of the treatment groups involved in a comparison for a particular stratum, then that stratum was excluded from the treatment comparison.
    p Value
    0.79921
    param Type
    Difference in % vs. SOC
    param Value
    -5.2
    statistical Method
    Miettinen & Nurminen method
Complete source fields
analyses
  1. ci Lower Limit
    -17.1
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.9
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    other Analysis Description
    Based on Miettinen \& Nurminen method stratified by disease status (refractory vs. sensitive to Lenalidomide) and Lines of previous treatments (two vs. three or more); If there were no participants in one of the treatment groups involved in a comparison for a particular stratum, then that stratum was excluded from the treatment comparison.
    p Value
    0.79921
    param Type
    Difference in % vs. SOC
    param Value
    -5.2
    statistical Method
    Miettinen & Nurminen method
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        28.9
        upper Limit
        46.4
        value
        37.3
      2. group Id
        OG001
        lower Limit
        33.6
        upper Limit
        51.6
        value
        42.4
denoms
  1. counts
    1. group Id
      OG000
      value
      126
    2. group Id
      OG001
      value
      125
    units
    Participants
description
ORR was defined as the percentage of the participants in the analysis population who achieved at least a partial response (stringent complete response \[sCR\]+complete response \[CR\]+very good partial response \[VGPR\]+partial response \[PR\]) according to the IMWG. CR = negative immunofixation of serum and urine AND disappearance of any soft tissue plasmacytomas AND \<5% plasmacytomas in the bone marrow; sCR=stringent complete response, CR as above PLUS normal serum free light-chain (FLC) assay ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence; VGPR = serum and urine M-component detectable by immunofixation but not on electrophoresis OR ≥ 90% reduction in serum M-component plus urine M-component \<100 mg/24 hr; PR = ≥50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by ≥90% or to \<200 mg/24 hours. The database cutoff date was July 9, 2018.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants receive pembrolizumab 200 mg intravenously (IV) on Day 1 every 3 weeks (Q3W) PLUS pomalidomide 4 mg orally (PO) on Days 1 to 21 of each 28-day cycle PLUS dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle.
    id
    OG000
    title
    Pembrolizumab+Pomalidomide+Dexamethasone
  2. description
    Participants receive pomalidomide 4 mg PO on Days 1 to 21 of each 28-day cycle PLUS dexamethasone 40 mg PO on Days 1, 8, 15 and 22 of each 28-day cycle.
    id
    OG001
    title
    Standard of Care (SOC) Pomalidomide+Dexamethasone
param Type
NUMBER
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
Overall Response Rate (ORR) Evaluated According to the IMWG Response Criteria by CAC Blinded Central Review
type
SECONDARY
unit Of Measure
Percentage of participants

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Preserved source evidence · Not medical advice