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A Study of Pirtobrutinib (LOXO-305) Versus Ibrutinib in Participants With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL) (BRUIN-CLL-314)

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Loxo Oncology

Status and phase

Active, not recruiting
Phase 3

Conditions

Leukemia, B-cell
Small Lymphocytic Lymphoma
Leukemia, Lymphocytic
Chronic Lymphocytic Leukemia

Treatments

Drug: Pirtobrutinib
Drug: Ibrutinib

Study type

Interventional

Funder types

Industry

Identifiers

NCT05254743
J2N-OX-JZNU (Other Identifier)
2021-003206-41 (EudraCT Number)
18281
LOXO-BTK-20030 (Other Identifier)

Details and patient eligibility

About

The purpose of this study is to compare the efficacy and safety of pirtobruitinib (LOXO-305) to ibrutinib in participants with CLL/SLL. Participants may or may not have already had treatment for their cancer. Participation could last up to six years.

Enrollment

650 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Confirmed diagnosis of CLL/SLL requiring therapy per iwCLL 2018 criteria

  • Eastern Cooperative Oncology Group (ECOG) Performance Status 0-2

  • Adequate organ function

    • Platelets greater than or equal to ≥ 50 x 10⁹/liter (L) or ≥30 x 10⁹/L in participants with documented bone marrow involvement considered to impair hematopoiesis,
    • Hemoglobin ≥8 grams/deciliter (g/dL) or ≥6 g/dL in participants with documented bone marrow involvement considered to impair hematopoiesis
    • Absolute neutrophil count ≥0.75 x 10⁹/L or ≥0.50 × 10⁹/L in participants with documented bone marrow involvement considered to impair hematopoiesis
    • Kidney function: Estimated creatinine clearance ≥30 milliliters per minute (mL/min)

Exclusion criteria

  • Known or suspected Richter's transformation to diffuse large B-cell lymphoma (DLBCL), prolymphocytic leukemia, or Hodgkin's lymphoma at any time preceding enrollment
  • Known or suspected central nervous system (CNS) involvement
  • A significant history of renal, neurologic, psychiatric, endocrine, metabolic or immunologic disease
  • Active uncontrolled auto-immune cytopenia (e.g., autoimmune hemolytic anemia [AIHA], idiopathic thrombocytopenic purpura [ITP])
  • Significant cardiovascular disease including ejection fraction < 40% and any grade ongoing atrial fibrillation or atrial flutter
  • Hepatitis B or hepatitis C testing indicating active/ongoing infection, based on Screening laboratory tests
  • Active cytomegalovirus (CMV) infection
  • Active uncontrolled systemic bacterial, viral, or fungal infection
  • Known human immunodeficiency virus (HIV) infection, regardless of cluster of differentiation 4 (CD4) count
  • Clinically significant active malabsorption syndrome or other condition likely to affect GI absorption of the oral-administered study treatments
  • Ongoing inflammatory bowel disease
  • Prior exposure to BTK inhibitor (covalent or noncovalent)
  • Concurrent use of investigational agent or anticancer therapy except hormonal therapy
  • Participants requiring therapeutic anticoagulation with warfarin or another Vitamin K antagonist
  • Use of > 20 mg prednisone daily or equivalent dose of steroid at the time of first dose of study drug
  • Vaccination with a live vaccine within 28 days prior to randomization
  • Participants receiving chronic therapy with a strong cytochrome P450 (CYP)3A inhibitor (except posaconazole and voriconazole) which cannot be stopped within 3-5 half lives of the CYP3A inhibitor therapy prior to start of study drug treatment
  • Participants with known hypersensitivity, including anaphylaxis, to any component or excipient of pirtobrutinib or ibrutinib

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

650 participants in 2 patient groups

Pirtobrutinib
Experimental group
Description:
Administered orally.
Treatment:
Drug: Pirtobrutinib
Ibrutinib
Active Comparator group
Description:
Administered orally.
Treatment:
Drug: Ibrutinib

Trial contacts and locations

180

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Central trial contact

There may be multiple sites in this clinical trial. 1-877-CTLILLY (1-877-285-4559) or

Data sourced from clinicaltrials.gov

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