A Phase 2 interventional study of Zanubrutinib and sonrotoclax in CLL (Chronic Lymphocytic Leukemia), sponsored by The First Affiliated Hospital with Nanjing Medical University. Recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-06-26.
Sponsored by The First Affiliated Hospital with Nanjing Medical University · Phase 2, Interventional, and Treatment
This study is a prospective, multicenter, open-label, single-arm phase II clinical trial evaluating the efficacy and safety of an MRD-guided, time-limited therapy with zanubrutinib combined with sonrotoclax in previously untreated high-risk CLL/SLL patients.
190 studies on the registry are indexed under Leukemia, B-Cell; 52 are open to participants now.
This study's planned enrollment of 24 is below the median of 39 across 162 interventional studies indexed under Leukemia, B-Cell.
Browse Leukemia, B-Cell studies →The First Affiliated Hospital with Nanjing Medical University is the lead sponsor of 568 studies on the registry; 317 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Age between 18 and 75 years, inclusive. Diagnosis of CLL/SLL according to the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) 2018 criteria.
Meeting iwCLL 2018 treatment indications and carrying at least one high-risk factor, including CLL-IPI high-risk/very high-risk, del(11q), del(17p)/TP53 mutation, unmutated IGHV, or complex karyotype.
: presence of measurable lymphadenopathy by computed tomography (CT) scan.
performance status of 0 to 2.
Adequate major organ function meeting the following criteria:
≥ 6 months. Female subjects of non- (e.g., for ≥ 1 year with amenorrhea, history of hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) are eligible. Female subjects of childbearing potential must have a negative serum pregnancy test at enrollment.
Able to understand and voluntarily sign a written form.
Exclusion Criteria:
Any prior treatment for CLL or SLL (including but not limited to chemotherapy, targeted therapy, immunomodulatory therapy, radiotherapy, and/or monoclonal antibody therapy).
History of other , unless:
Use of > 20 mg/day prednisone within 7 days prior to first dose of study drug (unless used for prophylaxis or treatment of allergic reactions, such as to contrast media).
Known allergic reaction to any of the study drugs. Known to xanthine oxidase inhibitors and/or rasburicase. Subjects with hypersensitivity to xanthine oxidase inhibitors who cannot receive rasburicase will be excluded.
Receipt of a within 4 weeks prior to first dose of study drug.
Active infection requiring systemic therapy that is ongoing or completed within 14 days prior to first dose, or any uncontrolled active systemic infection.
Known bleeding disorders (e.g., von Willebrand disease or hemophilia). History of stroke or intracranial hemorrhage within 6 months prior to enrollment.
Known history of infection, or active virus (HBV) or virus (HCV) infection. Subjects who are positive for HBV core antibody, hepatitis B surface antigen (HBsAg), or HCV antibody must have a negative PCR result prior to enrollment. Subjects with a positive PCR result will be excluded.
Major surgery within 4 weeks prior to first dose. Any life-threatening illness, medical condition, or organ system dysfunction that, in the investigator's judgment, could compromise the subject's safety or pose an undue risk to the study results.
Current active, cardiovascular disease, such as uncontrolled arrhythmia, (NYHA) Class 3 or 4 congestive heart failure, or history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months.
Inability to swallow capsules/tablets, or presence of malabsorption syndrome, disease significantly affecting gastrointestinal function, history of partial or total gastrectomy or small bowel resection, symptomatic inflammatory bowel disease or ulcerative colitis, or partial or complete bowel obstruction.
Concurrent use of warfarin or other vitamin K antagonists. Requirement for treatment with strong cytochrome P450 (CYP) 3A inhibitors. Current active, clinically significant hepatic impairment meeting Class B or C criteria.
Female subjects who are lactating or pregnant. Unwilling or unable to participate in all required study assessments and procedures.
Inability to understand the purpose and risks of the study and to provide a signed and dated form (ICF) and authorization for use of protected health information (in accordance with national and local privacy regulations).
