Alveoscopy, Endoscopic Confocal Microscopy and Lung Rejection, Parenchymal Lung Diseases in Vivo

NCT ID: NCT01033201

Last Updated: 2012-01-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

71 participants

Study Classification

OBSERVATIONAL

Study Start Date

2008-04-30

Study Completion Date

2011-03-31

Brief Summary

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Lung transplantation is indicated when end-stage lung diseases no longer respond to available standard therapy, making life expectancy short and associated with disability. Acute and chronic rejection are common complications following transplantation, indicating screening bronchoscopies and transbronchial biopsies at three month intervals the first two years, in addition to clinically indicated procedures when rejection or infection is suspected. Transbronchial biopsies carry associated risks (bleeding, pneumothorax). Chronic rejection is characterized by progressive obliteration of distal airways (Bronchiolitis Obliterans-BO-). BO requires open lung biopsy for diagnosis. Alternatively, a clinical surrogate (Bronchiolitis Obliterans Syndrome), characterized by decline in Forced Expired Volume in 1 second not explained by acute rejection or infection is used for diagnosis. The new technique of confocal endo-microscopy enables sub-surface visualization of tissue in vivo during bronchoscopic procedures using a probe-based confocal microscope, integrated to a standard endoscope. Bronchiolar and alveolar structures can be visualized at a cellular and nuclear level, and these images can be saved and reviewed. This new technology could potentially identify acute and chronic rejection, thus offering and alternative to transbronchial biopsies. We expect to describe a new alternative to diagnose acute and chronic rejection using confocal microscopy images obtained endoscopically, obviating complications of transbronchial biopsies.

Endoscopic confocal endomicroscopy can detect and classify common bronchiolar and alveolar pathological conditions in real time. Specifically, we hypothesize that confocal endomicroscopy images of bronchiolar and alveolar structures during standard bronchoscopy could help to recognize and classify the presence/absence of acute rejection and/or bronchiolitis obliterans syndrome in lung transplant recipients. This technology could also identify the histological characteristics lung diseases such as interstitial, obstructive or vascular end stage lung diseases, and thus lead to more efficient, safer and more accurate diagnosis of these lung conditions during routine bronchoscopies.

Detailed Description

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Conditions

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Lung Transplant

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Lung transplant

All lung transplant patients presenting for screening/surveillance and diagnostic bronchoscopies at Mayo Clinic Florida are eligible for participation.

Confocal imaging

Intervention Type OTHER

At the time of the standard of care bronchoscopy, confocal images will be obtained from each consented patient.

Interventions

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Confocal imaging

At the time of the standard of care bronchoscopy, confocal images will be obtained from each consented patient.

Intervention Type OTHER

Other Intervention Names

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AlveoloFlex Confocal Miniprobes Cellvizio-Lung system

Eligibility Criteria

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Inclusion Criteria

1. Age above 18 years
2. Any patient undergoing surveillance or clinically indicated bronchoscopies during or after lung transplantation
3. Any patient undergoing bronchoscopy prior lung transplant

Exclusion Criteria

1. Unwilling to consent
2. Unable to safely tolerate a bronchoscopic procedure
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Mayo Clinic

OTHER

Sponsor Role lead

Responsible Party

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Mayo Clinic Florida

Locations

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Mayo Clinic Florida

Jacksonville, Florida, United States

Site Status

Countries

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United States

References

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St Croix CM, Leelavanichkul K, Watkins SC. Intravital fluorescence microscopy in pulmonary research. Adv Drug Deliv Rev. 2006 Sep 15;58(7):834-40. doi: 10.1016/j.addr.2006.07.007. Epub 2006 Aug 11.

Reference Type BACKGROUND
PMID: 16996641 (View on PubMed)

Herth FJ, Eberhardt R, Ernst A. The future of bronchoscopy in diagnosing, staging and treatment of lung cancer. Respiration. 2006;73(4):399-409. doi: 10.1159/000093369.

Reference Type BACKGROUND
PMID: 16775411 (View on PubMed)

Trulock EP, Christie JD, Edwards LB, Boucek MM, Aurora P, Taylor DO, Dobbels F, Rahmel AO, Keck BM, Hertz MI. Registry of the International Society for Heart and Lung Transplantation: twenty-fourth official adult lung and heart-lung transplantation report-2007. J Heart Lung Transplant. 2007 Aug;26(8):782-95. doi: 10.1016/j.healun.2007.06.003. No abstract available.

Reference Type BACKGROUND
PMID: 17692782 (View on PubMed)

Moffatt SD, Demers P, Robbins RC, Doyle R, Wienacker A, Henig N, Theodore J, Reitz BA, Whyte RI. Lung transplantation: a decade of experience. J Heart Lung Transplant. 2005 Feb;24(2):145-51. doi: 10.1016/j.healun.2003.10.020.

