ClinicalTrials.gg
RecruitingNCT07258784Updated Dec 2, 2025

RNA Sequencing of Discarded Tracheal Stenosis Tissue to Characterize Cellular and Molecular Pathogenesis

An observational study in Tracheal Stenosis and Subglottic Stenosis, sponsored by University of Maryland, Baltimore. Recruiting at 1 site in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-12-02.

Sponsored by University of Maryland, Baltimore · Observational

From the registry’s dates

  • Started Sep 2025; still recruiting 1 year 2 months later.
Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
10
Ages
18 Years to 80 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 11 studies in Tracheal Stenosis with a site in United States — 7 open to participants now, 7 under way, none of them phase 3. Tracheal Stenosis · United States.

Started
2025
with 1 other
Observational
5 of 11
3 open now
Registered
10th of 11
by date
Lead sponsor
2 of 11
University of Maryland, Baltimore

Among the 11 studies in Tracheal Stenosis with a site in United States, this one is one of 2 that started in 2025, is one of 5 observational ones, and was the 10th registered.

By phase

11 studies; the count open now beside each. This study's row is marked.

Observationalthis study5 · 3 open
No phase3 · 2 open
Phase 12 · 1 open
Phase 21 · 1 open

By the year they started

First in 2008; this study’s year is marked. 2 started in 2025.

What they test

Size and results

Median enrollment 28 across the 6 interventional studies, 100 across the 5 observational. Of the 4 that completed or were terminated, 1 (25%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 11 studies in Tracheal Stenosis with a site in United States, or all of them as a file.
02

Study summary

Benign tracheal stenosis is a rare but potentially life-threatening condition, typically resulting from fibroinflammatory scarring. It can be secondary to iatrogenic etiologies such as intubation or tracheostomy , as well as autoimmune diseases and being idiopathic. Patients typically undergoes endoscopic or surgical interventions to open up the airways. This project will analyze resected or biopsied tissue from patients with benign tracheal stenosis to define disease-specific RNA expression profiles.

03

Conditions studied

  • Tracheal Stenosis
  • Subglottic Stenosis

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04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

patients with benign tracheal stenosis, including idiopathic, iatrogenic, autoimmune.

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

  • Patients with benign tracheal stenosis

Exclusion criteria

Exclusion Criteria:

  • . active infection
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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
10 participants (estimated)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • patients with benign tracheal stenosis undergoing either endoscopic or surgical treatment

    Procedure: Biopsy or surgery

Interventions

  • ProcedureBiopsy or surgery

    The tissue will be obtained from biopsy or surgical resection. All the "intervention" will be performed for clinical needs. The tissue used in the study will be considered as discarded tissue

06

What researchers measure

Primary outcomes

  1. RNA profile

    The diseased mucosa will show a increased fibrosis and inflammation profile compared with that from normal mucosa

    Time frame: 1 year

07

Study locations

1 of 1 sites recruiting
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

Started Sep 2025 (actual). Primary completion is estimated for Sep 2026, 11 months after the start.

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

Registered
Nov 20, 2025
First posted
Dec 2, 2025
StartActual
Sep 11, 2025
Primary completionEst.
Sep 10, 2026
CompletionEst.
Dec 31, 2026
Last update
Dec 2, 2025
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 Dec 2, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07258784
Responsible party
Chenchen Zhang (Assistant professor, University of Maryland, Baltimore) — Principal investigator
First posted
Dec 2, 2025
Start date
Sep 11, 2025
Primary completion
Sep 10, 2026 (estimated)
Completion
Dec 31, 2026 (estimated)
Last update
Dec 2, 2025

Study contacts

Chenchen Zhang, MD
Contact
chenchen.zhang@som.umaryland.edu
14103288141

Oversight

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

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