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NCT02598661 · OUTCOME

Phase 2 and Phase 3: Maximum Observed Plasma Concentration (Cmax)

Study to Evaluate Imetelstat (GRN163L) in Participants With International Prognostic Scoring System (IPSS) Low or Intermediate-1 Risk Myelodysplastic Syndrome (MDS) · Source last updated 2026-07-17

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

Measure
MEAN
Unit
micrograms per milliliter (mcg/mL)
Interval / dispersion
Standard Deviation
Time frame
Pre-dose on Cycle 1 Day 1 and pre-dose on Day 1 of every 3 cycles from Cycle 4 up to Cycle 66 in Phase 2 and Cycle 34 in Phase 3 (each cycle length= 28 days)

What was measured

As pre-specified in the statistical analysis plan (SAP), participants in the imetelstat sodium arm group of Phase 2 and Phase 3 were pooled for pharmacokinetic (PK) data collection and analyses in this outcome measure. PK parameters were determined by population PK model.

Analysis population: PK Parameter Analysis Set included all densely, and sparsely sampled participants who had received at least 1 dose of imetelstat sodium and who had sufficient data to calculate PK parameters for plasma imetelstat sodium. Overall number of participants analyzed signifies those participants who were evaluable for this outcome measure.

Groups in this outcome

Phase 2 and Phase 3: Imetelstat Sodium

For Phase 2: Imetelstat sodium administered IV, at a starting dose of 7.5 mg/kg, every 4 weeks (on a 28-day cycle) until death, lost to follow-up, withdrawal of consent, or study termination whichever occurs first. Dose escalation to 9.4 mg/kg was allowed before Protocol Amendment 2. For Phase 3: Imetelstat sodium administered IV, at a starting dose of 7.5 mg/kg, every 4 weeks (on a 28-day cycle) until death, lost to follow-up, withdrawal of consent, or study termination whichever occurs first.

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

Analysis denominator · Participants

GroupSource count
Phase 2 and Phase 3: Imetelstat Sodium170

Reported measurements

Source class 1
Values in micrograms per milliliter (mcg/mL) · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Phase 2 and Phase 3: Imetelstat Sodium89.527.3Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        27.3
        value
        89.5
denoms
  1. counts
    1. group Id
      OG000
      value
      170
    units
    Participants
description
As pre-specified in the statistical analysis plan (SAP), participants in the imetelstat sodium arm group of Phase 2 and Phase 3 were pooled for pharmacokinetic (PK) data collection and analyses in this outcome measure. PK parameters were determined by population PK model.
dispersion Type
Standard Deviation
groups
  1. description
    For Phase 2: Imetelstat sodium administered IV, at a starting dose of 7.5 mg/kg, every 4 weeks (on a 28-day cycle) until death, lost to follow-up, withdrawal of consent, or study termination whichever occurs first. Dose escalation to 9.4 mg/kg was allowed before Protocol Amendment 2. For Phase 3: Imetelstat sodium administered IV, at a starting dose of 7.5 mg/kg, every 4 weeks (on a 28-day cycle) until death, lost to follow-up, withdrawal of consent, or study termination whichever occurs first.
    id
    OG000
    title
    Phase 2 and Phase 3: Imetelstat Sodium
param Type
MEAN
population Description
PK Parameter Analysis Set included all densely, and sparsely sampled participants who had received at least 1 dose of imetelstat sodium and who had sufficient data to calculate PK parameters for plasma imetelstat sodium. Overall number of participants analyzed signifies those participants who were evaluable for this outcome measure.
reporting Status
POSTED
time Frame
Pre-dose on Cycle 1 Day 1 and pre-dose on Day 1 of every 3 cycles from Cycle 4 up to Cycle 66 in Phase 2 and Cycle 34 in Phase 3 (each cycle length= 28 days)
title
Phase 2 and Phase 3: Maximum Observed Plasma Concentration (Cmax)
type
SECONDARY
unit Of Measure
micrograms per milliliter (mcg/mL)

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

Preserved source evidence · Not medical advice