Recruiting

Acalabrutinib vs. Investigator's Choice

Sponsor:

AstraZeneca

Code:

NCT06651970

Conditions

Chronic Lymphocytic Leukaemia

Moderate to Severe Cardiac Impairment

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

Interventions

Acalabrutinib

Investigator's choice of treatment

Study Details

Brief summary:

This will be a global Phase IV, open-label, randomised study to evaluate the safety and tolerability of acalabrutinib (monotherapy, 100 mg orally \[po\], twice daily \[bd\]) compared to investigator's choice of treatment, in patients with CLL (TN or R/R) and moderate to severe cardiac impairment. Patients with moderate to severe cardiac impairment will include those with moderate to severe cardiac conditions, who may have been excluded from previous acalabrutinib clinical trials and in whom the safety of acalabrutinib was not systematically assessed.

The study is planned to take place in approximately 25 centres globally. The study will be conducted in centres that have established close collaboration between the Haematology and Cardiology divisions, preferably with a cardio-oncologist on the team.

An IDMC will be responsible for making recommendations for study continuation.

Conditions

Chronic Lymphocytic Leukaemia

Moderate to Severe Cardiac Impairment

Study ID

NCT06651970

Start date

Feb 4, 2025

Status verified date

Aug, 2026

Completion date

Aug 16, 2030

Anticipated

Primary completion date

Aug 16, 2030

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. Men and women ≥ 18 years of age, at the time of signing the informed consent.
2. Eastern Cooperative Oncology Group performance status of 0 to 3
3. Meet at least one of the following cardiovascular inclusion criteria: - Left ventricular ejection fraction (LVEF) < 50% as assessed by local ECHO at screening. - History of heart failure or meeting Universal Definition of Heart Failure at screening, regardless of current LVEF. - History of ischaemic heart disease (IHD) including acute coronary syndrome, myocardial infarction, or coronary revascularization (percutaneous coronary intervention/stent or coronary artery bypass surgery). - Diagnosis of cardiomyopathy - Ongoing clinically significant (symptomatic or requiring intervention) cardiac arrhythmia, including atrial fibrillation or other arrhythmias. - History of moderate or severe cardiac valvular diseases as documented per cardiac imaging
4. Diagnosis of CLL
5. Treatment naïve or relapsed/refractory patients who have received no more than 2 prior lines of systemic anti-CLL treatment.
6. Active disease per iwCLL 2018 criteria that requires treatment.
7. Meet the following laboratory parameters:

1. Absolute neutrophil count (ANC) ≥ 500 cells/μL (0.50 × 109/L).
2. Platelet count ≥ 30,000 cells/μL (30 × 109/L).
3. Serum aspartate aminotransferase and ALT ≤ 3.0 × ULN.
4. Total bilirubin ≤ 1.5 × ULN unless directly attributable to Gilbert's syndrome.
5. Estimated creatinine clearance (ie, estimated glomerular filtration rate \[eGFR\] using Cockcroft-Gault) ≥ 40 mL/min, or serum creatinine ≤ 2 × ULN.
8. Women and men who are sexually active and can bear children must agree to use highly effective forms of contraception while on the study and for 2 days after the last dose of acalabrutinib.
9. Patients must be willing and able to adhere to the study visit schedule, understand, and comply with other protocol requirements, and provide written informed consent and authorisation to use protected health information (in accordance with national and local patient privacy regulations). Note: vulnerable patients, as defined in the ICH GCP, are not allowed on this protocol (eg, prisoners or institutionalised patients).

Exclusion Criteria:

1. Known active CNS leukaemia, leptomeningeal disease or spinal cord compression. In case of R/R patients with prior history of CNS localisation of leukaemia who received treatment are eligible provided that there is no evidence of CNS involvement at study entry as documented by cerebrospinal fluid (CSF) cytology and/or brain MRI.
2. Ongoing Richter's transformation.
3. Prior exposure to a BTKi.
4. Major surgery within 30 days before first dose of study treatment.
5. Uncontrolled haemolytic anaemia.
6. Received any investigational drug within 30 days or 5 half-lives (whichever is shorter) before first dose of study treatment.
7. Received a live virus vaccination within 28 days of first dose of study treatment.
8. History of or ongoing confirmed PML.
9. History of prior malignancy except for the following:

1. Prior history of malignancy with no evidence of active disease present for more than

3 years before screening or felt to be at low risk for recurrence by treating physician.

(b) Adequately treated lentigo maligna melanoma without current evidence of disease or adequately resected non-melanomatous skin cancer (ie, basal cell carcinoma or squamous cell carcinoma of the skin). (c) Curatively treated in situ carcinoma of the cervix or carcinoma in situ of the prostate at any time prior to study without current evidence of disease. 10 Unable to swallow tablets or malabsorption syndrome, or disease significantly affecting gastrointestinal function, or resection of the stomach or small bowel or gastric bypass, symptomatic inflammatory bowel disease, or partial or complete bowel obstruction.

