Reassessment of the Risk of Hemolytic Syndrome in Patients With Chronic Lymphocytic Leukemia Treated With a Regimen Containing Venetoclax
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Cervical, Thoracic, Abdominal, and Pelvic CT Scan.
- Who it may be relevant to
- Registry conditions: Chronic Lymphoid Leukemia. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- France
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
Chronic lymphocytic leukemia is a malignant blood disorder characterized by the proliferation of abnormal B lymphocytes in the blood, lymph nodes, and bone marrow. It generally occurs after age 70 and is the fourth most common blood cancer in France, following multiple myeloma, diffuse large B-cell lymphoma, and myelodysplastic syndromes. Treatments have advanced since 2015 with the introduction of immunotherapy and targeted therapies. The BCL2 inhibitor (venetoclax) is one of these innovative treatments. It is recommended as first-line therapy and for relapse in combination with anti-CD20 monoclonal antibodies and Bruton's tyrosine kinase inhibitors. Early studies showed that initial administration of venetoclax as monotherapy could lead to lysis syndrome as early as the first few days of treatment. This risk was correlated with the venetoclax dose and tumor burden. Prevention guidelines were subsequently proposed to guide management. This risk is therefore assessed before treatment begins (low, moderate, high), based on lymph node size and circulating lymphocyte count. For patients at moderate and high risk, a treatment strategy is recommended that includes hyperhydration and uric acid-lowering agents, which may require hospitalization in some cases. The introduction of combination therapies has improved the depth and duration of response (obinutuzumab + venetoclax and ibrutinib + venetoclax). Venetoclax is added after the initiation of partner agents (22 days after obinutuzumab and 3 cycles after ibrutinib). This initial phase of treatment may reduce the risk of hemolytic syndrome. We propose here to reassess the risk of hemolytic syndrome before starting venetoclax in order to simplify management.
Interventions
- Procedure Cervical, Thoracic, Abdominal, and Pelvic CT Scan
Cervical, Thoracic, Abdominal, and Pelvic CT Scan
Primary outcome measures
- risk level for tumor lysis syndrome [Time frame: Basal - 7 days before introduction of Venetoclax]
Secondary outcome measures (6)
- Event-free survival [Time frame: From enrollment until the first event of interest, assessed up to 26 months.]
- Change from baseline in EORTC QLQ-CLL17 total score [Time frame: Baseline, Month 3, Month 6, and end of treatment (up to 26 months).]
- Progression-free survival [Time frame: From enrollment until disease progression or death, assessed up to 26 months.]
- Overall Survival [Time frame: From enrollment until death from any cause, assessed up to 26 months.]
- Overall Response Rate [Time frame: End of treatment (up to 26 months).]
- Treatment Reduction or Discontinuation Rate [Time frame: From treatment initiation to end of treatment (up to 26 months).]
Eligibility criteria
Inclusion criteria
- Patients with chronic lymphocytic leukemia/lymphocytic lymphoma
- Meeting the treatment criteria according to iwCLL 2018
- Eligible for treatment with venetoclax in combination with a Bruton's tyrosine kinase inhibitor (ibrutinib, other approved generations) or obinutuzumab
- First-line treatment or relapse
Exclusion criteria
- Patients with meningeal and/or cerebral involvement
- Patients with an active, uncontrolled infection
- Patients scheduled to receive venetoclax monotherapy or rituximab-venetoclax according to the MURANO study regimen (Murano regimen: venetoclax is administered before rituximab)
- Contraindications to contrast-enhanced CT scanning (severe renal insufficiency, documented allergy to contrast agents).
- Pregnancy or breastfeeding
- Individuals deprived of their liberty, under legal guardianship, or under conservatorship
- Dementia, mental impairment, or psychiatric disorder that could compromise the patient's ability to provide informed consent and/or to adhere to the protocol and follow-up requirements of the trial
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
France · 2 centers
- Clinique de l'Europe — Amiens
- Hôpital Privé du Confluent — Nantes
Identifiers
NCT: NCT07691047 · 2025-50-HPC