A Study to Compare the Efficacy and Safety of a Combined Regimen of Venetoclax and Obinutuzumab Versus Fludarabine, Cyclophosphamide, and Rituximab (FCR)/ Bendamustine And Rituximab (BR) in FIT Patients With Previously Untreated Chronic Lymphocytic Leukemia (CLL) Without DEL (17P) or TP53 Mutation
CRISTALLO
A Prospective, Open-Label, Multicenter Randomized Phase III Study to Compare The Efficacy and Safety of A Combined Regimen of Venetoclax and Obinutuzumab Versus Fludarabine, Cyclophosphamide, and Rituximab (FCR)/Bendamustine and Rituximab (BR) in FIT Patients With Previously Untreated Chronic Lymphocytic Leukemia (CLL) Without DEL(17P) or TP53 Mutation
3 other identifiers
interventional
166
5 countries
40
Brief Summary
This study will evaluate the efficacy and safety of venetoclax and obinutuzumab (VEN + G) compared with fludarabine + cyclophosphamide + rituximab or bendamustine + rituximab (FCR/BR) in FIT participants (FIT is defined by a cumulative illness rating scale \[CIRS\]/score of ≤6 and a normal creatinine clearance of ≥70 mL/min) with previously untreated CLL without DEL(17P) or TP53 mutation requiring treatment. Eligible participants will be randomly assigned in a 1:1 ratio to receive either VEN + G (Arm A) or FCR/BR (Arm B).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_3
Started May 2020
Longer than P75 for phase_3
40 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
February 25, 2020
CompletedFirst Posted
Study publicly available on registry
February 26, 2020
CompletedStudy Start
First participant enrolled
May 28, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 19, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
March 19, 2025
CompletedResults Posted
Study results publicly available
April 17, 2025
CompletedMarch 3, 2026
February 1, 2026
3.8 years
February 25, 2020
March 13, 2025
February 11, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Minimal Residual Disease (MRD) Response Rate Measured in Peripheral Blood (PB) Using Next Generation Sequencing (NGS)
MRD response rate was determined as the percentage of participants with MRD-negativity measured in the PB using NGS using a cutoff of \< 10\^-4. MRD was considered negative if the result was \< 1 CLL cell in 10,000 leukocytes. Percentages have been rounded off to the nearest decimal point.
At Month 15
Secondary Outcomes (21)
Progression-free Survival (PFS)
Up to approximately 56.4 months
MRD Response Rate in PB of FCR/BR Compared With VEN+G at the End of Treatment Response Visit
VEN+G: From Cycle 1 Day 1 up to 15 months; FCR/BR: From Cycle 1 Day 1 up to 9 months (1 cycle=28 days)
MRD Response Rate in Bone Marrow (BM) of FCR/BR Compared With VEN+G at the End of Treatment Response Visit
VEN+G: From Cycle 1 Day 1 up to 15 months; FCR/BR: From Cycle 1 Day 1 up to 9 months (1 cycle=28 days)
Objective Response Rate (ORR)
At Month 15
CR Rate
At Month 15
- +16 more secondary outcomes
Study Arms (2)
VEN + G
EXPERIMENTALParticipants will receive 12 cycles of treatment (each cycle is 28 days). Venetoclax (VEN) will be administered orally, daily, with a 5-week ramp-up period, starting on Cycle 1, Day 22 and administration will continue until the end of Cycle 12. Obinutuzumab (G) will be administered intravenously (IV) on Days 1 (and 2), 8, and 15 of Cycle 1 and on Day 1 of Cycles 2-6.
FCR/BR
ACTIVE COMPARATORParticipants will receive 6 cycles of Fludarabine + Cyclophosphamide + Rituximab (FCR) consisting of a single cycle of a single infusion of rituximab on Day 1 and fludarabine and cyclophosphamide infusions on Days 1-3 of each 28-day cycle or bendamustine (B) as infusions on Days 1 and 2 and a single cycle of rituximab on Day 1 of each 28-day cycle.
Interventions
Obinutuzumab 1000 milligrams (mg) will be administered IV on Days 1 (and 2), 8, and 15 of Cycle 1 and on Day 1 of Cycles 2-6.
