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NCT01584648 · OUTCOME

Progression-Free Survival (PFS) as Assessed by the Investigator

A Study Comparing Trametinib and Dabrafenib Combination Therapy to Dabrafenib Monotherapy in Subjects With BRAF-mutant Melanoma · Source last updated 2021-02-17

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
From randomization until the earliest date of disease progression (PD) or death due to any cause (up to approximately 6 years)

What was measured

PFS is defined as the interval between the date of randomization and the earliest date of PD or death due to any cause. PD was based on radiographic or photographic evidence, and assessments were made by the investigator according to RECIST, version 1.1. PD is defined as at least a 20% increase in the sum of the diameters of target lesions, taking as a reference, the smallest sum of diameters recorded since the treatment started. In addition, the sum must have an absolute increase from nadir of 5 mm. The appearance of one or more new lesions, or the worsening of non-target lesions significant enough to require study treatment discontinuation, was also included as PD. Participants who received anti-cancer therapy prior to the date of documented events, were censored at the last adequate assessment prior to the initiation of therapy. If the participant did not have documented progression or death, PFS was censored at the date of the last adequate assessment.

Analysis population: Intent-to-Treat (ITT) Population was considered.

Groups in this outcome

Dabrafenib + Trametinib

Participants received dabrafenib 150 milligram (mg) HPMC capsules orally twice daily (BID), once in the morning and a second dose approximately 12 hours after the morning dose, and trametinib 2 mg once daily in the morning. Treatment was continued until disease progression, death, unacceptable toxicity, or withdrawal of consent.

Dabrafenib + Placebo

Participants received dabrafenib 150 mg HPMC capsules orally BID, once in the morning and a second dose approximately 12 hours after the morning dose, and trametinib placebo once daily in the morning. Treatment was continued until disease progression, death, unacceptable toxicity, or withdrawal of consent. Crossover to the combination therapy arm was allowed for subjects still receiving study treatment on the dabrafenib monotherapy arm after the positive result for the final OS analysis.

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

Analysis denominator · Participants

GroupSource count
Dabrafenib + Trametinib211
Dabrafenib + Placebo212

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Dabrafenib + Trametinib10.2Not reported8.112.8Not reported
Dabrafenib + Placebo8.8Not reported5.99.3Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.59
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.91
    estimate Comment
    Hazard ratios (HRs) were estimated using a Pike estimator.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    param Type
    Hazard Ratio (HR)
    param Value
    0.73
Complete source fields
analyses
  1. ci Lower Limit
    0.59
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.91
    estimate Comment
    Hazard ratios (HRs) were estimated using a Pike estimator.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    param Type
    Hazard Ratio (HR)
    param Value
    0.73
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        8.1
        upper Limit
        12.8
        value
        10.2
      2. group Id
        OG001
        lower Limit
        5.9
        upper Limit
        9.3
        value
        8.8
denoms
  1. counts
    1. group Id
      OG000
      value
      211
    2. group Id
      OG001
      value
      212
    units
    Participants
description
PFS is defined as the interval between the date of randomization and the earliest date of PD or death due to any cause. PD was based on radiographic or photographic evidence, and assessments were made by the investigator according to RECIST, version 1.1. PD is defined as at least a 20% increase in the sum of the diameters of target lesions, taking as a reference, the smallest sum of diameters recorded since the treatment started. In addition, the sum must have an absolute increase from nadir of 5 mm. The appearance of one or more new lesions, or the worsening of non-target lesions significant enough to require study treatment discontinuation, was also included as PD. Participants who received anti-cancer therapy prior to the date of documented events, were censored at the last adequate assessment prior to the initiation of therapy. If the participant did not have documented progression or death, PFS was censored at the date of the last adequate assessment.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received dabrafenib 150 milligram (mg) HPMC capsules orally twice daily (BID), once in the morning and a second dose approximately 12 hours after the morning dose, and trametinib 2 mg once daily in the morning. Treatment was continued until disease progression, death, unacceptable toxicity, or withdrawal of consent.
    id
    OG000
    title
    Dabrafenib + Trametinib
  2. description
    Participants received dabrafenib 150 mg HPMC capsules orally BID, once in the morning and a second dose approximately 12 hours after the morning dose, and trametinib placebo once daily in the morning. Treatment was continued until disease progression, death, unacceptable toxicity, or withdrawal of consent. Crossover to the combination therapy arm was allowed for subjects still receiving study treatment on the dabrafenib monotherapy arm after the positive result for the final OS analysis.
    id
    OG001
    title
    Dabrafenib + Placebo
param Type
MEDIAN
population Description
Intent-to-Treat (ITT) Population was considered.
reporting Status
POSTED
time Frame
From randomization until the earliest date of disease progression (PD) or death due to any cause (up to approximately 6 years)
title
Progression-Free Survival (PFS) as Assessed by the Investigator
type
PRIMARY
unit Of Measure
Months

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