Chronic Lymphocytic LeukemiaPhase 3NCT05624554
A Study of Nemtabrutinib vs Chemoimmunotherapy for Participants With Previously Untreated Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) Without TP53 Aberrations (MK-1026-008, BELLWAVE-008)
A Phase 3 study testing Nemtabrutinib, Fludarabine and Cyclophosphamide in people with Chronic Lymphocytic Leukemia and Small Lymphocytic Lymphoma, run by Merck Sharp & Dohme LLC at 97 sites in 21 countries.
Trial summary
Researchers are looking for new ways to treat people with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL). CLL and SLL are types of blood cancer. Researchers want to know if people who take nemtabrutinib compared to those who take the standard treatments in this study will live longer without… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma
- What is being tested?
- Nemtabrutinib, Fludarabine and Cyclophosphamide
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 300 participants
- Where
- 97 sitesin 21 countries
- Study dates
- 16 Mar 2023to 17 Mar 2031
- Phase
- Phase 3
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Confirmed diagnosis of chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL) and active disease clearly documented to have a need to initiate therapy
- Has previously untreated CLL/SLL participants without tumor protein 53 (TP53) aberrations and documented 11q status and immunoglobulin heavy chain gene (IGHV) mutational status
- The ability to swallow and retain oral medication
Who cannot join
- Has active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection
- Has gastrointestinal dysfunction that may affect drug absorption (eg, gastric bypass surgery, gastrectomy)
- Has known additional malignancy that is progressing or has required active treatment within the past 3 years, except basal cell carcinoma of skin, squamous cell carcinoma of skin, or carcinoma in situ (eg, breast carcinoma, cervical cancer in situ) that have undergone potential curative therapy
- Has history of severe bleeding disorders
- Has not adequately recovered from major surgery or has ongoing surgical complications
Trial locations and contacts
97 sites in 21 countries.
97 sites in 21 countries
China23 sites
Peking University Third Hospital ( Site 1602)
Beijing, Beijing Municipality, 100191
The First Hospital of Jilin University-Hematology ( Site 1621)
Changchun, Jilin, 130021
Xiangya Hospital Central South University-Hematology department ( Site 1616)
Changsha, Hunan, 410008
Hunan Cancer Hospital ( Site 1615)
Changsha, Hunan, 410013
Chongqing University Cancer Hospital ( Site 1605)
Chongqing, Chongqing Municipality, 400030
Chongqing University Three Gorges Hospital ( Site 1609)
Chongqing, Chongqing Municipality, 404000
Southern Medical University Nanfang Hospital-Department of Hematopathology ( Site 1607)
Guangzhou, Guangdong, 510515
Sun Yat-sen University Cancer Center ( Site 1608)
Guangzhou, Guangdong, 510700
The Affiliated Hospital of Guizhou Medical University ( Site 1625)
Guiyang, Guizhou, 550004
Hainan General Hospital ( Site 1603)
Haikou, Hainan, 570311
The First Affiliated Hospital, Zhejiang University-Hematology ( Site 1611)
Hangzhou, Zhejiang, 310003
The First Affiliated Hospital of Nanchang University ( Site 1614)
Nanchang, Jiangxi, 330006
Jiangxi Provincial Cancer Hospital ( Site 1628)
Nanchang, Jiangxi, 330029
Fudan University Shanghai Cancer Center ( Site 1606)
Shanghai, Shanghai Municipality, 200032
