18 and older, any sex, with Relapsed or Refractory Chronic Lymphocytic Leukemia. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Number of Participants With Treatment-emergent Adverse EventsPrimary· From first dose of study drug to 30 days after the last dose; the maximum duration of treatment was 251, 265, and 267 weeks in the 5 mg, 10 mg, and 15 mg treatment groups respectively.
Adverse events (AEs) were graded for severity by the investigator according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 3.0 with the exceptions of hematologic toxicities and tumor lysis syndrome, according to the following scale: Grade 1 = Mild Grade 2 = Moderate Grade 3 = Severe Grade 4 = Life Threatening or disabling AE Grade 5 = Death The investigator determined the relationship of each AE to study drug based on the timing of the AE and whether other medications, therapeutic interventions, or underlying conditions could provide a suffi
Any adverse events
Group
Value
95% CI
Lenalidomide 5 mg
34
Lenalidomide 10 mg
34
Lenalidomide 15 mg
35
Treatment-related adverse events (TRAE)
Group
Value
95% CI
Lenalidomide 5 mg
33
Lenalidomide 10 mg
34
Lenalidomide 15 mg
32
Grade 3/4 adverse events
Group
Value
95% CI
Lenalidomide 5 mg
33
Lenalidomide 10 mg
32
Lenalidomide 15 mg
34
Treatment-related Grade 3/4 adverse events
Group
Value
95% CI
Lenalidomide 5 mg
31
Lenalidomide 10 mg
32
Lenalidomide 15 mg
30
Grade 5 adverse events
Group
Value
95% CI
Lenalidomide 5 mg
4
Lenalidomide 10 mg
4
Lenalidomide 15 mg
3
Treatment-related Grade 5 adverse events
Group
Value
95% CI
Lenalidomide 5 mg
2
Lenalidomide 10 mg
2
Lenalidomide 15 mg
0
Serious adverse events
Group
Value
95% CI
Lenalidomide 5 mg
24
Lenalidomide 10 mg
24
Lenalidomide 15 mg
27
Treatment-related serious adverse events
Group
Value
95% CI
Lenalidomide 5 mg
15
Lenalidomide 10 mg
13
Lenalidomide 15 mg
20
Overall Response Rate (ORR)Secondary· Response was assessed after 3 cycles of therapy (Week 12) and every 4 weeks thereafter until disease progression. Maximum time on study was 91 months.
ORR was defined as the percentage of patients with a complete response (CR), CR with incomplete bone marrow (BM) recovery (CRi) or partial response (PR) during treatment. Response was assessed according to the 2008 International Workshop on Chronic Lymphocytic Leukemia (iwCLL) guidelines. Per the guidelines, a CR required peripheral blood lymphocytes below 4 x 10\^9/L, absence of lymphadenopathy, no hepatomegaly or splenomegaly, absence of disease and blood counts neutrophils \>1.5 x 10\^9/L, platelets \>100 x 10\^9/L, hemoglobin (hgb) \>11g/dL) and BM at least normocellular for age. CRi = CR
Group
Value
95% CI
Lenalidomide 5 mg
47.1
Lenalidomide 10 mg
37.1
Lenalidomide 15 mg
40.0
Kaplan-Meier Estimate of Duration of ResponseSecondary· Response was assessed after 3 cycles of therapy (Week 12) and every 4 weeks thereafter until disease progression. Maximum time on study was 91 months.
Duration of response (DOR) was defined as the time from the first visit where PR, CRi, or CR was documented to progressive disease (PD). Duration of response was censored at the last date that the participant was known to be progression-free for participants who had not progressed at the time of analysis or who withdrew consent or were lost to follow-up prior to documentation of progression.
Group
Value
95% CI
Lenalidomide 5 mg
101.1
60.6 – 239.3
Lenalidomide 10 mg
35.1
22.0 – NA
Lenalidomide 15 mg
88.8
72.1 – 127.3
Time to ResponseSecondary· Response was assessed after 3 cycles of therapy (Week 12) and every 4 weeks thereafter until disease progression. Maximum time on study was 91 months.
Time to response (TTR) was calculated as the time from randomization to the first documented date of response (PR, CRi or CR) based on iwCLL guidelines for participants with an objective response during the treatment period.
Group
Value
95% CI
Lenalidomide 5 mg
16.9
12.1 – 74.1
Lenalidomide 10 mg
12.6
8.4 – 52.1
Lenalidomide 15 mg
12.7
12.0 – 147.3
Kaplan-Meier Estimate of Time to ProgressionSecondary· From randomization until the end of the study; maximum time on study was 91 months.
Time to progression (TTP) was defined as the time from randomization to the first documented progression. For participants who did not progress during the study, TTP was censored at the last adequate response assessment showing evidence of no disease progression.
Group
Value
95% CI
Lenalidomide 5 mg
96.3
20.6 – 251.3
Lenalidomide 10 mg
47.6
31.9 – 261.1
Lenalidomide 15 mg
66.3
20.1 – 89.3
Kaplan-Meier Estimate of Event-Free SurvivalSecondary· From randomization until the end of the study; maximum time on study was 91 months.
Event-free survival (EFS) is the interval between the start of treatment to the first sign of disease progression, or treatment for relapse or death (whichever occurred first). If withdrawal of consent or loss to follow-up occurred before documented progression or death, then these observations were censored at the date when the last complete tumor assessments determined a lack of progression.
Group
Value
95% CI
Lenalidomide 5 mg
25.6
16.1 – 77.6
Lenalidomide 10 mg
31.9
21.1 – 47.6
Lenalidomide 15 mg
24.1
13.4 – 66.3
Kaplan-Meier Estimate of Progression Free SurvivalSecondary· From randomization until the end of the study; maximum time on study was 91 months.
