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NCT03462719 · OUTCOME

Complete Response Rate (CRR)

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
NUMBER
Unit
Percentage of Participants
Interval / dispersion
95% Confidence Interval
Time frame
Up to 2 years 10 months

What was measured

Complete response rate is defined as the percentage of participants who achieved complete response or complete response with an incomplete marrow recovery (CRi) on or prior to initiation of subsequent anti-leukemic therapy per the IRC assessment. International Workshop on Chronic Lymphocytic Leukemia (iWCLL) 2008 criteria: CR- No lymphadenopathy and hepatosplenomegaly, no constitutional symptoms, neutrophils \>1.5\*10\^9/liter (L), platelets \>100\*10\^9/L, Hgb \>11 gram per deciliter (g/dL), absolute lymphocyte count \<4000/microliter (mcL) and normocellular bone marrow with \<30% lymphocytes and no B lymphoid nodules; CRi- CR with incomplete recovery of bone marrow.

Analysis population: The ITT analysis set included all randomized participants who were analyzed according to assigned treatment group, regardless of the actual treatment received.

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)106
Treatment Arm B (Chlorambucil + Obinutuzumab)105

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Treatment Arm A (Ibrutinib + Venetoclax)38.7Not reported29.448.0Not reported
Treatment Arm B (Chlorambucil + Obinutuzumab)11.4Not reported5.317.5Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        29.4
        upper Limit
        48.0
        value
        38.7
      2. group Id
        OG001
        lower Limit
        5.3
        upper Limit
        17.5
        value
        11.4
denoms
  1. counts
    1. group Id
      OG000
      value
      106
    2. group Id
      OG001
      value
      105
    units
    Participants
description
Complete response rate is defined as the percentage of participants who achieved complete response or complete response with an incomplete marrow recovery (CRi) on or prior to initiation of subsequent anti-leukemic therapy per the IRC assessment. International Workshop on Chronic Lymphocytic Leukemia (iWCLL) 2008 criteria: CR- No lymphadenopathy and hepatosplenomegaly, no constitutional symptoms, neutrophils \>1.5\*10\^9/liter (L), platelets \>100\*10\^9/L, Hgb \>11 gram per deciliter (g/dL), absolute lymphocyte count \<4000/microliter (mcL) and normocellular bone marrow with \<30% lymphocytes and no B lymphoid nodules; CRi- CR with incomplete recovery of bone marrow.
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
NUMBER
population Description
The ITT analysis set included all randomized participants who were analyzed according to assigned treatment group, regardless of the actual treatment received.
reporting Status
POSTED
time Frame
Up to 2 years 10 months
title
Complete Response Rate (CRR)
type
SECONDARY
unit Of Measure
Percentage of Participants

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

Preserved source evidence · Not medical advice