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Enrolling by invitationNCT07240259Updated Aug 17, 2026

Feasibility of Tracheobronchial Reconstruction Using Allogenic Aortic Patch in Children

An interventional study of Cryopreserved aorta in Trachea Diseases, Tracheal Stenosis and Tuberculosis; Tracheitis, sponsored by National Taiwan University Hospital. Enrolling by invitation at 1 site in Taiwan. Open to participants aged 0 Years to 18 Years. Per ClinicalTrials.gov, last updated 2026-08-17.

Primary conditionTracheal StenosisRegistry: Tracheal DiseasesReclassifiedWhy we changed it
Registry
Tracheal Diseases — the first condition term the registry derived for this study.
ClinicalTrials.gg
Tracheal Stenosis
Why
  1. The study's listed conditions name Tracheal Stenosis, a narrower term within Tracheal Diseases.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by National Taiwan University Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
5
Allocation
Not applicable
Ages
0 Years to 18 Years
Sex
All
01

Study summary

Feasibility and safety of repairing tracheal and bronchial defects in infants and children using cryopreserved donor aortic patches.

Read the detailed description

This trial plans to use cryopreserved donor aortic tissue patches to repair and treat pediatric patients with end-stage, life-threatening or severely disabling tracheal diseases who have not responded to conventional conservative therapies or lack sufficient native tracheal tissue for tracheal defect reconstruction.

02

Conditions studied

  • Trachea Diseases
  • Tracheal Stenosis
  • Tuberculosis; Tracheitis
  • Airway Disease
  • Tracheomalacia
  • Tracheal Stenosis Following Tracheostomy
  • Tracheal Reconstruction Surgery

Browse trials for

Keywords

  • tracheomalacia
  • bronchial reconstruction
  • cryopreserved aorta
  • tracheal reconstruction
  • tracheal stenosis
03

In context

Tracheal Stenosis Reclassified

42 studies on the registry are indexed under Tracheal Stenosis; 11 are open to participants now.

This study's planned enrollment of 5 is below the median of 22 across 24 interventional studies indexed under Tracheal Stenosis.

Browse Tracheal Stenosis studies →

Lead sponsor

National Taiwan University Hospital is the lead sponsor of 2,615 studies on the registry; 576 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 2 (18%) have results posted.

Compared within Tracheal Stenosis, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Tracheal Diseases. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
0 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

Meeting any of the following conditions, and being unsuitable for standard end-to-end tracheal anastomosis or lacking sufficient native tracheal tissue for defect reconstruction:

  1. Congenital tracheal malformations: including congenital tracheomalacia, congenital tracheobronchial anomalies, complete tracheal rings, etc., with severe clinical respiratory symptoms and recommended for treatment after evaluation.
  2. Acquired tracheal stenosis: including tracheal narrowing caused by disease, endotracheal intubation, or postoperative scar formation, with severe clinical respiratory symptoms and recommended for treatment after evaluation.
  3. Tracheal injury or tissue loss due to trauma or burns requiring surgical repair.
  4. Tracheal tumors: reconstruction of tracheal tissue after resection of benign or malignant tumors.
  5. The term "severe clinical respiratory symptoms" includes:

    1. Dependence on mechanical ventilation for more than 1 month due to airway narrowing or defect, with inability to wean.
    2. Airway stenosis exceeding 50% (confirmed by bronchoscopy or CT imaging), accompanied by persistent stridor, inspiratory dyspnea, or suprasternal/substernal retractions, causing impairment of daily activities or feeding difficulties.
    3. Unilateral or bilateral lung atelectasis persisting for more than 1 month due to tracheal or bronchial stenosis, with no sign of recovery.
    4. Recurrent post-obstructive pneumonia (≥3 episodes) in one or both lungs caused by tracheal or bronchial stenosis, requiring hospitalization for treatment.

