A Phase 2 interventional study of Ibrutinib and Rituximab in Diffuse Large B-Cell Lymphoma, sponsored by Grupo Español de Linfomas y Transplante Autólogo de Médula Ósea. Completed at 17 sites in Spain. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2024-10-10.
Sponsored by Grupo Español de Linfomas y Transplante Autólogo de Médula Ósea · Phase 2, Interventional, and Treatment
Multicentric phase II trial to evaluate efficacy and safety of ibrutinib in combination with rituximab, gemcitabine, oxaliplatin and dexamethasone followed by Ibrutinib maintenance in patients with refractory/relapsed non-GCB DLBCL non candidates to autologous stem-cell transplantation (ASCT) An extensive biological study will be conducted in order to further characterize this population of DLBCL patients and correlate the response obtained with the biological profile of the tumor.
The use of highly effective rituximab-containing therapy for treating diffuse large B-cell lymphoma (DLBCL) makes it more difficult to salvage relapsed or refractory patients. In addition, patients with advanced age or significant comorbidities, who are consequently not candidates for high-dose consolidative therapy, have a very poor prognosis. Prospective studies investigating new salvage regimens are essential.
The combination of rituximab, gemcitabine and oxaliplatin (R-GEMOX) is an effective salvage regimen for patients with relapsing or refractory DLBCL, with a favourable toxicity profile for unfit and/or elderly patients. Ibrutinib, an oral Bruton's tyrosine kinase inhibitor, is a potent killer of ABC DLBCL cell lines in vitro and in xenografts.
It is expected that the combination of ibrutinib with R-GEMOX-Dexa could be effective and well tolerated. Thus, it is proposed an open-label, non-randomized, multicentre, phase II trial, to investigate the safety and efficacy of the combination of ibrutinib with rituximab, gemcitabine, oxaliplatine and dexamethasone followed by ibrutinib maintenance as salvage therapy for patients with relapsed or refractory non-GCB DLBCL non-candidates to stem cell transplant.
Non-germinal center B-cell-like (GCB) subtype according to Hans algorithm (local laboratories).
-A central review will be performed for confirmation of the germinal center B-cell-like, however even when negative results are reported, the patient will still be part of the study if clinical benefit after cycle 4 is documented (stable disease, partial response and complete response).
Relapsed or refractory disease after:
Hematology values must be within the following limits:
Biochemical values within the following limits:
Exclusion Criteria:
Candidates to autologous stem cell transplant.
Subjects will receive Ibrutinib with R-GEMOX-Dexa followed by Ibrutinib maintenance according to: Induction phase: * Rituximab 375 mg/m2 IV day 1 * Gemcitabine 1000 mg/m2 IV on day 1 or 2 (at investigator discretion). * Oxaliplatine 100 mg/m2 on day 1 or 2 (after Gemcitabine administration); * Dexamethasone 20 mg orally or IV on day 1 and orally on days 2-3. * Ibrutinib 560 mg daily for 14 days. Responding patients will receive 2 (if CR) or 4 (if PR) additional cycles every 14 days.Patients with SD and ABC profile will receive 4 additional cycles. Maintenance phase: Responding patients will receive Ibrutinib 560 mg daily - Continuous cycles until a maximum of 2 years, disease progression or unacceptable toxicity.
Drug: Ibrutinib · Drug: Rituximab · Drug: Gemcitabine · Drug: Oxaliplatin · Drug: Dexamethasone
Ibrutinib 560 mg daily for 14 days during induction cycles. Maintenance phase: Continuous cycles until disease progression or unacceptable toxicity (maximum of 2 years).
Rituximab 375 mg/m2 IV day 1 during 4 cycles.
Gemcitabine 1000 mg/m2 IV (30-minute infusion) on day 1 or 2, 4 cycles every 14 days.
Oxaliplatin 100 mg/m2 (3-hour infusion) on day 1 or 2, after Gemcitabine infusion, 4 cycles every 14 days.
