NCT04517656

Biomarkers Impact Evaluation on the Post-transplant Immune Response After Allografting of Hematopoietic Stem Cells

Biomarkers Impact Evaluation on the Post-transplant Immune Response After Allografting of Hematopoietic Stem Cells: MENTALO Study

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (estimated)
• Sponsor: Centre Hospitalier Universitaire de Saint Etienne · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Chemotherapy or targeted therapy are usually used to treat hematological pathologies. Despite of medical improvement, some of these pathologies present drug resistances, or high risk of relapse. Hematopoietic stem cell (HSC) transplantation remain the gold standard of consolidation, to maintain a durable response. In this situation, allograft with hematopoietic stem cells donor aims at producing Graft-versus-Tumor effect, by producing a new immune system, reproducing anti-tumoral immunity. However, all hemopathies do not have the same sensibility. Nowadays, mechanisms underlying this phenomenon remain poorly understood. Indeed, few data precisely document the expression of immunological checkpoints and other biomarkers in the context of allogeneic HSC transplantation, particularly their impact on post-transplant outcome.

Detailed description

Chemotherapy or targeted therapy are usually used to treat hematological pathologies. Despite of medical improvement, some of these pathologies present drug resistances, or high risk of relapse. Hematopoietic stem cell (HSC) transplantation remain the gold standard of consolidation, to maintain a durable response. In this situation, allograft with hematopoietic stem cells donor aims at producing Graft-versus-Tumor effect, by producing a new immune system, reproducing anti-tumoral immunity. However, all hemopathies do not have the same sensibility. Nowadays, mechanisms underlying this phenomenon remain poorly understood. Indeed, few data precisely document the expression of immunological checkpoints and other biomarkers in the context of allogeneic HSC transplantation, particularly their impact on post-transplant outcome. Therefore, we want to systematically study the expression profile of different biomarkers during allogeneic transplantation, in order to establish a correlation between these expression patterns and post-transplant outcome. Ultimately, this research will enable to (i) have tools to predict the post-transplant response and (ii) define whether a targeted therapy could be beneficial or be contraindicated for adequate patient management. Patients will be selected for the study once they meet all the inclusion criteria. The study will be proposed to them during the pre-allogeneic consultation as part of their usual care. This study does not modify the treatment or the usual management of patients according to the current practice of pre- and post-transplant management. Clinically, it consists of building up a relevant biological collection.

Conditions

• Malignant Hemopathy

Interventions

Type	Name	Description
OTHER	Blood samples	A peripheral blood sample will be taken and will include 2 EDTA tubes of 5 mL, for a total volume of 10 mL: * Samples before the allograft, * Samples at different times post-allograft: 15 days, 30 days, 60 days, 90 days, 180 days, 360 days, * Samples in the event of the occurrence of concomitant events during the 12-month follow-up period: occurrence of acute Graft Versus Host Disease, chronic Graft Versus Host Disease, or relapse of the disease before the initiation of a new treatment.

Timeline

• Start date: 2022-05-25
• Primary completion: 2025-09-30
• Completion: 2026-09-30
• First posted: 2020-08-18
• Last updated: 2025-04-09

Locations

1 site across 1 country: France