Venetoclax 20 mg will be administered orally, once daily starting on Day 22 of Cycle 1 for 7 days, then ramp up from 50 to 400 mg/day during Cycle 2 and continue at 400 mg/day from Day 1 of Cycle 3 till end of Cycle 12.
Fludarabine will be administered in a dosage of 25 milligram per meter squared (mg/m\^2), IV, on days 1, 2, and 3 of Cycles 1-6.
Cyclophosphamide will be administered in a dosage of 250 mg/m\^2, IV, on Days 1, 2, and 3 Cycles 1-6.
Rituximab will be administered at a dose of 375 mg/m\^2, IV, on Cycle 1, Day 1 followed by 500 mg/m\^2 on Day 1 of Cycles 2-6.
Bendamustine will be administered at a dose of 90 mg/m\^2, IV, on 2 consecutive days of Cycles 1-6.
Eligibility Criteria
You may qualify if:
- Ability to comply with the study protocol, in the investigator's judgment
- Aged 18 years or older
- Have previously untreated documented Chronic Lymphocytic Leukemia (CLL) according to the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria
- CLL requiring treatment according to the iwCLL criteria
- Cumulative Illness Rating Scale (CIRS) score ≤ 6 and creatinine clearance (CrCl) ≥ 70 mL/min
- Hematology values within the following limits, unless cytopenia is caused by the underlying disease (i.e., no evidence of additional bone marrow (BM) dysfunction; e.g., myelodysplastic syndrome, hypoplastic BM):
- Absolute neutrophil count ≥ 1.0 x 109/L, unless there is BM involvement
- Platelet count ≥ 75 x 109/L and more than 7 days since last transfusion, or ≥ 30 x 109/L if there is BM involvement
- Adequate liver function as indicated by a total bilirubin, aspartate aminotransferase, and Alanine transaminase ≤ 2 times the institutional upper limit of normal (ULN) value, unless directly attributable to the participant's CLL
- Life expectancy \>6 months
- For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception and agreement to refrain from donating eggs
- For men: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods, and agreement to refrain from donating sperm
You may not qualify if:
- Transformation of CLL to aggressive Non-Hodgkin's Lymphoma (NHL)
- Participants with Small Lymphocyclic Lymphoma (SLL) only
- Known central nervous system involvement
- Participants with a history of confirmed progressive multifocal leukoencephalopathy (PML)
- Detected del(17p) or TP53 mutation (valid test within 6-months from screening is required for randomisation)
- An individual organ/system impairment score of 4 as assessed by the Cumulative Illness Rating Scale (CIRS) definition limiting the ability to receive the treatment regimen of this trial with the exception of eyes, ears, nose, throat organ system
- Participants with uncontrolled autoimmune hemolytic anemia or immune thrombocytopenia
- History of prior malignancy
- Participants with infections requiring IV treatment (Grade 3 or 4) within the last 8 weeks prior to enrollment
- Evidence of other clinically significant uncontrolled conditions including but not limited to active or uncontrolled systemic infection (e.g., viral, bacterial, or fungal)
- History of severe allergic or anaphylactic reactions to humanized or murine monoclonal antibodies or known sensitivity or allergy to murine products
- Hypersensitivity to fludarabine, bendamustine, cyclophosphamide, rituximab, obinutuzumab, or venetoclax or to any of the excipients (e.g., trehalose)
- Pregnant women and nursing mothers
- Vaccination with a live vaccine ≤ 28 days prior to randomization
- Prisoners or participants who are institutionalized by regulatory or court order or persons who are in dependence to the Sponsor or an investigator
- +15 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (40)
Medical Center of Aurora
Aurora, Colorado, 80012, United States
American Oncology Partners of Maryland, PA
Bethesda, Maryland, 20817, United States
University of Tennessee Medical Center;Office of Clinical Trials
Knoxville, Tennessee, 37920, United States
Oncology & Hematology Associates of Southwest Virginia, Inc._Goldschmidt
