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NCT03962543 · OUTCOME

Change From Baseline in Pain as Measured by the Pain Interference Index (PII) at Cycle 13.

MEK Inhibitor Mirdametinib (PD-0325901) in Patients With Neurofibromatosis Type 1 Associated Plexiform Neurofibromas · Source last updated 2026-07-10

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
LEAST_SQUARES_MEAN
Unit
units on a scale
Interval / dispersion
95% Confidence Interval
Time frame
Baseline and Cycle 13 (1 cycle = 28 days), up to 12 months

What was measured

The PII assesses relevant aspects of one's life, including pain interference with activities, spending time with family/friends, mood, sleep and attention. Participants ≥ 6 years of age complete a self-report, and parents/guardians of children aged 6-17 complete a parent proxy report. The recall period is 24 hours. The PII consists of 6 questions, each asking the responder to select one number from 0 to 6 that best describes how their/their proxy's pain has impacted various items over the past 24 hours with 0 representing "Not at all" and 6 representing "Completely". The mean of the completed items is taken as the PII score for a single assessment. The PII score presented each visit will be taken as the average of the PII scores over the 7 consecutive days up to and including visit day, with no transformation applied. The change from baseline is modelled using a mixed-model for repeated measures.

Analysis population: The Full Analysis Set patients eligible for the instrument at baseline.

Groups in this outcome

Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Self-Report

Patients self-reported results aged 6 to 17 years old at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily

Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Parent Proxy

Patients parent proxy results aged 6 to 17 years old at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily

Treatment Phase - Adult Cohort Mirdametinib (PD-0325901) - Self-Report

Patients self-reported results aged 18 years and above at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily

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

Analysis denominator · Participants

GroupSource count
Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Self-Report47
Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Parent Proxy47
Treatment Phase - Adult Cohort Mirdametinib (PD-0325901) - Self-Report58

Reported measurements

Source class 1
Values in units on a scale · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Self-Report-0.46Not reported-0.83-0.09Not reported
Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Parent Proxy-0.26Not reported-0.49-0.03Not reported
Treatment Phase - Adult Cohort Mirdametinib (PD-0325901) - Self-Report-0.70Not reported-1.02-0.38Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        -0.83
        upper Limit
        -0.09
        value
        -0.46
      2. group Id
        OG001
        lower Limit
        -0.49
        upper Limit
        -0.03
        value
        -0.26
      3. group Id
        OG002
        lower Limit
        -1.02
        upper Limit
        -0.38
        value
        -0.70
denoms
  1. counts
    1. group Id
      OG000
      value
      47
    2. group Id
      OG001
      value
      47
    3. group Id
      OG002
      value
      58
    units
    Participants
description
The PII assesses relevant aspects of one's life, including pain interference with activities, spending time with family/friends, mood, sleep and attention. Participants ≥ 6 years of age complete a self-report, and parents/guardians of children aged 6-17 complete a parent proxy report. The recall period is 24 hours. The PII consists of 6 questions, each asking the responder to select one number from 0 to 6 that best describes how their/their proxy's pain has impacted various items over the past 24 hours with 0 representing "Not at all" and 6 representing "Completely". The mean of the completed items is taken as the PII score for a single assessment. The PII score presented each visit will be taken as the average of the PII scores over the 7 consecutive days up to and including visit day, with no transformation applied. The change from baseline is modelled using a mixed-model for repeated measures.
dispersion Type
95% Confidence Interval
groups
  1. description
    Patients self-reported results aged 6 to 17 years old at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily
    id
    OG000
    title
    Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Self-Report
  2. description
    Patients parent proxy results aged 6 to 17 years old at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily
    id
    OG001
    title
    Treatment Phase - Pediatric Cohort Mirdametinib (PD-0325901) - Parent Proxy
  3. description
    Patients self-reported results aged 18 years and above at the time of informed consent. Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily
    id
    OG002
    title
    Treatment Phase - Adult Cohort Mirdametinib (PD-0325901) - Self-Report
param Type
LEAST_SQUARES_MEAN
population Description
The Full Analysis Set patients eligible for the instrument at baseline.
reporting Status
POSTED
time Frame
Baseline and Cycle 13 (1 cycle = 28 days), up to 12 months
title
Change From Baseline in Pain as Measured by the Pain Interference Index (PII) at Cycle 13.
type
SECONDARY
unit Of Measure
units on a scale

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