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NCT03389802 · OUTCOME

Maximum Tolerated Dose (MTD) and/or Recommended Phase II Dose (RP2D) of APX005M in Stratum 2

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
NUMBER
Unit
mg/kg
Interval / dispersion
Not reported
Time frame
6 weeks (first 2 courses of treatment)

What was measured

The starting dose level for Stratum 2 was one dose level below the RP2D determined in Stratum 1. If there were no dose-limiting toxicities in the first 3 patients enrolled on Stratum 2, then we escalated to the Stratum 1 RP2D and could treat 6 diffuse intrinsic pontine glioma (DIPG) patients simultaneously. The RP2D was defined as the dose level at which 6 patients were treated with no more than one dose-limiting toxicity. Stratum 2 patients were those with newly diagnosed diffuse intrinsic pontine glioma (DIPG).

Analysis population: Patients who were enrolled on Stratum 2 and were evaluable for dose-finding assessment were used to determine the MTD for Stratum 2. Of 11 patients enrolled on Stratum 2, all were evaluable for dose-finding assessment and used to determine the MTD for Stratum 2.

Groups in this outcome

Stratum 2

Newly diagnosed diffuse intrinsic pontine gliomas (DIPGs) patients treated with APX005M. The dose levels studied were 0.3 mg/kg (dose level 2) and 0.6 mg/kg (dose level 3). Dose level 2 was selected as the starting dose level for Stratum 2 as it was one dose level lower than the Stratum 1 MTD/RP2D. APX005M was administered at the assigned dose level every 21 days (3 weeks). Patients could receive APX005M for 36 courses (approximately 2 years) 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 211

Reported measurements

Source class 1
Values in mg/kg · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Stratum 20.3Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        0.3
denoms
  1. counts
    1. group Id
      OG000
      value
      11
    units
    Participants
description
The starting dose level for Stratum 2 was one dose level below the RP2D determined in Stratum 1. If there were no dose-limiting toxicities in the first 3 patients enrolled on Stratum 2, then we escalated to the Stratum 1 RP2D and could treat 6 diffuse intrinsic pontine glioma (DIPG) patients simultaneously. The RP2D was defined as the dose level at which 6 patients were treated with no more than one dose-limiting toxicity. Stratum 2 patients were those with newly diagnosed diffuse intrinsic pontine glioma (DIPG).
groups
  1. description
    Newly diagnosed diffuse intrinsic pontine gliomas (DIPGs) patients treated with APX005M. The dose levels studied were 0.3 mg/kg (dose level 2) and 0.6 mg/kg (dose level 3). Dose level 2 was selected as the starting dose level for Stratum 2 as it was one dose level lower than the Stratum 1 MTD/RP2D. APX005M was administered at the assigned dose level every 21 days (3 weeks). Patients could receive APX005M for 36 courses (approximately 2 years) or until disease progression, unacceptable toxicity or death.
    id
    OG000
    title
    Stratum 2
param Type
NUMBER
population Description
Patients who were enrolled on Stratum 2 and were evaluable for dose-finding assessment were used to determine the MTD for Stratum 2. Of 11 patients enrolled on Stratum 2, all were evaluable for dose-finding assessment and used to determine the MTD for Stratum 2.
reporting Status
POSTED
time Frame
6 weeks (first 2 courses of treatment)
title
Maximum Tolerated Dose (MTD) and/or Recommended Phase II Dose (RP2D) of APX005M in Stratum 2
type
PRIMARY
unit Of Measure
mg/kg

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice