ClinicalTrials.gg
Not yet recruitingNCT06071585Updated Oct 6, 2023

Monocentric Retrospective Observational Study for Validation of Meta-analysis of the Metatrascryptome and Transcriptome of Eosynophyl Esophagitis

An observational study in Eosinophilic Esophagitis, sponsored by IRCCS San Raffaele. Not yet recruiting at 1 site in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-10-06.

Sponsored by IRCCS San Raffaele · Observational

From the registry’s dates

  • Primary completion was expected by Nov 2024, 2 years ago, but the record still lists the study as not yet recruiting.

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Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
105
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 21 studies in Eosinophilic Esophagitis with a site in Italy — 8 open to participants now, 11 under way, 1 of them phase 3. Eosinophilic Esophagitis · Italy.

Planned enrollment
7th of 12
105 · median 153
Started
2023
with 4 others
Observational
12 of 21
8 open now
Primary completion
2024-11
later than 0 of 10 live
Registered
15th of 21
by date
Lead sponsor
5 of 21
IRCCS San Raffaele

Among the 21 studies in Eosinophilic Esophagitis with a site in Italy, this one is the 7th largest by planned enrollment of the 12 observational ones that give a count, is one of 5 that started in 2023, is one of 12 observational ones, reaches primary completion later than 0 of the 10 other live ones, and was the 15th registered.

Eosinophilic Esophagitis

235 studies on the registry are indexed under Eosinophilic Esophagitis; 53 are open to participants now.

Browse Eosinophilic Esophagitis studies →

Open to participants now

8 of the 21 studies in Eosinophilic Esophagitis with a site in Italy are open now. Recruiting first, the newest first:

2 more — sign in →

All 8 open studies →

A study can be open while its sites in Italy have not opened yet or have stopped. Only those recruiting at a site in Italy →

Who these studies take

Of the 42 Eosinophilic Esophagitis studies recruiting now, 12 (29%) set no upper age limit and 27 (64%) stop at 75 or younger; 27 take children under 18; 7 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 21 studies in Eosinophilic Esophagitis with a site in Italy, or all of them as a file.
02

Study summary

This is a retrospective monocentric observational study involving patients with Eosinophilic esophagitis (EoE), gastroesophageal reflux disease (GERD), and controls (patients without EoE and GERD). To validate the EoE-related markers obtained with the EoE TaMMA web app (such as CCL26, TBX5, NOX4, FGF7, CXCL14, ADAMTS5, PDGFRA, CXCL12, ACVRL1, POSTN, and LTBP4), we will stain and analyze EoE, GERD, and controls Formalin-fixed paraffin-embedded (FFPE) tissue samples already stored in the pathological laboratory of OSR. For this reason, this project will be accomplished thanks to the collaboration with prof.

Doglioni's team at OSR.

Read the detailed description

Eosinophilic esophagitis (EoE) is a chronic esophageal inflammatory disease, primarily activated by food antigens, with the concomitant accumulation of eosinophils within the esophageal mucosal layer where the Th2-response-specific interleukin (IL) 5 and IL13 play a key role during its pathogenesis. EoE positions as an uncommon disease, with a suggested genetic basis and a 3:1 male preponderance. Its incidence rate varies between 0.1 and 1.2 cases per 10,0009 and increases annually. EoE symptoms include difficulty with eating, failure to thrive, vomiting, chest and/or abdominal pain, dysphagia, and food impaction, histologically associated with esophageal linear furrows with loss of vascularity, mucosal rings, a small-caliber lumen, strictures, mucosal exudates, and, less commonly, polyps and ulcerations. The currently adopted therapies are mainly based on proton pump inhibition, topical administration of glucocorticoids, and changes in dietary habits. However, in most patients, eosinophilic esophagitis remains a chronic disease, and if treatment is stopped, inflammation ensues and symptoms recur. This may hamper the quality of life, including vitality and general health scores, and complications may develop. Therefore, the complete comprehension of the mechanisms occurring during EoE pathogenesis remains of paramount importance to implementing and improving the therapeutic lines of intervention, ameliorating the overall patients' wellness.

A straightforward and facilitated EoE clinical diagnosis is still missing, since EoE provokes in patients symptoms overlapping with other disease manifestations, such as gastroesophageal reflux disease (GERD), eosinophilic gastrointestinal disease, and achalasia. Along with the mucosal immunity alterations, the epithelial barrier function impairment does remain a hallmark of EoE, in terms of both increased permeability and antigen sensing and EoE TaMMA .

Indeed, at the mucosal level, EoE is featured by a striking pattern of dilated interepithelial spaces, with down-regulation of proteins associated with barrier function and adhesion molecules, in turn, modulated via an IL13-dependent mechanism. As a consequence, altered epithelial permeability can lead to a permissive environment that enhances antigen presentation, which in turn leads to persistent chronic inflammation.