Exclusion criteria

Exclusion Criteria:

  1. Inability to obtain legal from the lawful guardian.
  2. Locally invasive tracheal tumors that cannot be completely resected surgically.
  3. Malignant solid tumors with distant that cannot be completely resected surgically or controlled with medication.
  4. Presence of severe immunodeficiency (e.g., congenital immunodeficiency, infection, ongoing chemotherapy, or recovery period after bone marrow transplantation).
  5. Presence of major congenital diseases or chromosomal abnormalities (e.g., Trisomy 13, Trisomy 18) with extremely poor prognosis as assessed clinically.
  6. End-stage organ failure (e.g., persistent multiple organ failure, irreversible cardiopulmonary failure, or brain death).
Terms in these criteria, in plain language(3)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
5 participants (estimated)

Study arms

  • Experimental
    Cryopreserved aorta

    After resection of tracheal or bronchial lesion, reconstruct the airway with cryopreserved aortic allograft.

    Procedure: Cryopreserved aorta

Interventions

  • ProcedureCryopreserved aorta

    After resection of the tracheal or bronchial lesion with standard surgical techniques, the airway gap is reconstructed with a segment of human cryopreserved (-80 celsius degree) aortic allograft, which was not matched by the ABO and leukocyte antigen systems. The anastomosis is performed with standard technique for airway anastomosis.

06

What researchers measure

Primary outcomes

  1. 90-day Mortality

    Survival status of patients within 90 days after surgery. This primary endpoint evaluates patient mortality, as patients undergoing this type of surgery often have a high short-term risk of death.

    Time frame: Postoperative 90 days

Secondary outcomes

  1. Anastomotic Leakage

    Incidence of anastomotic leakage at the tracheal anastomosis site.

    Time frame: Within 90 days postoperatively

  2. Pneumonia

    Incidence of postoperative pneumonia.

    Time frame: Within 90 days postoperatively

  3. Difficult Extubation

    Occurrence of difficulties in extubation after surgery.

    Time frame: Within 90 days postoperatively

  4. Granulation Tissue Obstruction

    Incidence of airway obstruction due to granulation tissue formation.

    Time frame: Within 90 days postoperatively

  5. Stenosis Caused by Scar Fibrosis and Related Complications

    Occurrence of airway stenosis due to scar fibrosis or other related complications.

    Time frame: Within 90 days postoperatively

Other outcomes

  1. Long-term Clinical Follow-up

    Patients will undergo long-term follow-up including medical history review, physical examination, and imaging studies as clinically indicated (including but not limited to X-ray, CT scan, and bronchoscopy) to monitor long-term airway status and overall health.

    Time frame: At least 1 year postoperatively; infants and young children followed until at least puberty

07

Study locations

1 site
  • Taiwan National Taiwan University Hospital
    Taipei, Taiwan
08

References and documents

Publications

  • Tsou KC, Hung WT, Ju YT, Liao HC, Hsu HH, Chen JS. Application of aortic allograft in trachea transplantation. J Formos Med Assoc. 2023 Sep;122(9):940-946. doi: 10.1016/j.jfma.2023.03.006. Epub 2023 Mar 29. PubMed 37002174 ↗
  • Lu CW, Liao HC, Tsou KC, Hung WT, Huang PM, Hsu HH, Chen JS. Cryopreserved aortic graft patch repair of traumatic tracheal rupture defect: A case report. JTCVS Tech. 2024 Aug 17;27:182-184. doi: 10.1016/j.xjtc.2024.07.023. eCollection 2024 Oct. No abstract available. PubMed 39478918 ↗
  • Hung WT, Liao HC, Hsu HH, Chen JS. Stented cryopreserved aortic allograft for reconstruction of long-segment post-tuberculosis tracheal stenosis. J Formos Med Assoc. 2024 Jul;123(7):818-820. doi: 10.1016/j.jfma.2024.03.006. Epub 2024 Mar 16. PubMed 38494361 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07240259
Responsible party
Sponsor
First posted
Nov 20, 2025
Start date
Dec 1, 2026 (estimated)
Primary completion
Jan 31, 2028 (estimated)
Completion
Jan 31, 2028 (estimated)
Last update
Aug 17, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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