Find a Clinical Trial in Hairy Cell Leukemia (HCL) or HCLv

This page brings together studies for people with hairy cell leukemia (HCL) and HCL variant (HCLv). You will find clinical trials that are actively recruiting patients, organized by treatment type, treatment history, and HCL subtype to help you identify options that may be relevant to your situation. You will also find research participation opportunities and resources to help you discuss options with your healthcare team.

Clinical Trials Actively Recruiting Patients

Tips for using this page:

- Click the + symbol to expand and view trials by category.

- For smoother navigation, close each category before opening a new one.

Following these steps will help you easily explore all available trials.

Clinical Trials by Treatment Type

Clinical Trials by Treatment History

 

Clinical Trials by Type of HCL

Studies that Do Not Include Treatment

 

View our HCL Clinical Trials Series Webinars

Below are webinars hosted by the Hairy Cell Leukemia Foundation. Researchers in charge of important clinical trials in HCL participated as speakers.

Comparing Vemurafenib+Obinutuzumab versus Cladribine+Rituximab

Dr. Jae Park, Memorial Sloan Kettering

In this webinar, Dr. Park discusses new chemotherapy-free treatment approaches for Hairy Cell Leukemia. He explains how targeted therapies focused on the BRAF mutation are showing promising results, including deep remissions, fewer infections, and faster recovery compared to traditional chemotherapy. The webinar also highlights an ongoing clinical trial comparing these newer treatments with standard therapy for newly diagnosed patients.                                                                                            

This trial is featured above under randomized (Chemo - Non-chemo)


HCL Clinical Trials at the National Cancer Institute (NCI)-NIH

Dr. Robert Kreitman, NCI-NIH

In this webinar, Dr. Kreitman discusses the latest clinical trials and treatment advances for Hairy Cell Leukemia and HCL variant at the National Cancer Institute. The seminar highlights targeted therapies, BRAF and MEK inhibitors, CAR-T therapy, and emerging treatments designed to improve outcomes for patients with relapsed or difficult-to-treat disease. Dr. Kreitman also explains the importance of molecular testing, minimal residual disease (MRD), and participation in clinical trials to help advance future HCL treatments.

 

Clinical Trials No Longer Recruiting Patients

These studies are no longer enrolling new participants but may provide valuable information about past and ongoing research.

 

What is a clinical trial?

Clinical trials are carefully controlled research studies that are necessary to develop and evaluate ways to improve treatment and quality of life for patients with hairy cell leukemia. Clinical trials may be available for patients at any stage of HCL and HCLv.

Can I join a clinical trial?

Your eligibility for a clinical trial depends on a variety of factors, such as whether you have HCL or an HCL variant, your stage of disease, your age and gender, and the type of treatment, if any, that you’ve already received.

We encourage you to discuss clinical trials with your doctor and healthcare team to consider the availability of a trial for your unique diagnosis, treatment history, and needs. 

Before joining a trial, consider asking:

As you review your options with your doctor, you will want to understand the purpose and length of a given clinical study; potential benefits and risks; costs of the study, including any charges you will be responsible for; your responsibilities and limitations during the trial, including travel requirements; and whether you will continue to see your own doctor during the trial.


ClinicalTrials.gov : Explore more Clinical Trials

You may want to explore www.ClinicalTrials.gov, a registry of federally and privately supported clinical trials in the United States and around the world. This website is a service of the U.S. National Institutes of Health (NIH). Once on the www.ClinicalTrials.gov website, you can enter “hairy cell leukemia” in the “Condition or Disease” box and click “Search” for a list of relevant trials. You can also specify a “Country” to narrow your search.