Roanoke, Virginia, 24014, United States
Canberra Hospital
Canberra, Australian Capital Territory, 2605, Australia
Liverpool Hospital
Liverpool, New South Wales, 2170, Australia
Port Macquarie - Mid North Coast Cancer Institute
Port Macquarie, New South Wales, 2444, Australia
Royal North Shore Hospital
St Leonards, New South Wales, 2065, Australia
Royal Hobart Hospital
Hobart, Tasmania, 7000, Australia
Monash Health;Haematology Research
Clayton, Victoria, 3168, Australia
Peter MacCallum Cancer Centre;Clinical Haematology
Melbourne, Victoria, 3050, Australia
Northern Hospital;Oncology and/or Hematology
Melbourne, Victoria, 3076, Australia
Hopital Haut Leveque Chu de Bordeaux
Pessac, Aquitaine, 33600, France
Centre Hospitalier Régional Universitaire de Tours - Hôpital Bretonneau;Hématologie et Thérapie Cellulaire
Tours, Indre-et-Loire, 37032, France
Centre Hospitalier de Pérpignan;hématologie
Perpignan, Languedoc-Roussillon, 66046, France
Hopital Claude Huriez - CHU de Lille;service maladies appareil digestif
Lille, Nord, 59037, France
Centre Hospitalier intercommunal de Toulon La Seyne sur Mer
Toulon, Provence-Alpes-Côte d'Azur Region, 83100, France
centre hospitalier lyon sud;Service Hématologie
Pierre-Bénite, Rhône, 69310, France
HENRI MONDOR HOSPITAL;Centre d'investigation clinique
Créteil, Val-de-Marne, 94000, France
Centre Hospitalier Universitaire de Caen Normandie
Caen, 14000, France
Clinique Victor Hugo- CCS du Mans
Le Mans, 72000, France
Centre Hospitalier Universitaire de Poitiers
Poitiers, 86021, France
Centre Hospitalier Universitaire de Reims - Hôpital Robert Debré;Hématologie Clinique
Reims, 51092, France
Instituto Tumori Giovanni Paolo II;ONCOLOGIA MEDICA
Bari, Apulia, 70124, Italy
Ospedale Vito Fazzi;U.O. Ematologia IV Piano Polo Oncologico
Lecce, Apulia, 73100, Italy
Azienda Ospedaliero Universitaria;Ematologia
Modena, Emilia-Romagna, 41125, Italy
Policlinico Umberto I
Rome, Lazio, 161, Italy
Fondazione Policlinico Universitario Agostino Gemelli
Rome, Lazio, 168, Italy
Ospedale San Martino;U.O. Clinica Ematologica
Genoa, Liguria, 16132, Italy
Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico;U.O.C Ematologia
Milan, Lombardy, 20122, Italy
ASST Grande Ospedale Metropolitano Niguarda;Ematologia
Milan, Lombardy, 20162, Italy
Azienda Ospedaliero Universitaria Maggiore della Carità;SCDU Ematologia
Novara, Piedmont, 28100, Italy
AO Santa Maria della Misericordia
Perugia, Umbria, 6132, Italy
Hospital Germans Trias i Pujol
Badalona, Barcelona, 8916, Spain
COMPLEJO HOSPITALARIO DE NAVARRA;Servicio de Hematología
Pamplona, Navarre, 31008, Spain
Hospital Universitari Vall d'Hebron;Hematology
Barcelona, 8035, Spain
Hospital Universitario La Paz;Hematología
Madrid, 28015, Spain
Hospital General Universitario Morales Meseguer;Hematologia y Oncologia médica
Murcia, 30008, Spain
Hospital Universitario Virgen del Rocío;Unidad Onco-Hematología Pediátrica
Seville, 41009, Spain
Hospital Universitario de Toledo
Toledo, 45007, Spain
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Medical Communications
- Organization
- Hoffmann-La Roche
Study Officials
- STUDY DIRECTOR
Clinical trial
Hoffmann-La Roche
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 25, 2020
First Posted
February 26, 2020
Study Start
May 28, 2020
Primary Completion
March 19, 2024
Study Completion
March 19, 2025
Last Updated
March 3, 2026
Results First Posted
April 17, 2025
Record last verified: 2026-02
Data Sharing
- IPD Sharing
- Will share
Qualified researchers may request access to individual patient level data through the request platform (www.vivli.org). Further details on Roche's criteria for eligible studies are available here (https://vivli.org/ourmember/roche/). For further details on Roche's Global Policy on the Sharing of Clinical Information and how to request access to related clinical study documents, see here (https://www.roche.com/innovation/process/clinical-trials/data-sharing).