Clinical trial
A Phase 3 Open-Label, Randomized Study of Fixed Duration Pirtobrutinib (LOXO-305) Plus Venetoclax and Rituximab Versus Venetoclax and Rituximab in Previously Treated Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (BRUIN CLL-322)
Name
LOXO-BTK-20022
Description
The purpose of this study is to compare the efficacy and safety of fixed duration pirtobruitinib (LOXO-305) with VR (Arm A) compared to VR alone (Arm B) in patients with CLL/SLL who have been previously treated with at least one prior line of therapy. Participation could last up to five years.
Trial arms
Trial start
2021-09-20
Estimated PCD
2025-10-01
Trial end
2027-01-01
Status
Recruiting
Phase
Early phase I
Treatment
Pirtobrutinib
Oral
Arms:
Arm A (PVR)
Other names:
LOXO-305, LY3527727
Venetoclax
Oral
Arms:
Arm A (PVR), Arm B (VR)
Other names:
Venclexta, Venclyxto
Rituximab
Intravenous (IV)
Arms:
Arm A (PVR), Arm B (VR)
Other names:
Rituxan, MabThera, Truxima, Riabni, Ruxience
Size
600
Primary endpoint
To evaluate progression-free survival (PFS) of pirtobrutinib plus venetoclax and rituximab (Arm A) compared to venetoclax and rituximab (Arm B)
Up to approximately 5 years
Eligibility criteria
Inclusion Criteria:
* Confirmed diagnosis of CLL/SLL requiring therapy per iwCLL 2018 criteria
* Previous treatment with at least one line of therapy that may include a covalent Bruton's tyrosine kinase (BTK) inhibitor
* Platelets greater than or equal to (≥)50 x 10⁹/liter (L), hemoglobin ≥8 grams/deciliter (g/dL) and absolute neutrophil count ≥1.0 x 10⁹/L
* Adequate organ function
* Eastern Cooperative Oncology Group (ECOG) Performance Status 0-2
* Estimated creatinine clearance ≥30 milliliters per minute (mL/min)
Exclusion Criteria:
* Known or suspected Richter's transformation at any time preceding enrollment
* Prior therapy with a non-covalent (reversible) BTK inhibitor
* Patients requiring therapeutic anticoagulation with warfarin or another Vitamin K antagonist
* Current treatment with strong cytochrome P450 (CYP) 3A4 (CYP3A4) inhibitors or inducers
* Prior therapy with venetoclax
* Central nervous system (CNS) involvement
* Active uncontrolled systemic bacterial, viral, fungal, or parasitic infection
* Known human immunodeficiency virus (HIV) infection, regardless of cluster of differentiation 4 (CD4) count
* Allogeneic stem cell transplantation (SCT) or chimeric antigen receptor (CAR)-T within 60 days
* Active hepatitis B or hepatitis C
* Known active cytomegalovirus (CMV) infection
* Uncontrolled immune thrombocytopenic purpura (ITP) or autoimmune hemolytic anemia (AIHA)
* Significant cardiovascular disease
* Vaccination with a live vaccine within 28 days prior to randomization
* Patients with the following hypersensitivity:
* Known hypersensitivity to any component or excipient of pirtobrutinib and venetoclax
* Prior significant hypersensitivity to rituximab
* Known allergy to allopurinol and inability to take uric acid lowering agent
Protocol
{'studyType': 'INTERVENTIONAL', 'phases': ['PHASE3'], 'designInfo': {'allocation': 'RANDOMIZED', 'interventionModel': 'PARALLEL', 'interventionModelDescription': 'Eligible patients will be randomized 1:1 into Arm A and Arm B.', 'primaryPurpose': 'TREATMENT', 'maskingInfo': {'masking': 'NONE'}}, 'enrollmentInfo': {'count': 600, 'type': 'ESTIMATED'}}
Updated at
2024-01-26
1 organization
3 products
1 abstract
2 indications
Product
PirtobrutinibIndication
Chronic Lymphocytic LeukemiaIndication
Small Lymphocytic LymphomaProduct
VenetoclaxProduct
RituximabOrganization
Loxo OncologyAbstract
BRUIN CLL-322: A phase 3 open-label, randomized study of fixed duration pirtobrutinib plus venetoclax and rituximab versus venetoclax and rituximab in previously treated chronic lymphocytic leukemia/small lymphocytic lymphoma.Org: Oxford University Hospitals NHS Foundation Trust, Churchill Cancer Center, University of Texas MD Anderson Cancer Center, MD Anderson Cancer Center, Faculty Hospital Hradec Kralove,