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NCT03037385 · OUTCOME

Phase 2: Tlast

Phase 1/2 Study of the Highly-selective RET Inhibitor, Pralsetinib (BLU-667), in Participants With Thyroid Cancer, Non-Small Cell Lung Cancer, and Other Advanced Solid Tumors · Source last updated 2025-05-31

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

Measure
MEDIAN
Unit
hours
Interval / dispersion
Full Range
Time frame
Predose on 0.5, 1, 2, 4, 6, 8 and 24 hours postdose on Days 1 and 15 of Cycle 1 (1 cycle = 28 days)

What was measured

The maximum values for Tlast slightly exceed 24 hours because the analysis used the actual time, i.e., the duration between dosing and actual sample collection, rather than the nominal sampling time of 24 hours specified in the protocol. The timeframe has been given as per nominal sampling timepoints pre-specified in the protocol.

Analysis population: PK evaluable population included all participants who received at least one dose of pralsetinib and from whom at least one post dose PK sample was collected. Overall number analyzed is the number of participants with data available for analysis. Number analyzed is the number of participants with data available for analysis at the specified timepoint.

Groups in this outcome

RET- Fusion Positive NSCLC Participants

Participants who had RET-fusion positive NSCLC received pralsetinib, 400 mg orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.

Tumor-agnostic Participants

Participants who had RET-fusion positive NSCLC or TC, or RET-mutation positive MTC, each with different genetic mutations received pralsetinib, 400 mg orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.

RET-altered Solid Tumors Participants

Participants who had RET-altered (fusion or mutation) solid tumors previously treated with a selective RET TKI received pralsetinib, 400 mg, orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.

RET-mutation Positive Tumors Other Than MTC Participants

Participants who had RET-mutation positive solid tumors received Pralsetinib 400 mg, orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.

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

Analysis denominator · Participants

GroupSource count
RET- Fusion Positive NSCLC Participants98
Tumor-agnostic Participants5
RET-altered Solid Tumors Participants3
RET-mutation Positive Tumors Other Than MTC Participants4

Reported measurements

Cycle 1 Day 1

Analysis denominator · Participants

GroupSource count
RET- Fusion Positive NSCLC Participants98
Tumor-agnostic Participants5
RET-altered Solid Tumors Participants3
RET-mutation Positive Tumors Other Than MTC Participants4
Values in hours · Interval/dispersion: Full Range
GroupValueSpreadLowerUpperComment
RET- Fusion Positive NSCLC Participants23.9Not reported2.4024.8Not reported
Tumor-agnostic Participants8.00Not reported7.823.5Not reported
RET-altered Solid Tumors Participants23.10Not reported8.024.0Not reported
RET-mutation Positive Tumors Other Than MTC Participants8.05Not reported8.024.0Not reported
Cycle 1 Day 15

Analysis denominator · Participants

GroupSource count
RET- Fusion Positive NSCLC Participants87
Tumor-agnostic Participants5
RET-altered Solid Tumors Participants3
RET-mutation Positive Tumors Other Than MTC Participants4
Values in hours · Interval/dispersion: Full Range
GroupValueSpreadLowerUpperComment
RET- Fusion Positive NSCLC Participants23.8Not reported7.8026.5Not reported
Tumor-agnostic Participants23.70Not reported7.924.0Not reported
RET-altered Solid Tumors Participants24.00Not reported7.924.0Not reported
RET-mutation Positive Tumors Other Than MTC Participants24.00Not reported23.824.0Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        2.40
        upper Limit
        24.8
        value
        23.9
      2. group Id
        OG001
        lower Limit
        7.8
        upper Limit
        23.5
        value
        8.00
      3. group Id
        OG002
        lower Limit
        8.0
        upper Limit
        24.0
        value
        23.10
      4. group Id
        OG003
        lower Limit
        8.0
        upper Limit
        24.0
        value
        8.05
    denoms
    1. counts
      1. group Id
        OG000
        value
        98
      2. group Id
        OG001
        value
        5
      3. group Id
        OG002
        value
        3
      4. group Id
        OG003
        value
        4
      units
      Participants
    title
    Cycle 1 Day 1
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.80
        upper Limit
        26.5
        value
        23.8
      2. group Id
        OG001
        lower Limit
        7.9
        upper Limit
        24.0
        value
        23.70
      3. group Id
        OG002
        lower Limit
        7.9
        upper Limit
        24.0
        value
        24.00
      4. group Id
        OG003
        lower Limit
        23.8
        upper Limit
        24.0
        value
        24.00
    denoms
    1. counts
      1. group Id
        OG000
        value
        87
      2. group Id
        OG001
        value
        5
      3. group Id
        OG002
        value
        3
      4. group Id
        OG003
        value
        4
      units
      Participants
    title
    Cycle 1 Day 15
denoms
  1. counts
    1. group Id
      OG000
      value
      98
    2. group Id
      OG001
      value
      5
    3. group Id
      OG002
      value
      3
    4. group Id
      OG003
      value
      4
    units
    Participants
description
The maximum values for Tlast slightly exceed 24 hours because the analysis used the actual time, i.e., the duration between dosing and actual sample collection, rather than the nominal sampling time of 24 hours specified in the protocol. The timeframe has been given as per nominal sampling timepoints pre-specified in the protocol.
dispersion Type
Full Range
groups
  1. description
    Participants who had RET-fusion positive NSCLC received pralsetinib, 400 mg orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.
    id
    OG000
    title
    RET- Fusion Positive NSCLC Participants
  2. description
    Participants who had RET-fusion positive NSCLC or TC, or RET-mutation positive MTC, each with different genetic mutations received pralsetinib, 400 mg orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.
    id
    OG001
    title
    Tumor-agnostic Participants
  3. description
    Participants who had RET-altered (fusion or mutation) solid tumors previously treated with a selective RET TKI received pralsetinib, 400 mg, orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.
    id
    OG002
    title
    RET-altered Solid Tumors Participants
  4. description
    Participants who had RET-mutation positive solid tumors received Pralsetinib 400 mg, orally, QD until discontinuation due to toxicity, disease progression, or other reasons. This arm was specifically planned for reporting PK data.
    id
    OG003
    title
    RET-mutation Positive Tumors Other Than MTC Participants
param Type
MEDIAN
population Description
PK evaluable population included all participants who received at least one dose of pralsetinib and from whom at least one post dose PK sample was collected. Overall number analyzed is the number of participants with data available for analysis. Number analyzed is the number of participants with data available for analysis at the specified timepoint.
reporting Status
POSTED
time Frame
Predose on 0.5, 1, 2, 4, 6, 8 and 24 hours postdose on Days 1 and 15 of Cycle 1 (1 cycle = 28 days)
title
Phase 2: Tlast
type
SECONDARY
unit Of Measure
hours

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Preserved source evidence · Not medical advice