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NCT03462719 · OUTCOME

Overall Survival (OS)

A Study of the Combination of Ibrutinib Plus Venetoclax Versus Chlorambucil Plus Obinutuzumab for the First-line Treatment of Participants With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL) · Source last updated 2026-08-31

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 4 years 10 months

What was measured

OS is defined as the time from date of randomization to date of death from any cause.

Analysis population: The ITT analysis set included all randomized participants who were analyzed according to assigned treatment group, regardless of the actual treatment received. Here 'N' (number of participants analyzed) signifies number of participants who were evaluable for this outcome measure.

Groups in this outcome

Treatment Arm A (Ibrutinib + Venetoclax)

Participants received ibrutinib 420 milligrams (mg) orally once daily for 3 cycles (each cycle is of 28 days) followed by the combination of ibrutinib 420 mg and venetoclax 400 mg orally once daily for 12 cycles (including a 5-week venetoclax dose ramp up starting in cycle 4). Participants who subsequently developed independent review committee (IRC)-confirmed progressive disease (PD) and had active disease requiring treatment were eligible to participate in the Subsequent Therapy Phase and received single-agent ibrutinib until disease progression or unacceptable toxicity.

Treatment Arm B (Chlorambucil + Obinutuzumab)

Participants received chlorambucil 0.5 milligrams per kilogram (mg/kg) body weight orally once daily on Days 1 and 15 of Cycles 1 to 6 in combination with obinutuzumab 1000 mgs intravenously (IV) once daily on Days 1, 8, and 15 of Cycle 1 and Day 1 of Cycles 2 to 6 (each cycle is of 28 days). Participants who subsequently developed IRC-confirmed progressive disease (PD) and had active disease requiring treatment were eligible to participate in the Subsequent Therapy Phase and received single-agent ibrutinib until disease progression or unacceptable toxicity.

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

Analysis denominator · Participants

GroupSource count
Treatment Arm A (Ibrutinib + Venetoclax)17
Treatment Arm B (Chlorambucil + Obinutuzumab)36

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Treatment Arm A (Ibrutinib + Venetoclax)NANot reportedNANAHere "NA" indicates that median and 95% CI was not estimable due to insufficient number of events.
Treatment Arm B (Chlorambucil + Obinutuzumab)NANot reportedNANAHere "NA" indicates that median and 95% CI was not estimable due to insufficient number of events.
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        Here "NA" indicates that median and 95% CI was not estimable due to insufficient number of events.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. comment
        Here "NA" indicates that median and 95% CI was not estimable due to insufficient number of events.
        group Id
        OG001
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      17
    2. group Id
      OG001
      value
      36
    units
    Participants
description
OS is defined as the time from date of randomization to date of death from any cause.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received ibrutinib 420 milligrams (mg) orally once daily for 3 cycles (each cycle is of 28 days) followed by the combination of ibrutinib 420 mg and venetoclax 400 mg orally once daily for 12 cycles (including a 5-week venetoclax dose ramp up starting in cycle 4). Participants who subsequently developed independent review committee (IRC)-confirmed progressive disease (PD) and had active disease requiring treatment were eligible to participate in the Subsequent Therapy Phase and received single-agent ibrutinib until disease progression or unacceptable toxicity.
    id
    OG000
    title
    Treatment Arm A (Ibrutinib + Venetoclax)
  2. description
    Participants received chlorambucil 0.5 milligrams per kilogram (mg/kg) body weight orally once daily on Days 1 and 15 of Cycles 1 to 6 in combination with obinutuzumab 1000 mgs intravenously (IV) once daily on Days 1, 8, and 15 of Cycle 1 and Day 1 of Cycles 2 to 6 (each cycle is of 28 days). Participants who subsequently developed IRC-confirmed progressive disease (PD) and had active disease requiring treatment were eligible to participate in the Subsequent Therapy Phase and received single-agent ibrutinib until disease progression or unacceptable toxicity.
    id
    OG001
    title
    Treatment Arm B (Chlorambucil + Obinutuzumab)
param Type
MEDIAN
population Description
The ITT analysis set included all randomized participants who were analyzed according to assigned treatment group, regardless of the actual treatment received. Here 'N' (number of participants analyzed) signifies number of participants who were evaluable for this outcome measure.
reporting Status
POSTED
time Frame
Up to 4 years 10 months
title
Overall Survival (OS)
type
SECONDARY
unit Of Measure
Months

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

Preserved source evidence · Not medical advice