Randomized, Open-label, Two-arms, Phase III Comparative Study Assessing the Role of Involved Mediastinal Radiotherapy After Rituximab Containing Chemotherapy Regimens to Patients With Newly Diagnosed Primary Mediastinal Large B-Cell Lymphoma
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|ClinicalTrials.gov Identifier: NCT01599559|
Recruitment Status : Active, not recruiting
First Posted : May 16, 2012
Last Update Posted : January 22, 2021
Primary mediastinal large B cell lymphoma is treated with a combination of chemotherapy and the monoclonal antibody rituximab (chemoimmunotherapy).
Following chemoimmunotherapy patients receive radiation therapy if they have residues which may be active tumour. However at the end of chemoimmunotherapy the majority of patients show tissue scarring that is not necessarily active tumor. In recent years, PET/CT has proved to be a good tool to accurately identify active tumor from scar tissue in patients treated for mediastinal lymphoma.The purpose of this trial is to test whether radiation therapy is really necessary in patients where PET/CT has shown that the tumor is no longer active. Therefore we will compare radiation treatment with careful observation.
Patients that at the end of conventional treatment of chemoimmunotherapy have a negative PET/CT (i.e., without residues suspected to contain active tumor), will randomly assigned to two different treatment groups: one treatment group will receive the radiation treatment, and the other treatment group will receive careful observation.
The trial is planned according to a non-inferiority design aimed at demonstrating that progression free survival after the experimental treatment (observation) is not worse than after the standard comparator (mediastinal irradiation.Participation in this study could spare patients with complete remission at the end of chemo immunotherapy (PET/CT negative) radiation therapy that may be unnecessary.
|Condition or disease||Intervention/treatment||Phase|
|Primary Mediastinal B-cell Lymphoma||Other: observation Radiation: 3D-Conformal Radiotherapy (3D-CRT)||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||540 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Official Title:||IELSG37: A Randomized, Open-label, Multicentre, Two-arm Phase III Comparative Study Assessing the Role of Involved Mediastinal Radiotherapy After Rituximab Containing Chemotherapy Regimens to Patients With Newly Diagnosed Primary Mediastinal Large B-Cell Lymphoma (PMLBCL)|
|Actual Study Start Date :||October 2012|
|Estimated Primary Completion Date :||March 2022|
|Estimated Study Completion Date :||May 2025|
Follow up visits are scheduled from randomization. Patients will be seen at 3-months intervals for 24 months, then every 6 months until 5 years from randomization.
Active Comparator: mediastinal irradiation
Radiotherapy will be delivered in this phase III protocol, as alternative to observation, as consolidation treatment in patients achieving a CR status (PET/CT scan negative) at the end of R-chemotherapy, with a total dose of 30 Gy.
Radiation: 3D-Conformal Radiotherapy (3D-CRT)
Radiation treatment should start within 6-8 weeks after the end of chemotherapy.
- Progression free survival (PFS) [ Time Frame: 2 years from the randomization ]
The primary outcome endpoint will be Progression Free Survival (PFS) in patients PET-negative after R-chemotherapy.
Failure events for PFS are progression (defined as an increase in size of existing masses or the development of new sites of disease using the same radiological investigations CT or PET/CT and/or MRI - as for the pre-chemotherapy assessment) or death from any cause.
- Overall survival (OS) [ Time Frame: 5 years from registration ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01599559
|Study Chair:||Maurizio Martelli, MD||Università La Sapienza (Rome - Italy)|
|Study Chair:||Andrew J Davies, MD||University of Southampton (UK)|
|Study Chair:||Mary Gospodarowicz, MD||Princess Margaret Hospital Toronto (Canada)|
|Study Chair:||Sally F Barrington, MD||St. Thomas' - London (UK)|
|Study Chair:||Alberto Biggi, MD||AO S. Croce e Carle, Cuneo (Italia)|
|Study Chair:||Annibale Versari, MD||S.Maria Nuova Hospital, Reggio Emilia (Italia)|
|Study Chair:||Gianni Ciccone, MD||CPO Torino (Italy)|
|Study Chair:||Stèphane Chauvie, MD||AO S. Crtoce e Carle - Cuneo (Italy)|
|Study Chair:||Luca Ceriani, MD||IOSI - Bellinzona (Switzerland)|