- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06252610
PET/MRI of Primary Sclerosing Cholangitis
PET/MRI Evaluation in Patients With Primary Sclerosing Cholangitis Using Intercellular Matrix Radiopharmaceuticals
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Imaging in the form of cholangiography plays an essential role in diagnosing and managing PSC. In the past decade, magnetic resonance cholangiopancreatography (MRCP) has become preferred over endoscopic retrograde cholangiopancreatography (ERCP) for the diagnosis of PSC because it is non-invasive, thereby safer, and cheaper than ERCP. MRCP's sensitivity and specificity for diagnosing PSC are high, 86% and 94%, respectively. However, to quantify liver fibrosis, MRCP is only accurate in more advanced stages of the disease. Intrahepatic biliary stricture severity was a poor discriminator between the different grades of liver fibrosis measured on magnetic resonance elastography and the different risk strata according to the Mayo Risk Score and The Amsterdam-Oxford prognostic index (AOPI). Other non-invasive diagnostic tests, such as transient elastography, lack full-organ evaluation and may be subject to variation between measurements, despite being the current gold standard for non-invasive fibrosis quantification.
This study aims to use [68Ga]CBP8- or [18F]FAPI PET/MRI to diagnose and quantify PSC-related biliary tract fibrosis. The novel radiopharmaceutical collagen-binding probe 8 labeled with Gallium-68 selectively binds to collagen type I, the predominant extracellular protein in fibrosis. [68Ga]CBP8 has already been investigated in patients affected by pulmonary fibrosis with success. Fibroblast activation protein (FAP) is a type II transmembrane serine protease that is overexpressed in CAFs and, to a lesser extent, in benign processes. It is associated with extracellular matrix remodeling, for example, chronic inflammation, degenerative bone and spine disease, arthritis, and cardiac remodelling after myocardial infarction. Quinolone-based FAP inhibitors (FAPIs) constitute a class of molecules with high affinity to FAP deployed to assess many types of solid tumors and some benign pathologies. 68Ga-FAPIs and, to a lesser extent, 18F-FAPI are being extensively studied in oncologic and non-oncologic positron emission tomography/computed tomography (PET/CT) and, to a lesser extent, PET/MRI, both in Europe and Asia.
In this open-label, single-arm, single-center prospective study, the investigators will recruit 10 patients with known primary sclerosing cholangitis (PSC) who have previously undergone other modalities for the evaluation of hepatic fibrosis, such as liver biopsy and/or transient elastography (FibroScan) and/or MR liver elastography and/or US liver elastography.No healthy volunteers will be included. Patients will be referred to [68Ga]CBP8 or [18F]-FAPI-74 PET/MRI by their primary treating physicians (e.g., hepatologist). After a phone-call pre-screening, electronic medical records verification, and a screening visit, subjects will be imaged with [68Ga]CBP8 or [18F]-FAPI-74 PET/MRI. A blood draw might also be performed to measure serum biomarkers of liver fibrosis.
Transient liver elastography has a diagnostic accuracy ranging from 65% in the initial stages to 90% for severe fibrosis in the setting of PSC. There is no data regarding the use of [68Ga]CBP8 PET/MRI to diagnose or quantify fibrosis in PSC. Therefore, the investigators lack sufficient evidence to estimate power with a reasonable degree of certainty. By enrolling 10 patients for this initial pilot study in the evaluation of hepatic/biliary fibrosis with [68Ga]CBP8 PET/MRI, the investigators will be able to acquire enough data to determine the optimal sample size for a larger study. A paired McNemar's test will be used for hypothesis testing regarding differences in sensitivity, specificity, accuracy, negative predictive value, and positive predictive value between [68Ga]CBP8 PET/MRI and FibroScan. Moreover, the investigators will analyze quantitative features of PET (SUV) and obtain their correlation to the actual fibrosis as reported by the gold standard test. These will be performed using Spearman's correlation coefficient and regression analysis.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: Onofrio Catalano, MD, Ph.D
- Phone Number: 617-724-4030
- Email: ocatalano@mgh.harvard.edu
Study Contact Backup
- Name: Diandrea Galloway
- Phone Number: 617-643-1407
- Email: dgalloway@mgh.harvard.edu
Study Locations
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Massachusetts
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Charlestown, Massachusetts, United States, 02129
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Established clinical diagnosis of large duct PSC
- Participants receiving treatment for IBD are allowed if on a stable dose from screening and expected to remain stable for the duration of the study
- Serum AST and ALT concentration ≤ 8 times the upper limit of normal
Exclusion Criteria:
- Other causes of chronic liver disease, including secondary sclerosing cholangitis or viral, metabolic, or alcoholic liver disease, as assessed clinically
- Known or suspected overlapping clinical or histologic diagnosis of autoimmune hepatitis
- Subjects less than 18 years of age or greater than 85 years of age.
- Subjects with electrical implants, such as cardiac pacemakers or perfusion pumps.
