Clinical trial Recruiting at 75 sites Phase2; Phase3 Interventional Ages 18 to 90

Optimizing treatment for hairy cell leukemia with cladribine injections

Official title: Therapy Optimisation for the Treatment of Hairy Cell Leukemia

Run by University of Giessen · NCT02131753 · Data updated 2026-11-12

This study is testing if a single round of cladribine injections can help people with untreated hairy cell leukemia go into remission.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years to 90 Years
SexAll
Enrollment210 (estimated)
SponsorUniversity of Giessen
Academic / other
Locations76 sites (Ansbach and 75 other locations)
StatusRecruiting
StartedMay 2004
Main results expectedDecember 2025
Study endsDecember 2027
Registry record updatedAugust 22, 2024
Trial IDNCT02131753 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with histologically verified hairy cell leukemia who have not received prior cytostatic treatment.

Probably not a fit

Patients with hairy cell leukemia variants or those who have been pretreated with purine analogues or other chemotherapeutics may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial evaluates the effectiveness and safety of a single cycle of subcutaneous cladribine in patients with untreated hairy cell leukemia. Participants will be assessed for remission status four months post-treatment, and those with non-optimal responses may receive a second cycle of cladribine. The study aims to determine the best treatment approach for patients requiring intervention for this rare blood cancer.

Why it matters

Potential benefit: If successful, this treatment could provide a more effective and less toxic option for patients with hairy cell leukemia.

How similar studies have gone: Previous studies have shown promise with cladribine in treating hairy cell leukemia, indicating a potential for success in this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with histologically verified hairy cell leukemia
* Presence of hairy cells in the bone marrow and peripheral blood detected by positive TRAP staining and / or co expression if cell surface antigens cluster of differentiation (CD) 19/CD25 or CD19/CD103 (b-ly7)
* No previous cytostatic treatment (splenectomy or interferon treatment are allowed)
* Need for treatment
* Age at least 18 years old
* General state of health according to WHO 0-2
* Current histology, not older than 6 months
* Written consent by patient

Exclusion Criteria:

* Patients not fulfilling inclusion criteria above
* Hairy cell leukemia variants (HCL-V): presence of lymphoid cells in bone marrow and / or peripheral blood, which have an intermediate morphology between hairy cells and prolymphocytes (negative TRAP staining and co- expression of CD19/CD103 without CD25
* Pretreatment with purine analogues or other chemotherapeutics
* Concomitant corticosteroid therapy
* Severe dysfunction of the heart (NYHA III or IV), the lung (WHO-Grade III or IV), the liver, except due to lymphoma (bilirubin \> 2 mg/dl, alkaline phosphatase, glutamate-oxalacetate transaminase and glutamate-pyruvate transaminase \> 2 x upper limit of normal), the kidneys (creatinin \> 2 mg/dl or creatinine clearance \< 50 ml/min), central nervous system diseases including psychoses.
* Proven HIV infection
* Active Hepatitis
* Other florid infections
* Anamnesis / diagnosis of other malignant disease (other than non-melanoma associated skin tumours or stage 0 in situ carcinoma of the cervix)
* Pregnant or lactating women

Where it's running

  • Community based hemato-oncology medical office
    Ansbach, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Aschaffenburg, Germany
    Recruiting
  • Rhön-Saale-Klinik gGmbH
    Bad Neustadt an der Saale, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Berlin, Germany
    Recruiting
  • Charité - Universitätsmedizin Berlin
    Berlin, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Bremen, Germany
    Recruiting
Show 44 more locations
  • Community based hemato-oncology medical office
    Celle, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Cottbus, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Darmstadt, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Dresden, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Duisburg, Germany
    Recruiting
  • Klinik Duisburg-West
    Duisburg, Germany
    Recruiting
  • Universitätsklinik Düsseldorf
    Düsseldorf, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Ehingen, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Erlangen, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Frankfurt, Germany
    Recruiting
  • Krankenhaus Nordwest
    Frankfurt, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Freiburg im Breisgau, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Friedrichshafen, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Fürth, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Germering, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Giessen, Germany
    Recruiting
  • University Clinic | Medicinal Clinic IV
    Giessen, Germany
    Recruiting
  • St.-Marien-Hospital
    Hagen, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Halle, Germany
    Recruiting
  • Evangelisches Krankenhaus
    Hamm, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Hanau, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Heidelberg, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Herne, Germany
    Recruiting
  • Marienkrankenhaus
    Herne, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Homberg (Ohm), Germany
    Recruiting
  • Community based hemato-oncology medical office
    Kaiserslautern, Germany
    Recruiting
  • Städtisches Klinikum
    Karlsruhe, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Kassel, Germany
    Recruiting
  • Klinikum Kempten-Oberallgäu
    Kempten, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Krefeld, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Kronach, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Landau, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Landshut, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Landshut, Germany
    Recruiting
  • Klinikum Leverkusen GmbH
    Leverkusen, Germany
    Recruiting
  • St. Marienkrankenhaus
    Ludwigshafen, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Lüdenscheid, Germany
    Recruiting
  • Universitätsklinik Mainz
    Mainz, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Marburg, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Mönchengladbach, Germany
    Recruiting
  • Community based hemato-oncology medical office
    München, Germany
    Recruiting
  • University Clinic Großhadern
    München, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Neumarkt, Germany
    Recruiting
  • Community based hemato-oncology medical office
    Nuremberg, Germany
    Recruiting

+26 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Tovorafenib plus rituximab for classical hairy cell leukemia

    This trial tests whether combining tovorafenib and rituximab is safe and effective for adults with relapsed or refractory classical hairy cell leukemia and compares that combination to cladribine plus rituximab in newly diagnosed patients.

    Recruiting at 4 sites Phase 1/2 National Cancer Institute (NCI) · Bethesda, Maryland and 3 other locations · NCT06965114

  • Comparing two treatment combinations for Hairy Cell Leukemia

    This study is testing whether a new combination of drugs can work better and cause fewer side effects than the standard treatment for patients with Hairy Cell Leukemia who have a specific genetic mutation.

    Recruiting at 8 sites Phase 2 Memorial Sloan Kettering Cancer Center · Boston, Massachusetts and 9 other locations · NCT06561360

  • Using CAR T cells to treat certain types of B cell lymphomas

    This study is testing a new CAR T cell therapy to see if it can help adults with certain types of B cell lymphomas that haven't improved with other treatments.

    Recruiting Phase 1 Stanford University · Palo Alto, California · NCT06340737

  • Using modified T cells to treat relapsed hairy cell leukemia

    This study is testing a new treatment using modified T cells to see if it can help adults with relapsed hairy cell leukemia who haven't responded to other therapies.

    Recruiting Phase 1 National Institutes of Health Clinical Center (CC) · Bethesda, Maryland · NCT04815356

  • Oral treatment with LP-168 for patients with certain blood cancers

    This study is testing an oral treatment called LP-168 to see if it can help adults with certain types of blood cancers that have come back or didn't respond to other treatments.

    Recruiting at 4 sites Phase 1 Newave Pharmaceutical Inc · Durham, North Carolina and 3 other locations · NCT04775745

  • Treatment for Hairy Cell Leukemia Without BRAF Mutation

    This study is testing if a new drug called binimetinib can help people with hairy cell leukemia who don't have a BRAF mutation and haven't responded to other treatments.

    Recruiting Phase 2 National Institutes of Health Clinical Center (CC) · Bethesda, Maryland · NCT04322383

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.