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Ibrutinib as Early Therapy in Chronic Lymphocytic Leukemia (CLL)

Ibrutinib Monotherapy in Early Stage Chronic Lymphocytic Leukemia (CLL) Without IWCLL/NCI-WG 2008 Treatment Indications But With High-Risk Features for Disease Progression

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03207555
Enrollment
23
Registered
2017-07-02
Start date
2018-05-23
Completion date
2024-08-02
Last updated
2025-09-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Lymphocytic Leukemia, Malignant Neoplasms Stated as Primary Lymphoid Haematopoietic, Small Lymphocytic Leukemia

Keywords

Malignant neoplasms stated as primary lymphoid haematopoietic, Chronic Lymphocytic Leukemia, CLL, Small Lymphocytic Leukemia, SLL, Ibrutinib, PCI-32765, Imbruvica

Brief summary

The standard approach to managing chronic lymphocytic leukemia (CLL) and small lymphocytic leukemia (SLL) is to wait until you have symptoms before treatment is given. The goal of this clinical research study is to learn if providing earlier treatment for CLL or SLL with ibrutinib in patients who do not have symptoms will be more effective than waiting until symptoms develop. This is an investigational study. Ibrutinib is FDA approved and commercially available for the treatment of patients with CLL or SLL. It is considered investigational to give ibrutinib to CLL and SLL patients before symptoms develop. The study doctor can describe how the study drug is designed to work. Up to 50 participants will be enrolled in this study. All will take part at MD Anderson.

Detailed description

Study Drug Administration: If you are found to be eligible to take part in this study, you will take ibrutinib by mouth 1 time every day. Each dose should be taken with about 1 cup (8 ounces) of water. If you miss a dose of ibrutinib, it can be taken as soon as possible on the same day. You should take your next dose as scheduled. If you forget to take a dose, do not take extra capsules on the next day to make up the missed dose. You will be given standard drugs, such as allopurinol or valacyclovir, to help decrease the risk of side effects. You may ask the study staff for information about how the drugs are given and their risks. If you have side effects, your dose of ibrutinib may be lowered or temporarily stopped until you recover from the side effects. Length of Treatment: You may take ibrutinib for up to 2 years (24 cycles). If at the end of 2 years you are benefitting from ibrutinib and the study doctor thinks it is in your best interest to continue taking it, other treatment options will be discussed with you to allow you to continue to take ibrutinib. You will no longer be able to take the study drug if the disease gets worse, if intolerable side effects occur, or if you are unable to follow study directions. Study Visits: Each cycle is 28 days. On Day 28 of Cycles 1-3 and then every 3 cycles after that until Cycle 24 (Cycles 6, 9, 12, and so on): * Blood (about 2 tablespoons) will be drawn for routine tests. * You will have a physical exam. * You will have an EKG. On Day 28 of Cycles 1, 3, 6, 12, and 24, blood (about 3 tablespoons) will be drawn to test for genetic mutations related to the disease. At Months 3, 6, and 12, additional blood (about 8 teaspoons) will be drawn for immune system testing. On Day 28 of Cycles 6, 12, 18 and 24, you will have CT, MRI or PET/CT scan to check the status of the disease. Depending on the results of the CT, MRI or PET/CT scans, you may not need to have these scans repeated. The doctor will discuss this with you. On Day 28 of Cycles 6, 12 and 24, you will have a bone marrow biopsy to check the status of the disease. If the doctor thinks it is needed or if the disease gets worse, some tests/procedures, such as physical exams and blood draws for routine tests, may be repeated more often. Long-term follow-up: Every 3 months, during a regularly scheduled clinic visit (if you are still receiving care at MD Anderson) or by phone (if you are receiving care outside of MD Anderson), you will be asked how you are doing, if you are still taking ibrutinib, and if you have any side effects. If called, this call should last about 5-10 minutes.

Interventions

DRUGIbrutinib

420 mg by mouth once daily.

Sponsors

Pharmacyclics LLC.
CollaboratorINDUSTRY
M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Patients must be age \>/=18 years at the time of informed consent, understand and voluntarily sign an informed consent, and be able to comply with study procedures and follow-up examinations. 2. No treatment indication according to IWCLL/NCI-WG (International Working Group in Chronic Lymphocytic Leukemia/National Cancer Institute-Working Group) 2008 criteria 3. Estimated time to first treatment of 3 years or less according to MDACC nomogram 4. ECOG performance status of 0-2 5. Male and female subjects who agree to use both a highly effective method of birth control (eg, implants, injectables, combined oral contraceptives, some intrauterine devices \[IUDs\], complete abstinence , or sterilized partner) and a barrier method (eg., condoms, vaginal ring, sponge, etc) during the period of therapy and for 30 days after the last dose of study drug for females and 90 days for males. OR Female subjects who are of non-reproductive potential (ie, post-menopausal by history - no menses for \>/=1 year; OR history of hysterectomy; OR history of bilateral tubal ligation; OR history of bilateral oophorectomy) 6. Adequate hepatic and renal function as indicated by all of the following: Total bilirubin \</=1.5 x institutional Upper Limit of Normal (ULN) except for patients with bilirubin elevation due to Gilbert's disease or of non-hepatic origin who will be allowed to participate, provided bilirubin is \</=3 x institutional ULN; an ALT \</=2.5 x ULN; and estimated creatinine clearance (CrCl) of \> 30 mL/min, as calculated by the Cockcroft- Gault equation. 7. PT/INR \<1.5 x ULN and PTT (aPTT) \<1.5 x ULN (unless abnormalities are unrelated to coagulopathy or bleeding disorder). 8. Free of prior malignancies for 3 years with exception of patients diagnosed with basal cell or non-metastatic squamous cell carcinoma of the skin, or carcinoma in situ of the cervix or breast, who are eligible even if they are currently treated or were treated and/or diagnosed in the past 3 years prior to study enrolment 9. Diagnosis of CLL/SLL that meets IWCLL diagnostic criteria

Exclusion criteria

1. Receipt of any prior therapy for CLL. Patients who have received early intervention with INVAC-1 vaccine against hTERT will be eligible provided all of the following exist: i) They had no response to the vaccine treatment (persistent CLL \>1% in bone marrow). ii) ≥3 months have elapsed since the last dose of vaccine. iii) No residual toxicities attributable to the vaccine exist at the time of study enrollment. iv) The patient does not meet IWCLL criteria for requiring treatment. 2. Richter Transformation 3. Active malignancy requiring systemic therapy, other than CLL, with the exception of: adequately treated in situ carcinoma of the cervix uteri; adequately treated basal cell carcinoma or localized squamous cell carcinoma of the skin; previous malignancy confined and surgically resected (or treated with other modalities) with curative intent. 4. Systemic anticoagulation with warfarin or other Vitamin K antagonists 5. Active and uncontrolled autoimmune hemolytic anemia (AIHA) or autoimmune thrombocytopenia (ITP) requiring daily prednisone dose of \>/=20 mg 6. Current and concurrent use of strong CYP3A4 inhibitors or inducers 7. Pregnant or breast-feeding females 8. Uncontrolled and active systemic fungal, bacterial, viral, or other infection (defined as exhibiting ongoing signs/symptoms related to the infection and without improvement, despite appropriate antibiotics or other treatment) 9. Any other severe concurrent disease, or history of serious organ dysfunction or disease involving the heart, kidney, liver or other organ system that, in the investigator's opinion, may place the patient at undue risk to undergo therapy with ibrutinib 10. Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or Class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization 11. History of ischemic stroke within 6 months prior to enrollment 12. Evidence of bleeding diathesis or coagulopathy within 3 months (eg, von Willebrand's disease or hemophilia 13. Any history of symptomatic intracranial hemorrhage 14. Major surgical procedure with 4 weeks of first dose of study drug; open biopsy, or significant traumatic injury within 7 days prior to enrollment date; anticipation of need for major surgical procedure during the course of the study 15. Minor surgical procedures, fine needle aspirations or core biopsies within 3 days prior to enrollment date. Bone marrow aspiration and/or biopsy are allowed 16. Serious, non-healing wound, ulcer, or bone fracture 17. Vaccinated with live, attenuated vaccines within 4 weeks of first dose of study drug 18. Active, uncontrolled infection 19. Known history of human immunodeficiency virus (HIV) or active with hepatitis C virus (HCV) or hepatitis B virus (HBV). Subjects who are positive for hepatitis B core antibody, hepatitis B surface antigen, or hepatitis C antibody must have a negative polymerase chain reaction (PCR) result before enrollment. Those who are PCR positive will be excluded 20. Currently active, clinically significant hepatic impairment Child-Pugh class B or C according to the Child Pugh classification (see Appendix L)

Design outcomes

Primary

MeasureTime frameDescription
Participants With Complete Remission (CR) at 24 MonthsUp to 24 monthsComplete Remission (CR): Peripheral blood lymphocytes below 4 x 10\^9/L (4000/ƒÝL), Absence of significant lymphadenopathy (lymph nodes \>1.5 cm in diameter) by CT(or PET) examination of neck, thorax, abdomen and pelvis, No hepatomegaly or splenomegaly by physical examination (and CT/PET if assessment was abnormal before therapy or if physical exam is inconclusive), Absence of constitutional symptoms, Neutrophils more than 1.5 x 10\^9/L (1500/ƒÝL) without need for exogenous growth factors, Platelets more than 100 x 10\^9/L (100 000/ƒÝL) without need for exogenous growth factors, Hemoglobin more than 110 g/L (11.0 g/dL) without red blood cell transfusion or need for exogenous erythropoietin, Bone Marrow aspirate and biopsy, demonstrating at least normocellular for age, with less than 30% of nucleated cells being lymphocytes. Lymphoid nodules should be absent. If the bone marrow is hypocellular, a repeat determination should be made in 4 weeks or when peripheral blood counts have recovered.
Participants With Partial Remission (PR) at 24 MonthsUp to 24 monthsPartial Remission (PR) at least one of criteria 1-3, and one or more of the features listed in number 4. 1. A decrease lymphocytes by 50% or more from the value before therapy. 2. Reduction in lymphadenopathy, defined by the following: - A decrease in lymph node size by 50% or more either in the sum products of up to 6 lymph nodes, or in the largest diameter of the enlarged lymph node(s) detected prior to therapy. - No increase in lymph node, and no new enlarged lymph node. In small lymph nodes (\</=2 cm), an increase of less than 25% is not considered to be significant. 3. A reduction in enlargement of the spleen or liver by 50% or more. 4. The blood count should show one or more of the following results: - Neutrophils more than 1, without need for exogenous growth factors. - Platelet counts greater than 100 x10\^9/L (100 000/ƒÝL) or 50% improvement over baseline without need for exogenous growth factors. - Hemoglobin greater than 11

