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NCT03389802 · OUTCOME

Mutation Burden Based on TCR Sequencing

Phase I Study of APX005M in Pediatric Central Nervous System Tumors · Source last updated 2026-08-13

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

Measure
MEAN
Unit
Clonotyes
Interval / dispersion
Standard Deviation
Time frame
Day 0 and Days 7, 14, and 21 after the start of treatment

What was measured

Mutation burden as detected by comparing the TCR sequencing of tumor tissue and/or PBMC. Mean numbers of clonotypes were reported by time point with standard deviations.

Analysis population: Only 4 Stratum 2 patients had data available for this analysis.

Groups in this outcome

Stratum 1, Dose Level 1

Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.1 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.

Stratum 1, Dose Level 2

Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.3 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.

Stratum 1, Dose Level 3

Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.6 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.

Stratum 2, Dose Level 2

Patients with newly diagnosed diffuse intrinsic pontine glioma (DIPG) received APX005M on day 1 of each 21-day course at 0.3 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.

Stratum 2, Dose Level 3

Patients with newly diagnosed diffuse intrinsic pontine glioma (DIPG) received APX005M on day 1 of each 21-day course at 0.6 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.

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

Analysis denominator · Participants

GroupSource count
Stratum 1, Dose Level 10
Stratum 1, Dose Level 20
Stratum 1, Dose Level 30
Stratum 2, Dose Level 24
Stratum 2, Dose Level 30

Reported measurements

Day 0
Values in Clonotyes · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Stratum 2, Dose Level 254688.2548633.55Not reportedNot reportedNot reported
Day 7
Values in Clonotyes · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Stratum 2, Dose Level 2159239.7547953.53Not reportedNot reportedNot reported
Day 14
Values in Clonotyes · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Stratum 2, Dose Level 255328.2543692.86Not reportedNot reportedNot reported
Day 21
Values in Clonotyes · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Stratum 2, Dose Level 2127911.25135922.69Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG003
        spread
        48633.55
        value
        54688.25
    title
    Day 0
  2. categories
    1. measurements
      1. group Id
        OG003
        spread
        47953.53
        value
        159239.75
    title
    Day 7
  3. categories
    1. measurements
      1. group Id
        OG003
        spread
        43692.86
        value
        55328.25
    title
    Day 14
  4. categories
    1. measurements
      1. group Id
        OG003
        spread
        135922.69
        value
        127911.25
    title
    Day 21
denoms
  1. counts
    1. group Id
      OG000
      value
      0
    2. group Id
      OG001
      value
      0
    3. group Id
      OG002
      value
      0
    4. group Id
      OG003
      value
      4
    5. group Id
      OG004
      value
      0
    units
    Participants
description
Mutation burden as detected by comparing the TCR sequencing of tumor tissue and/or PBMC. Mean numbers of clonotypes were reported by time point with standard deviations.
dispersion Type
Standard Deviation
groups
  1. description
    Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.1 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.
    id
    OG000
    title
    Stratum 1, Dose Level 1
  2. description
    Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.3 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.
    id
    OG001
    title
    Stratum 1, Dose Level 2
  3. description
    Patients with recurrent or refractory primary malignant CNS tumors received APX005M on day 1 of each 21-day course at 0.6 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.
    id
    OG002
    title
    Stratum 1, Dose Level 3
  4. description
    Patients with newly diagnosed diffuse intrinsic pontine glioma (DIPG) received APX005M on day 1 of each 21-day course at 0.3 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.
    id
    OG003
    title
    Stratum 2, Dose Level 2
  5. description
    Patients with newly diagnosed diffuse intrinsic pontine glioma (DIPG) received APX005M on day 1 of each 21-day course at 0.6 mg/kg for up to 36 courses or until disease progression, unacceptable toxicity, or death.
    id
    OG004
    title
    Stratum 2, Dose Level 3
param Type
MEAN
population Description
Only 4 Stratum 2 patients had data available for this analysis.
reporting Status
POSTED
time Frame
Day 0 and Days 7, 14, and 21 after the start of treatment
title
Mutation Burden Based on TCR Sequencing
type
OTHER_PRE_SPECIFIED
unit Of Measure
Clonotyes

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Preserved source evidence · Not medical advice