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Clinical Trial ● Currently Recruiting Phase III NCT05254743

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

A Study of Pirtobrutinib (LOXO-305) Versus Ibrutinib in Participants With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL) — Recruiting • Phase III • Oncology • NCT05254743.

📅 09 Jun 2026 ⏱ 2 min read
Currently Recruiting
This trial is actively seeking participants in the UK. Discuss eligibility with your patient before referring.
Status
Currently Recruiting
Phase
Phase III
NCT ID
NCT05254743
Sponsor
Loxo Oncology, Inc.
Start
2022-07-22
ClinicaliQ Trial Snapshot
  • A Study of Pirtobrutinib (LOXO-305) Versus Ibrutinib in Participants With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL) — Recruiting • Phase III • Oncology • NCT05254743.
  • Treatment being tested: Pirtobrutinib (LOXO-305), a novel BTK inhibitor, is being compared against ibrutinib (standard BTK inhibitor) in patients with chronic lymphocytic leukaemia/small lymphocytic lymphoma, evaluating both efficacy and safety profiles.
  • Patient eligibility: The trial includes both treatment-Phase IIIïve and previously-treated patients with CLL/SLL, allowing evaluation across the disease spectrum from initial diagnosis through relapsed/refractory disease.
Use This Page For
  • Quick orientation before opening the registry record.
  • Checking recruitment status, phase and sponsor at a glance.
  • Connecting this trial to nearby guidelines, Drug Science and education.
What This Trial Is Studying

The purpose of Part 1 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. The purpose of Part 2 of this study evaluates pirtobrutinib monotherapy in treatment-naïve participants with CLL/SLL with 17p deletions. Participation could last up to six years for Part 1. Participation could last up to 2 years for Part 2.

Eligibility Snapshot
  • : * Confirmed diagnosis of CLL/SLL requiring therapy per iwCLL 2018 criteria * Part 1 - Known 17p deletion status (wildtype or deleted). Part 2 - Must have deletion of 17p as determined by FISH testing * 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)

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.

Full Trial Details
View this trial on the source registry
Eligibility criteria, protocol, and results when available
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