ClinicalTrials.gg
Not yet recruitingNCT07812246Updated Sep 10, 2026

Zanubrutinib and Sonrotoclax for the Treatment of Relapsed Chronic Lymphocytic Leukemia /Small Lymphocytic Leukemia, ZeuS-2 Trial

A Phase 2 interventional study of Biospecimen Collection and Bone Marrow Aspiration in Recurrent Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma, sponsored by City of Hope Medical Center. Not yet recruiting at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-10.

Sponsored by City of Hope Medical Center · Phase 2, Interventional, and Treatment

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Phase
Phase 2
Study type
Interventional
Enrollment
44
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 11 studies testing sonrotoclax in Leukemia, Lymphocytic, Chronic, B-Cell — 8 open to participants now, 11 under way, 4 of them phase 3. sonrotoclax · Leukemia, Lymphocytic, Chronic, B-Cell.

Planned enrollment
9th of 11
44 · median 100
Started
2027
the only one that year
Phase 2
5 of 11
3 open now
Primary completion
2028-08
later than 3 of 10 live
Registered
11th of 11
by date
Lead sponsor
2 of 11
City of Hope Medical Center

Among the 11 studies testing sonrotoclax in Leukemia, Lymphocytic, Chronic, B-Cell, this one is the 9th largest by planned enrollment, is the only one that started in 2027, is one of 5 in phase 2, reaches primary completion later than 3 of the 10 other live ones, and was the 11th registered.

Leukemia, Lymphocytic, Chronic, B-Cell

2,036 studies on the registry are indexed under Leukemia, Lymphocytic, Chronic, B-Cell; 237 are open to participants now.

Browse Leukemia, Lymphocytic, Chronic, B-Cell studies →

Open to participants now

8 of the 11 studies testing sonrotoclax in Leukemia, Lymphocytic, Chronic, B-Cell are open now, in 12 countries. Recruiting first, the newest first:

2 more — sign in →

By country, each count listing its studies:

All 8 open studies →

About sonrotoclax

sonrotoclax: first FDA approval 2026 (BEQALZI). What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 188 Leukemia, Lymphocytic, Chronic, B-Cell studies recruiting now, 150 (80%) set no upper age limit and 15 (8%) stop at 75 or younger; 17 take children under 18; 13 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 11 studies testing sonrotoclax in Leukemia, Lymphocytic, Chronic, B-Cell, or all of them as a file.
02

Study summary

This phase II trial tests how well giving zanubrutinib and sonrotoclax works for the treatment of chronic lymphocytic leukemia (CLL)/small lymphocytic leukemia (SLL) that has come back after a period of improvement (relapsed). Zanubrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Sonrotoclax is in a class of medications called B-cell lymphoma-2 (BCL-2) and BCL-XL inhibitors. It may stop the growth of tumor cells and may kill them by blocking Bcl-2 and Bcl-XL, proteins needed for cell survival. Giving zanubrutinib and sonrotoclax may work well for the treatment of relapsed CLL/SLL.

Read the detailed description

PRIMARY OBJECTIVE:

I. Estimate overall response rate (ORR).

SECONDARY OBJECTIVES:

I. Estimate complete response (CR) rate. II. Estimate minimal residual disease (MRD) negativity by flow cytometry every 6 months.

III. Estimate progression-free survival (PFS) at 2, 3, and 5 years. IV. Estimate duration of response (DOR) at 2, 3, and 5 years. V. Estimate overall survival (OS) at 2, 3, and 5 years.

EXPLORATORY OBJECTIVES:

I. Identify mechanisms of resistance. II. Evaluate effect of treatment on immune cell repertoire. III. Evaluate clinical outcome stratified by first line therapy (anti-CD20 containing therapy: Yes versus [vs.] No) and time since stopping first line therapy (greater than 2 years: Yes vs. No).

OUTLINE:

CYCLE 1-4: Patients receive zanubrutinib orally (PO) once daily (QD) on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.

CYCLE 5+: Patients receive zanubrutinib PO QD and sonrotoclax PO QD on days 1-28 of each cycle. Cycles repeat every 28 days for up to 24 cycles in the absence of disease progression or unacceptable toxicity.