Despite some anatomical and molecular characterizations employed as a kind of gold standard for the definition of the EoE pathogenesis, a meta-analysis of the molecular studies may improve the understanding of the physiopathology of the disease and define molecular markers helpful for a straightforward diagnosis of EoE has not been performed yet. We recently developed and released the Inflammatory Bowel Disease (IBD) Transcriptome and Metatranscriptome Meta-Analysis web app (IBD TaMMA, https://ibd-meta-analysis.herokuapp.com/), a complete survey of all public data sets generated for IBD-related studies. TaMMA has contributed to the field of omics data meta-analysis by providing an open source framework that will enable the community to easily access, query, and 'play' with the data through a user-friendly web application and offering an unprecedented opportunity to define new hypotheses and insights for better understanding the pathogenesis of IBD.

Considering the utility that IBD TaMMA has been increasingly showing over the last months, we developed a similar meta-analysis of EoE-related public data sets visualized in an interactive web app, the EoE TaMMA, that includes studies analyzing EoE, GERD and controls (without EoE and GERD). EoE-related phenotypes were confirmed throughout the web app. To further consolidate the platform, we are proposing the validation of EoE TaMMA results in an independent cohort of EoE and GERD patients, by taking advantage of the EoE and GERD.

03

Conditions studied

  • Eosinophilic Esophagitis
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

We will use FFPE samples derived from patients who, at the time of the endoscopic exam, have signed the informed consent form to authorize the use of their clinical data for scientific purposes.

We will validate the EoE TaMMA results (such as the upregulation of CCL26, TBX5, NOX4, FGF7, CXCL14, ADAMTS5, PDGFRA, CXCL12, ACVRL1, POSTN, and LTBP4 in EoE tissues by comparison with the GERD and the controls (without EoE and GERD)) by analyzing the EoE, GERD and controls FFPE samples already stored in the pathological laboratory.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

FFPE tissue samples patients who:

  • had previously undergone endoscopic -collection in the clinical unit of Gastroenterology and Digestive Endoscopy according to the clinical practice (from 31/07/2012 to 31/07/2022)
  • during that endoscopic biopsy-collection they already signed the attestation of will for using their clinical data for future scientific studies

Exclusion criteria

Exclusion Criteria:

FFPE tissues from patients who:

  • have not signed the attestation of will for authorized using the use of their clinical data for future scientific studies.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
105 participants (estimated)
Patient registry
No

Groups and cohorts

  • patients with Eosinophilic esophagitis (EoE)

    Other: Formalin-fixed Paraffin-embedded (FFPE) tissue samples analysis

  • patients with gastroesophageal reflux disease (GERD)

    Other: Formalin-fixed Paraffin-embedded (FFPE) tissue samples analysis

  • controls (patients without EoE e GERD)

    Other: Formalin-fixed Paraffin-embedded (FFPE) tissue samples analysis

Interventions

  • OtherFormalin-fixed Paraffin-embedded (FFPE) tissue samples analysis

    We will stain and analyze EoE, GERD, and controls Formalin-fixed paraffin-embedded (FFPE) tissue samples already stored in the pathological laboratory of OSR.

06

What researchers measure

Primary outcomes

  1. To evaluate the presence and the expression of several markers, including CCL26, TBX5, NOX4, FGF7, CXCL14, ADAMTS5, PDGFRA, CXCL12, ACVRL1, POSTN, and LTBP4 in FFPE tissue samples.

    The investigators will use FFPE samples derived from patients who, at the time of the endoscopic exam, have signed the informed consent form to authorize the use of their clinical data for scientific purposes. The investigators will stain FFPE tissue samples with specific immunohistochemical antibodies, quantifying the presence of these specific markers: CCL26, TBX5, NOX4, FGF7, CXCL14, ADAMTS5, PDGFRA,CXCL12, ACVRL1, POSTN, and LTBP4. In order to perform the standard staining procedure, first the tissue section has to be deparaffinized and then rehydrated before applying the primary antibody. Enzyme-conjugated secondary antibodies are then applied, and the specific staining can be visualized after adding the enzyme- specific substrate.

    Time frame: 1-12 months

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Nov 2023; primary completion for Nov 2024, 12 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 25, 2023
First posted
Oct 6, 2023
StartEst.
Nov 1, 2023
Primary completionEst.
Nov 1, 2024
CompletionEst.
Nov 1, 2024
Last update
Oct 6, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 6, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06071585
Lead sponsor
IRCCS San Raffaele
Responsible party
Silvio Danese (Director of Gastroenterology and Endoscopy Unit, IRCCS San Raffaele) — Principal investigator
First posted
Oct 6, 2023
Start date
Nov 1, 2023 (estimated)
Primary completion
Nov 1, 2024 (estimated)
Completion
Nov 1, 2024 (estimated)
Last update
Oct 6, 2023

Study contacts

Federica Ungaro
Contact
ungaro-federica@hsr.it
0226437864

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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