Clinical trial • Phase III • Oncology

Venetoclax for Chronic lymphocytic leukaemia | Small lymphocytic lymphoma

Phase III trial of Venetoclax for Chronic lymphocytic leukaemia | Small lymphocytic lymphoma.

Overview

Trial Therapeutic Area
Oncology
Trial Disease
Chronic lymphocytic leukaemia | Small lymphocytic lymphoma
Trial Stage
Phase III
Drug Modality
Small molecule | Monoclonal antibody

Key dates

Initial CTIS Submission Date
26-11-2024
First CTIS Authorization Date
27-03-2025

Trial design

Randomised, open-label, three-arm randomised comparison: arm a (venetoclax + obinutuzumab fixed-duration over 12 cycles): obinutuzumab intravenous on days 1 (and 2), 8 and 15 of cycle 1, and day 1 of cycles 2-6; venetoclax continuous daily starting day 22 of cycle 1 with weekly dose ramp-up from 20 mg to 400 mg over five weeks. arm b (venetoclax + pirtobrutinib fixed-duration over 15 cycles): pirtobrutinib started day 1 of cycle 1 and continued daily; venetoclax daily starting on day 1 of cycle 4 with weekly ramp-up from 20 mg to 400 mg over five weeks. arm c (venetoclax + pirtobrutinib mrd-guided duration 15–36 cycles): pirtobrutinib daily from day 1 of cycle 1; venetoclax daily starting on day 1 of cycle 4 with weekly ramp-up from 20 mg to 400 mg over five weeks.-controlled, adaptive Phase III trial.

Randomised
Yes
Open Label
Yes
Comparator
Three-arm randomised comparison: Arm A (Venetoclax + Obinutuzumab fixed-duration over 12 cycles): obinutuzumab intravenous on days 1 (and 2), 8 and 15 of cycle 1, and day 1 of cycles 2-6; venetoclax continuous daily starting day 22 of cycle 1 with weekly dose ramp-up from 20 mg to 400 mg over five weeks. Arm B (Venetoclax + Pirtobrutinib fixed-duration over 15 cycles): pirtobrutinib started day 1 of cycle 1 and continued daily; venetoclax daily starting on day 1 of cycle 4 with weekly ramp-up from 20 mg to 400 mg over five weeks. Arm C (Venetoclax + Pirtobrutinib MRD-guided duration 15–36 cycles): pirtobrutinib daily from day 1 of cycle 1; venetoclax daily starting on day 1 of cycle 4 with weekly ramp-up from 20 mg to 400 mg over five weeks.
Adaptive
True, MRD-guided adaptive treatment duration in arm C: treatment duration individualized based on minimal residual disease assessments (arm C duration 15 up to 36 cycles depending on MRD results).
Biomarker Stratified
True, biomarkers: TP53 deletion and/or mutation (present vs absent); IGHV mutational status (unmutated vs mutated).
Target Sample Size
746
Trial Duration For Participant
1008

Stratification factors

  • TP53 deletion and/or mutation (present vs absent)
  • IGHV mutational status (unmutated vs mutated)
  • Type of lymphoma (CLL vs SLL)
  • Age (≤ 65 vs > 65 years)

Eligibility

Recruits 746 Vulnerable population not selected for inclusion (isVulnerablePopulationSelected: false). The protocol excludes legally incapacitated persons and prisoners/institutionalised subjects; all participants must be able and willing to provide written informed consent (no assent procedures described because minimum age is 18 years)..

Pregnancy Exclusion
Pregnant women and nursing mothers (a negative pregnancy test is required for all women of childbearing potential within 7 days before start of treatment)
Vulnerable Population
Vulnerable population not selected for inclusion (isVulnerablePopulationSelected: false). The protocol excludes legally incapacitated persons and prisoners/institutionalised subjects; all participants must be able and willing to provide written informed consent (no assent procedures described because minimum age is 18 years).

