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Evaluation of Hepatic Rigidity by Ultrasonic Impulse Elastography in Liver Transplant Patients (SUPERSONIC)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03174327
Recruitment Status : Completed
First Posted : June 2, 2017
Last Update Posted : June 4, 2018
Information provided by (Responsible Party):
Rennes University Hospital

Brief Summary:
Interventional study with minimal risks and constraints, prospective, mono-centric.

Condition or disease Intervention/treatment Phase
Hepatic Transplantation Diagnostic Test: Hepatic Transplantation Not Applicable

Detailed Description:

Ultrasonic impulse elastography is a technique for studying non-invasive tissue rigidity. In particular, it is used in hepatology to assess the degree of fibrosis in a simple manner, by eliminating, in a number of cases, liver biopsy. The investigation of fibrosis is an essential element in the follow-up of patients with hepatic transplant since it is the indirect sign of a post-transplant complication or a recurrence of the initial disease.

Several elastography devices are available on the market, using different technologies to measure the rigidity of tissues. Studies have shown that the first hepatic elastography devices, Fibroscan® and Acoustic Radiation Force Impulse (ARFI) can detect significant fibrosis on hepatic grafts accurately and reproducibly. However, there are several factors related to patients or to the elastography apparatus itself, limiting its use by making the collection of measurements impossible or by giving outliers. In addition, first-generation devices (Fibroscan®) are not coupled to a conventional ultrasound system and are dedicated to the measurement of hepatic rigidity, so patients must undergo systematic ultrasound as part of graft follow-up .

Supersonic® (SuperSonic Imagine, Aix-en-Provence, France) is part of the latest generation of elastography devices and is based on ultrafast shearwave elastography (SWE) technology. This device is a conventional ultrasound system for routine ultrasound scanning with an integrated module for measuring tissue stiffness, and has the advantage of establishing real-time mappings of tissue rigidity over a large area. Several studies have shown that the measurements were reliable and reproducible, especially in the assessment of liver stiffness. In the literature, only one study addressed the measurement of hepatic rigidity with the Supersonic® ultrasound system in liver transplant patients and was designed to diagnose viral hepatitis recurrence or acute cellular rejection. In the secondary results, the authors found a significantly higher hepatic rigidity of healthy hepatic grafts compared to healthy native livers.

It is proposed to add to the ultrasound of systematic follow-up of the hepatic grafts carried out in clinical routine an elastographic measurement in order to assess the hepatic rigidity in these patients in a non-invasive way.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 63 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Evaluation of Hepatic Rigidity by Ultrasonic Impulse Elastography in Liver Transplant Patients (SUPERSONIC)
Actual Study Start Date : June 27, 2017
Actual Primary Completion Date : April 24, 2018
Actual Study Completion Date : April 24, 2018

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Hepatic Transplantation Diagnostic Test: Hepatic Transplantation
Systematic long-term monitoring of liver transplant patients includes an annual consultation and more comprehensive follow-up at one year, 5 years and 10 years of transplantation during which patients are hospitalized in day hospital hepatology and have a clinical examination Complete, biological assessment, Fibroscan® graft elastography measurement, hepatic Doppler ultrasound and liver biopsy. Measurement of liver stiffness by SuperSonic® will be added during ultrasound.
Other Name: Supersonic® , Fibroscan andHepatic Puncture-Biopsy

Primary Outcome Measures :
  1. Hepatic graft stiffness in kPa without complication [ Time Frame: Baseline ]
    Average of the three measures taken consecutively

Secondary Outcome Measures :
  1. Hepatic graft stiffness in kPa with complication [ Time Frame: Baseline ]
    Average of the three measures taken consecutively

  2. The performance indicator [ Time Frame: Baseline ]
    Evaluation of the diagnostic performance of Supersonic® and Fibroscan versus Hepatic Puncture-Biopsy (sensitivity, specificity, reproducibility).

  3. The value of the hepatic steatosis of the grafts in the form of a ratio [ Time Frame: Baseline ]
    The value of the hepatic steatosis of the grafts in the form of a ratio between the hepatic brightness and the renal brightness.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men and women aged 18 years and over ;
  • Hepatic transplant patient attending a day hospital of hepatology as part of the systematic follow-up of liver transplantation at 1 year, 5 years or 10 years in order to benefit from a clinical examination, biological evaluation, hepatic ultrasound, Fibroscan and Hepatic Puncture-Biopsy ;
  • Patient in a position to receive information about the protocol ;
  • Patient having given his / her written consent.

Exclusion Criteria:

  • Coagulation disorder (platelets <60,000, Prothrombin Ratio <50%, partial thromboplastin time > 1.5 times the control unless explained by insufficient factor XII deficiency or anti-phospholipid antibodies);
  • Ascites;
  • Platelet antiaggregation taken the previous week biopsy, patient under anticoagulants;
  • Persons of full age who are subject to legal protection (safeguard of justice, guardianship, guardianship), persons deprived of their liberty;
  • Patient not affiliated to social security;
  • Pregnant or nursing women;
  • Simultaneous participation in another research.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03174327

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Rennes University Hospital
Rennes, France, 35033
Sponsors and Collaborators
Rennes University Hospital
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Principal Investigator: Anita Paisant Rennes University Hospital
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Responsible Party: Rennes University Hospital Identifier: NCT03174327    
Other Study ID Numbers: 35RC17_9881_SUPERSONIC
First Posted: June 2, 2017    Key Record Dates
Last Update Posted: June 4, 2018
Last Verified: June 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Muscle Rigidity
Muscular Diseases
Musculoskeletal Diseases
Muscle Hypertonia
Neuromuscular Manifestations
Neurologic Manifestations
Nervous System Diseases