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NCT03580655 · OUTCOME

Mean Change From Baseline in AdvSM-SAF Skin and Gastrointestinal Domain Scores at Month 10

(PATHFINDER) Study to Evaluate Efficacy and Safety of Avapritinib (BLU-285), A Selective KIT Mutation-targeted Tyrosine Kinase Inhibitor, in Patients With Advanced Systemic Mastocytosis · Source last updated 2026-04-24

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

Measure
MEAN
Unit
Score on a Scale
Interval / dispersion
Standard Deviation
Time frame
Baseline, Month 10

What was measured

The AdvSM-SAF is a 10-item questionnaire that assesses symptoms and functional domains specific to AdvSM. Eight symptoms are scored on a scale of 0 to 10 for severity and 2 symptoms (vomiting and diarrhea) are scored for number of episodes. The skin domain is scored on a scale of 0-30, where 0 represents an absence of symptoms and 30 the most severe symptom experience. Similarly, the gastrointestinal domain is scored on a scale of 0-40, where 0 represents an absence of symptoms and 40 the most severe symptom experience. Skin and gastrointestinal domain scores were generated based on average scores for each 7-day period. An increase in score represents a worse symptoms outcome. Participants completed the AdvSM-SAF daily using an eDiary.

Analysis population: Safety Population: all participants who received ≥1 dose of avapritinib. Here, 'Number Analyzed' signifies those participants evaluable for this outcome measure at the specified timepoint.

Groups in this outcome

Avapritinib

Avapritinib was administered once daily as an immediate-release tablet, orally, in 28-day cycles.

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

Analysis denominator · Participants

GroupSource count
Avapritinib93

Reported measurements

Skin Domain
Values in Score on a Scale · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Avapritinib-2.525.362Not reportedNot reportedNot reported
Gastrointestinal Domain
Values in Score on a Scale · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Avapritinib-2.815.172Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        5.362
        value
        -2.52
    title
    Skin Domain
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        5.172
        value
        -2.81
    title
    Gastrointestinal Domain
denoms
  1. counts
    1. group Id
      OG000
      value
      93
    units
    Participants
description
The AdvSM-SAF is a 10-item questionnaire that assesses symptoms and functional domains specific to AdvSM. Eight symptoms are scored on a scale of 0 to 10 for severity and 2 symptoms (vomiting and diarrhea) are scored for number of episodes. The skin domain is scored on a scale of 0-30, where 0 represents an absence of symptoms and 30 the most severe symptom experience. Similarly, the gastrointestinal domain is scored on a scale of 0-40, where 0 represents an absence of symptoms and 40 the most severe symptom experience. Skin and gastrointestinal domain scores were generated based on average scores for each 7-day period. An increase in score represents a worse symptoms outcome. Participants completed the AdvSM-SAF daily using an eDiary.
dispersion Type
Standard Deviation
groups
  1. description
    Avapritinib was administered once daily as an immediate-release tablet, orally, in 28-day cycles.
    id
    OG000
    title
    Avapritinib
param Type
MEAN
population Description
Safety Population: all participants who received ≥1 dose of avapritinib. Here, 'Number Analyzed' signifies those participants evaluable for this outcome measure at the specified timepoint.
reporting Status
POSTED
time Frame
Baseline, Month 10
title
Mean Change From Baseline in AdvSM-SAF Skin and Gastrointestinal Domain Scores at Month 10
type
SECONDARY
unit Of Measure
Score on a Scale

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

Preserved source evidence · Not medical advice