Inflammatory Response to Paramyxovirus Infection in an Ex-vivo Model of Bronchial Epithelial Cells in Allogeneic HSCT Recipients

Stem Cell Transplantation Clinical Trial

— ALLOVIRO  

Official title:

Inflammatory Response to Paramyxovirus Infection in an Ex-vivo Model of Bronchial Epithelial Cells in Allogeneic Hematopoietic Stem Cell Recipients

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT03684083
• Other study ID #: 2017-A01325-48
• Status: Active, not recruiting
• Start date: November 1, 2018
• Est. completion date: July 2020

Study information

• Verified date: December 2019
• Source: Assistance Publique - Hôpitaux de Paris
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Introduction. Chronic graft-versus-host-disease (GVHD) is the main late noninfectious complication after allogeneic hematopoietic stem cell transplantation (HSCT) that can affect several organs. Bronchiolitis obliterans syndrome (BOS) is recognized as pulmonary chronic GVHD. A diagnosis of a lower respiratory tract infection in the first 100 days following transplant has been associated to the development of BOS. One hypothesis is that the first stage driving to BOS is a previous aggression of bronchial epithelial cells by various factors such as chemotherapy and radiotherapy. Thereafter, data suggest that viral infections, in particular Parainfluenza viruses could be a trigger for BOS. The alloimmune reaction activated by the respiratory virus could lead to the fibrosis process. Our hypothesis is that the bronchial epithelium of allogeneic HSCT recipients has phenotypic specificities that are associated with a specific response to the viral respiratory infections (in particular paramyxovirus) leading to the development of BOS.

Main objective. To characterize and compare the inflammatory response after infection with Parainfluenza 3 virus in an ex-vivo model of bronchial epithelial cells obtained from allogeneic HSCT recipients and controls.

Objective secondary. To characterize the phenotypic specificities of allogeneic HSCT recipients' bronchial epithelium.

Methodology, and experimental plan. Prospective, monocentric research. Bronchial biopsies obtained from patients, will be completely differentiated after 21 days of culture. Epithelial cells will be infected by the virus strain Parainfluenza 3. Transcriptome of the cells from both allogeneic HSCT patients and controls, infected and non-infected will be analyzed 48 hours after infection.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 14
• Est. completion date: July 2020
• Est. primary completion date: October 1, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Allogeneic HSCT patients [case]

• requirement of ng bronchial fibroscopy with bronchial biopsies for the exploration of FEV1 decline [case]

• non Allogeneic HSCT patients [control]

• .requirement of bronchial fibroscopy for exploration of a lung mass or of interstitial lung disease, requiring bronchial biopsies [control]

Exclusion Criteria:

• Minor or major patients protected

• Radiotherapy or chemotherapy [control group]

• Respiratory infection

• History of smoking >= 15 packs/yr

Related Conditions & MeSH terms

• Paramyxoviridae Infections
• Stem Cell Transplantation

Intervention

Procedure:
• bronchial biopsies
bronchial fibroscopy with bronchial biopsies

Locations

Country	Name	City	State
France	Saint Louis Hospital	Paris

Sponsors (1)

Lead Sponsor	Collaborator
Assistance Publique - Hôpitaux de Paris

Country where clinical trial is conducted

France, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Cells Transcriptome after infection by parainfluenza virus	inflammatory response after infection with Parainfluenza 3 virus in an ex-vivo model of bronchial epithelial cells assessed by cells transcriptome	21 days