Patients undergo bone marrow biopsy and aspiration, computed tomography (CT) scan/magnetic resonance imaging (MRI) and blood sample collection throughout the study. Patients may undergo lymph node biopsy during screening and optionally at time of progression.

After completion of study treatment, patients are followed up at 30 days. Patients who discontinue study drug due to reasons other than disease progression will be followed every 3 months until patient exhibits first progression for up to 5 years. Patients who discontinue study drug and have progressed are followed up every 6 months for up to 5 years.

03

Conditions studied

  • Recurrent Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  • Documented of the participant and/or legally authorized representative.

    • Assent, when appropriate, will be obtained per institutional guidelines
  • Age: ≥ 18 years
  • (ECOG) ≤ 2
  • Histological or flow cytometry confirmed diagnosis of B-CLL/SLL as documented by medical records and with histology based on criteria established by the World Health Organization (WHO)
  • CLL has progressed at least 6 months after completion of fixed-duration novel drug (non-chemotherapy) regimen, including but not limited to venetoclax (V) + CD20 monoclonal antibody (monoclonal antibody [mAb], e.g., obinutuzumab (O); BTK inhibitor (zanubrutinib or acalabrutinib or ibrutinib) + V ± CD20 mAb
  • Active disease meeting criteria for requiring treatment per the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) 2018 guidelines (one of the following):

    • A minimum of any one of the following constitutional symptoms:

      • Unintentional weight loss > 10% within the previous 6 months prior to screening.
      • Extreme fatigue (unable to work or perform usual activities).
      • Fevers of greater than 100.5°F for ≥ 2 weeks without evidence of infection.
      • Night sweats without evidence of infection.
    • Evidence of progressive marrow failure as manifested by the development of, or worsening of anemia or thrombocytopenia.
    • Massive (i.e., > 6 cm below the left costal margin), progressive or symptomatic splenomegaly.
    • Massive nodes or clusters (i.e., > 10 cm in longest diameter) or progressive lymphadenopathy.
    • Progressive lymphocytosis with an increase of > 50% over a 2-month period, or an anticipated doubling time of less than 6 months.
    • anemia or thrombocytopenia that is poorly responsive to .
    • Symptomatic or functional extranodal involvement (e.g., skin, kidney, lung, spine)
  • Fully recovered from the acute toxic effects (except alopecia) to ≤ grade 1 to prior anti-cancer therapy
  • Without bone marrow involvement: (ANC) ≥ 1,000/mm\^3, with bone marrow involvement: ANC ≥ 500/mm\^3

    • NOTE: Growth factor is not permitted within 7 days of ANC assessment unless cytopenia is secondary to disease involvement.

Neupogen or biosimilar may be administered for patients with ANC \< 1000 with risk for development of febrile neutropenia as determined by treating physician. Dosing will be at 5 mcg/kg rounded to the nearest vial size

  • Without bone marrow involvement: ≥ 50,000/mm\^3, with bone marrow involvement: platelets ≥ 30,000/mm\^3

    • NOTE: Platelet transfusions are not permitted within 7 days of platelet assessment unless cytopenia is secondary to disease involvement
  • ≥ 7 g/dL

    • NOTE: Red blood cell transfusions are not permitted within 14 days of hemoglobin assessment unless cytopenia is secondary to disease involvement
  • Total ≤ 2 X (ULN) (unless has Gilbert's disease or compensated hemolysis directly attributable to CLL)
  • (AST) ≤ 2.5 x ULN
  • Alanine aminotransferase (ALT) ≤ 2.5 x ULN
  • of ≥ 30 mL/min/ per 24-hour urine test or the Cockcroft-Gault formula
  • Fridericia's interval (QTcB) ≤ 480 ms

    • Note: To be performed within 28 days prior to Day 1 of protocol therapy
  • Seronegative for virus (HCV), active virus (HBV) (Surface antigen negative) OR

    • If seropositive for HCV or HBV, nucleic acid quantitation must be performed. Viral load must be undetectable
  • Meets other institutional and federal requirements for infectious disease titer requirements

    • Note: Infectious disease testing to be performed within 28 days prior to Day 1 of protocol therapy
  • Women of (WOCBP): negative urine or serum pregnancy test

    • If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required
  • Agreement by females and males of childbearing potential* to use an effective method of or abstain from heterosexual activity for the course of the study through at least 1 week after the last dose of protocol therapy

    • Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for > 1 year (women only)

Exclusion criteria

Exclusion Criteria:

  • Chronic use of in excess of 20 mg/day prednisone
  • Major surgery (under general anesthesia) ≤4 weeks of the first dose of study drug
  • Prior chemotherapy
  • to prior BTK or BCL2 inhibitor (defined as relapsed within/\< 6 months after completion of initial fixed duration regimen)
  • Vaccination with a within 35 days prior to the first dose of study drug or at any time during planned study treatment
  • Requires ongoing treatment with a strong inducer
  • Requires ongoing treatment with inhibitors of P-gp and BCRP
  • Requires ongoing treatment with warfarin or warfarin derivatives
  • Concurrent participation in another therapeutic clinical trial
  • Use of the following substances prior to the first dose of study drug:

    • ≤ 14 days or 5 half-lives (whichever is shorter) before the first dose of study drug: strong and moderate inhibitors or inducers of CYP3A
    • ≤ 7 days before the first dose of study drug: corticosteroid (> 20 mg prednisone or equivalent) given with antineoplastic intent
  • Known current central nervous system involvement by lymphoma/leukemia
  • Known Richter's transformation
  • Any uncontrolled or cardiovascular disease including the following:

    • Myocardial infarction (MI) within 6 months before screening
    • (NYHA) (New York Heart Association) heart failure class III-IV
    • Unstable angina within 3 months before screening
    • History of clinically significant arrhythmias (eg, sustained ventricular tachycardia, ventricular fibrillation, torsades de pointes).
    • History of Mobitz II second-degree or third-degree heart block without a permanent pacemaker in place
  • Prior except:

    • Malignancy treated with curative intent and no known active disease present for ≥ 2 years prior to initiation of therapy on current study
    • Adequately treated non-melanoma skin cancer or lentigo maligna (melanoma in situ) without evidence of disease
    • Adequately treated in situ carcinomas (e.g., cervical, esophageal, etc.) without evidence of disease
    • Asymptomatic prostate cancer managed with "watch and wait" strategy
  • Uncontrolled immune hemolysis or thrombocytopenia
  • Significant bleeding disorder (stable therapeutic anticoagulation acceptable)
  • History of stroke or intracranial hemorrhage within 6 months before first dose of study drug
  • Severe or debilitating pulmonary disease
  • Unable to swallow capsules or disease significantly affecting gastrointestinal function such as malabsorption syndrome, resection of the stomach or small bowel, bariatric surgery procedures, symptomatic inflammatory bowel disease, or partial or complete bowel obstruction
  • Active fungal, bacterial and/or viral infection requiring systemic therapy
  • Underlying medical conditions that, in the investigator's opinion, will render the administration of study drugs hazardous or obscure the interpretation of toxicity or adverse events (AEs)
  • Known active infection with
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to the study agents
  • Uncontrolled anemia and/or autoimmune thrombocytopenia (e.g., idiopathic thrombocytopenia purpura)
  • Any condition which in the discretion of the investigator would compromise the ability to comply with study procedures
  • Females only: Pregnant or breastfeeding
  • Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)
Terms in these criteria, in plain language(24)

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.

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.

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.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

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.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

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.

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.

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).

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.

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.

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.

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.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

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.

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.

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.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

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.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

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.

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.

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.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
44 participants (estimated)

Study arms

  • Experimental
    Treatment (zanubrutinib and sonrotoclax)

    CYCLE 1-4: Patients receive zanubrutinib PO QD on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. CYCLE 5+: Patients receive zanubrutinib PO QD and sonrotoclax PO QD on days 1-28 of each cycle. Cycles repeat every 28 days for up to 24 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy and aspiration, CT scan/MRI and blood sample collection throughout the study. Patients may undergo lymph node biopsy during screening and optionally at time of progression.