The First Affiliated Hospital of Soochow University-hematology department ( Site 1612)
Suzhou, Jiangsu, 215006
Shanxi Cancer Hospital ( Site 1629)
Taiyuan, Shanxi, 030000
Institute of hematology&blood disease hospital ( Site 1600)
Tianjin, Tianjin Municipality, 300020
Tianjin Medical University Cancer Institute & Hospital-lymphoma ( Site 1604)
Tianjin, Tianjin Municipality, 300060
Tongji Hospital Tongji Medical,Science & Technology ( Site 1619)
Wuhan, Hubei, 430000
Union Hospital Tongji Medical College Huazhong University of Science and Technology ( Site 1618)
Wuhan, Hubei, 430022
The First Affiliated Hospital of Xi'an Jiaotong University ( Site 1617)
Xi'an, Shaanxi, 710061
Shaanxi provincial people's hospital ( Site 1626)
Xi'an, Shaanxi, 710068
Henan Cancer Hospital-hematology department ( Site 1613)
Zhengzhou, Henan, 450008
Brazil6 sites
Hospital Erasto Gaertner-CEPEP - Pesquisa Clínica ( Site 1317)
Curitiba, Paraná, 81520-060
Hospital Amaral Carvalho-Centro de Pesquisas ( Site 1304)
Jaú, São Paulo, 17210-120
Instituto Nacional de Câncer - INCA-Divisão de Pesquisa Clínica e Desenvolvimento Tecnológico HC1 ( Site 1319)
Rio de Janeiro, 20231-050
A. C. Camargo Cancer Center ( Site 1318)
São Paulo, São Paulo, 01525-001
ICESP - INSTITUTO DO CÂNCER DO ESTADO DE SÃO PAULO-Pesquisa Clinica ( Site 1308)
São Paulo, 01246-000
Hospital Paulistano-Americas Oncologia ( Site 1302)
São Paulo, 01321-001
Chile6 sites
Biocenter ( Site 1507)
Concepción, Biobio, 4070196
IC La Serena Research ( Site 1506)
La Serena, Coquimbo Region, 1720430
Centro de Estudios Clínicos SAGA-CECSAGA ( Site 1509)
Santiago, Region M. de Santiago, 7500653
FALP-UIDO ( Site 1500)
Santiago, Region M. de Santiago, 7500921
Clínica Inmunocel ( Site 1511)
Santiago, Region M. de Santiago, 7580206
James Lind Centro de Investigacion del Cancer ( Site 1503)
Temuco, Araucania, 4800827
Poland6 sites
Uniwersyteckie Centrum Kliniczne-Klinika Hematologii i Transplantologii ( Site 3702)
Gdansk, Pomeranian Voivodeship, 80-952
Pratia Onkologia Katowice ( Site 3705)
Katowice, Silesian Voivodeship, 40-519
Swietokrzyskie Centrum Onkologii, Samodzielny Publiczny Zakl-Klinika Hematologii i Transplantacji S ( Site 3711)
Kielce, Świętokrzyskie Voivodeship, 25-734
Uniwersytecki Szpital Kliniczny nr 1 w Lublinie ( Site 3710)
Lublin, Lublin Voivodeship, 20-081
Samodzielny Publiczny Zaklad Opieki Zdrowotnej MSWiA z Warmi-Oddzial Kliniczny Hematologii ( Site 3704)
Olsztyn, Warmian-Masurian Voivodeship, 10-228
Narodowy Instytut Onkologii im. Marii Sklodowskiej-Curie - P-Klinika Nowotworów Układu Chłonnego ( Site 3701)
Warsaw, Masovian Voivodeship, 02-781
Ukraine6 sites
MNPE ClinCenter of Oncology,Hematology,Transplantology and Palliative Care of CherkasyRegCouncil ( Site 5106)
Cherkassy, Cherkasy Oblast, 18009
Communal non-profit enterprise "Regional clinical hospital o-Hematology Department ( Site 5113)
Ivano-Frankivsk, Ivano-Frankivsk Oblast, 76008
Nonprofit Organization National Cancer Institute ( Site 5103)
Kyiv, Kyivska Oblast, 03022
SI National Research Center of Radiation Medicine, Hematology, Oncology ( Site 5101)
Kyiv, 03115
Public Non-Profit Enterprise Kyiv City Clinical Hospital #9 -Hematology department #1 ( Site 5111)
Kyiv, 04112
Institute of Blood Pathology and Transfusion Medicine of National Aсademy of Medical Sciences of Ukr ( Site 5105)
Lviv, Lviv Oblast, 79057
Bulgaria5 sites
University Multiprofile Hospital for Active Treatment "Sveti Georgi" EAD ( Site 6404)
Plovdiv, 4002
Medical Centre Pratia Clinic EOOD ( Site 6406)
