REtreatment With VEnetoclax and Acalabrutinib After Venetoclax Limited Duration (REVEAL)

NCT ID: NCT04523428

Last Updated: 2026-01-06

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-12-23
• Study Completion Date: 2032-12-31

Brief Summary

Fixed-duration regimens containing combinations of venetoclax with CD20 targeting agents are expected to soon become standard practice in first-line patients with chronic lymfocytic leukemia (CLL). The advantage of a fixed duration venetoclax combination as part of first-line treatment is the potential to retreat with venetoclax in patients who develop relapsed disease after a treatment free period. However, efficacy of venetoclax retreatment following a fixed duration venetoclax combination is still hypothetical as clinical data are lacking. Thus, there is an urgent need for data proving efficacy of venetoclax combinations following venetoclax treatment cessation. Testing of a novel venetoclax-containing regimen for relapsed CLL without the repeat of anti-CD20 monoclonal antibody (mAb) is a rational approach.

Detailed Description

First-line venetoclax and CD20 antibody containing regimens that are currently being tested are based on either a fixed duration schedule or on an MRD-based time-limited schedule. The assumption of these regimens is that, aside from the deep (often uMRD) and often longstanding remissions, relapsed disease can be retreated with a venetoclax-based regimen. This, however, has not been formally proven.

In this study, patients who received a first line regimen with either venetoclax and rituximab (GAIA/CLL13/HOVON 140 trial, [NCT02950051] ) or venetoclax and the second generation anti-CD20 antibody obinutuzumab (GAIA/CLL13/HOVON 140 trial, and the HOVON139 trial [Netherlands Trial Registry ID number #NTR6043]) and have relapsed with the need for a subsequent treatment are eligible to enter the study and to receive a combination of venetoclax with the highly selective BTK inhibitor acalabrutinib. Combination of venetoclax with acalabrutinib is expected to lead to uMRD, making discontinuation of therapy possible.

Conditions

CLL/SLL

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Venetoclax/Acalabrutinib

All patients will receive a lead-in with 2 cycles of acalabrutinib 100 mg bid. Hereafter patients will continue with ramp-up of venetoclax followed by daily 400 mg venetoclax in combination with acalabrutinib for 24 cycles. Patients will be treated until they have received a total of 26 cycles or until progression, whichever comes first.

Group Type: EXPERIMENTAL

Venetoclax/Acalabrutinib

Intervention Type: DRUG

All patients will receive a lead-in with 2 cycles of acalabrutinib 100 mg bid. Hereafter patients will continue with ramp-up of venetoclax followed by daily 400 mg venetoclax in combination with acalabrutinib for 24 cycles. Patients will be treated until they have received a total of 26 cycles or until progression, whichever comes first.

Interventions

Venetoclax/Acalabrutinib

All patients will receive a lead-in with 2 cycles of acalabrutinib 100 mg bid. Hereafter patients will continue with ramp-up of venetoclax followed by daily 400 mg venetoclax in combination with acalabrutinib for 24 cycles. Patients will be treated until they have received a total of 26 cycles or until progression, whichever comes first.

Intervention Type: DRUG

Other Intervention Names

Venclexta; Venclyxto

Eligibility Criteria

Inclusion Criteria

• Documented CLL or SLL requiring treatment according to IWCLL criteria (appendix A) after at least (clinical) partial response as best response after the following initial study treatment: venetoclax-rituximab in HOVON 140/GAIA or venetoclax-obinutuzumab in HOVON 139/GIVE or HOVON 140/GAIA;
• WHO/ECOG performance status 0-3 (appendix C), stage 3 only if attributable to CLL
• Age at least 18 years;
• Adequate BM function defined as:

• Hemoglobin >5 mmol/l or Hb > 8 g/dL
• Absolute neutrophil count (ANC) >0.75 x 109/L (750/μL), unless directly attributable to CLL infiltration of the BM, proven by BM biopsy
• Platelet count >30 x 109/L (30,000/μL) without transfusion and irrespective whether it is attributable to CLL infiltration in the BM;
• Estimated Glomerular Filtration Rate (eGFR) (MDRD) or estimated creatinine clearance (CrCl ≥ 30ml/min (Cockcroft-Gault appendix E); Please note: in case eGFR or CrCl is <50ml/min the patient needs to be considered high risk for TLS
• Adequate liver function as indicated:

• Serum aspartate transaminase (ASAT) and alanine transaminase (ALAT) ≤ 3.0 x upper limit of normal (ULN);
• Bilirubin ≤1.5 x ULN (unless bilirubin rise is due to Gilbert's syndrome or of nonhepatic origin);
• Prothrombin time (PT)/International normal ratio (INR) <1.5 x ULN and activated partial thromboplastin time (aPTT) <1.5 x ULN;
• Negative serological testing for hepatitis B virus (HBV) (Hepatitis B surface antigen (HBsAg) negative and hepatitis B core antibody (anti-HBc) negative) and hepatitis C virus (hepatitis C antibody). Subjects who are positive for anti-HBc or hepatitis C antibody may be included if they have a negative PCR within 6 weeks before enrollment. Those who are PCR positive will be excluded; Please note: For patients positive for anti-HBc HBV-DNA PCR has to be repeated every month until 12 months after last dose of study treatment.
• Patient is able and willing to adhere to the study visit schedule and other protocol requirements;
• Patient is capable of giving informed consent;
• Written informed consent.

