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NCT04222972 · OUTCOME

Arm A vs Arm B: Treatment Period: Progression-free Survival (PFS)

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

PFS was defined as the time from randomization to the date of first documented PD as determined by the investigator with the use of Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1) or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints, including baseline. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of at least 5 millimeters (mm). Kaplan-Meier (K-M) method was used to estimate median PFS. 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 was received. 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, orally, 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- SOC113
Arm B: Treatment Period- Pralsetinib110

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm A: Treatment Period- SOC9.0Not reported7.111.5Not reported
Arm B: Treatment Period- Pralsetinib18.7Not reported11.125.2Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.42
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.84
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0027
    param Type
    Hazard Ratio (HR)
    param Value
    0.59
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.42
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.84
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0027
    param Type
    Hazard Ratio (HR)
    param Value
    0.59
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.1
        upper Limit
        11.5
        value
        9.0
      2. group Id
        OG001
        lower Limit
        11.1
        upper Limit
        25.2
        value
        18.7
denoms
  1. counts
    1. group Id
      OG000
      value
      113
    2. group Id
      OG001
      value
      110
    units
    Participants
description
PFS was defined as the time from randomization to the date of first documented PD as determined by the investigator with the use of Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1) or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints, including baseline. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of at least 5 millimeters (mm). Kaplan-Meier (K-M) method was used to estimate median PFS. 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, orally, 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 was received. 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: Treatment Period: Progression-free Survival (PFS)
type
PRIMARY
unit Of Measure
months

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