Dexamethasone 20 mg orally or IV on day 1 and orally on days 2-3, 4 cycles every 14 days.
Overall Response (OR) Rate
Overall Response (OR) rate (complete remission + partial response) measured by PET(Positron Emission Tomography)/CT image scan. OR will be assessed by Lugano Classification: Revised Criteria for Response Assessment.
Time frame: Treatment responses will be evaluated 30 days after end of study treatment which can be occurred after 2 years and 4 months
CR Rate During Induction and Maintenance Phases.
Complete treatment responses evaluation during 21-35 days after initiation of 6 or 8 cycle of study treatment (depend of treatment responses obtained from cycle 4) and 30 days after end of study treatment which can be occurred after 2 years and 4 months
Time frame: Complete treatment responses will be evaluated 30 days after end of study treatment which can be occurred after 2 years and 4 months
Response Duration
Response duration defined as the time from the documentation of tumor response to disease progression or death, in the event of no documented recurrence, or start of a new anti - lymphoma treatment because of refractory or persistent disease.
Time frame: Response duration will be evaluated at any time during the study when tumor response is documented or after end of study treatment which can be occurred after 2 years and 4 months.
Progression Free Survival
Progression free survival defined as the time between start of treatment and the first documentation of recurrence, progression, or death in the event of no documented recurrence, or start of a new anti - lymphoma treatment, due a refractory or persistent disease. Progression is defined using Lugano Classification for response assessment for Non-Hodgkin Lymphoma, defined as Score of 4 or 5 with an increase in uptake intensity over baseline period for Individual lymph nodes/target lymph node masses; New areas of FDG avidity consistent with lymphoma at mid- or end-of-treatment assessment for Extranodal injuries; new injuries; New or recurrent areas of FDG avidity in bone marrow.
Time frame: Progression free survival will be evaluated at any time during the study when first documentation of recurrence, progression, or death or after end of study treatment which can be occurred after 2 years and 4 months
Event-free Survival
Event-free survival defined as the time between start of treatment and the first documentation of adverse events and serious adverse events graded according to NCI CTCAE v4.0
Time frame: 2 years and 4 months.
Overall Survival
Overall survival is defined as the time between the start of treatment and death from any cause. Patients that are withdrawn from the trial or lost of follow-up, will be censored with the date of last contact. Patients who are still alive at the end of the study will be censored at that time.
Time frame: 2 years
Percentage of Participants That Present Treatment-Related Adverse Events Oxaliplatin and Dexamethasone
Safety and tolerability will be assessed during any phase of study treatment and 30 days after end of study treatment which can be occurred after 2 years and 4 months and will be classified according to the Common Toxicity CNC
Time frame: 2 years and 4 months
64 patients from 15 different hospitals were registered.
| Milestone | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Started | 64 |
| Completed | 64 |
| Not completed | 0 |
Overall Response (OR) rate (complete remission + partial response) measured by PET(Positron Emission Tomography)/CT image scan. OR will be assessed by Lugano Classification: Revised Criteria for Response Assessment.
| Participants | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Overall Response (OR) Rate | 36 |
Complete treatment responses evaluation during 21-35 days after initiation of 6 or 8 cycle of study treatment (depend of treatment responses obtained from cycle 4) and 30 days after end of study treatment which can be occurred after 2 years and 4 months
| Participants | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| CR Rate During Induction and Maintenance Phases. | 25 |
Response duration defined as the time from the documentation of tumor response to disease progression or death, in the event of no documented recurrence, or start of a new anti - lymphoma treatment because of refractory or persistent disease.
| months | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Response Duration | 6.5 (0.0 to 38.3) |
Progression free survival defined as the time between start of treatment and the first documentation of recurrence, progression, or death in the event of no documented recurrence, or start of a new anti - lymphoma treatment, due a refractory or persistent disease. Progression is defined using Lugano Classification for response assessment for Non-Hodgkin Lymphoma, defined as Score of 4 or 5 with an increase in uptake intensity over baseline period for Individual lymph nodes/target lymph node masses; New areas of FDG avidity consistent with lymphoma at mid- or end-of-treatment assessment for Extranodal injuries; new injuries; New or recurrent areas of FDG avidity in bone marrow.