- Subjects with ferromagnetic implants such as aneurysm clips, surgical clips, prostheses, artificial hearts, prosthetic heart valves that are not compatible with the gradient maps of our scanners, metal fragments, shrapnel, metallic tattoos anywhere on the body, tattoos near the eye, or steel implants ferromagnetic objects such as jewelry or metal clips in clothing.
- Subjects who anticipate being pregnant or breastfeeding (a negative STAT quantitative serum hCG pregnancy test is required on the day of the scan before the subject can participate).
- Subjects with claustrophobic reactions
- Subjects with more significant than average potential for cardiac arrest.
- Subjects with a history of major head trauma (i.e., multiple concussions, traumatic brain injury).
- Subjects with a history of bleeding disorders.
- Subjects whose research-related radiation exposure exceeds current Radiology Department guidelines (i.e., 50 mSv in the prior 12 months).
- Subjects unable to lie comfortably on a bed inside the PET/MRI bore as assessed by physical examination and medical history (e.g., back pain, arthritis).
- Subjects under the direct supervision of the principal investigator;
- Subjects with a body weight of > 300 lbs (operational weight limit of the PET/MRI table) or BMI >33 kg/m2 (the Athinoula A. Martinos Center standard procedure to avoid claustrophobia or mechanical impossibility of fitting the subject into the scanner bore, which is less than 60 cm wide).
- A history of acute or chronic severe renal insufficiency (glomerular filtration rate <30 mL/min/1.73m2
- Perioperative liver transplantation period.
- A history of systemic lupus, multiple myeloma, nephrogenic systemic fibrosis, or other comorbidities resulting in chronic kidney disease stage IV or higher
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
PSC
Population will be consecutive patients with PSC, who will be referred to us by the MGB-affiliated hepatologists.
|
An intravenous catheter will be placed in an arm or hand vein for injection of [68Ga]CBP8;
The same intravenous catheter used to inject the radiotracer will be used to inject the hepatospecific gadolinium contrast agent Eovist (Bayer, Whippany, NJ);
MRI and PET scanner to be used: 3.0 T Laboratory (Bay 7) Siemens Biograph mMR. Magnetic resonance images of the abdomen will be acquired using the Martinos Center's combined 3 Tesla PET/MRI scanner. The image quality on these 3 Tesla devices will be very high, equivalent to or better than any other standard clinical MRI system. PET images of the target body site will be acquired When necessary, the data acquisition will be started shortly before radiotracer injection; Coincidence event data will be acquired and stored in list mode or compressed (i.e., sinogram space) format. Subjects will be asked to lie still for the duration of the study. The entire imaging session will last up to 120 minutes |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Diagnostic accuracy in detection of fibrotic components in patients with PSC
Time Frame: (1-2 Months)
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To establish the diagnostic capabilities (sensitivity, specificity, accuracy) of PET/MRI using [68Ga]CBP8 or [18F]-FAPI-74 for detection of the fibrotic component in patients with PSC.
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(1-2 Months)
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Quantification of fibrotic components in PSC
Time Frame: From date of PET/MRI examination to date of final histopathology result: (max. 1-2 Months)
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Quantification of fibrotic component in patients with PSC with [68Ga]CBP8- or [18F]-FAPI-74-PET/MT by using liver histology (when available) as the standard for comparison.
If histology is unavailable, non-invasive tests (FibroScan, MRI Elastography, serum biomarkers) will be used.
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From date of PET/MRI examination to date of final histopathology result: (max. 1-2 Months)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Correlation of PET parameters with MRI parameters
Time Frame: 1-2 Months
|
Compare fibrosis levels with gadoxetate contrast-enhanced and other MRI parameters (e.g., MRCP)
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1-2 Months
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Correlation of PET parameters with clinical and imaging biomarkers/tests for fibrosis
Time Frame: 1-2 Months
|
Compare fibrosis levels as measured by [68Ga]CBP8 or [18F]FAPI-74-PET/MRI to selected fibrosis plasma biomarkers, fibroscan, and derived scores.
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1-2 Months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Onofrio Catalano, MD, Ph.D, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School
Publications and helpful links
General Publications
- Lindor KD, Kowdley KV, Harrison ME; American College of Gastroenterology. ACG Clinical Guideline: Primary Sclerosing Cholangitis. Am J Gastroenterol. 2015 May;110(5):646-59; quiz 660. doi: 10.1038/ajg.2015.112. Epub 2015 Apr 14.
- Dave M, Elmunzer BJ, Dwamena BA, Higgins PD. Primary sclerosing cholangitis: meta-analysis of diagnostic performance of MR cholangiopancreatography. Radiology. 2010 Aug;256(2):387-96. doi: 10.1148/radiol.10091953.
