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NCT01212991 · OUTCOME

Percentage of Patients With Prostate Specific Antigen (PSA) Response ≥ 50%

A Safety and Efficacy Study of Oral MDV3100 in Chemotherapy-Naive Patients With Progressive Metastatic Prostate Cancer · Source last updated 2020-03-17

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
During study period (up to 3 years)

What was measured

PSA response was defined as a ≥ 50% reduction in PSA from baseline to the lowest postbaseline PSA value and required confirmation by a consecutive assessment at least 3 weeks later. Patients were evaluable for PSA response rate if a patient had a PSA level measured at baseline and at least one postbaseline assessment.

Analysis population: Evaluable intent to treat (ITT) population - All patients randomly assigned to treatment with PSA values at baseline and at least one postbaseline assessment.

Groups in this outcome

Enzalutamide

Participants received enzalutamide 160 mg, administered as four 40-mg capsules, once per day by mouth.

Placebo

Participants received placebo, administered as four capsules, once per day by mouth.

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

Analysis denominator · Participants

GroupSource count
Enzalutamide854
Placebo777

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Enzalutamide78Not reported75.180.7Not reported
Placebo3.5Not reported2.35.0Not reported

Source statistical analyses

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

  1. ci Lower Limit
    71.45
    ci Pct Value
    95
    ci Upper Limit
    77.57
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    <0.0001
    p Value Comment
    The Holm step down method of multiple comparisons was used to maintain a study wide type I error of 5% for prespecified secondary efficacy analyses. The 2-sided type I error rate was 0.025 for this analysis.
    param Type
    Difference in response rates
    param Value
    74.51
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    71.45
    ci Pct Value
    95
    ci Upper Limit
    77.57
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    <0.0001
    p Value Comment
    The Holm step down method of multiple comparisons was used to maintain a study wide type I error of 5% for prespecified secondary efficacy analyses. The 2-sided type I error rate was 0.025 for this analysis.
    param Type
    Difference in response rates
    param Value
    74.51
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        75.1
        upper Limit
        80.7
        value
        78
      2. group Id
        OG001
        lower Limit
        2.3
        upper Limit
        5.0
        value
        3.5
denoms
  1. counts
    1. group Id
      OG000
      value
      854
    2. group Id
      OG001
      value
      777
    units
    Participants
description
PSA response was defined as a ≥ 50% reduction in PSA from baseline to the lowest postbaseline PSA value and required confirmation by a consecutive assessment at least 3 weeks later. Patients were evaluable for PSA response rate if a patient had a PSA level measured at baseline and at least one postbaseline assessment.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received enzalutamide 160 mg, administered as four 40-mg capsules, once per day by mouth.
    id
    OG000
    title
    Enzalutamide
  2. description
    Participants received placebo, administered as four capsules, once per day by mouth.
    id
    OG001
    title
    Placebo
param Type
NUMBER
population Description
Evaluable intent to treat (ITT) population - All patients randomly assigned to treatment with PSA values at baseline and at least one postbaseline assessment.
reporting Status
POSTED
time Frame
During study period (up to 3 years)
title
Percentage of Patients With Prostate Specific Antigen (PSA) Response ≥ 50%
type
SECONDARY
unit Of Measure
Percentage of Participants

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

Preserved source evidence · Not medical advice