| months | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Progression Free Survival | 4.1 (2.2 to 6.1) |
Event-free survival defined as the time between start of treatment and the first documentation of adverse events and serious adverse events graded according to NCI CTCAE v4.0
| months | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Event-free Survival | 4.03 (2.5 to 5.6) |
Overall survival is defined as the time between the start of treatment and death from any cause. Patients that are withdrawn from the trial or lost of follow-up, will be censored with the date of last contact. Patients who are still alive at the end of the study will be censored at that time.
| months | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Overall Survival | 11.67 (7 to 16.3) |
Safety and tolerability will be assessed during any phase of study treatment and 30 days after end of study treatment which can be occurred after 2 years and 4 months and will be classified according to the Common Toxicity CNC
| Participants | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Percentage of Participants That Present Treatment-Related Adverse Events Oxaliplatin and Dexamethasone | 55 |
Collected over 2 years and 4 months. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Ibrutinib -R-GEMOX-Dexa | 46/64 (71.9%) | 33/64 (51.6%) | 63/64 (98.4%) |
| Event | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Diarrhoea - Grade 3Gastrointestinal disorders | 2/64 |
| Fever - Grade 3General disorders | 2/64 |
| Fracture - Grade 3Injury, poisoning and procedural complications | 2/64 |
| Respiratory failure - Grade 3Respiratory, thoracic and mediastinal disorders | 2/64 |
| Abdominal pain - Grade 3Gastrointestinal disorders | 1/64 |
| Akathisia - Grade 3Nervous system disorders | 1/64 |
| Anemia - Grade 3Blood and lymphatic system disorders | 1/64 |
| Back Pain - Grade 3Musculoskeletal and connective tissue disorders | 1/64 |
| Confusion - Grade 3Nervous system disorders | 1/64 |
| Diarrhoea - Grade 2Gastrointestinal disorders | 1/64 |
| Event | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Platelet count decreasedBlood and lymphatic system disorders | 39/64 |
| Neutrophil count decreasedBlood and lymphatic system disorders | 22/64 |
| DiarrhoeaGastrointestinal disorders | 20/64 |
| AnemiaBlood and lymphatic system disorders | 14/64 |
| NauseaGeneral disorders | 14/64 |
| Lymphocyte count decreaseBlood and lymphatic system disorders | 10/64 |
| ParesthesiaNervous system disorders | 8/64 |
| FatigueGeneral disorders | 7/64 |
| VomitingGastrointestinal disorders | 6/64 |
| HypomagnesemiaBlood and lymphatic system disorders | 4/64 |
| Age, Continuous(years) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Median | 67.4 (24.5 to 83.7) |
| Sex: Female, Male(Participants) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Female | 26 |
| Male | 38 |
| Race and Ethnicity Not Collected(Participants) | Ibrutinib -R-GEMOX-Dexa |
|---|
| Region of Enrollment(participants) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Spain | 64 |
| ECOG-PS(Participants) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| 0 | 23 |
| 1 | 31 |
| 2 | 10 |
| DLBCL type(Participants) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| DLBCL without specification | 60 |
| DLBCL rich in T lymphocytes | 3 |
| Follicular lymphoma | 1 |
| Previous lines of treatment(Previous lines of treatment) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| Median | 2 (1 to 5) |
| International prognostic index (IPI)(Participants) | Ibrutinib -R-GEMOX-Dexa |
|---|---|
| 0-1 | 6 |
| 2-3 | 43 |
| 4-5 | 13 |
| Unk | 2 |
2 further baseline measures are reported on the registry.
Documents are hosted by the registry — open the source record to download them.
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