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A Phase 1 Study Evaluating Safety, Pharmacokinetics, and Efficacy of ABBV-453 in Adult Subjects With Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL)


Description

Chronic lymphocytic leukemia (CLL) is the most common leukemia in Western countries. The purpose of this study is to assess how well ABBV-453 works adult participants with relapsed/refractory (R/R) untreated CLL/small lymphocytic lymphoma (SLL). Adverse events, pharmacokinetics, and change in disease activity will be assessed. ABBV-453 is an investigational drug for the treatment of CLL and SLL. There are 2 parts to this study. In part A participants will be placed 1 of 5 cohorts with a specific target dose for each cohort and receive obinutuzumab during the debulking period followed escalating doses of ABBV-453, until the appropriate target dose is achieved. In part B participants will be placed in 2 cohorts and receive up to the maximum dose in part A, with cohort 2.1 including a debulking period (obinutuzumab) as in part A. Approximately 80 adult participants with previously R/R CLL/SLL will be enrolled in the study in approximately 28 sites across the world. Participants in part

Trial Eligibility

Inclusion Criteria: * Relapsed/refractory (R/R) chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL) that has received at least 2 prior anti-cancer systemic therapies and does not have another therapy that is more appropriate at the judgement of the Investigator. * Laboratory values meeting those listed in the protocol. Exclusion Criteria: * QT interval corrected for heart rate (QTc) using Fridericia's correction of \> 470 msec (females) or \> 450 msec (males), Grade 3 arrythmia, and/or other clinically significant cardiac abnormalities. * Known to be B-cell leukemia/lymphoma 2 inhibitor (BCL-2i) refractory or has received a BCL-2i-containing regimen within (6 months) of starting study drug (e.g., venetoclax, lisaftoclax, BGV-11417). * Has active human immunodeficiency virus (HIV) infection. HIV testing is not required unless required locally. * Recent history (within 6 months) of: * Congestive heart failure (defined as New York Heart Association, Class 2 or higher). * Ischemic cardiovascular event. * Cardiac arrhythmia requiring pharmacological or surgical intervention. * Pericardial effusion. * Pericarditis. * Consumes known moderate or strong inhibitors of cytochrome P450 3A isoform subfamily (CYP3A) within 14 day or 5 half-lives of the drug (whichever is shorter) before the first dose of ABBV-453.

Study Info

Organization

AbbVie


Primary Outcome

Part A and B: Percentage of Participants With Adverse Events (AEs)


Outcome Timeframe Up to 5 Years

NCTID NCT06291220

Phases PHASE1

Primary Purpose TREATMENT

Start Date 2024-08-09

Completion Date 2029-07-21

Enrollment Target 80

Interventions

DRUG Obinutuzumab

DRUG ABBV-453

Locations Recruiting

City of Hope /ID# 253904

United States, California, Duarte


City of Hope Orange County Lennar Foundation Cancer Center /ID# 267158

United States, California, Irvine


Intermountain Health St. Vincent Regional Hospital - Cancer Centers of Montana /ID# 264622

United States, Montana, Billings


Royal Prince Alfred Hospital /ID# 263129

Australia, New South Wales, Sydney


Gold coast University Hospital /ID# 255785

Australia, Queensland, SouthPort


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