- Catalano OA, Gee MS, Nicolai E, Selvaggi F, Pellino G, Cuocolo A, Luongo A, Catalano M, Rosen BR, Gervais D, Vangel MG, Soricelli A, Salvatore M. Evaluation of Quantitative PET/MR Enterography Biomarkers for Discrimination of Inflammatory Strictures from Fibrotic Strictures in Crohn Disease. Radiology. 2016 Mar;278(3):792-800. doi: 10.1148/radiol.2015150566. Epub 2015 Oct 5.
- Montesi SB, Izquierdo-Garcia D, Desogere P, Abston E, Liang LL, Digumarthy S, Seethamraju R, Lanuti M, Caravan P, Catana C. Type I Collagen-targeted Positron Emission Tomography Imaging in Idiopathic Pulmonary Fibrosis: First-in-Human Studies. Am J Respir Crit Care Med. 2019 Jul 15;200(2):258-261. doi: 10.1164/rccm.201903-0503LE. No abstract available.
- Kratochwil C, Flechsig P, Lindner T, Abderrahim L, Altmann A, Mier W, Adeberg S, Rathke H, Rohrich M, Winter H, Plinkert PK, Marme F, Lang M, Kauczor HU, Jager D, Debus J, Haberkorn U, Giesel FL. 68Ga-FAPI PET/CT: Tracer Uptake in 28 Different Kinds of Cancer. J Nucl Med. 2019 Jun;60(6):801-805. doi: 10.2967/jnumed.119.227967. Epub 2019 Apr 6.
- Giesel FL, Adeberg S, Syed M, Lindner T, Jimenez-Franco LD, Mavriopoulou E, Staudinger F, Tonndorf-Martini E, Regnery S, Rieken S, El Shafie R, Rohrich M, Flechsig P, Kluge A, Altmann A, Debus J, Haberkorn U, Kratochwil C. FAPI-74 PET/CT Using Either 18F-AlF or Cold-Kit 68Ga Labeling: Biodistribution, Radiation Dosimetry, and Tumor Delineation in Lung Cancer Patients. J Nucl Med. 2021 Feb;62(2):201-207. doi: 10.2967/jnumed.120.245084. Epub 2020 Jun 26.
- Catalano OA, Wu V, Mahmood U, Signore A, Vangel M, Soricelli A, Salvatore M, Gervais D, Rosen BR. Diagnostic performance of PET/MR in the evaluation of active inflammation in Crohn disease. Am J Nucl Med Mol Imaging. 2018 Feb 5;8(1):62-69. eCollection 2018.
- Ludwig J. Surgical pathology of the syndrome of primary sclerosing cholangitis. Am J Surg Pathol. 1989;13 Suppl 1:43-9.
- Tafur M, Cheung A, Menezes RJ, Feld J, Janssen H, Hirschfield GM, Jhaveri KS. Risk stratification in primary sclerosing cholangitis: comparison of biliary stricture severity on MRCP versus liver stiffness by MR elastography and vibration-controlled transient elastography. Eur Radiol. 2020 Jul;30(7):3735-3747. doi: 10.1007/s00330-020-06728-6. Epub 2020 Mar 4.
- Vuppalanchi R, Sanyal AJ. Myths and mysteries about staging hepatic fibrosis by fibroscan. Clin Gastroenterol Hepatol. 2015 Apr;13(4):780-2. doi: 10.1016/j.cgh.2014.10.030. Epub 2014 Nov 5. No abstract available.
- Corpechot C, Gaouar F, El Naggar A, Kemgang A, Wendum D, Poupon R, Carrat F, Chazouilleres O. Baseline values and changes in liver stiffness measured by transient elastography are associated with severity of fibrosis and outcomes of patients with primary sclerosing cholangitis. Gastroenterology. 2014 Apr;146(4):970-9; quiz e15-6. doi: 10.1053/j.gastro.2013.12.030. Epub 2013 Dec 31.
- Ehlken H, Wroblewski R, Corpechot C, Arrive L, Rieger T, Hartl J, Lezius S, Hubener P, Schulze K, Zenouzi R, Sebode M, Peiseler M, Denzer UW, Quaas A, Weiler-Normann C, Lohse AW, Chazouilleres O, Schramm C. Validation of Transient Elastography and Comparison with Spleen Length Measurement for Staging of Fibrosis and Clinical Prognosis in Primary Sclerosing Cholangitis. PLoS One. 2016 Oct 10;11(10):e0164224. doi: 10.1371/journal.pone.0164224. eCollection 2016.
- Altmann A, Haberkorn U, Siveke J. The Latest Developments in Imaging of Fibroblast Activation Protein. J Nucl Med. 2021 Feb;62(2):160-167. doi: 10.2967/jnumed.120.244806. Epub 2020 Oct 30.
- Sanchez-Crespo A. Comparison of Gallium-68 and Fluorine-18 imaging characteristics in positron emission tomography. Appl Radiat Isot. 2013 Jun;76:55-62. doi: 10.1016/j.apradiso.2012.06.034. Epub 2012 Aug 29.
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2022P002225
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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