    Procedure: Biospecimen Collection · Procedure: Bone Marrow Aspiration · Procedure: Bone Marrow Biopsy · Procedure: Computed Tomography · Procedure: Lymph Node Biopsy · Procedure: Magnetic Resonance Imaging · Drug: Sonrotoclax · Drug: Zanubrutinib

Interventions

  • ProcedureBiospecimen Collection

    Undergo blood sample collection

    Also known as: Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection

  • ProcedureBone Marrow Aspiration

    Undergo bone marrow aspiration

  • ProcedureBone Marrow Biopsy

    Undergo bone marrow biopsy

    Also known as: Biopsy of Bone Marrow, Biopsy, Bone Marrow

  • ProcedureComputed Tomography

    Undergo CT scan

    Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography

  • ProcedureLymph Node Biopsy

    Undergo lymph node biopsy

    Also known as: Biopsy of Lymph Node

  • ProcedureMagnetic Resonance Imaging

    Undergo MRI

    Also known as: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan, Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance, MR, MR Imaging, MRI, MRI Scan, MRIs, NMR Imaging, NMRI, Nuclear Magnetic Resonance Imaging, sMRI, Structural MRI

  • Given PO

    Also known as: B-cell Lymphoma-2 Inhibitor BGB-11417, Bcl-2 Inhibitor BGB-11417, Beqalzi, BGB 11417, BGB-11417, BGB11417

  • Given PO

    Also known as: BGB 3111, BGB-3111, BGB3111, Brukinsa, BTK-InhB

06

What researchers measure

Primary outcomes

  1. Overall response rate

    Overall response defined as achieving best response of complete response (CR) or partial response (PR) after the start of protocol therapy and prior to disease progression and/or start of other anti-lymphoma therapy. Overall response rate will be calculated as the proportion of response-evaluable participants achieving an overall response. Will be estimated as a binary proportion; the 95% Clopper-Pearson confidence interval will be calculated when needed.

    Time frame: Up to 5 years

Secondary outcomes

  1. Complete response rate

    Complete response defined as achieving best response of CR after the start of protocol therapy and prior to disease progression and/or start of other anti-lymphoma therapy. Complete response rate will be calculated as the proportion of response-evaluable participants achieving CR. Will be estimated as a binary proportion; the 95% Clopper-Pearson confidence interval will be calculated when needed.

    Time frame: Up to 5 years

  2. Minimal residual disease (MRD) negativity

    MRD negativity is defined as less than 10\^-4. MRD will be assessed in the blood by flow cytometry.

    Time frame: Up to 5 years

  3. Progression free survival

    Will be estimated using the product-limit method of Kaplan and Meier along with the Greenwood estimator of standard error; 95% confidence interval will be constructed based on log-log transformation.

    Time frame: From start of protocol treatment to time of disease relapse/progression or death due to any cause, up to 5 years

  4. Duration of response

    Will be estimated using the product-limit method of Kaplan and Meier along with the Greenwood estimator of standard error; 95% confidence interval will be constructed based on log-log transformation.

    Time frame: From first achievement of CR or PR to time of disease relapse/progression or death due to any cause, up to 5 years

  5. Overall survival

    Will be estimated using the product-limit method of Kaplan and Meier along with the Greenwood estimator of standard error; 95% confidence interval will be constructed based on log-log transformation.

    Time frame: From start of protocol treatment to time of death, up to 5 years

  6. Incidence of adverse events

    Assessed by Common Terminology Criteira for Adverse Events version 5.0.

    Time frame: Up to 5 years

07

Study locations

3 sites
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Aug 2027; primary completion for Aug 2028, 12 months later.

Of 208 non-industry phase 2 interventional studies under Leukemia, Lymphocytic, Chronic, B-Cell, half reached primary completion within 75 months of starting (the median), counting those still running; a quarter within 42 and three quarters within 119. This study's planned 12 months is below that.

Counting every sponsor, half of 249 studies reached it within 73 months; a quarter within 41 and three quarters within 114.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 4, 2026
First posted
Sep 10, 2026
StartEst.
Aug 4, 2027
Primary completionEst.
Aug 13, 2028
CompletionEst.
Aug 13, 2028
Last update
Sep 10, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07812246
Responsible party
Sponsor
First posted
Sep 10, 2026
Start date
Aug 4, 2027 (estimated)
Primary completion
Aug 13, 2028 (estimated)
Completion
Aug 13, 2028 (estimated)
Last update
Sep 10, 2026

Study contacts

Tanya Siddiqi
principal investigator · City of Hope Medical Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Studies of the drugs tested here: Sonrotoclax · Zanubrutinib

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