Inclusion criteria

  • {"criterion_text":"- Documented CLL/SLL requiring treatment according to iwCLL criteria with a CLL phenotype cell count >10-2 tracked by flow cytometry at screening."}
  • {"criterion_text":"- Adequate bone marrow function as indicated by: - an absolute neutrophil count ≥ 1 x 10⁹/l - a hemoglobin value ≥8.0 g/dL without transfusions during the last 7 days unless directly attributable to CLL/SLL (e.g. bone marrow infiltration) and - a platelet count ≥ 25 x 10⁹/l unless due to the CLL/SLL, in this case, platelet count should be ≥ 10.000/µl without transfusion during the last 7 days."}
  • {"criterion_text":"- Adequate renal function, as indicated by a creatinine clearance ≥30ml/min calculated according to the MDRD-formula or an equally accurate method (e.g. 24 hr. urine collection)"}
  • {"criterion_text":"- Adequate liver function as indicated by: - a total bilirubin≤ 2 x the institutional upper limit of normal (ULN) value, and -\tAST/ ALT ≤ 2.5 x the institutional ULN value, unless directly attributable to the patient’s CLL/SLL or to Gilbert’s Syndrome."}
  • {"criterion_text":"- Negative serological testing for hepatitis B (HBsAg negative and anti-HBc negative; patients positive for anti-HBc may be included if PCR for HBV DNA is negative and HBV-DNA PCR is performed every month until 12 months after last dosage of obinutuzumab), negative testing for hepatitis-C (HCV-RNA PCR) and negative HIV test within 6 weeks prior to registration"}
  • {"criterion_text":"- Age ≥ 18 years"}
  • {"criterion_text":"- Eastern Cooperative Oncology Group Performance Status (ECOG) performance status"}
  • {"criterion_text":"- Life expectancy ≥ 6 months"}
  • {"criterion_text":"- Ability and willingness to provide written informed consent and to adhere to the study visit schedule and other protocol requirements."}

Exclusion criteria

  • {"criterion_text":"- Any prior CLL- or SLL-specific therapies, except for corticosteroid treatment administered due to necessary immediate intervention (within the last 10 days before start of study treatment only dose equivalents up to 20 mg prednisolone per day are permitted)."}
  • {"criterion_text":"- Decompensated auto-immune cytopenia (defined as ongoing drop in hemoglobin (AIHA) or in platelets (ITP) in spite of prednisolone and/or intravenous immunoglobulins treatment)."}
  • {"criterion_text":"- (Suspicion of) transformation of CLL/SLL (i.e. Richter`s transformation) or central nervous system (CNS) involvement."}
  • {"criterion_text":"- (Suspicion of) progressive multifocal leukoencephalopathy (PML)."}
  • {"criterion_text":"- Malignant neoplasm other than CLL/SLL unless in remission and unlikely to adversely impact on patient´s life expectancy, defined as curatively treated non-melanoma skin cancer or other neoplasias treated curatively ≥1 year ago, without signs of progression and not currently requiring systemic therapies (with the exception of ongoing anti-hormonal therapy)."}
  • {"criterion_text":"- Active infection requiring systemic treatment, including HIV, HBV and HCV"}
  • {"criterion_text":"- Increased risk of bleeding, e.g. due to: - known bleeding disorder - anticoagulant therapy with phenprocoumon or other vitamin K antagonists (anticoagulation with a direct oral Xa or thrombin inhibitor (DOAC) or heparin) is permitted) - major surgery ≤4 weeks prior to randomization - stroke or intracranial hemorrhage ≤ 6 months of randomization"}
  • {"criterion_text":"- Any comorbidity or organ system impairment rated with a CIRS (cumulative illness rating scale) score of 4 or any other life-threatening illness, medical condition or organ system dysfunction that – in the investigator´s opinion - could compromise the patient`s safety or interfere with the absorption or metabolism of the study drugs (e.g, inability to swallow tab-lets or impaired resorption in the gastrointestinal tract)"}
  • {"criterion_text":"- Pregnant women and nursing mothers (a negative pregnancy test is required for all women of childbearing potential within 7 days before start of treatment)"}
  • {"criterion_text":"- Fertile men or women of childbearing potential unless: - surgically sterile or ≥ 2 years after the onset of menopause, or -\twilling to use two methods of reliable contraception including one highly effective (Pearl Index <1) and one additional effective (barrier) method during study treatment and for the required time period thereafter (at least one and up to 18 months after end of study treatment depending of study drug(s) used, see chapter 2.2.2.1 Known risks relevant with all study drugs)."}
  • {"criterion_text":"- Vaccination with a live vaccine ≤ 28 days prior to registration"}
  • {"criterion_text":"- Use of investigational agents which might interfere with the study drug within 28 days prior to registration"}
  • {"criterion_text":"- Legal incapacity"}
  • {"criterion_text":"- Prisoners or subjects who are institutionalized by regulatory or court order"}
  • {"criterion_text":"- Persons who are in dependence to the sponsor or an investigator"}

