A Phase 1/2 interventional study of Lenalidomide and Lenalidomide in Chronic Lymphocytic Leukaemia (CLL) and Small Lymphocytic Lymphoma (SLL), sponsored by Vitebsk Regional Clinical Cancer Centre. Recruiting at 1 site in Belarus. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-13.
Sponsored by Vitebsk Regional Clinical Cancer Centre · Phase 1/2, Interventional, and Treatment
This is a Phase I/II interventional, open-label treatment study designed to evaluate the safety and efficacy of concomitant therapy with anti-CD19 CAR T-cells and Lenalidomide in adult patients with relapsed/refractory chronic lymphocytic leukemia (CLL) who have been pretreated with Ibrutinib for 3 months prior to leukapheresis.
Patients receive ibrutinib 420 mg daily for 3 months before CAR T-cell infusion. Obinutuzumab 1000 mg is administered 14 days before leukapheresis to reduce circulating CLL cells. Lymphodepletion consists of fludarabine 25 mg/m² and cyclophosphamide 250 mg/m² on days -5 to -3. In a 3+3 dose-escalation design, patients receive a single infusion of 25 × 10⁶ (DL1), 50 × 10⁶ (DL2), or 100 × 10⁶ (DL3) autologous CD19 CAR T cells. Lenalidomide 10 mg is administered orally on days 0 through 6. At day 28, patients with measurable residual disease (MRD)-positive disease are eligible for lenalidomide 10 mg 1-14 days per os plus obinutuzumab 1000 mg IV 1,8,15 days on cycle 1 and on day 1 on 2-6 cycles consolidation, whereas patients with MRD-negative disease receive lenalidomide 10 mg per os 1-14 days maintenance for 3 cycles.
The main purposes of the Phase I part are:
The main purposes of the Phase II part are:
2,036 studies on the registry are indexed under Leukemia, Lymphocytic, Chronic, B-Cell; 237 are open to participants now.
This study's planned enrollment of 24 is below the median of 39 across 1,603 interventional studies indexed under Leukemia, Lymphocytic, Chronic, B-Cell.
Browse Leukemia, Lymphocytic, Chronic, B-Cell studies →This is the only study on the registry with Vitebsk Regional Clinical Cancer Centre as lead sponsor.
Compared within Leukemia, Lymphocytic, Chronic, B-Cell, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Leukemia, B-Cell. The counts are of registry records indexed under each term, refreshed daily. How we classify →
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.
Creatinine \< 1.6 mg/dl /AST \< 3x Total \<2.0 mg/dl with the exception of patients with Gilbert syndrome; patients with Gilbert syndrome may be included if their total bilirubin is ≥ 3.0 x ULN and direct bilirubin ≤ 1.5 x ULN.
Exclusion Criteria:
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.
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.
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.
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.
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
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.
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.
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.
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.
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.
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.
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.
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.
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.
GVHD (graft-versus-host disease)
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
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.
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.
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.
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.
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.
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.
Phase 1: Determine safety of IL-7/IL-15 expanded 25x10\^6 antiCD19 CAR-T cells with concomitant Lenalidomide 10 mg per os days 0-6 in patients with relapsed/refractory CLL. Patients will be enrolled in a 3+3 fashion. At day 28, patients with measurable residual disease (MRD)-positive disease are eligible for lenalidomide 10 mg 1-14 days per os plus obinutuzumab 1000 mg IV 1,8,15 days on cycle 1 and on day 1 on 2-6 cycles consolidation, whereas patients with MRD-negative disease receive lenalidomide 10 mg per os 1-14 days maintenance for 3 cycles. 3 patients per cohort.
Drug: Lenalidomide · Biological: Obinutuzumab Injection [Gazyva]
Phase 1: Phase 1: Determine safety of IL-7/IL-15 expanded 50x10\^6 antiCD19 CAR-T cells with concomitant Lenalidomide 10 mg per os days 0-6 in patients with relapsed/refractory CLL. Patients will be enrolled in a 3+3 fashion. At day 28, patients with measurable residual disease (MRD)-positive disease are eligible for lenalidomide 10 mg 1-14 days per os plus obinutuzumab 1000 mg IV 1,8,15 days on cycle 1 and on day 1 on 2-6 cycles consolidation, whereas patients with MRD-negative disease receive lenalidomide 10 mg per os 1-14 days maintenance for 3 cycles. 3 patients per cohort.
Drug: Lenalidomide · Biological: Obinutuzumab Injection [Gazyva]
Phase 1: Phase 1: Determine safety of IL-7/IL-15 expanded 100x10\^6 antiCD19 CAR-T cells with concomitant Lenalidomide 10 mg per os days 0-6 in patients with relapsed/refractory CLL. Patients will be enrolled in a 3+3 fashion. At day 28, patients with measurable residual disease (MRD)-positive disease are eligible for lenalidomide 10 mg 1-14 days per os plus obinutuzumab 1000 mg IV 1,8,15 days on cycle 1 and on day 1 on 2-6 cycles consolidation, whereas patients with MRD-negative disease receive lenalidomide 10 mg per os 1-14 days maintenance for 3 cycles. 9 patients per cohort.
Drug: Lenalidomide · Biological: Obinutuzumab Injection [Gazyva]
Lenalidomide 10mg per os 0- 6 days
Also known as: Revlimid
Lenalidomide 10 mg per os 1 -14 days
Also known as: Revlimid
Combined with Lenalidomide 10 mg per os 1- 14 days for 6 cycles
Adverse events incidence
Time frame: 24 months
Safety
* To preliminarily explore the safety (incidence of CRS, ICANS, HLH, infections, late ICAHT, and cytopenias) and tolerability. * To explore the pharmacokinetics of CAR-T cells.
Time frame: 24 months
Efficacy
Time frame: - Overall response rate, including complete response (CR) and partial response (PR) rates. - Progression-free survival rates. - Overall survival rates. - MRD negativity rates measured by flow cytometry.
Plan to share: Undecided
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Studies of the drug tested here: Lenalidomide
Leukemia, Lymphocytic, Chronic, B-Cell →