Clinical trial Recruiting at 1 site Interventional Ages 18 to 99

Comparing biopsy methods for lung transplant rejection diagnosis

Official title: A Prospective, Randomized Clinical Trial to Evaluate the Feasibility of Miniature Cryoprobe Biopsy to Detect Acute and Chronic Lung Transplant Rejection in Lung Transplant Recipients

Run by Mayo Clinic · NCT06824402 · Data updated 2026-11-12

This study tests which of two methods for taking lung tissue samples works better for diagnosing rejection in lung transplant patients.

Quick facts

Study typeInterventional
Ages18 Years to 99 Years
SexAll
Enrollment100 (estimated)
SponsorMayo Clinic
Academic / other
Locations1 site (Rochester, Minnesota)
StatusRecruiting
StartedFebruary 17, 2025
Main results expectedSeptember 30, 2026
Study endsSeptember 30, 2027
Registry record updatedMay 1, 2026
Trial IDNCT06824402 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are lung transplant recipients over 18 years old who require a post-transplant biopsy for routine surveillance.

Probably not a fit

Patients with bleeding disorders or those currently on anticoagulation therapy may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the effectiveness of two biopsy collection methods, a 1.1 mm cryoprobe and biopsy forceps, in diagnosing lung transplant rejection. Participants will be randomly assigned to receive one of the two methods during their scheduled bronchoscopy. The study will assess the quality of tissue samples, the adequacy of tissue collected, and the procedural time required for each method. Additionally, pathologists will evaluate the samples to determine which method provides the most reliable results for detecting rejection.

Why it matters

Potential benefit: If successful, this study could lead to improved diagnostic accuracy for lung transplant rejection, enhancing patient management.

How similar studies have gone: Other studies have explored various biopsy techniques in transplant settings, but this specific comparison of cryoprobe versus forceps is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* Male and female lung transplant recipients age \>18 at the time of informed consent
* Patients clinically meet indication for post-transplant lung biopsy or planned routine surveillance and have been scheduled for bronchoscopy with transbronchial biopsy.
* Be willing and able to sign the informed consent.

Exclusion Criteria

* Patients with known bleeding diathesis
* Platelet count \<50,000 per μL within 14 days of the biopsy procedure
* Current use of systemic anticoagulation or antiplatelet therapy without the ability to hold therapy for the recommended amount of time prior to an invasive procedure (aspirin monotherapy is acceptable)
* Inability or unwillingness to give informed consent or study procedures
* Pregnant or nursing females, or females who intend to become pregnant
* Females of child-bearing potential who decline a pregnancy test prior to enrollment
* If an investigator does not feel that this study is in the subject's best interest or would be a good fit for the study.
* International Normalized Ratio (INR) \>1.5
* Do Not Resuscitate (DNR) status
* Do Not Intubate (DNI) status
* Single lung transplant recipients

Where it's running

  • Mayo Clinic in Rochester
    Rochester, Minnesota, United States
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.