Zanubrutinib Induction Followed by Delayed Fixed-Duration Combination With Sonrotoclax for CLL/SLL：Stop Trial 2.0

Starting soon · Phase 2

Conditions studied: CLL / SLL

In brief

The goal of this clinical trial is to learn if zanubrutinib induction followed by delayed fixed-duration combination with sonrotoclax works to treat previously untreated Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL). It will also learn about the safety of this combination regimen. The main questions it aims to answer are:Does this combination therapy achieve undetectable minimal residual disease (uMRD) in participants?What medical problems (adverse events) do participants have when taking zanubrutinib and sonrotoclax?Researchers will conduct a single-arm study to systematically evaluate the MRD clearance, efficacy, safety, and immune-related functions of this specific treatment sequence.Participants will:Low-risk group (without 17p deletion/TP53 mutation): Take zanubrutinib monotherapy for 12 cycles, followed by combination zanubrutinib + sonrotoclax for 12 cycles, then discontinue treatment for observation.High-risk group (with 17p deletion/TP53 mutation): Follow the same initial regimen (12 cycles monotherapy + 12 cycles combination), followed by zanubrutinib monotherapy maintenance until disease progression.Visit the clinic periodically for MRD assessment (via flow cytometry), efficacy evaluation (CT/PET-CT, lab tests), and safety checks (physical exam, blood tests, ECG).Undergo immune function evaluation via peripheral blood samples to assess changes in T-cell counts and subsets.

Key facts

Study ID

NCT07682415

Run by

Yi Shuhua

People needed

60

Starts

2026-06-08

Expected to finish

2034-08-01

Last updated by the study team

2026-07-02

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Aged ≥18 years, no restriction on gender.
• Newly diagnosed chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) consistent with the Chinese Guidelines for the Diagnosis and Treatment of Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (2025 Edition).
• Meet at least one of the following indications for CLL treatment:
• Evidence of progressive bone marrow failure manifested by progressive reduction in hemoglobin and/or platelet counts.
• Massive splenomegaly (spleen palpable >6 cm below the left costal margin) or symptomatic splenomegaly.
• Bulky lymphadenopathy (maximum diameter >10 cm) or symptomatic lymphadenopathy.
• Progressive lymphocytosis: ≥50% increase in lymphocyte count within 2 months, or lymphocyte doubling time (LDT) <6 months. LDT alone shall not serve as an indication for treatment if the baseline lymphocyte count is <30×10⁹/L.
• Symptomatic organ dysfunction caused by CLL/SLL (involving skin, kidney, lung, spine and other organs).
• Autoimmune hemolytic anemia (AIHA) and/or immune thrombocytopenia (ITP) with inadequate response to corticosteroid therapy.
• At least one of the following disease-related B symptoms:
• Unintentional weight loss ≥10% within the preceding 6 months without identifiable cause; ② Severe fatigue (ECOG performance status ≥2, inability to perform routine daily activities);
• ③ Unexplained fever >38.0 °C lasting ≥2 weeks without confirmed infection;
• ④ Unexplained night sweats persisting for more than 1 month without confirmed infection.
• ECOG performance status ≤2.
• Major organ function meets the following criteria within 7 days prior to treatment initiation:
• ￮ Hematology: platelet count ≥30×10⁹/L;
• ￮ Biochemistry: total bilirubin (TBIL) ≤1.5×upper limit of normal (ULN); alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤2.5×ULN; creatinine clearance ≥30 mL/min;
• ￮ Cardiac Doppler echocardiography: left ventricular ejection fraction (LVEF) ≥lower limit of normal (50%).
• Male and female participants agree to use effective contraception throughout the study period and for a minimum of 4 weeks after treatment completion.
• Estimated life expectancy ≥6 months.
• The patient voluntarily participates in the trial and signs the written informed consent form.

You may not qualify if…

• 1. Previously received any systemic anti-tumor therapy for CLL/SLL. 2. Pathologically confirmed transformation to Richter's syndrome via biopsy. 3. Severe non-lymphoma-related hepatic or renal impairment defined as: ALT/AST >3×ULN or TBIL >2×ULN; creatinine clearance <30 mL/min or serum creatinine >2×ULN.
• Significant pre-existing renal, neurological, psychiatric, pulmonary, endocrine, metabolic, immune, cardiovascular or hepatic disease judged by the investigator to compromise trial participation.
• Other uncontrolled clinically significant medical conditions including but not limited to:
• a. Uncontrolled systemic infection (viral, bacterial, fungal); positive hepatitis B surface antigen with HBV-DNA >1000 IU/mL; positive anti-HCV antibody or detectable HCV-RNA; positive anti-HIV antibody.
• b. Active uncontrolled autoimmune diseases other than autoimmune cytopenias. 6. Clinical signs of central nervous system (CNS) dysfunction or documented CNS infiltration by disease.
• Received major surgery (excluding lymph node biopsy) within 14 days prior to enrollment or scheduled to undergo major surgery during trial treatment.
• Inability to swallow capsules, malabsorption syndrome, or severe gastrointestinal disorders including prior gastrectomy, small bowel resection, symptomatic inflammatory bowel disease, ulcerative colitis, partial or complete intestinal obstruction.
• Concurrent use of strong CYP3A inhibitors or inducers during study drug initiation and dose titration period.
• Pregnant or breastfeeding females; females of childbearing potential without reliable contraceptive measures.
• Clinically significant cardiovascular disease (NYHA cardiac functional class III/IV); history of myocardial infarction, malignant arrhythmia (including QTc ≥480 ms), inadequately controlled hypertension (systolic BP ≥150 mmHg, diastolic BP ≥100 mmHg) or unstable angina within 6 months before enrollment.
• Coagulopathy-related exclusion: long-term treatment with multiple high-dose anticoagulants with no possibility of short-term discontinuation; persistent uncontrolled active bleeding; or prior life-threatening irreversible bleeding events.
• History of severe hypersensitivity to any active ingredient or excipient of the investigational product.
• Systemic disorders that may impair patient compliance with trial requirements.

Where it is running

• Shenzhen Second People's Hospital — Shenzhen, Guangdong, China
• Henan Cancer Hospital — Zhengzhou, Henan, China
• The Second Xiangya Hospital of Central South University — Changsha, Hunan, China
• Jiangsu Province Hospital — Nanjing, Jiangsu, China
• The First Affiliated Hospital of Nanchang University — Nanchang, Jiangxi, China
• Qilu Hospital of Shandong University — Jinan, Shandong, China
• Blood Disease Hospital of Chinese Academy of Medical Sciences (Institute of Hematology, CAMS) — Tianjin, Tianjin Municipality, China

Full record on ClinicalTrials.gov

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