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NCT04222972 · OUTCOME

Arm A vs Arm B: Duration of Response (DOR)

A Study of Pralsetinib Versus Standard of Care for First-Line Treatment of Advanced Non-Small Cell Lung Cancer (NSCLC) · Source last updated 2026-03-05

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

Measure
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
Up to approximately 50 months

What was measured

DOR was defined as the time from the first occurrence of a documented objective response (OR) to PD or death from any cause, whichever occurred first, as determined by the investigator with the use of RECIST v1.1. CR was defined as disappearance of all target lesions or any pathological lymph nodes must have reduction in short axis to \< 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints, including baseline. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. K-M method was used to estimate median DOR. 95% CI for median was computed using the method of Brookmeyer and Crowley.

Analysis population: ITT population included all randomized participants whether or not the assigned study treatment is received. Overall number analyzed is the number of participants with an objective response of CR or PR. As specified in the protocol, assessment of this outcome measure was limited to Arms A and B, as the objective was to compare pralsetinib with SOC platinum-containing anticancer treatment regimens.

Groups in this outcome

Arm A: Treatment Period- SOC

Participants received platinum-containing anticancer treatment regimens (with or without pembrolizumab) at the study center as chosen by the treating investigator based on NSCLC histology. Participants with NSCLC of non-squamous histology received carboplatin + pemetrexed or cisplatin + pemetrexed or pembrolizumab + carboplatin + pemetrexed or pembrolizumab + cisplatin + pemetrexed. Participants with NSCLC of squamous histology received carboplatin or cisplatin + gemcitabine or carboplatin + paclitaxel/nab-paclitaxel + pembrolizumab until PD or for up to a maximum of 2 years.

Arm B: Treatment Period- Pralsetinib

Participants received pralsetinib, 400 mg, QD on Day 1 of each cycle until PD, PTAP, pralsetinib was no longer available, unacceptable toxicity, non-compliance, withdrawal of consent, closure of the study by the sponsor, or death, whichever occurred first (cycle length=21 days).

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

Analysis denominator · Participants

GroupSource count
Arm A: Treatment Period- SOC47
Arm B: Treatment Period- Pralsetinib72

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm A: Treatment Period- SOC9.7Not reported7.615.9Not reported
Arm B: Treatment Period- Pralsetinib20.6Not reported17.231.8Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    0.28
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.80
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0043
    param Type
    Hazard Ratio (HR)
    param Value
    0.48
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.28
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.80
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0043
    param Type
    Hazard Ratio (HR)
    param Value
    0.48
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.6
        upper Limit
        15.9
        value
        9.7
      2. group Id
        OG001
        lower Limit
        17.2
        upper Limit
        31.8
        value
        20.6
denoms
  1. counts
    1. group Id
      OG000
      value
      47
    2. group Id
      OG001
      value
      72
    units
    Participants
description
DOR was defined as the time from the first occurrence of a documented objective response (OR) to PD or death from any cause, whichever occurred first, as determined by the investigator with the use of RECIST v1.1. CR was defined as disappearance of all target lesions or any pathological lymph nodes must have reduction in short axis to \< 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints, including baseline. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. K-M method was used to estimate median DOR. 95% CI for median was computed using the method of Brookmeyer and Crowley.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received platinum-containing anticancer treatment regimens (with or without pembrolizumab) at the study center as chosen by the treating investigator based on NSCLC histology. Participants with NSCLC of non-squamous histology received carboplatin + pemetrexed or cisplatin + pemetrexed or pembrolizumab + carboplatin + pemetrexed or pembrolizumab + cisplatin + pemetrexed. Participants with NSCLC of squamous histology received carboplatin or cisplatin + gemcitabine or carboplatin + paclitaxel/nab-paclitaxel + pembrolizumab until PD or for up to a maximum of 2 years.
    id
    OG000
    title
    Arm A: Treatment Period- SOC
  2. description
    Participants received pralsetinib, 400 mg, QD on Day 1 of each cycle until PD, PTAP, pralsetinib was no longer available, unacceptable toxicity, non-compliance, withdrawal of consent, closure of the study by the sponsor, or death, whichever occurred first (cycle length=21 days).
    id
    OG001
    title
    Arm B: Treatment Period- Pralsetinib
param Type
MEDIAN
population Description
ITT population included all randomized participants whether or not the assigned study treatment is received. Overall number analyzed is the number of participants with an objective response of CR or PR. As specified in the protocol, assessment of this outcome measure was limited to Arms A and B, as the objective was to compare pralsetinib with SOC platinum-containing anticancer treatment regimens.
reporting Status
POSTED
time Frame
Up to approximately 50 months
title
Arm A vs Arm B: Duration of Response (DOR)
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice