MUltiple Sclerosis : T Cell / B Cell Exploration | NCT04231253

Studies
MUltiple Sclerosis : T Cell / B Cell Exploration

NCT04231253

Sponsor

Rennes University Hospital

Status

Completed

Last Update Posted

Dec 2, 2021Actual

Enrollment

90Actual

Phase

Not provided

Conditions

Multiple Sclerosis

Interventions

Not provided

Countries

France

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

Dec 2021

Overall Recruitment Status or Expanded Access Status

Completed

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Feb 25, 2019Actual

Primary Completion Date

Oct 31, 2021Actual

Completion Date

Oct 31, 2021Actual

First Submitted Date

Jan 13, 2020

First Submission Date that Met QC Criteria

Jan 13, 2020

First Posted Date

Jan 18, 2020Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Dec 1, 2021

Last Update Posted Date

Dec 2, 2021Actual

Description Module

Brief Summary

This study, an ancillary to ABCD-SEP (NCT03744351), will be interested in more precisely characterizing circulating and infiltrating TH cells in Multiple Sclerosis whether at the transcriptomic level or at the functional level.

Detailed Description

Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the Central Nervous System (CNS) affecting mostly young adults between 20 and 40 years of age. This disease is the leading cause of non-traumatic disability in young adults.

MS has long been considered a predominantly T-cell mediated disease. However, the remarkable efficacy of anti-CD20 monoclonal antibodies in this disease has demonstrated the major role of B-cell in the pathophysiology of this disease.

The B-cell have many functions: these cells are indeed able to secrete cytokines (pro and anti inflammatory), to present antigens to T lymphocytes, but also to differentiate into plasmocytic cells and thus to secrete immunoglobulins. Several studies have shown that B-cell in patients with MS secrete significantly more pro-inflammatory cytokines (GM-CSF, IL-6, TNFα). In addition, infiltrates and tertiary lymphoid structures have been found in the meninges of patients with MS, particularly in progressive forms of the disease. It seems clear to this day that these cells are strongly involved in the development of MS. Despite the many advances made recently in understanding the role of B-cell in the pathophysiology of MS, the precise involvement of plasma cells and their functions at different stages of the disease remains unclear.

Folluclar helper T cells (TFH) play a crucial role in lymphocyte B differentiation. These cells are located within the germinal centers in the secondary lymphoid organs, and their memory compartment also circulates in the blood. Several circulating TFH subpopulations have recently been defined, with different "helping" capacities.

Design Module

Study Type

Observational

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Target Follow-Up Duration

Not provided

Phases

Not provided

Interventional Study Design

Allocation

Not provided

Intervention Model

Biospecimen

No data available

No data is available for this block.

Enrollment

90Actual

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
To compare the transcriptome profile of infiltrating TFH cells from CIS patients to non-MS patients with neurological inflammatory diseases	Comparison of each gene expression of infiltrating TFH cells from CIS patients to those of non-MS patients with neurological inflammatory diseases by RNAsequencing	At inclusion

Secondary Outcomes

Measure	Description	Time Frame
To compare the transcriptome profile of infiltrating TFH cells from CIS patients to healthy volunteers.	Comparison of each gene expression of infiltrating TFH cells from CIS patients to those of healthy volunteers (HV) by RNAsequencing	At inclusion
To compare the B cell differentiation helping abilities of TFH cells from MS patients to those of HV

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

Regarding MS patients (remitting or progressive untreated):

Adult (age greater than or equal to 18 years) of both sexes;
MS fulfilling the criteria of McDonald 2017;
Remittent or progressive form;
No immunomodulatory or immunosuppressive therapy for at least 3 months;
Free, informed and written consent signed by the patient.

Regarding Clinically Isolated Syndrome:

Adult (age greater than or equal to 18 years) of both sexes;
Clinically isolated syndrome suggestive of MS (at least two typical lesions in two different locations);
Patient receiving a Lumbar Puncture (PL) for diagnostic purposes;
No immunomodulatory or immunosuppressive therapy for at least 3 months;
Free, informed and written consent signed by the patient.

Regarding non-MS patients with neurological inflammatory disease:

Adult (age greater than or equal to 18 years) of both sexes;
Patient with non-MS neurological inflammatory disease (examples: meningitis, neurolupus, neurosarcoidosis...);
Patients with PL for diagnostic or surveillance purposes;
No immunomodulatory or immunosuppressive therapy for at least 3 months;
Free, informed and written consent signed by the patient.

Regarding healthy volunteers:

Adult (age greater than or equal to 18 years) of both sexes;
Free, informed and written consent signed by the volunteer.

Exclusion Criteria:

Regarding all patients:

Pregnancy;
Breastfeeding;
Treatment with corticotherapy in the last month;
Patient not affiliated to health insurance;
Persons major subject to legal protection (safeguard of justice, guardianship, tutorship), persons deprived of their liberty.

Regarding healthy volunteers:

Pregnancy;
Breastfeeding;
Not affiliated to social security;
Persons major subject to legal protection (safeguard of justice, guardianship, tutorship), persons deprived of their liberty.

Accepts Healthy Volunteers

Yes

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

18 Years

Maximum Age

Not provided

Standard Ages

AdultOlder Adult

Study Population

The population concerned is the same as the one participating in the ABCD-SEP study.

These patients gave their consent for the remaining biological samples to be used for ulterior research

Sampling Method

Non-Probability Sample

ID	Term
D020278	Demyelinating Autoimmune Diseases, CNS
D020274	Autoimmune Diseases of the Nervous System
D009422	Nervous System Diseases
D003711	Demyelinating Diseases