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NCT01995513 · OUTCOME

Rate of Pain Progression

Safety Study of Continued Enzalutamide Treatment In Prostate Cancer Patients · Source last updated 2023-09-18

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
Month 6

What was measured

Rate of pain progression was defined as percentage of participants with an increase of \>=30% from baseline in the mean Brief Pain Inventory-Short Form (BPI-SF) pain intensity item scores of 4 items assessing average, worst, least, and intermediate pain severity. BPI-SF is an 11-item self-report questionnaire that is designed to assess the severity and impact of pain on daily functions of a participant. BPI-sf includes 4 questions that assess pain intensity (worst, least, average, right now) and 7 questions that assess impact of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). BPI-sf score range for each item was from 0=no pain to 10=worst possible pain. Total score was reported as average of individual questions ranges from 0 to 10, where lower scores indicated less pain or less pain interference.

Analysis population: ITT population included all participants randomly assigned to study treatment. Here, N signifies those participants who were evaluable for this outcome measure.

Groups in this outcome

Enzalutamide 160mg+Abiraterone 1000mg+ Prednisone 10mg

Participants with confirmed PSA progression at Week 21 in open label period, received enzalutamide 160 mg as four 40 mg capsules, orally once daily along with abiraterone 1000 mg as four 250-mg tablets, orally once daily and prednisone 5 mg tablet, orally twice daily in double blind treatment period, up to disease progression (as defined by radiographic imaging or unequivocal clinical progression or death on study), intolerable toxicity, or participant withdrawal, whichever occurred first. Participants were followed up for 16 weeks at 4-week interval after discontinuation of study drug for survival and subsequent antineoplastic therapy for prostate cancer.

Placebo+Abiraterone 1000mg+ Prednisone 10mg

Participants with confirmed PSA progression at Week 21 in open label period, received placebo matched to enzalutamide as four 40 mg capsules, orally once daily along with abiraterone 1000 mg as four 250-mg tablets, orally once daily and prednisone 5 mg tablet, orally twice daily in double blind treatment period, up to disease progression (as defined by radiographic imaging or unequivocal clinical progression or death on study), intolerable toxicity, or participant withdrawal, whichever occurred first. Participants were followed up for 16 weeks at 4-week interval after discontinuation of study drug for survival and subsequent antineoplastic therapy for prostate cancer.

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

Analysis denominator · Participants

GroupSource count
Enzalutamide 160mg+Abiraterone 1000mg+ Prednisone 10mg58
Placebo+Abiraterone 1000mg+ Prednisone 10mg59

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Enzalutamide 160mg+Abiraterone 1000mg+ Prednisone 10mg36.2Not reported24.049.9Not reported
Placebo+Abiraterone 1000mg+ Prednisone 10mg27.1Not reported16.440.3Not reported

Source statistical analyses

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

  1. ci Lower Limit
    -7.69
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    25.87
    estimate Comment
    Difference in Progression Rate was based upon normal approximation.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    0.2963
    p Value Comment
    P-value was based on Cochran-Mantel-Haenszel mean score test stratified by PSA response (\>=0% to \<30% vs \>=30%) at Week 13 in the open-label period.
    param Type
    Difference in Progression Rate
    param Value
    9.09
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    -7.69
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    25.87
    estimate Comment
    Difference in Progression Rate was based upon normal approximation.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    0.2963
    p Value Comment
    P-value was based on Cochran-Mantel-Haenszel mean score test stratified by PSA response (\>=0% to \<30% vs \>=30%) at Week 13 in the open-label period.
    param Type
    Difference in Progression Rate
    param Value
    9.09
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        24.0
        upper Limit
        49.9
        value
        36.2
      2. group Id
        OG001
        lower Limit
        16.4
        upper Limit
        40.3
        value
        27.1
denoms
  1. counts
    1. group Id
      OG000
      value
      58
    2. group Id
      OG001
      value
      59
    units
    Participants
description
Rate of pain progression was defined as percentage of participants with an increase of \>=30% from baseline in the mean Brief Pain Inventory-Short Form (BPI-SF) pain intensity item scores of 4 items assessing average, worst, least, and intermediate pain severity. BPI-SF is an 11-item self-report questionnaire that is designed to assess the severity and impact of pain on daily functions of a participant. BPI-sf includes 4 questions that assess pain intensity (worst, least, average, right now) and 7 questions that assess impact of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). BPI-sf score range for each item was from 0=no pain to 10=worst possible pain. Total score was reported as average of individual questions ranges from 0 to 10, where lower scores indicated less pain or less pain interference.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants with confirmed PSA progression at Week 21 in open label period, received enzalutamide 160 mg as four 40 mg capsules, orally once daily along with abiraterone 1000 mg as four 250-mg tablets, orally once daily and prednisone 5 mg tablet, orally twice daily in double blind treatment period, up to disease progression (as defined by radiographic imaging or unequivocal clinical progression or death on study), intolerable toxicity, or participant withdrawal, whichever occurred first. Participants were followed up for 16 weeks at 4-week interval after discontinuation of study drug for survival and subsequent antineoplastic therapy for prostate cancer.
    id
    OG000
    title
    Enzalutamide 160mg+Abiraterone 1000mg+ Prednisone 10mg
  2. description
    Participants with confirmed PSA progression at Week 21 in open label period, received placebo matched to enzalutamide as four 40 mg capsules, orally once daily along with abiraterone 1000 mg as four 250-mg tablets, orally once daily and prednisone 5 mg tablet, orally twice daily in double blind treatment period, up to disease progression (as defined by radiographic imaging or unequivocal clinical progression or death on study), intolerable toxicity, or participant withdrawal, whichever occurred first. Participants were followed up for 16 weeks at 4-week interval after discontinuation of study drug for survival and subsequent antineoplastic therapy for prostate cancer.
    id
    OG001
    title
    Placebo+Abiraterone 1000mg+ Prednisone 10mg
param Type
NUMBER
population Description
ITT population included all participants randomly assigned to study treatment. Here, N signifies those participants who were evaluable for this outcome measure.
reporting Status
POSTED
time Frame
Month 6
title
Rate of Pain Progression
type
SECONDARY
unit Of Measure
percentage of participants

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

Preserved source evidence · Not medical advice