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Absolute neutrophil count (ANC)
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
INR, PT and aPTT (clotting tests)
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Live vaccines
Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Child-Pugh class
A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Zanubrutinib+Sonrotoclax for Pathologically confirmed, treatment-naïve CLL/SLL patients who meet the criteria for treatment initiation and carry at least one high-risk feature.
Drug: Zanubrutinib and sonrotoclax
Drug pages: Zanubrutinib · Sonrotoclax
Zanubrutinib: 160 mg BID, orally, administered until Cycle 15, 21, or 27, and thereafter until discontinuation criteria are met, disease progression, or unacceptable toxicity.(28d/cycle) Sonrotoclax: Starting from Day 1 of Cycle 3, a 4-week dose-escalation regimen is administered until the target dose of 320 mg QD is reached, then administered orally until Cycle 15, 21, or 27, and thereafter until discontinuation criteria are met, disease progression, or unacceptable toxicity. All patients must complete at least 12 cycles of combination therapy with zanubrutinib and sonrotoclax (C4-C15), with a maximum of 24 cycles of combination therapy (C4-C27). If uMRD6 is not achieved after 24 cycles of combination therapy, patients will receive zanubrutinib monotherapy as maintenance. For patients in whom assessment is feasible, treatment discontinuation may be considered upon achieving uMRD6 at any time point. Otherwise, treatment will be continued until disease progression.
uMRD6 rate at Cycle 15
defined as the proportion of patients achieving undetectable minimal residual disease (MRD negativity, \<10-⁶) in peripheral blood as assessed by next-generation sequencing (NGS)
Time frame: At the end of Cycle 15 (each cycle is 28 days)
complete response (CR) rate
Overall response rate is the proportion of patients who achieve a complete response to treatment defined by the iwCLL.
Time frame: On Day 1 of Cycle 7, Day 1 of Cycle 19, Day 1 of Cycle 13, Day 1 of Cycle 16, Day 1 of Cycle 19, End of Treatment (each cycle is 28 days)
3-year Progression-free survival rate
PFS is defined as the time from the first dose of treatment to progression, or death due to any cause, whichever occurs first. For subjects without progression, relapse, or death at the time of analysis, EFS will be censored at the last assessment date.
Time frame: From the first dose of treatment until the date of progression or date of death from any cause, whichever came first.assessed up to 3 years ( 36 month) .
3-year Overall survival tare
OS is defined as the time from the first dose of treatment to death due to any cause. Subjects who remain alive at the time of analysis will be censored at the last known alive date of the subject.
Time frame: lFrom the first dose of treatment until the date of death from any cause, whichever came first.assessed up to 3 years( 36 month) .
uMRD4 and uMRD6 rates of EOT
uMRD4 and uMRD6 rates assessed by flow cytometry and NGS after the actual end of combination therapy.
Time frame: On Day 1 of Cycle 16, Day 1 of Cycle 19, Day 1 of Cycle 22, Day 1 of Cycle 25 (up to 25 cycles, each cycle is 28 days).
Number of participants with any adverse events (Safety assessed by NCI-CTC AE v5.0)
All treatment-emergent AEs will be included in the analysis. For each AE, the number and percentage of subjects who experience at least one occurrence of the given event will be summarized. The number and percent of subjects with TEAEs will be summarized according to intensity (CTCAE, v5) for hematologic toxicity, and drug relationship, as well as categorized by system organ class and preferred term. Summaries, listings, datasets, or subject narratives may be provided, as appropriate, for those subjects who die, who discontinue treatment due to an AE, or who experience a severe AE or a SAE.
Time frame: Safety was evaluated everyday during induction and maintenance therapy. From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 3 years
Plan to share: No
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Studies of the drugs tested here: Zanubrutinib · Sonrotoclax
The First Affiliated Hospital with Nanjing Medical University →