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Spots Global Cancer Trial Database for A Phase-3-trial of Acalabrutinib, Obinutuzumab & Venetoclax Compared to Obinutuzumab and Venetoclax in Previously Untreated Patients With High Risk CLL

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Trial Identification

Brief Title: A Phase-3-trial of Acalabrutinib, Obinutuzumab & Venetoclax Compared to Obinutuzumab and Venetoclax in Previously Untreated Patients With High Risk CLL

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 (17P-deletion, TP53-mutation or Complex Karyotype) Chronic Lymphatic Leukemia (CLL)

Study ID: NCT05197192

Study Description

Brief Summary: This multicenter, prospective, open-label, randomized, superiority phase 3 study is designed to demonstrate that treatment with a triple combination of acalabrutinib, obinutuzumab and venetoclax (GAVe) prolong the progression-free survival (PFS) as compared to treatment with the combination of obinutuzumab and venetoclax (GVe) in pa-tients with high risk CLL (defined as having at least one of the follow-ing risk factors: 17p-deletion, TP53-mutation or complex karyotype).

Detailed Description: CLL is the most frequent leukemia in industrialized countries. International guidelines agree on diagnosis and management of this disease. The clinical course of CLL is highly variable and can be predicted by clinical staging (according to Rai and Binet) as well as genetic, serum markers and risk models. This study is designed for a randomized comparison of two different, non-chemotherapeutic and fixed-duration modalities for patients with high risk chronic lymphocytic leukemia (CLL) and addresses a high medical need, since high risk-CLL represents a so far incurable, aggressive cancer. The high risk-group of CLL patients can be identified by molecular characteristics, allowing the inclusion of a clearly described group of patients: 17p-deletion, TP53-mutation and/or complex karyotype.TP53 defects are the strongest prognostic factors for non-response to chemotherapy. Patients harboring TP53 defects should be treated with chemotherapy-free regimens. Complex karyotype (CKT), defined as the presence of three or more chromosomal aberrations in two or more metaphases is associated with a poorer outcome in various hematologic malignancies, including chronic lymphocytic leukemia (CLL). In CLL, CKT is one of several well established adverse prognostic factors, comparable to 17p-deletion, TP53-mutation or unmutated IGHV status. Depending on age and prior exposure to chemotherapy, 10-30% of patients with CLL exhibit CKT. A broad body of evidence has suggested a predictive prognostic value of CKT. Despite considerable advances with chemoimmunotherapy in the treatment of frontline as well as relapsed/refractory (r/r) CLL, outcome of patients with CKT remains poor. To date, a randomized comparison to optimize the treatment of patients with high risk disease defined as either the presence of TP53 aberrations or CKT, by novel agents has not been performed. Patients with high risk CLL (TP53-defects and/or CKT) have a poor outcome with chemoimmunotherapy and do not benefit to the same extent from approved regimen such as continuous treatment of ibrutinib or 12 months treatment with obinutuzumab plus venetoclax. Monotherapy with BTK-inhibitor is less effective in those patients as compared with patients without high risk disease. Venetoclax combined with the anti-CD20 monoclonal antibody obinutuzumab offers a highly effective fixed-duration treatment option with a manageable toxicity profile. The recent results of the CLL14 study define a new standard of a fixed 12-months treatment with obinutuzumab and venetoclax in previously untreated patients yielding a major benefit also for patients with high risk disease as compared to chemoimmunotherapy. However, high risk patients appear to progress earlier than low risk patients and the therapy is not clearly curative so far. Acalabrutinib is a second generation, selective BTK inhibitor which has shown promising overall response rates in patients with relapsed CLL or patients intolerant to ibrutinib. The development of acalabrutinib focussed on minimization of off-target activity. Results of a three-arm study investigating the combination of acalabrutinib plus obinutuzumab versus acalabrutinib alone versus chlorambucil plus obinutuzumab (NCT02475681) showed a substantial improvement of PFS for the combination arm and the monotherapy versus the standard chemoimmunotherapy regimen. The addition of a BTK-inhibitor, such as acalabrutinib to obinutuzumab and venetoclax has the potential to result in a better outcome, because synergistic effects have been reported between BTK inhibitors and B-cell lymphoma 2 (BCL-2) inhibitors or for BCL-2 inhibitors and monoclonal antibodies. Synergistic effects, which are expected to reduce early progressions or insufficient responses, are in particular important for this high risk population. The triple combination of acalabrutinib, obinutuzumab (or rituximab) and venetoclax has been investigated in a phase 1 b- study and had a tolerable safety profile with minimal to no drug-drug interactions, results of a phase 2 trial studying the same combination showed that the triple combination was highly active with 78% undetectable MRD levels in the bone marrow . Currently, the GCLLSG conducts phase 2 studies, investigating a triple combination consisting of BTK- and Bcl2-inhibitors and monoclonal antibodies (CLL2GIVe: NCT02758665; CLL2BAAG: NCT03787264) and a large phase 3 trial with one experimental arm with a triple combination (CLL13, NCT02950051) but results are not yet published. Acalabrutinib, venetoclax and obinutuzumab is now being studied in a registrational phase 3 trial CL-311 (NCT03836261) against the current standard of chemoimmunotherapy (fludarabine/cyclophosphamide/rituximab (FCR), bendamustine/rituximab (BR) in patients without 17p-deletion or TP53-mutation. Acalabrutinib is indicated in Germany as monotherapy or in combination with obinutuzumab for the treatment of adult patients with treatment-naive chronic lymphocytic leukemia (CLL) and as monotherapy for the treatment of adult patients with relapsed chronic lymphocytic leukemia (CLL).

