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NCT02970318 · OUTCOME

Progression-free Survival (PFS) Per Independent Review Committee (IRC) Assessment

A Study of Acalabrutinib vs Investigator's Choice of Idelalisib Plus Rituximab or Bendamustine Plus Rituximab in R/R CLL · Source last updated 2026-07-24

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
IRC assessments from randomization date until disease progression or death or IRC discontinuation on 15Jan2019 (as IA per this data cutoff showed crossing superiority boundary) whichever came first, up to 22 months of follow-up

What was measured

To evaluate the efficacy of acalabrutinib monotherapy (Arm A) compared with idelalisib/rituximab or bendamustine/rituximab (Arm B) based on Independent Review Committee (IRC) assessment of progression-free survival (PFS) per International Workshop on Chronic Lymphocytic Leukemia (IWCLL) 2008 criteria (Hallek 2008) with incorporation of the clarification for treatment-related lymphocytosis (Cheson 2012) hereafter referred to as IWCLL 2008 criteria in subjects with relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL). As planned and reported in the interim clinical study report (dated 17 July 2019), because the study did cross the boundary at interim analysis. IRC assessments were discontinued after the interim analysis. All IRC-related efficacy analyses in this clinical study report were based on the interim analysis data cutoff date of 15 January 2019. All other efficacy analyses were based on the final analysis data cutoff date of 03 September 2021.

Analysis population: Intent-to-treat population including all randomized participants

Groups in this outcome

Arm A: Acalabrutinib Monotherapy

Acalabrutinib 100 mg orally twice a day

Arm B: Investigators Choice

Idelalisib+Rituximab or Bendamustine + Retuximab

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: Acalabrutinib Monotherapy155
Arm B: Investigators Choice155

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm A: Acalabrutinib MonotherapyNANot reportedNANAKaplan-Meier Estimated Median PFS and 95% were not reached for Arm A.
Arm B: Investigators Choice16.5Not reported14.017.1Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.20
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.49
    estimate Comment
    Cox Proportional Hazard Model (Arm A vs. Arm B) stratified by factors as recorded in IXRS, i.e., presence of del17p (Yes/No), ECOG (0-1/2), # of prior therapies (1-3/4+).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0001
    p Value Comment
    Stratified by randomization stratification factors as recorded in IXRS, i.e., presence of del17p (Yes/No), ECOG (0-1/2), # of prior therapies (1-3/4+).
    param Type
    Hazard Ratio (HR)
    param Value
    0.31
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.20
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.49
    estimate Comment
    Cox Proportional Hazard Model (Arm A vs. Arm B) stratified by factors as recorded in IXRS, i.e., presence of del17p (Yes/No), ECOG (0-1/2), # of prior therapies (1-3/4+).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0001
    p Value Comment
    Stratified by randomization stratification factors as recorded in IXRS, i.e., presence of del17p (Yes/No), ECOG (0-1/2), # of prior therapies (1-3/4+).
    param Type
    Hazard Ratio (HR)
    param Value
    0.31
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. comment
        Kaplan-Meier Estimated Median PFS and 95% were not reached for Arm A.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. group Id
        OG001
        lower Limit
        14.0
        upper Limit
        17.1
        value
        16.5
denoms
  1. counts
    1. group Id
      OG000
      value
      155
    2. group Id
      OG001
      value
      155
    units
    Participants
description
To evaluate the efficacy of acalabrutinib monotherapy (Arm A) compared with idelalisib/rituximab or bendamustine/rituximab (Arm B) based on Independent Review Committee (IRC) assessment of progression-free survival (PFS) per International Workshop on Chronic Lymphocytic Leukemia (IWCLL) 2008 criteria (Hallek 2008) with incorporation of the clarification for treatment-related lymphocytosis (Cheson 2012) hereafter referred to as IWCLL 2008 criteria in subjects with relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL). As planned and reported in the interim clinical study report (dated 17 July 2019), because the study did cross the boundary at interim analysis. IRC assessments were discontinued after the interim analysis. All IRC-related efficacy analyses in this clinical study report were based on the interim analysis data cutoff date of 15 January 2019. All other efficacy analyses were based on the final analysis data cutoff date of 03 September 2021.
dispersion Type
95% Confidence Interval
groups
  1. description
    Acalabrutinib 100 mg orally twice a day
    id
    OG000
    title
    Arm A: Acalabrutinib Monotherapy
  2. description
    Idelalisib+Rituximab or Bendamustine + Retuximab
    id
    OG001
    title
    Arm B: Investigators Choice
param Type
MEDIAN
population Description
Intent-to-treat population including all randomized participants
reporting Status
POSTED
time Frame
IRC assessments from randomization date until disease progression or death or IRC discontinuation on 15Jan2019 (as IA per this data cutoff showed crossing superiority boundary) whichever came first, up to 22 months of follow-up
title
Progression-free Survival (PFS) Per Independent Review Committee (IRC) Assessment
type
PRIMARY
unit Of Measure
Months

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