Clinical trial NCT02812290: Diagnostic and Therapeutic Applications of Microarrays in Lung Transplantation
Official title: Multi-Centric Observational Study to Analyze the Diagnostic Molecular Features in the Clinical Setting of Lung Allograft Biopsies
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Lung Transplant Rejection
Keywords: antibody mediated rejection
T cell mediated rejection
Lead sponsor: University of Alberta
Sponsor class: OTHER
First posted: 2016-06-24
Enrollment: 700
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: Patients with functioning lung transplant biopsied to determine their graft dysfunction or to confirm good function as per standard of care.

Brief summary: Objective: To evaluate the potential impact of molecular phenotyping of transbronchial biopsies in lung transplant recipients with allograft dysfunction, and the potential for developing a safer endobronchial mucosal biopsy format.

Detailed description: The current standard for biopsy-based diagnoses of dysfunction of lung transplants is the International Society of Heart and Lung Transplantation (ISHLT) classification applied to transbronchial biopsies, which represents an arbitrary international consensus. Recent data-driven approaches using molecular and conventional technologies indicate that this system produces frequently incorrect diagnoses with potential harm to patients due to inappropriate treatment. especially in relationship to the correct diagnosis of chronic lung allograft dysfunction is a pressing need. To address this unmet need and improve diagnostics in the area of organ transplantation, the Alberta Transplant Applied Genomics Centre (ATAGC, University of Alberta) has developed a new diagnostic system - the Molecular Microscope® Diagnostic System (MMDx) that interprets biopsies in terms of their molecular phenotype. The MMDx, developed first in kidney transplant biopsies with thoroughly established phenotypes, will now be adapted to lung transplant transbronchial biopsies (TBBs). Microarray analysis of lung allograft biopsy specimens will be compared to conventional allograft phenotyping, including clinical, physiologic, radiographic and histological assessment. The present study will use the MMDx™ system to assess and report TBBs, and validate and refine this system in 300 unselected prospectively collected lung TBBs. A subset of the study will examine the third bifurcation mucosal endobronchial biopsies (3BMBs) paired with TBBs from 50 patients to see if the safer 3BMBs can substitute for the TBB to be used by MMDx™. Due to a considerable interest and support from participating Centers, the study is further extended and collected 1094 TBBs and 930 3BMBs from 930 patients. This this is the extension of the INTERLUNG study - INTERLUNGEX.

Eligibility criteria: Inclusion Criteria:

* All lung transplant recipients undergoing a biopsy as determined by their surgeon or physician.

Exclusion Criteria:

* Patients who declined participation or unable to give informed consent.