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Helios Klinikum Bad Saarow, Bad Saarow, , Germany

DRK Kliniken Berlin Köpenick, Berlin, , Germany

Ev. Diakoniekrankenhaus, Bremen, , Germany

St. Johannes Hospital, Dortmund, , Germany

Marien Hospital Düsseldorf, Düsseldorf, , Germany

St. Antonius-Hospital, Eschweiler, , Germany

Universitaetsklinikum Essen, Essen, , Germany

Katholisches Krankenhaus Hagen - St. Josefs Hospital, Hagen, , Germany

Universitaetskliniken des Saarlandes, Homburg, , Germany

Klinikum Idar-Oberstein SHG, Idar-Oberstein, , Germany

Staedtisches Klinikum Karlsruhe, Karlsruhe, , Germany

Universitaetsklinikum Schleswig-Holstein Campus Kiel, Kiel, , Germany

Universitätsklinik Köln, Köln, , Germany

Klinikum Landshut, Landshut, , Germany

Klinikum Lippe-Lemgo, Lemgo, , Germany

St Vincenz Krankenhaus, Limburg, , Germany

Universitaetsklinikum Magdeburg, Magdeburg, , Germany

Klinikum Hochsauerland - St. Walburga Krankenhaus, Meschede, , Germany

Krankenhaus Muenchen-Schwabing, Munich, , Germany

Klinikum Rechts der Isar - Technische Universitaet Muenchen, Munich, , Germany

Kliniken Ostalb, Stauferklinikum Schwäbisch Gmünd, Mutlangen, , Germany

KH Kliniken Maria Hilf, Mönchengladbach, , Germany

Klinikum Oldenburg, Oldenburg, , Germany

Brüderkrankenhaus St. Josef Paderborn, Paderborn, , Germany

Universitätsklinik Rostock, Rostock, , Germany

Caritas-Klinik St. Theresia, Saarbrucken, , Germany

Klinikum Sindelfingen-Böbingen, Sindelfingen, , Germany

Marienhospital Stuttgart, Stuttgart, , Germany

Universitaetsklinik Tuebingen, Tübingen, , Germany

Universitätsklinik Ulm, Ulm, , Germany

Contact Details

Name: Barbara Eichhorst, MD, Prof.

Affiliation: Department I of Internal Medicine, University Hospital Cologne

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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