Plovdiv, 4003
Specialized Hospital for Active Treatment of Haematology Diseases ( Site 6403)
Sofia, Sofia (stolitsa), 1797
UMHAT "Prof. Dr. Stoyan Kirkovich"AD-Clinical Hematology ( Site 6400)
Stara Zagora, 6003
Multriprofile Hospital for Active Treatment "Hristo Botev" ( Site 6402)
Vratsa, 3000
South Africa5 sites
Groote Schuur Hospital-Clinical Haematology ( Site 4400)
Cape Town, Western Cape, 7925
Netcare Pretoria East Hospital-Albert Alberts Stem Cell Transplant Centre ( Site 4401)
Centurion, Gauteng, 0181
Wits Clinical Research ( Site 4403)
Johannesburg, Gauteng, 1864
Haemalife ( Site 4407)
Kuilsriver, Western Cape, 7580
Constantiaberg Haematology ( Site 4408)
Plumstead, Western Cape, 7800
Turkey (Türkiye)5 sites
Ankara Universitesi Tip Fakultesi Hastanesi-hematology ( Site 4913)
Ankara, 06100
TC Saglik Bakanligi Goztepe Prof. Dr. Suleyman Yalcin Sehir Hastanesi ( Site 4906)
Istanbul, 34722
Ege Universitesi Hastanesi ( Site 4902)
Izmir, 35100
Mega Medipol-Hematology ( Site 4904)
Stanbul, Istanbul, 34214
Namik Kemal University Medical Faculty-Hematology ( Site 4912)
Suleymanpasa, Tekirdas, 59100
United States4 sites
Clermont Oncology Center ( Site 5224)
Clermont, Florida, 34711
Hattiesburg Clinic Hematology/Oncology ( Site 5216)
Hattiesburg, Mississippi, 39401
Medical Oncology Associates, PS ( Site 5206)
Spokane, Washington, 99208
Highlands Oncology Group ( Site 5205)
Springdale, Arkansas, 72762
Colombia4 sites
Clini Salud ( Site 1700)
Envigado, Antioquia, 055422
Fundacion Colombiana de Cancerología Clinica Vida ( Site 1707)
Medellín, Antioquia, 050030
Oncologos del Occidente ( Site 1706)
Pereira, Risaralda Department, 660001
Sociedad De Oncologia Y Hematologia Del Cesar-Oncology ( Site 1704)
Valledupar, Cesar Department, 200001
Denmark4 sites
Aalborg Universitetshospital, Syd ( Site 1901)
Aalborg, North Denmark, 9000
Aarhus Universitetshospital, Skejby-Blodsygdomme ( Site 1902)
Aarhus, Central Jutland, 8200
Odense Universitetshospital ( Site 1900)
Odense C, Region Syddanmark, 5000
Vejle Sygehus ( Site 1903)
Vejle, Region Syddanmark, 7100
Mexico4 sites
Centro de Infusion Superare ( Site 3314)
Mexico City, Mexico City, 03100
Health Pharma Professional Research S.A. de C.V: ( Site 3301)
Mexico City, Mexico City, 03100
Centro de Investigacion Clinica Chapultepec ( Site 3309)
Morelia, Michoacán, 58260
Oaxaca Site Management Organization ( Site 3313)
Oaxaca City, 68000
Guatemala3 sites
MEDI-K ( Site 2401)
Guatemala City, 01009
CELAN,S.A ( Site 2403)
Guatemala City, 01010
Oncomedica ( Site 2402)
Guatemala City, 01010
Hungary3 sites
Heves Vármegyei Markhot Ferenc Oktatókórház és Rendelőintézet ( Site 2608)
Eger, Heves County, 3300
Szabolcs-Szatmár-Bereg Megyei Kórházak és Egyetemi Oktatókór-Haematológia osztály ( Site 2602)
Nyíregyháza, Szabolcs-Szatmár-Bereg, 4400
Fejér Megyei Szent György Egyetemi Oktató Kórház ( Site 2609)
Székesfehérvár, Fejér, 8000
Romania3 sites
Spitalul Clinic Colțea ( Site 4000)
Bucharest, Bucharest, 030171
Spitalul Clinic Colțea ( Site 4001)
Bucharest, Bucharest, 030171
Institutul Oncologic Cluj ( Site 4002)
Cluj-Napoca, 400015
Taiwan3 sites
Chang Gung Memorial Hospital at Kaohsiung-Division of Hematology and Oncology ( Site 4700)
Kaohsiung City, 83301
National Cheng Kung University Hospital ( Site 4701)
Tainan, 704
National Taiwan University Hospital ( Site 4704)
Taipei, 10002
Malaysia2 sites
Hospital Ampang ( Site 3202)
Ampang, Selangor, 68000
Hospital Sultanah Aminah ( Site 3203)
Johor Bahru, Johor, 80100
Singapore2 sites
National Cancer Centre Singapore ( Site 4200)
Singapore, Central Singapore, 168583
Tan Tock Seng Hospital ( Site 4202)
Singapore, Central Singapore, 308433
Australia1 site
Royal Adelaide Hospital ( Site 1105)
Adelaide, South Australia, 5000
Lithuania1 site
Hospital of Lithuanian University of Health Sciences Kauno klinikos-Oncology and Hematology ( Site 3100)
Kaunas, Kaunas County, 50161
About this study
Official title: A Phase 3, Randomized Study to Compare the Efficacy and Safety of Nemtabrutinib Versus Chemoimmunotherapy for Previously Untreated Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma Without TP53 Aberrations
Researchers are looking for new ways to treat people with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL). CLL and SLL are types of blood cancer. Researchers want to know if people who take nemtabrutinib compared to those who take the standard treatments in this study will live longer without their cancer growing, spreading or returning (progression free survival).
- Being tested
- Nemtabrutinib, Fludarabine, Cyclophosphamide, Bendamustine, Rituximab
- Medical subject headings
- Leukemia, Lymphocytic, Chronic, B-Cell
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
NemtabrutinibDrug
Also called MK-1026, ARQ 531
65 mg administered orally daily until disease progression, unacceptable toxicity, or discontinuation criteria met.
FludarabineDrug
25 mg/m^2 administered via intravenous (IV) infusion on Days 1, 2, and 3 of each 28-day cycle up to 6 cycles.
CyclophosphamideDrug
250 mg/m^2 administered via IV infusion on Days 1, 2, and 3 of each 28-day cycle up to 6 cycles.
BendamustineDrug
Administered via IV infusion on Days 1 and 2 of each 28-day cycle up to 6 cycles. The first dose is given as 70 to 90 mg/m^2. Subsequent doses may be escalated up to 90 mg/m^2, if applicable and as per local guidelines.
RituximabBiological
Also called RITUXAN®/MabThera
Administered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles.
TruximaBiological
Also called Rituximab biosimilar
Administered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles.
RuxienceBiological
Also called Rituximab biosimilar
Administered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles.
RiabniBiological
Also called Rituximab biosimilar
Administered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles.
| Study group | Role | What they receive |
|---|---|---|
| Nemtabrutinib | Experimental | Administered daily via oral tablet. Receives: Drug: Nemtabrutinib |
| FCR or BR | Active comparator | Investigator's choice of fludarabine plus cyclophosphamide plus rituximab (FCR) OR bendamustine plus rituximab (BR). Participants will receive either rituximab or specified approved rituximab biosimilar. Receives: Drug: Fludarabine; Drug: Cyclophosphamide; Drug: Bendamustine; Biological: Rituximab; Biological: Truxima; Biological: Ruxience; Biological: Riabni |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression-Free Survival (PFS) per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) Criteria 2018 as Assessed by Blinded Independent Central Review (BICR)
PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. PD is evaluated per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria 2018 as assessed by blinded independent central review (BICR).
Measured: Up to approximately 49 months
Secondary outcomes (6)
Overall Survival (OS)
OS is defined as the time from randomization to death due to any cause.