Endpoints

Primary endpoints

  • {"endpoint_text":"- Progression-free survival (PFS)","definition_or_measurement_approach":"Progression-free survival (PFS) measured as time to progression or death; primary objective: compare PFS between MRD-guided Venetoclax/Pirtobrutinib vs fixed-duration Venetoclax/Pirtobrutinib and MRD-guided Venetoclax/Pirtobrutinib vs fixed-duration Venetoclax/Obinutuzumab."}

Secondary endpoints

  • {"endpoint_text":"- Measurable residual disease (MRD) levels by different types of measurement from different materials at final restaging (performed 3 months after end of treatment in all patients - except for patients that show progression of CLL disease or Richter transformation before this point of time - which differs depending on the duration of treatment) and selected other time points during and after treatment","definition_or_measurement_approach":"MRD assessed by different measurement techniques from different sample types at final restaging (3 months after end of treatment) and at selected other time points during and after treatment."}
  • {"endpoint_text":"- Overall response rate (ORR) and complete response (CR) rate at the final restaging and selected other time points","definition_or_measurement_approach":"ORR and CR assessed according to iwCLL guidelines at final restaging (3 months after end of treatment) and selected other time points."}
  • {"endpoint_text":"- Duration of response (DOR)","definition_or_measurement_approach":"DOR assessed per iwCLL criteria."}
  • {"endpoint_text":"- Time to next treatment (TTNT)","definition_or_measurement_approach":"Time from randomisation or end of treatment to initiation of next anti-lymphoma therapy."}
  • {"endpoint_text":"- Treatment-free survival (TFS)","definition_or_measurement_approach":"Time patient remains alive and free from systemic anti-CLL therapy (definition per protocol)."}
  • {"endpoint_text":"- Overall survival (OS)","definition_or_measurement_approach":"Time from randomisation to death from any cause."}
  • {"endpoint_text":"- Safety parameters: Type, frequency and severity of - adverse events (AEs) -\tadverse events of particular interest (AEPI)","definition_or_measurement_approach":"Safety assessed by recording type, frequency and severity of AEs and AEPI (standard CTCAE grading expected per protocol)."}
  • {"endpoint_text":"- Best response assessed until 1 year after end of treatment","definition_or_measurement_approach":"Best response as per iwCLL guidelines up to 1 year after end of treatment."}

Recruitment

Registry Or Advocacy Recruitment
True, Cancer Trials Ireland
Planned Sample Size
746
Recruitment Window Months
72
Consent Approach
Written informed consent required from each participant ("Ability and willingness to provide written informed consent"). Minimum age 18 years so consent provided by participant; legal incapacity excluded. Pregnancy testing required for all women of childbearing potential within 7 days prior to treatment start. Informed consent / subject information documents available in multiple country/language-specific versions (documents present for IT/EN/FR/DE/NL/ES/PL/SE/NO/FI/CZ/DK and others per country Part II submissions).

Sponsor

Primary sponsor

Full Name
University Of Cologne
Organisation Type
Educational Institution
Country Of Registered Address
Germany

Contract research organisations

Name
Almac Clinical Services (Ireland) Limited
Responsibilities
duty codes [14] (as listed in sponsors.thirdParties)
Name
Almac Clinical Technologies LLC
Responsibilities
duty codes [3] (as listed in sponsors.thirdParties)
Name
Pharmaceutical Development And Services S.r.l.
Responsibilities
duty codes [1,12,2,5] (as listed in sponsors.thirdParties)