Primary outcomes:
measure: Report the molecular scores (probability) of lung transplant disease in a reference set of 600 transbronchial biopsies.
timeFrame: two years
measure: Report the molecular diagnoses of the MMDx-TBB system
timeFrame: two years
Secondary outcomes:
measure: Report the molecular scores (probability) of lung transplant disease in a reference set of 600 mucosal endobronchial biopsies.
timeFrame: two years
measure: Report the molecular diagnoses of the MMDx-3BMB system
timeFrame: two years
measure: Report the molecular changes over time in medically indicated follow-up biopsies
timeFrame: two years
Other outcomes:
Locations:
city: Baltimore
country: United States
facility: University of Maryland School of Medicine
state: Maryland
city: Saint Louis
country: United States
facility: Division of Pulmonary and Critical Care, Washington University School of Medicine
state: Missouri
city: San Antonio
country: United States
facility: University of Texas at San Antonio
state: Texas
city: Melbourne
country: Australia
facility: The Alfred Hospital, Monash University
city: Vienna
country: Austria
facility: Department of Thoracic Surgery, Medical University of Vienna
city: Edmonton
country: Canada
facility: Alberta Transplant Applied Genomics Centre, University of Alberta
state: Alberta
city: Edmonton
country: Canada
facility: Department of Medicine, University of Alberta
state: Alberta
city: Toronto
country: Canada
facility: University Health Network, Toronto General Hospital
state: Ontario
city: Prague
country: Czechia
facility: Charles University/Hospital Motol
city: Szczecin
country: Poland
facility: Thoracic Surgery Transplant Clinic
Study officials:
affiliation: Faculty of Medicine and Dentistry, University of Alberta
name: Philip F Halloran, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Madill-Thomsen KS, Halloran PF. Precision diagnostics in transplanted organs using microarray-assessed gene expression: concepts and technical methods of the Molecular Microscope(R) Diagnostic System (MMDx). Clin Sci (Lond). 2024 Jun 5;138(11):663-685. doi: 10.1042/CS20220530.
citation: Halloran KM, Parkes MD, Chang J, Timofte IL, Snell GI, Westall GP, Hachem R, Kreisel D, Trulock E, Roux A, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Halloran PF. Molecular assessment of rejection and injury in lung transplant biopsies. J Heart Lung Transplant. 2019 May;38(5):504-513. doi: 10.1016/j.healun.2019.01.1317. Epub 2019 Feb 6.
citation: Halloran K, Parkes MD, Timofte I, Snell G, Westall G, Havlin J, Lischke R, Hachem R, Kreisel D, Levine D, Kubisa B, Piotrowska M, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Hirji A, Weinkauf J, Halloran PF. Molecular T-cell-mediated rejection in transbronchial and mucosal lung transplant biopsies is associated with future risk of graft loss. J Heart Lung Transplant. 2020 Dec;39(12):1327-1337. doi: 10.1016/j.healun.2020.08.013. Epub 2020 Aug 26.
citation: Halloran K, Parkes MD, Timofte IL, Snell GI, Westall GP, Hachem R, Kreisel D, Levine D, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Hirji A, Weinkauf J, Halloran PF. Molecular phenotyping of rejection-related changes in mucosal biopsies from lung transplants. Am J Transplant. 2020 Apr;20(4):954-966. doi: 10.1111/ajt.15685. Epub 2019 Dec 1.
citation: Parkes MD, Halloran K, Hirji A, Pon S, Weinkauf J, Timofte IL, Snell GI, Westall GP, Havlin J, Lischke R, Zajacova A, Hachem R, Kreisel D, Levine D, Kubisa B, Piotrowska M, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Halloran PF. Transcripts associated with chronic lung allograft dysfunction in transbronchial biopsies of lung transplants. Am J Transplant. 2022 Apr;22(4):1054-1072. doi: 10.1111/ajt.16895. Epub 2021 Dec 16.
citation: Halloran K, Mackova M, Parkes MD, Hirji A, Weinkauf J, Timofte IL, Snell GI, Westall GP, Lischke R, Zajacova A, Havlin J, Hachem R, Kreisel D, Levine D, Kubisa B, Piotrowska M, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Halloran PF. The molecular features of chronic lung allograft dysfunction in lung transplant airway mucosa. J Heart Lung Transplant. 2022 Dec;41(12):1689-1699. doi: 10.1016/j.healun.2022.08.014. Epub 2022 Aug 27.
citation: Gauthier PT, Mackova M, Hirji A, Weinkauf J, Timofte IL, Snell GI, Westall GP, Havlin J, Lischke R, Zajacova A, Simonek J, Hachem R, Kreisel D, Levine D, Kubisa B, Piotrowska M, Juvet S, Keshavjee S, Jaksch P, Klepetko W, Halloran K, Halloran PF. Defining a natural killer cell-enriched molecular rejection-like state in lung transplant transbronchial biopsies. Am J Transplant. 2023 Dec;23(12):1922-1938. doi: 10.1016/j.ajt.2023.06.003. Epub 2023 Jun 7.
citation: Halloran PF. Integrating molecular and histologic interpretation of transplant biopsies. Clin Transplant. 2021 Apr;35(4):e14244. doi: 10.1111/ctr.14244. Epub 2021 Feb 17. No abstract available.