Clinical trial Recruiting at 30 sites Phase 3 Interventional Ages 18 to 120

Combination treatment for high-risk chronic lymphocytic leukemia

Official title: A Prospective, Open-label, Multicentre, Randomized, Phase-3-trial of Acalabrutinib, Obinutuzumab and Venetoclax (GAVE) Compared to Obinutuzumab and Venetoclax (GVE) in Previously Untreated Patients With High Risk Chronic Lymphocytic Leukemia (CLL)

Run by German CLL Study Group · NCT05197192 · Data updated 2026-11-12

This study is testing if a new combination of three drugs can help people with high-risk chronic lymphocytic leukemia live longer without their cancer getting worse compared to a combination of two drugs.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 120 Years
SexAll
Enrollment202 (estimated)
SponsorGerman CLL Study Group
Academic / other
Drugs / interventionsobinutuzumab, acalabrutinib, rituximab, ibrutinib, chemotherapy, cyclophosphamide, fludarabine
Locations30 sites (Bad Saarow and 29 other locations)
StatusRecruiting
StartedApril 19, 2022
Main results expectedMay 2028
Study endsMay 2028
Registry record updatedAugust 20, 2026
Trial IDNCT05197192 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with documented high-risk CLL requiring treatment.

Probably not a fit

Patients without the specified genetic risk factors for high-risk CLL 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 multicenter, open-label, randomized phase 3 trial aims to compare the effectiveness of a triple combination therapy using acalabrutinib, obinutuzumab, and venetoclax against a dual therapy of obinutuzumab and venetoclax in patients with high-risk chronic lymphocytic leukemia (CLL). The study focuses on patients with specific genetic markers indicating high risk, such as 17p-deletion, TP53-mutation, or complex karyotype. By evaluating progression-free survival, the trial seeks to address a significant medical need for more effective treatment options in this aggressive form of leukemia.

Why it matters

Potential benefit: If successful, this treatment could significantly improve progression-free survival for patients with high-risk CLL.

How similar studies have gone: Other studies have shown promising results with similar combination therapies in treating high-risk CLL, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Documented CLL/SLL requiring treatment according to iwCLL criteria
* Age at least 18 years
* At least one of the following risk factors: 17p-deletion, TP53-mutation, complex karyotype (defined as defined as the presence of 3 or more chromosomal aberrations in 2 or more metaphases) or an unmutated IGHV gene status.
* Life expectancy ≥ six months
* Adequate bone marrow function indicated by a platelet count \>30 x10\^9/l
* Creatinine clearance ≥ 30ml/min
* Adequate liver function as indicated by a total bilirubin ≤ 2 x, AST/ ALT ≤ 2.5 x the institutional ULN value, unless directly attributable to the patient's CLL or to Gilbert's Syndrome
* Negative testing for hepatitis B (HbsAg negative and anti-HBc negative; patients positive for anti-HBc may be included if PCR for HBV DNA is negative and HBV-DNA PCR is performed every month until 12 months after last treatment cycle),or hepatitis C (negative testing for hepatitis C RNA within 6 wee
* ks prior to registration for study screening (i.e. PCR only required when serology was positive))
* ECOG (Eastern Cooperative Oncology Group Performance Status) status 0-2

Exclusion Criteria:

* Any prior CLL-specific therapies (except corticosteroid treatment administered due to necessary immediate intervention; within the last 10 days before start of study treatment, only dose equivalents up to 20 mg prednisolone are permitted)
* Absence of high risk disease (17p-deletion, TP53-mutation complex karyotype
* An individual organ/system impairment score of 4 as assessed by the CIRS definition (e.g. advanced cardiac disease (NYHA class 3 or 4) limiting the ability to receive the study treatment or any other life-threatening illness, medical condition or organ system dysfunction that, in the investigator´s opinion, could compromise the patients safety or interfere with the absorption or metabolism of the study drugs (e.g. inability to swallow tablets or impaired resorption in the gastrointestinal tract)
* Transformation of CLL (Richter transformation)
* Malignancies other than CLL currently requiring systemic therapies
* Uncontrolled or active infection of HIV/PML or any other active infection
* Anticoagulant therapy with warfarin or phenoprocoumon
* Pregnant women and nursing mothers

Where it's running

  • Helios Klinikum Bad Saarow
    Bad Saarow, Germany
    Recruiting
  • DRK Kliniken Berlin Köpenick
    Berlin, Germany
    Recruiting
  • Ev. Diakoniekrankenhaus
    Bremen, Germany
    Recruiting
  • Universitätsklinik Köln
    Cologne, Germany
    Recruiting
  • St. Johannes Hospital
    Dortmund, Germany
    Recruiting
  • Marien Hospital Düsseldorf
    Düsseldorf, Germany
    Recruiting
Show 24 more locations
  • St. Antonius-Hospital
    Eschweiler, Germany
    Recruiting
  • Universitaetsklinikum Essen
    Essen, Germany
    Recruiting
  • Katholisches Krankenhaus Hagen - St. Josefs Hospital
    Hagen, Germany
    Recruiting
  • Universitaetskliniken des Saarlandes
    Homburg, Germany
    Recruiting
  • Klinikum Idar-Oberstein SHG
    Idar-Oberstein, Germany
    Recruiting
  • Staedtisches Klinikum Karlsruhe
    Karlsruhe, Germany
    Recruiting
  • Universitaetsklinikum Schleswig-Holstein Campus Kiel
    Kiel, Germany
    Recruiting
  • Klinikum Landshut
    Landshut, Germany
    Recruiting
  • Klinikum Lippe-Lemgo
    Lemgo, Germany
    Recruiting
  • St Vincenz Krankenhaus
    Limburg, Germany
    Recruiting
  • Universitaetsklinikum Magdeburg
    Magdeburg, Germany
    Recruiting
  • Klinikum Hochsauerland - St. Walburga Krankenhaus
    Meschede, Germany
    Recruiting
  • KH Kliniken Maria Hilf
    Mönchengladbach, Germany
    Recruiting
  • Krankenhaus Muenchen-Schwabing
    Munich, Germany
    Recruiting
  • Klinikum Rechts der Isar - Technische Universitaet Muenchen
    Munich, Germany
    Recruiting
  • Kliniken Ostalb, Stauferklinikum Schwäbisch Gmünd
    Mutlangen, Germany
    Recruiting
  • Klinikum Oldenburg
    Oldenburg, Germany
    Recruiting
  • Brüderkrankenhaus St. Josef Paderborn
    Paderborn, Germany
    Recruiting
  • Universitätsklinik Rostock
    Rostock, Germany
    Recruiting
  • Caritas-Klinik St. Theresia
    Saarbrücken, Germany
    Recruiting
  • Klinikum Sindelfingen-Böbingen
    Sindelfingen, Germany
    Recruiting
  • Marienhospital Stuttgart
    Stuttgart, Germany
    Recruiting
  • Universitaetsklinik Tuebingen
    Tübingen, Germany
    Recruiting
  • Universitätsklinik Ulm
    Ulm, Germany
    Recruiting

Study contacts

  • Principal investigator: Barbara Eichhorst, MD, Prof. — Department I of Internal Medicine, University Hospital Cologne
  • Study coordinator: Barbara Eichhorst, MD, Prof.
  • Email: barbara.eichhorst@uk-koeln.de
  • Phone: +4922147888220

Similar studies

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

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.