Measured: Up to approximately 94 months
Objective Response Rate (ORR) per iwCLL Criteria 2018 as Assessed by BICR
ORR is defined as the percentage of participants with complete response (CR), complete response with an incomplete recovery of the participant's bone marrow (CRi), nodular partial response (nPR), or Partial response (PR), per iwCLL criteria 2018 as assessed by BICR.
Measured: Up to approximately 36 months
Time to Next Therapy (TTNT)
TTNT is defined as the time from randomization to initiation of the first dose of a new systemic anticancer therapy for chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL) or death due to any cause, whichever occurs first.
Measured: Up to approximately 94 months
Duration of Response (DOR) per iwCLL Criteria 2018 as Assessed by BICR
For participants who demonstrate a CR, CRi, nPR, or PR per iwCLL criteria as assessed by BICR, DOR is defined as the time from the first documented evidence of CR, CRi, nPR, or PR that led to response until disease progression or death due to any cause, whichever occurs first.
Measured: Up to approximately 94 months
Number of Participants Who Experience an Adverse Event (AE)
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention.
Measured: Up to approximately 94 months
Number of Participants Who Discontinue Study Treatment Due to an AE
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention.
Measured: Up to approximately 94 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Nov 2022
- Study start16 Mar 2023
- Primary completion19 May 2027 (estimated)
- Study completion17 Mar 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Chronic Lymphocytic LeukemiaStudies of the same condition, open and under way.
- More trials run by Merck Sharp & Dohme LLCThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Merck Sharp & Dohme LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Merck Sharp & Dohme LLC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05624554
- Sponsor's protocol ID
- 1026-008
- Other IDs
- 2022-501481-21-00, MK-1026-008, U1111-1274-2574, 2021-006593-23
- Status last verified
- Mar 2026
- First submitted
- 14 Nov 2022
- Last updated
- 16 Mar 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf
Publications
Davids MS. BRUIN 313 and 314 Trials Open the Door for Noncovalent Bruton Tyrosine Kinase Inhibition as Initial Therapy for Chronic Lymphocytic Leukemia. J Clin Oncol. 2026 Feb 20;44(6):435-439. doi: 10.1200/JCO-25-02691. Epub 2025 Dec 9.
PubMed 41363770
Study at a glance
From the registry record, last updated by the sponsor on 16 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 3, Randomized Study to Compare the Efficacy and Safety of Nemtabrutinib Versus Chemoimmunotherapy for Previously Untreated Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma Without TP53 Aberrations
- ClinicalTrials.gov ID
- NCT05624554
- Acronym / sponsor ID
- 1026-008
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
- Study start
- 16 Mar 2023 (actual)
- Primary completion
- 19 May 2027 (estimated)
- Study completion
- 17 Mar 2031 (estimated)
- First posted
- 22 Nov 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Researchers are looking for new ways to treat people with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL). CLL and SLL are types of blood cancer. Researchers want to know if people who take nemtabrutinib compared to those who take the standard treatments in this study will live longer without their cancer growing, spreading or returning (progression free survival).