Reference Type BACKGROUND
PMID: 15701428 (View on PubMed)

Sibley RK, Berry GJ, Tazelaar HD, Kraemer MR, Theodore J, Marshall SE, Billingham ME, Starnes VA. The role of transbronchial biopsies in the management of lung transplant recipients. J Heart Lung Transplant. 1993 Mar-Apr;12(2):308-24.

Reference Type BACKGROUND
PMID: 8476904 (View on PubMed)

Bowdish ME, Arcasoy SM, Wilt JS, Conte JV, Davis RD, Garrity ER, Hertz ML, Orens JB, Rosengard BR, Barr ML. Surrogate markers and risk factors for chronic lung allograft dysfunction. Am J Transplant. 2004 Jul;4(7):1171-8. doi: 10.1111/j.1600-6143.2004.00483.x.

Reference Type BACKGROUND
PMID: 15196078 (View on PubMed)

Colombat M, Groussard O, Lautrette A, Thabut G, Marrash-Chahla R, Brugiere O, Mal H, Leseche G, Fournier M, Degott C. Analysis of the different histologic lesions observed in transbronchial biopsy for the diagnosis of acute rejection. Clinicopathologic correlations during the first 6 months after lung transplantation. Hum Pathol. 2005 Apr;36(4):387-94. doi: 10.1016/j.humpath.2005.01.022.

Reference Type BACKGROUND
PMID: 15892000 (View on PubMed)

Khalifah AP, Hachem RR, Chakinala MM, Yusen RD, Aloush A, Patterson GA, Mohanakumar T, Trulock EP, Walter MJ. Minimal acute rejection after lung transplantation: a risk for bronchiolitis obliterans syndrome. Am J Transplant. 2005 Aug;5(8):2022-30. doi: 10.1111/j.1600-6143.2005.00953.x.

Reference Type BACKGROUND
PMID: 15996255 (View on PubMed)

Hachem RR, Yusen RD, Chakinala MM, Meyers BF, Lynch JP, Aloush AA, Patterson GA, Trulock EP. A randomized controlled trial of tacrolimus versus cyclosporine after lung transplantation. J Heart Lung Transplant. 2007 Oct;26(10):1012-8. doi: 10.1016/j.healun.2007.07.027.

Reference Type BACKGROUND
PMID: 17919621 (View on PubMed)

Tazelaar HD, Nilsson FN, Rinaldi M, Murtaugh P, McDougall JC, McGregor CG. The sensitivity of transbronchial biopsy for the diagnosis of acute lung rejection. J Thorac Cardiovasc Surg. 1993 Apr;105(4):674-8.

Reference Type BACKGROUND
PMID: 8469001 (View on PubMed)

Yousem SA, Berry GJ, Cagle PT, Chamberlain D, Husain AN, Hruban RH, Marchevsky A, Ohori NP, Ritter J, Stewart S, Tazelaar HD. Revision of the 1990 working formulation for the classification of pulmonary allograft rejection: Lung Rejection Study Group. J Heart Lung Transplant. 1996 Jan;15(1 Pt 1):1-15.

Reference Type BACKGROUND
PMID: 8820078 (View on PubMed)

Estenne M, Maurer JR, Boehler A, Egan JJ, Frost A, Hertz M, Mallory GB, Snell GI, Yousem S. Bronchiolitis obliterans syndrome 2001: an update of the diagnostic criteria. J Heart Lung Transplant. 2002 Mar;21(3):297-310. doi: 10.1016/s1053-2498(02)00398-4. No abstract available.

Reference Type BACKGROUND
PMID: 11897517 (View on PubMed)

Kiesslich R, Burg J, Vieth M, Gnaendiger J, Enders M, Delaney P, Polglase A, McLaren W, Janell D, Thomas S, Nafe B, Galle PR, Neurath MF. Confocal laser endoscopy for diagnosing intraepithelial neoplasias and colorectal cancer in vivo. Gastroenterology. 2004 Sep;127(3):706-13. doi: 10.1053/j.gastro.2004.06.050.

Reference Type BACKGROUND
PMID: 15362025 (View on PubMed)

Thiberville L, Moreno-Swirc S, Vercauteren T, Peltier E, Cave C, Bourg Heckly G. In vivo imaging of the bronchial wall microstructure using fibered confocal fluorescence microscopy. Am J Respir Crit Care Med. 2007 Jan 1;175(1):22-31. doi: 10.1164/rccm.200605-684OC. Epub 2006 Oct 5.

Reference Type BACKGROUND
PMID: 17023733 (View on PubMed)

Pacurariu RI. Low incidence of side effects following intravenous fluorescein angiography. Ann Ophthalmol. 1982 Jan;14(1):32-6.

Reference Type BACKGROUND
PMID: 7125438 (View on PubMed)

Other Identifiers

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ACA00001534

Identifier Type: -

Identifier Source: secondary_id

08-000800

Identifier Type: -

Identifier Source: org_study_id

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