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Early Clonal Dynamics During Venetoclax Treatment for Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL)

NCT03986034 · Status: RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 75

Last updated 2026-02-24

No results posted yet for this study

Summary

Background:

The drug venetoclax treats chronic lymphocytic leukemia (CLL). Researchers want to find better treatments for CLL. To do that, they need to learn how the drug affects CLL cancer cells and the immune system.

Objective:

To learn about genetic changes that happen during treatment of CLL with venetoclax.

Eligibility:

Adults ages 18 and older with relapsed or refractory CLL after at least 1 prior therapy

Design:

Participants will be screened under a separate protocol.

In Phase 1, participants will get venetoclax free of charge through the NIH. Venetoclax is started at a low dose. The dose will be increased every week until participants reach their maximum tolerable dose. This usually take about 5 weeks. Participants will visit the NIH at least once per week. Visits will be about 4 hours. They may have to stay in the hospital to be observed.

In Phase 2, participants will continue to get the drug through their local cancer doctor and their health insurance. Patients will also visit the NIH every 6 months, or if their disease progresses.

At the NIH participants will have regular health assessments. These will include physical exams and a review of the medicines they are taking. They will talk about how they are feeling.

The study included the following tests:

Blood draws

CT scans: Participants will lie in a machine that takes pictures of the body (maximum 3 per year)

Bone marrow biopsies: A small amount of marrow will be taken out of the participant s hip bone with a needle.

Optional lymph node biopsies: A small piece of the participant s tissue will be taken out with a needle.

The study will last at least 2 years.

Conditions

Interventions

DRUG

During Venetoclax

Patients with CLL/SLL will enroll on the study. Subjects will be treated at the NIH Clinical Center for the duration of the ramp-up phase of venetoclax. After the ramp-up phase is complete, subjects will be transitioned to the care of their local hematologist/oncologist and receive venetoclax monotherapy or in combination with other agent(s) at the discretion of the treating oncologist. Subjects will have the option to follow-up at the NIH every 6 months (from initiation of venetoclax) and at (suspected) progression.

Sponsors & Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)

    lead NIH

Principal Investigators

  • Christine E Gruessner, M.D. · National Heart, Lung, and Blood Institute (NHLBI)

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-06-26
Primary Completion
2026-07-03
Completion
2026-07-03

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03986034 on ClinicalTrials.gov