Hp129 Xenon Imaging and BOS in Lung Transplantation

Imaging and Understanding Bronchiolitis Obliterans Syndrome (BOS) in Lung Transplantation With Hyperpolarized 129Xenon MR Lung Imaging

The research is being conducted to develop new imaging methods that are sufficiently sensitive to allow for early diagnosis of BOS, a chronic allograft rejection affecting 50-60% of lung transplanted recipients who survive 5 years after transplant. Although lung transplantation has evolved into an effective therapeutic option for a large number of pediatric patients with end-stage pulmonary disease, long-term survival after lung transplantation is far worse than after the transplantation of other solid organs. This research may improve patient outcomes through earlier diagnosis of changes leading to BOS by obtaining image guided research biopsies of transplanted lung. Biopsies may be used for future research of ex vivo biomarkers of BOS and in the development of treatments through future clinical trials.

Study Overview

• Status: Completed
• Conditions: Bronchiolitis Obliterans
• Intervention / Treatment: Drug: Hp 129Xenon

Detailed Description

This protocol aims to

• Develop new imaging methods that are sufficiently sensitive to allow early diagnosis of BOS.
• Improve patient treatment outcomes through earlier diagnosis of changes leading to BOS by obtaining image guided biopsies of transplanted lung.
• Provide image guided biopsies for use in future research of ex vivo biomarkers of BOS and in the development of treatments through future clinical trials.

The study will achieve these aims through a prospective, non-randomized, longitudinal, observational study that will recruit about 5 subjects a year for 5 years. The study will follow these post lung transplant patients at 6 months and 1 year with 129Xe MRI (Hyperpolarized 129Xenon Magnetic Resonance Imaging) and image guided bronchial biopsies to detect early BOS and to better understand BO disease progression. The biopsies will provide future research for rapid determination of cellular and molecular mechanisms that lead to BOS and to facilitate identification and validation of translatable pharmaceutical targets.

• Study Type: Interventional
• Enrollment (Actual): 3
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• United States
  • Ohio
    • Cincinnati, Ohio, United States, 45229
      • Cincinnati Children's Hospital Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 6 years and older (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Lung Transplantation within the last 10 years or being assessed for possible lung transplantation.
• Participant must be able to hold their breath for up to 16 seconds.

Exclusion Criteria:

• Standard MRI exclusion criteria
• Bleeding disorders
• Participant is claustrophobic or otherwise unable to tolerate the imaging
• Pregnancy or positive pregnancy test
• Symptoms of respiratory infection within the past two weeks.
• Baseline oximetry at MRI visit of less than 95% on room air or less than 95% on a previously prescribed dosage of oxygen delivered by nasal cannula.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Hp 129Xenon; Participants will inhale up to 4 doses of Hp129Xenon; each dose will be no more than 1 liter.	Drug: Hp 129Xenon; 129 Xenon is a noble gas with no taste or smell. It will be made slightly magnetic (also called hyperpolarizing) and then inhaled into the lungs to provide better pictures of the lungs during MRI.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Capture 129Xe and proton MRI Images for clinician assessment	Capture HP 129Xe and 1H MR images for clinician review for regional ventilation defects in post-transplant BOS patients during routine clinical visits	6 months post transplant

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Capture 129Xe and proton MRI Images for clinician assessment	Capture HP 129Xe and 1H MR images for clinician review for regional ventilation defects in post-transplant BOS patients during routine clinical visits	12 months post transplant

Collaborators and Investigators

• Sponsor: Children's Hospital Medical Center, Cincinnati
• Investigators: Principal Investigator: Jason Woods, PhD, Children's Hospital Medical Center, Cincinnati

Study record dates

Study Major Dates

• Study Start (Actual): September 9, 2020
• Primary Completion (Actual): May 28, 2024
• Study Completion (Actual): May 28, 2024

Study Registration Dates

• First Submitted: October 4, 2017
• First Submitted That Met QC Criteria: July 20, 2018
• First Posted (Actual): July 27, 2018

Study Record Updates

• Last Update Posted (Estimated): October 7, 2025
• Last Update Submitted That Met QC Criteria: October 2, 2025
• Last Verified: September 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Respiratory Tract Diseases; Lung Diseases; Bronchial Diseases; Lung Diseases, Obstructive; Bronchiolitis; Bronchitis; Bronchiolitis Obliterans; Physiological Effects of Drugs; Central Nervous System Depressants; Anesthetics, General; Anesthetics; Anesthetics, Inhalation; Xenon
• Other Study ID Numbers: 2017-4120

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No