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Nemtabrutinib | Experimental | Drug: NemtabrutinibAdministered daily via oral tablet. |
| FCR or BR | Active comparator | Drug: Fludarabine, Drug: Cyclophosphamide, Drug: Bendamustine, Biological: Rituximab, Biological: Truxima, Biological: Ruxience, Biological: RiabniInvestigator's choice of fludarabine plus cyclophosphamide plus rituximab (FCR) OR bendamustine plus rituximab (BR). Participants will receive either rituximab or specified approved rituximab biosimilar. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Confirmed diagnosis of chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL) and active disease clearly documented to have a need to initiate therapy
- Has previously untreated CLL/SLL participants without tumor protein 53 (TP53) aberrations and documented 11q status and immunoglobulin heavy chain gene (IGHV) mutational status
- The ability to swallow and retain oral medication
Key exclusion criteria (5 listed)
- Has active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection
- Has gastrointestinal dysfunction that may affect drug absorption (eg, gastric bypass surgery, gastrectomy)
- Has known additional malignancy that is progressing or has required active treatment within the past 3 years, except basal cell carcinoma of skin, squamous cell carcinoma of skin, or carcinoma in situ (eg, breast carcinoma, cervical cancer in situ) that have undergone potential curative therapy
- Has history of severe bleeding disorders
- Has not adequately recovered from major surgery or has ongoing surgical complications
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| NemtabrutinibAlso: MK-1026, ARQ 53165 mg administered orally daily until disease progression, unacceptable toxicity, or discontinuation criteria met. | Drug | Nemtabrutinib |
| Fludarabine25 mg/m^2 administered via intravenous (IV) infusion on Days 1, 2, and 3 of each 28-day cycle up to 6 cycles. | Drug | FCR or BR |
| Cyclophosphamide250 mg/m^2 administered via IV infusion on Days 1, 2, and 3 of each 28-day cycle up to 6 cycles. | Drug | FCR or BR |
| BendamustineAdministered via IV infusion on Days 1 and 2 of each 28-day cycle up to 6 cycles. The first dose is given as 70 to 90 mg/m^2. Subsequent doses may be escalated up to 90 mg/m^2, if applicable and as per local guidelines. | Drug | FCR or BR |
| RituximabAlso: RITUXAN®/MabTheraAdministered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles. | Biological | FCR or BR |
| TruximaAlso: Rituximab biosimilarAdministered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles. | Biological | FCR or BR |
| RuxienceAlso: Rituximab biosimilarAdministered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles. | Biological | FCR or BR |
| RiabniAlso: Rituximab biosimilarAdministered as an IV infusion on Day 1 of each 28-day cycle. The initial dose is 375 mg/m^2 (cycle 1) followed by 500 mg/m^2 for remaining cycles. | Biological | FCR or BR |
Primary outcome
Progression-Free Survival (PFS) per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) Criteria 2018 as Assessed by Blinded Independent Central Review (BICR)
Time frame: Up to approximately 49 months
PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. PD is evaluated per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria 2018 as assessed by blinded independent central review (BICR).
6 secondary outcomes
Overall Survival (OS)
Time frame: Up to approximately 94 months
Objective Response Rate (ORR) per iwCLL Criteria 2018 as Assessed by BICR
Time frame: Up to approximately 36 months
Time to Next Therapy (TTNT)
Time frame: Up to approximately 94 months
Duration of Response (DOR) per iwCLL Criteria 2018 as Assessed by BICR
Time frame: Up to approximately 94 months
Number of Participants Who Experience an Adverse Event (AE)
Time frame: Up to approximately 94 months
Number of Participants Who Discontinue Study Treatment Due to an AE
Time frame: Up to approximately 94 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Mar 2026.
- Derived from this study: PubMed 41363770Davids MS. BRUIN 313 and 314 Trials Open the Door for Noncovalent Bruton Tyrosine Kinase Inhibition as Initial Therapy for Chronic Lymphocytic Leukemia. J Clin Oncol. 2026 Feb 20;44(6):435-439. doi: 10.1200/JCO-25-02691. Epub 2025 Dec 9.
- Merck Clinical Trials InformationLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf
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Waldenstrom Macroglobulinemia, Lymphoplasmacytic Lymphoma
RecruitingPhase 3
A Study of Nemtabrutinib Plus Venetoclax vs Venetoclax + Rituximab (VR) in Second-line (2L) + Relapsed/Refractory (R/R) Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) (MK-1026-010/BELLWAVE-010).
Leukemia, Lymphocytic, Chronic, B-Cell, Leukemia, Chronic Lymphocytic
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Medical Director study director
Merck Sharp & Dohme LLC
97 sites in 21 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Nemtabrutinib, Fludarabine and Cyclophosphamide in people with Chronic Lymphocytic Leukemia and Small Lymphocytic Lymphoma, run by Merck Sharp & Dohme LLC at 97 sites in 21 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 16 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 97 sites in China, Brazil, Chile, Poland, Ukraine and 16 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Progression-Free Survival (PFS) per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) Criteria 2018 as Assessed by Blinded Independent Central Review (BICR) (time frame: Up to approximately 49 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05624554, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Mar 2026.