11 Active uncontrolled systemic infection (bacterial, fungal, viral or other) or clinically significant localised infection. 12 Known history of infection with human immunodeficiency virus (HIV). 13 Serologic status reflecting active HepB or HepC infection.

(a) Patients with HepB core antibody positive who are surface antigen negative or who are HepC antibody positive will need to have a negative polymerase chain reaction (PCR) result before randomisation and must be willing to undergo deoxyribonucleic acid (DNA) PCR testing during the study. (b) Patients who are HepB surface antigen positive or HepB PCR positive and those who are HepC PCR positive will be excluded. 14 History of stroke or intracranial haemorrhage within 6 months prior to randomisation.

15 History of bleeding diathesis (eg, haemophilia, von Willebrand disease). 16 Requires or receiving anticoagulation with warfarin or equivalent vitamin K antagonists (eg, phenprocoumon) within 7 days of first dose of study treatment. Direct anti-X (DOACs) or low molecular weight heparins (LMWH, eg, enoxaparin) on stable dosing schedule is allowed. 17 Requires treatment with a strong cytochrome P450 3A (CYP3A) inhibitor/inducer. The use of strong CYP3A inhibitors within 1 week or strong CYP3A inducers within 3 weeks of the first dose of study treatment is prohibited. 18 Breastfeeding or pregnant. 19 Concurrent participation in another therapeutic clinical trial. 20 Uncontrolled cardiac/cardiovascular disease including the following:

1. Baseline cardiac troponin (cTnI or cTnT or hs-cTn) levels greater than the upper limit of normal (per the local laboratories reference range) that is due to an acute coronary event and cannot be fully explained by non-ischaemic conditions.
2. Uncontrolled cardiac tachyarrhythmias (sinus, atrial or ventricular) that require new/additional therapy within the last month.
3. Clinically significant QT prolongation defined as QT interval corrected by Fridericia's formula (QTcF) values; QTcF > 500 ms.
4. Any of the following within the last 3 months:

i. Unstable IHD: percutaneous coronary intervention, coronary artery bypass surgery, or an episode of acute coronary syndrome including acute myocardial infarction and unstable angina pectoris. ii. Major cardiac surgery/procedures or valvular surgery. iii. Hospitalization due to heart failure. 21 Uncontrolled hypertension despite optimal management 22 Current life-threatening illness, medical conditions, organ system dysfunction or lifestyle habits which, in the investigator's opinion, could compromise the patient's safety or ability to adhere to the study protocol.

Study Design

Enrollment

60 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Other

Interventions and Outcome Measures

Arms

active comparator: Treatment Arm A (Acalabrutinib Monotherapy)

All participants randomised to Arm A will receive treatment with the investigational product acalabrutinib.

other: Treatment Arm B

Patients in Arm B will receive investigator's choice of treatment its duration will be based on standard duration of therapy for that regimen or until disease progression/patient withdrawal/study termination, whichever occurs first.

Interventions

Acalabrutinib

Acalabrutinib Monotherapy

Investigator's choice of treatment

control arm treatment type will be defined by the PI prior to randomisation

Primary outcome measure

  • Safety endpoints 1: To evaluate the incidence of CV (CardioVascular) adverse events leading to drug discontinuation after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 2: To evaluate the duration on treatment prior to drug discontinuation due to CV adverse events after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 3: To evaluate the incidence of life threatening and fatal cardiac events of interest after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 4: To evaluate the frequency of grade≥3 Adverse events after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 5: To evaluate the frequency of AESI per Acalabrutinib IB after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 6: To evaluate the rate of discontinuation due to non-CV adverse events after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]
  • Safety endpoints 7: To evaluate the rate of any serious adverse event after acalabrutinib treatment compared to investigators choice of treatment. [ Time Frame: Visits are screening+ 8 visits( every 4 weeks) and then every 16 weeks until termination of the study which would be 4 years from the last subject randomized. ]

Central Contacts and Locations

Central contacts

AstraZeneca Clinical Study Information Center

1-877-240-9479information.center@astrazeneca.com

Locations

Research Site

Recruiting

Columbus, Ohio, United States, 43210

Research Site

Recruiting

Philadelphia, Pennsylvania, United States, 19104

More Information

Sponsor

AstraZeneca

Last update posted

Aug 14, 2026

Last verified

Aug, 2026

Keywords

  • Hemic Diseases
  • Lymphatic Diseases

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-08. This information was provided to ClinicalTrials.gov by AstraZeneca on 2026-08-14.