Progression-free survival (PFS) was calculated as the time from randomization to the first documented progression or death due to any cause during or after the treatment period, whichever occurred first. The progression date was assigned to the earliest time when any progression is observed without prior missing assessments. If withdrawal of consent or loss to follow-up occurred before documented progression or death, then these observations were censored at the date when the last complete tumor assessments determined a lack of progression.
Group
Value
95% CI
Lenalidomide 5 mg
31.4
16.1 – 96.3
Lenalidomide 10 mg
45.1
22.4 – 120.1
Lenalidomide 15 mg
66.3
16.1 – 89.3
Kaplan-Meier Estimate of Overall SurvivalSecondary· From randomization until the end of the study; maximum time on study was 91 months.
Overall survival (OS) was defined as the time from randomization to death from any cause. Overall survival was censored at the last date that the participant was known to be alive for participants who were alive at the time of analysis and for participants who had withdrawn consent or were lost to follow-up before death was documented.
Group
Value
95% CI
Lenalidomide 5 mg
161.0
64.9 – 209.0
Lenalidomide 10 mg
106.7
83.4 – 235.7
Lenalidomide 15 mg
154.6
80.9 – 214.7
Adverse events — posted to ClinicalTrials.gov
Time frame: From first dose of study drug to 30 days after the last dose; the maximum duration of treatment was 251, 265, and 267 weeks in the 5 mg, 10 mg, and 15 mg treatment groups respectively..
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
Lenalidomide 5 mg
Serious: 24/34 (71%)
Deaths: 24/34
Lenalidomide 10 mg
Serious: 24/34 (71%)
Deaths: 23/34
Lenalidomide 15 mg
Serious: 27/35 (77%)
Deaths: 26/35
Serious adverse events (115 terms)
Reaction
System
Lenalidomide 5 mg
Lenalidomide 10 mg
Lenalidomide 15 mg
PNEUMONIA
Infections and infestations
—
—
—
TUMOUR FLARE
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
—
—
—
FEBRILE NEUTROPENIA
Blood and lymphatic system disorders
—
—
—
NEUTROPENIA
Blood and lymphatic system disorders
—
—
—
ABDOMINAL PAIN
Gastrointestinal disorders
—
—
—
HYPERCALCAEMIA
Metabolism and nutrition disorders
—
—
—
THROMBOCYTOPENIA
Blood and lymphatic system disorders
—
—
—
PYREXIA
General disorders
—
—
—
BACTERAEMIA
Infections and infestations
—
—
—
PNEUMOCYSTIS JIROVECII PNEUMONIA
Infections and infestations
—
—
—
RESPIRATORY TRACT INFECTION
Infections and infestations
—
—
—
TUMOUR LYSIS SYNDROME
Metabolism and nutrition disorders
—
—
—
BASAL CELL CARCINOMA
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
—
—
—
SQUAMOUS CELL CARCINOMA OF SKIN
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
—
—
—
ACUTE KIDNEY INJURY
Renal and urinary disorders
—
—
—
DYSPNOEA
Respiratory, thoracic and mediastinal disorders
—
—
—
PNEUMONITIS
Respiratory, thoracic and mediastinal disorders
—
—
—
PULMONARY EMBOLISM
Respiratory, thoracic and mediastinal disorders
—
—
—
PULMONARY OEDEMA
Respiratory, thoracic and mediastinal disorders
—
—
—
DEEP VEIN THROMBOSIS
Vascular disorders
—
—
—
HYPOTENSION
Vascular disorders
—
—
—
AGRANULOCYTOSIS
Blood and lymphatic system disorders
—
—
—
ANAEMIA
Blood and lymphatic system disorders
—
—
—
FEBRILE BONE MARROW APLASIA
Blood and lymphatic system disorders
—
—
—
IMMUNE THROMBOCYTOPENIC PURPURA
Blood and lymphatic system disorders
—
—
—
Other adverse events (139 terms — click to expand)
Reaction
System
Lenalidomide 5 mg
Lenalidomide 10 mg
Lenalidomide 15 mg
NEUTROPENIA
Blood and lymphatic system disorders
—
—
—
THROMBOCYTOPENIA
Blood and lymphatic system disorders
—
—
—
FATIGUE
General disorders
—
—
—
TUMOUR FLARE
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
The purpose of this study is to determine the safety and effectiveness of different dose regimens of lenalidomide in patients with relapsed or refractory chronic lymphocytic leukemia (CLL).
Publications & conference data
2 peer-reviewed publications reference this trial (live from Europe PMC):
NCT05776979 — Post-Transplant Maintenance Therapy With Isatuximab Plus Lenalidomide for High-Risk Multiple Myeloma Patients
· Phase 2
· recruiting
NCT05867030 — Parsaclisib in Patients With Relapsed or Refractory Follicular Lymphoma
· Phase 1
· withdrawn
NCT07184424 — Real-world Study of Lenalidomide After First-line Treatment Lenvatinib With PD-1 in Advanced HCC
· NA
· completed
NCT05846750 — Obinutuzumab in Combination With Lenalidomide in Relapsed or Refractory Marginal Zone Lymphoma
· Phase 2
· recruiting
NCT05260619 — Lenalidomide Maintenance Treatment in Patients With Primary Central Nervous System Lymphoma
· Phase 2
· recruiting
Other recruiting trials for Relapsed or Refractory Chronic Lymphocytic Leukemia
Currently open trials in the same condition.
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· recruiting
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Celgene
Last refreshed: 31 October 2018
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00963105.