Third parties

  • {"country":"Sweden","full_name":"Uppsala University Hospital","duties_or_roles":"[1,12,2,5]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Denmark","full_name":"Aarhus Universitet","duties_or_roles":"[1]","organisation_type":"Educational Institution"}
  • {"country":"Denmark","full_name":"Rigshospitalet","duties_or_roles":"[12,2,5]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Germany","full_name":"University Hospital Cologne AöR","duties_or_roles":"[1]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Germany","full_name":"Universitaetsklinikum Schleswig-Holstein AöR","duties_or_roles":"[4]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Spain","full_name":"Red De Apoyo A La Investigacion Clinica En Hematologia Y Hemoterapia S.L.","duties_or_roles":"[1,12,2,5]","organisation_type":"Pharmaceutical company"}
  • {"country":"Denmark","full_name":"Odense University Hospital","duties_or_roles":"[1]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Ireland","full_name":"Almac Clinical Services (Ireland) Limited","duties_or_roles":"[14]","organisation_type":"Pharmaceutical company"}
  • {"country":"Italy","full_name":"Pharmaceutical Development And Services S.r.l.","duties_or_roles":"[1,12,2,5]","organisation_type":"Pharmaceutical company"}
  • {"country":"France","full_name":"LYSARC","duties_or_roles":"[1,12,2,5]","organisation_type":"Laboratory/Research/Testing facility"}
  • {"country":"Netherlands","full_name":"Hemato-Oncologie voor Volwassenen Nederland (Hovon) Stichting","duties_or_roles":"[1,12,2,5]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"United States","full_name":"Almac Clinical Technologies LLC","duties_or_roles":"[3]","organisation_type":"Pharmaceutical company"}
  • {"country":"Norway","full_name":"St. Olavs Hospital HF","duties_or_roles":"[1,12,2,5]","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Poland","full_name":"Kapadi Sp. z o.o.","duties_or_roles":"[1,12,2,5]","organisation_type":"Pharmaceutical company"}
  • {"country":"Czechia","full_name":"Masarykova Univerzita","duties_or_roles":"[1]","organisation_type":"Educational Institution"}
  • {"country":"Czechia","full_name":"University Hospital Olomouc","duties_or_roles":"","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"Ireland","full_name":"Cancer Trials Ireland","duties_or_roles":"[1,12,2,5]","organisation_type":"Patient organisation/association"}

Investigational products

Investigational Product Name
Venetoclax
Active Substance
Venetoclax
Modality
Small molecule
Routes Of Administration
Oral
Route
Oral
Authorisation Status
prodAuthStatus: 1
Starting Dose
Starting ramp-up from 20 mg weekly increasing to 400 mg (weekly dose escalation over five weeks) then continuous daily dosing
Dose Levels
20 mg -> 400 mg (weekly ramp-up over five weeks)
Frequency
Daily (continuous after ramp-up)
Maximum Dose
400 mg daily
Dose Escalation Increase
20 mg initial -> escalated weekly to 400 mg over five weeks
Investigational Product Name
Pirtobrutinib (PIRTOBRUTINIB)
Active Substance
Pirtobrutinib
Modality
Small molecule
Routes Of Administration
Oral
Route
Oral
Authorisation Status
prodAuthStatus: 2
Starting Dose
Pirtobrutinib started on day 1 of cycle 1 and continued daily (per protocol); product record max daily dose 200 mg
Dose Levels
Up to 200 mg daily (product maxDailyDoseAmount: 200 mg)
Frequency
Daily
Maximum Dose
200 mg daily
Investigational Product Name
Obinutuzumab (Gazyvaro 1,000 mg concentrate for solution for infusion.)
Active Substance
Obinutuzumab
Modality
Monoclonal antibody
Routes Of Administration
Intravenous infusion
Route
Intravenous
Authorisation Status
prodAuthStatus: 2; EU/1/14/937/001
Starting Dose
Obinutuzumab 1,000 mg IV administered per schedule (days 1 and 2, 8 and 15 of cycle 1; day 1 of cycles 2–6 as per Ven-Obi schema)
Dose Levels
1,000 mg per infusion (per SmPC used in trial)
Frequency
Per infusion schedule in cycle 1 and cycles 2–6
Maximum Dose
1000 mg per dose (per product record)
Combination Treatment
Yes

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