Secondary

MeasureTime frameDescription
Progression-Free Survival (PFS) at 24 Months24 monthsTime from date of treatment start until the date of progression or death from leukemia.
Overall Response at 24 MonthsUp to 24 monthsOverall Response is participants who achieve Complete Remission (CR) or Partial Remission (PR) at 24 months of treatment.

Countries

United States

Participant flow

Participants by arm

ArmCount
Ibrutinib
Participants take Ibrutinib by mouth 1 time every day for up to 2 years (24 cycles). Ibrutinib: 420 mg by mouth once daily.
23
Total23

Baseline characteristics

CharacteristicIbrutinib
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
8 Participants
Age, Categorical
Between 18 and 65 years
15 Participants
Age, Continuous60 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
23 Participants
Region of Enrollment
United States
23 participants
Sex: Female, Male
Female
11 Participants
Sex: Female, Male
Male
12 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 23
other
Total, other adverse events
23 / 23
serious
Total, serious adverse events
6 / 23

Outcome results

Primary

Participants With Complete Remission (CR) at 24 Months

Complete Remission (CR): Peripheral blood lymphocytes below 4 x 10\^9/L (4000/ƒÝL), Absence of significant lymphadenopathy (lymph nodes \>1.5 cm in diameter) by CT(or PET) examination of neck, thorax, abdomen and pelvis, No hepatomegaly or splenomegaly by physical examination (and CT/PET if assessment was abnormal before therapy or if physical exam is inconclusive), Absence of constitutional symptoms, Neutrophils more than 1.5 x 10\^9/L (1500/ƒÝL) without need for exogenous growth factors, Platelets more than 100 x 10\^9/L (100 000/ƒÝL) without need for exogenous growth factors, Hemoglobin more than 110 g/L (11.0 g/dL) without red blood cell transfusion or need for exogenous erythropoietin, Bone Marrow aspirate and biopsy, demonstrating at least normocellular for age, with less than 30% of nucleated cells being lymphocytes. Lymphoid nodules should be absent. If the bone marrow is hypocellular, a repeat determination should be made in 4 weeks or when peripheral blood counts have recovered.

Time frame: Up to 24 months

Population: Of the 23 participants registered on-study, 18 participants were evaluable.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
IbrutinibParticipants With Complete Remission (CR) at 24 Months3 Participants
Primary

Participants With Partial Remission (PR) at 24 Months

Partial Remission (PR) at least one of criteria 1-3, and one or more of the features listed in number 4. 1. A decrease lymphocytes by 50% or more from the value before therapy. 2. Reduction in lymphadenopathy, defined by the following: - A decrease in lymph node size by 50% or more either in the sum products of up to 6 lymph nodes, or in the largest diameter of the enlarged lymph node(s) detected prior to therapy. - No increase in lymph node, and no new enlarged lymph node. In small lymph nodes (\</=2 cm), an increase of less than 25% is not considered to be significant. 3. A reduction in enlargement of the spleen or liver by 50% or more. 4. The blood count should show one or more of the following results: - Neutrophils more than 1, without need for exogenous growth factors. - Platelet counts greater than 100 x10\^9/L (100 000/ƒÝL) or 50% improvement over baseline without need for exogenous growth factors. - Hemoglobin greater than 11

Time frame: Up to 24 months

Population: Of the 23 participants registered on-study, 18 participants were evaluable.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
IbrutinibParticipants With Partial Remission (PR) at 24 Months15 Participants
Secondary

Overall Response at 24 Months

Overall Response is participants who achieve Complete Remission (CR) or Partial Remission (PR) at 24 months of treatment.

Time frame: Up to 24 months

Population: Of the 23 participants registered on-study, 18 participants were evaluable.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
IbrutinibOverall Response at 24 Months18 Participants
Secondary

Progression-Free Survival (PFS) at 24 Months

Time from date of treatment start until the date of progression or death from leukemia.

Time frame: 24 months

Population: Of the 23 participants registered on-study, 18 participants were evaluable.

ArmMeasureValue (MEDIAN)
IbrutinibProgression-Free Survival (PFS) at 24 MonthsNA Months

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026