Evaluation of Liver Fibrosis Following Surgical-induced Weight Loss (FIBROTEST)

June 8, 2026 updated by: University Hospital, Rouen

Evolution of Fibrosis Scores During Weight Loss in a Population of Patients Operated on for Morbid Obesity

Obesity is a frequent disease with an increased prevalence, estimated to 12.4% in France (OBEPI study 2006). Non alcoholic fatty liver disease (NAFLD) and non alcoholic steatohepatitis (NASH) both complicate morbid obesity and could be responsible for the development of liver fibrosis and consequently of liver cirrhosis. Bariatric surgery has been widely used in obese patients to reduce their weight but also to decrease morbidity conditions related to obesity. It could be involved in an improvement in liver lesions observed in obese patients. To evaluate the severity of liver lesions, the gold standard is pathological examination of the liver using percutaneous or surgical biopsies, with a scoring called Fibrosis score stage. Alternative less invasive techniques have been developed to evaluate liver lesions. These tests are commonly used in clinical hepatology and consisted of serum levels determination of fibrosis markers (Fibrotest, Transthyretin).

The aim of this study is to evaluate the evolution of fibrosis scores during weight loss in a population of patients operated on for morbid obesity ( BMI > 40kg/m2 or BMI> 35kg/m2 with comorbidity). The primary end point is to evaluate the concordance between Fibrotest and transthyretin serum levels. The number of patients has been calculated on the basis of a concordance ( Kendall test) superior to 70% in patients with grade F1 fibrosis that represents about 40% of morbid obese patients. A total of 255 patients has to be enrolled in this study. According to the number of patients operated on in the 3 centres (>150/year), the time for recruitment is 12 months. Secondary end points will evaluate in these patients the excess weight loss, the improvement in fibrosis liver tests and the correlation with improvement in other obesity- related conditions, according to surgical procedures.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

255

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Rouen, France, 76000
        • Rouen University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

No

Study Population

obese patients

Description

Inclusion Criteria:

  • patients operated on for morbid obesity (BMI >40kg/m2 or >35kg/m2 associated with comorbidity)

Exclusion Criteria:

  • contraindications to morbid obesity surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Obese patients
Procedure: Surgical procedure
Surgical procedure, liver biopsy, histopathological examination, laboratory tests

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Improvement in transthyretin serum levels
Time Frame: 1 year after surgery
We will measure the modifications of Transthyretin serum levels in correlation with fibrotest, one year after surgery, to assess the effect of weight loss on liver fibrosis
1 year after surgery

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
improvement in fibrosis scores (fibrotest, nashtest, steatotest)
Time Frame: 1 year after surgery
We will measure the modifications of fibrosis scores, one year after surgery, to assess the effect of weight loss on liver fibrosis
1 year after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Rouen

Collaborators

University Hospital, Lille
Amiens University Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2011

Primary Completion (Actual)

February 1, 2013

Study Completion (Actual)

February 1, 2014

Study Registration Dates

First Submitted

November 5, 2011

First Submitted That Met QC Criteria

November 9, 2011

First Posted (Estimated)

November 10, 2011

Study Record Updates

Last Update Posted (Actual)

June 10, 2026

Last Update Submitted That Met QC Criteria

June 8, 2026

Last Verified

June 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2010/079/HP

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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