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BTK Inhibitor

LOXO-305 for Chronic Lymphocytic Leukemia (BRUIN CLL-321 Trial)

Phase 3
Waitlist Available
Research Sponsored by Loxo Oncology, Inc.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Confirmed diagnosis of CLL/SLL requiring therapy as defined by iwCLL 2018 criteria
Previously treated with a covalent BTK inhibitor
Must not have
Known or suspected Richter's transformation at any time preceding enrollment
Known or suspected history of central nervous system (CNS) involvement by CLL/SLL
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to approximately 36 months
Awards & highlights
No Placebo-Only Group
Pivotal Trial

Summary

This trial is for people with CLL or SLL who have had treatment with a BTK inhibitor. They will compare LOXO-305 to idelalisib plus rituximab or bendamustine plus rituximab.

Who is the study for?
This trial is for patients with chronic lymphocytic leukemia (CLL) or small lymphocytic leukemia (SLL) who have had previous treatment including a BTK inhibitor. They should be in fairly good health, with specific blood counts and organ function levels meeting the study's criteria. People with certain heart diseases, active infections like hepatitis or HIV, recent live vaccinations, or known allergies to the drugs being tested cannot join.
What is being tested?
The study compares LOXO-305 against two other treatments: Idelalisib plus Rituximab or Bendamustine plus Rituximab. Patients will receive one of these treatments based on random assignment and could participate for up to four years if their disease doesn't worsen.
What are the potential side effects?
Possible side effects include allergic reactions to medication components, liver issues from drug interactions, and complications related to low blood cell counts such as increased infection risk. Each treatment has its own profile of potential side effects that participants will be monitored for.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I have been diagnosed with CLL/SLL and need treatment.
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I have been treated with a BTK inhibitor before.
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I can perform daily activities with little to no assistance.
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My kidneys are functioning well enough to clear waste.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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My condition has transformed into a more aggressive form of cancer.
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My CLL/SLL cancer may have spread to my brain or spinal cord.
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I am currently experiencing liver problems due to medication.
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I have an active, uncontrolled immune system disorder affecting my blood cells.
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I have a serious heart condition.
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I have active hepatitis B or C.
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I do not have any ongoing serious infections.
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I am HIV positive.
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I have a severe digestive condition affecting nutrient absorption.
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I have been treated with a reversible BTK inhibitor before.
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I need blood thinners like warfarin for my condition.
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I am currently taking medication that strongly affects liver enzymes.
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I have not received a live vaccine in the last 28 days.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to approximately 36 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to approximately 36 months for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
To evaluate progression-free survival (PFS) of LOXO-305 monotherapy (Arm A) compared to investigator's choice of idelalisib plus rituximab (IdelaR) or bendamustine plus rituximab (BR) (Arm B)
Secondary study objectives
Time to worsening (TTW) of CLL/SLL related symptoms
Time to worsening (TTW) of physical function
To evaluate the effectiveness of Arm A compared to Arm B based on Overall Response Rate (ORR)
+2 more

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.
Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: Arm A (LOXO-305)Experimental Treatment1 Intervention
Orally
Group II: Arm B (Idelalisib plus rituximab [IdelaR] or bendamustine plus rituximab [BR])Active Control3 Interventions
Investigator's choice of idelalisib plus rituximab (IdelaR) or bendamustine plus rituximab (BR).
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
LOXO-305
2021
Completed Phase 1
~60

Find a Location

Who is running the clinical trial?

Loxo Oncology, Inc.Lead Sponsor
71 Previous Clinical Trials
10,810 Total Patients Enrolled
Eli Lilly and CompanyIndustry Sponsor
2,672 Previous Clinical Trials
3,463,543 Total Patients Enrolled
Safi Shahda, MDStudy DirectorLoxo Oncology
1 Previous Clinical Trials
8 Total Patients Enrolled

Media Library

LOXO-305 (BTK Inhibitor) Clinical Trial Eligibility Overview. Trial Name: NCT04666038 — Phase 3
Chronic Lymphocytic Leukemia Research Study Groups: Arm A (LOXO-305), Arm B (Idelalisib plus rituximab [IdelaR] or bendamustine plus rituximab [BR])
Chronic Lymphocytic Leukemia Clinical Trial 2023: LOXO-305 Highlights & Side Effects. Trial Name: NCT04666038 — Phase 3
LOXO-305 (BTK Inhibitor) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04666038 — Phase 3
~54 spots leftby Nov 2025