Venetoclax, Rituximab and Ibrutinib in TN Patients With CLL Undetectable Minimal Residual Disease (uMRD) in Treatment-naïve Patients With Chronic Lymphocytic Leukemia (CLL)

Sponsor
Paolo Ghia
Study ID
NCT04758975
Phase
PHASE2
Status
Recruiting
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Conditions

  • Chronic Lymphocytic Leukemia (CLL)

Eligibility Criteria

Sex
ALL
Age
18 Years - 65 Years
Healthy Volunteers
Not accepted

Interventions

  • Venetoclax — DRUG
    VENETOCLAX: Ramp-up than 400 mg QD
  • Rituximab — DRUG
    RITUXIMAB: Cycle 7 Day 1 375 mg/m2; Cycles 8-12 Day 1 500 mg/m2
  • Ibrutinib — DRUG
    IBRUTINIB 420 mg QD

Study Details

This is a Phase 2, multicenter, open-label uncontrolled interventional study aimed a determining therapeutic benefits of the addition of ibrutinib to 12 months of venetoclax (single-agent for 6 months then combined with rituximab for additional 6 months) in patients with treatment-naïve CLL based on a MRD-guided approach. Study treatment will be administered according to the following scheme: VENETOCLAX: Cycle 1 Day 1-Cycle 1 Day 28 Ramp-up with weekly dose escalation; Cycles 2-12: 400 mg QD RITUXIMAB: Cycle 7 Day 1 375 mg/m2; Cycles 8-12 Day 1 500 mg/m2 At the end of Cycle 12 the MRD status is checked: 3 consecutive uMRD in PB + 1 uMRD in BM at last assessment treatment discontinuation and follow-up At least 1 MRD+ sample in the last 3 assessments. Venetoclax 400 mg QD until uMRD or up to 24 months or unacceptable toxicity (whichever occurs first) in combination with IBRUTINIB 420 mg QD until uMRD or PD or unacceptable toxicity. Venetoclax will be administered orally once daily (QD) beginning with a dose-titration phase (Ramp-up Period). At Cycle 7 Day 1 rituximab will be added for up to 6 monthly cycles (Cycle 7 Day 1 rituximab 375 mg/m2, Cycles 8-12 Day 1 rituximab 500 mg/m2). At Cycle 12 Day 1, disease status, renal function and risk of bleeding will be assessed. Minimal residual disease (MRD) will be evaluated serially in both PB and, after 3 consecutive uMRD in PB, in BM. All subjects with uMRD (defined as those with MRD level \<10-4 in the PB in 3 consecutive assessments and in a BM aspirate) will discontinue venetoclax at the end of Cycle 12 (i.e. Cycle 12 Day 28). All subjects with detectable MRD (defined as those with MRD level in the PB and/or BM \>10-4) and patients with stable disease without any contraindications to ibrutinib will start treatment with ibrutinib. Ibrutinib will be administered at the standard dose in CLL (i.e. 420 mg QD). Venetoclax will be administered until confirmed uMRD (3 consecutive uMRD in PB, the last one with concomitant uMRD in BM), unacceptable toxicity or disease progression or for a maximum of 2 years and ibrutinib will be continued until unacceptable toxicity, confirmed uMRD or disease progression.

Key Dates

Start date
Sep 19, 2022
Status verified
Oct 2023
Primary completion
Dec 31, 2024
Completion
Dec 30, 2027

Study Design

Enrollment
55 participants (estimated)
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT

Arms

  • Experimental: Venetoclax + Rituximab +/- Ibrutinib
    VENETOCLAX: Cycle 1 Day 1-Cycle 1 Day 28 Ramp-up with weekly dose escalation; Cycles 2-12: 400 mg QD RITUXIMAB: Cycle 7 Day 1 375 mg/m2; Cycles 8-12 Day 1 500 mg/m2 At the end of Cycle 12 the MRD status is checked: 3 consecutive uMRD in PB + 1 uMRD in BM at last assessment treatment discontinuation and follow-up At least 1 MRD+ sample in the last 3 assessments venetoclax 400 mg QD until uMRD or up to 24 months or unacceptable toxicity (whichever occurs first) in combination with IBRUTINIB 420 mg QD until uMRD or PD or unacceptable toxicity

Primary Outcome Measure

uMRD (<10-4) by 6-color flow cytometry in the bone marrow [ Time Frame: 27 months ]

Central Contacts

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