Immunologic Markers for the Differential Diagnosis Between Uveitis-TBC and Uveitis-SARC (TBC-SARC) (TBC-SARC)

June 6, 2025 updated by: Azienda USL Reggio Emilia - IRCCS

Observational Study: Definition of Immunologic Markers for the Differential Diagnosis Between Uveitis From Supposed Tuberculous Etiology and Sarcoidosis Uveitis

Today there are no tests that allow to make a precise differential diagnosis between uveitis from presumed tuberculous origin and uveitis by sarcoidosis. Therefore, with this study, investigators aim to identify, in the aqueous humor and in the blood of participants (patients that suffering from one of these two forms of uveitis) the presence of immunologic markers that distinguish between uveitis of tuberculous etiology and uveitis by sarcoidosis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Both tuberculosis and sarcoidosis are chronic, multi-systemic and granulomatous pathologies that have very similar pulmonary and extra-pulmonary manifestations, and even in the case of ocular involvement it has been shown that many features of intraocular TB can also be found in participants with ocular sarcoidosis.

In this monocentric observational study investigators are asking to the participants with granulomatous uveitis, in which a tuberculosis or sarcoidosis origin is suspected and who will have undergo paracentesis of the anterior chamber, to grant part of the aqueous humor and a blood sample for this study.

The collected samples will be analyzed as follow:

  1. Determination of the concentration of various cytokines, chemokines and growth factors in aqueous humor and in the plasma.
  2. Analysis of the mononuclear cells ( T helper lymphocytes CD3+ (CD3 is the acronym of cluster of differentiation 3: a glycoprotein found on the surface of immune cells) and CD4+ ((CD4 is the acronym of cluster of differentiation 4), T cytotoxic lymphocytes CD3+ CD8+ (CD8 is the acronym of cluster of differentiation 8) , B lymphocytes CD19+ (CD19 is the acronym of cluster of differentiation 19), Natural killer lymphocytes CD56+ (CD56 is the acronym of cluster of differentiation 56) and CD3- and monocytes CD14+ (CD14 is the acronym of cluster of differentiation 14) present in the aqueous humor by cytofluorimetry.
  3. Evaluation of the presence of anti-human HSP70 antibodies in plasma samples by Western blot immunoprecipitation assays.
  4. Whenever possible (adequate number of cells), in vitro stimulation of mononuclear cells in aqueous humor with epitopes of tuberculosis mycobacterium antigens and the analysis of cytokines production in the supernatants.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
31

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Italy
      • Reggio Emilia, Italy, 42123
        • IRCCS/AUSL Reggio Emilia Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The population will be composed of patients who come at the Simple Dipartiental Structure of Ocular Immunology of the Reggio Emilia Hospital with diagnosis of granulomatous uveiti and to whom are diagnosed a uveitis of tuberculous etiology or uveitis of suspect sarcoidosis or uveitis of undifferentiated origin (tuberculosis/sarcoidosis).

Description

Inclusion Criteria:

  • Patients with diagnosis of uveitis of tuberculous etiology or patients with diagnosis of uveitis of suspect sarcoidosis or patients with diagnosis of uveitis of undifferentiated origin (tuberculosis/sarcoidosis)

Exclusion Criteria:

  • Patients suffering from non-granulomatous uveitis.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
uveitis of tuberculous etiology
Analysis of aqueous humor and plasma samples: The patients with diagnosis of uveitis of tuberculous etiology, undergone to paracentesis of anterior chamber, will can able to grant their aqueous humor and a sample of venous blood to the study of immunological markers to distinguish between uveitis of tuberculous etiology from uveitis by sarcoidosis through the analysis of the aqueous humor and the analysis of the plasma samples.
Diagnostic test: Analysis of aqueous humor and plasma samples

The collected samples will be analyzed as follow:

  1. Determination of the concentration of various cytokines, chemokines and groeth factors in aqueous humor and in the plasma.
  2. Analysis of the mononuclear cells ( T helper lymphocytes CD3+ and CD4+, T cytotoxic lymphocytes CD3+ CD8+, B lymphocytes CD19+, Natural killer lymphocytes CD56+ and CD3- and monocytes CD14+) present in the aqueous humor by cytofluorimetry.
  3. Evaluation of the presence of anti-human HSP70 antibodies in plasma samples by Western blot immunoprecipitation assays.
  4. Whenever possible (adequate number of cells), in vitro stimulation of mononuclear cells presence in aqueous humor with epitopes from tuberculosis mycobacterium antigens and the analysis of cytokines production in the supernatants.
uveitis of suspect sarcoidosis
Analysis of aqueous humor and plasma samples:The patients with diagnosis of uveitis of suspect sarcoidosis, undergone to paracentesis of anterior chamber, will can able to grant their aqueous humor and a sample of venous blood to the study of immunological markers to distinguish between uveitis of tuberculous etiology from uveitis by sarcoidosis through the analysis of the aqueous humor and the analysis of the plasma samples.
Diagnostic test: Analysis of aqueous humor and plasma samples

The collected samples will be analyzed as follow:

  1. Determination of the concentration of various cytokines, chemokines and groeth factors in aqueous humor and in the plasma.
  2. Analysis of the mononuclear cells ( T helper lymphocytes CD3+ and CD4+, T cytotoxic lymphocytes CD3+ CD8+, B lymphocytes CD19+, Natural killer lymphocytes CD56+ and CD3- and monocytes CD14+) present in the aqueous humor by cytofluorimetry.
  3. Evaluation of the presence of anti-human HSP70 antibodies in plasma samples by Western blot immunoprecipitation assays.
  4. Whenever possible (adequate number of cells), in vitro stimulation of mononuclear cells presence in aqueous humor with epitopes from tuberculosis mycobacterium antigens and the analysis of cytokines production in the supernatants.
uveitis of undifferentiated origin
Analysis of aqueous humor and plasma samples:The patients with diagnosis of uveitis of undifferentiated origin (tuberculosis/sarcoidosis), undergone to paracentesis of anterior chamber, will can able to grant their aqueous humor and a sample of venous blood to the study of immunological markers to distinguish between uveitis of tuberculous etiology from uveitis by sarcoidosis through the analysis of the aqueous humor and the analysis of the plasma samples.
Diagnostic test: Analysis of aqueous humor and plasma samples

The collected samples will be analyzed as follow:

  1. Determination of the concentration of various cytokines, chemokines and groeth factors in aqueous humor and in the plasma.
  2. Analysis of the mononuclear cells ( T helper lymphocytes CD3+ and CD4+, T cytotoxic lymphocytes CD3+ CD8+, B lymphocytes CD19+, Natural killer lymphocytes CD56+ and CD3- and monocytes CD14+) present in the aqueous humor by cytofluorimetry.
  3. Evaluation of the presence of anti-human HSP70 antibodies in plasma samples by Western blot immunoprecipitation assays.
  4. Whenever possible (adequate number of cells), in vitro stimulation of mononuclear cells presence in aqueous humor with epitopes from tuberculosis mycobacterium antigens and the analysis of cytokines production in the supernatants.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Identify, in the aqueous humor and in the blood of patients suffering from granulomatous uveitis the presence of immunologic markers that distinguish between uveitis of tuberculous etiology and uveitis by sarcoidosis
Time Frame: 3 days
The statistical analysis will based on the use of non parametric test between Group (Mann Whitney)
3 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Azienda USL Reggio Emilia - IRCCS

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Luca Cimino, IRCCS/AUSL Reggio Emilia

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 3, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 15, 2019

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 30, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 15, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 15, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 17, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 11, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 6, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2017/0103969

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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