Exclusion Criteria

• Any prior therapy with BTK inhibitor;
• Prior treatment with venetoclax other than first line;
• Other therapy with exception of chemo-/immunotherapy which is allowed also after venetoclax first line relapse;
• Transformation of CLL (Richter's transformation);
• Patient with a history of confirmed progressive multifocal leukoencephalopathy (PML);
• Malignancies other than CLL currently requiring systemic therapy or not treated in curative intention or showing signs of progression after curative treatment;
• Known allergy to xanthine oxidase inhibitors and/or rasburicase;
• History of drug-specific hypersensitivity or anaphylaxis to any study drug (including active product or excipient components);
• Active bleeding or history of bleeding diathesis (e.g. hemophilia or von Willebrand disease);
• Active fungal, bacterial, and/or viral infection that requires systemic therapy; Please note: active controlled as well as chronic/recurrent infections are at risk of reactivation/infection during treatment;
• Concurrent severe and/or uncontrolled medical condition (e.g. uncontrolled: infection, auto-immune hemolysis, immune thrombocytopenia, diabetes, hypertension, hyperthyroidism or hypothyroidism etc.);
• Patient known to be HIV-positive;
• Patient requiring treatment with a strong cytochrome P450 (CYP) 3A inhibitor/inducer (see appendix J) or anticoagulant therapy with warfarin or phenoprocoumon or other vitamin K antagonists; Please note: Patients being treated with DOACs apixaban, edoxaban or rivaroxaban can be included, but must be properly informed about the potential risk of bleeding under treatment with acalabrutinib. (see appendix J)
• History of stroke or intracranial hemorrhage within 6 months prior to registration;
• Severe cardiovascular disease (arrhythmias requiring chronic treatment, congestive heart failure or symptomatic ischemic heart disease, myocardial infarction within 6 months) (CTCAE grade III-IV, see appendix D);
• Severe pulmonary dysfunction (CTCAE grade III-IV, see appendix D);
• Severe neurological or psychiatric disease (CTCAE grade III-IV, see appendix D);
• Patient who has difficulty with or are unable to swallow oral medication, or have significant gastrointestinal disease that would limit absorption of oral medication;
• Vaccination with live vaccines within 28 days prior to registration;
• Use of any other experimental drug or therapy within 28 days of registration;
• Major surgery within 28 days prior to registration;
• Steroid therapy within 10 days prior to registration, with the exception of inhaled steroids for asthma, topical steroids, steroids up to 20 mg or dose equivalents of prednisolone daily to control autoimmune phenomenon's, or replacement/stress corticosteroids;
• Pregnant women and nursing mothers;
• Fertile men or women of childbearing potential unless: (1) surgically sterile or ≥ 2 years after the onset of menopause; (2) willing to use a highly effective contraceptive method such as oral contraceptives, intrauterine device, sexual abstinence or combination of male condom with either cap, diaphragm, or sponge with spermicide (double barrier methods) during study treatment and for 30 days after end of treatment;
• Current participation in other clinical trial (other than follow up HOVON139/HOVON140);
• Any psychological, familial, sociological and geographical condition potentially hampering compliance with the study protocol and follow-up schedule.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Stichting Hemato-Oncologie voor Volwassenen Nederland

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

A. Kater

Role: PRINCIPAL_INVESTIGATOR

AMC/HOVON

Locations

BE-Bruxelles-STLUC

Brussels, , Belgium

Site Status: RECRUITING

BE-Leuven-UZLEUVEN

Leuven, , Belgium

Site Status: RECRUITING

DK-Aarhus N-AUH

Aarhus, , Denmark

Site Status: RECRUITING

NL-Den Bosch-JBZ

's-Hertogenbosch, , Netherlands

Site Status: RECRUITING

NL-Amsterdam-AMC

Amsterdam, , Netherlands

Site Status: RECRUITING

NL-Arnhem-RIJNSTATE

Arnhem, , Netherlands

Site Status: RECRUITING

NL-Breda-AMPHIA

Breda, , Netherlands

Site Status: RECRUITING

NL-Delft-RDGG

Delft, , Netherlands

Site Status: RECRUITING

NL-Dordrecht-ASZ

Dordrecht, , Netherlands

Site Status: RECRUITING

NL-Ede-ZGV

Ede, , Netherlands

Site Status: RECRUITING

NL-Eindhoven-MAXIMAMC

Eindhoven, , Netherlands

Site Status: RECRUITING

NL-Groningen-UMCG

Groningen, , Netherlands

Site Status: RECRUITING

NL-Leeuwarden-MCL

Leeuwarden, , Netherlands

Site Status: RECRUITING

NL-Maastricht-MUMC

Maastricht, , Netherlands

Site Status: RECRUITING

NL-Nieuwegein-ANTONIUS

Nieuwegein, , Netherlands

Site Status: RECRUITING

NL-Rotterdam-IKAZIA

Rotterdam, , Netherlands

Site Status: RECRUITING

NL-Rotterdam-MAASSTADZIEKENHUIS

Rotterdam, , Netherlands

Site Status: RECRUITING

NL-Utrecht-UMCUTRECHT

Utrecht, , Netherlands

Site Status: RECRUITING

Countries

Belgium; Denmark; Netherlands

Central Contacts

A. Kater

Role: CONTACT

a.p.kater@amsterdamumc.nl

+31 20 5665785

H. Visser

Role: CONTACT

hovon@erasmusmc.nl

+31 10 7041560

Related Links

http://www.hovon.nl

Website of the HOVON organisation

Other Identifiers

HO159

Identifier Type: -

Identifier Source: org_study_id