An observational study in MASLD, MASH and Fibrosis, Liver, sponsored by Olympus Corporation of the Americas. Recruiting at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-10.
Sponsored by Olympus Corporation of the Americas (part of Olympus Corporation) · Observational
This study shall be a prospective, multicenter, single arm, consecutive, interventional study conducted in a post-market setting using commercially available devices. Consecutive, eligible patients with clinical suspicion of MASLD or MASH reporting for an endoscopic ultrasound and liver biopsy for evaluation of fibrosis will be enrolled. EUS Shear Wave Elastography and Attenuation Imaging technologies will be compared to liver biopsy and FibroScan results and other non-invasive fibrosis screening modalities . The data collected during this study will be evaluated in accordance with the procedures set forth in the protocol. The main question[s] it aims to answer are:
Participants will undergo:
A total of up to 300 subjects will be enrolled and treated at up to six US sites. Enrollment is expected to be completed within 18 months. Each subject will undergo procedures (EUS with SW Elastography and Attenuation Imaging, liver biopsy and FibroScan). Liver biopsy and FibroScan should be done within three months from Endoscopic ultrasound with SWE and ATI. End of study participation for a subject will be reached after pathology results have been obtained.
This study has been designed as a post-market clinical registry to evaluate the effectiveness of Endoscopic Ultrasound with Shear Wave Elastography to estimate hepatic fibrosis in patients with chronic liver disease. All consenting, eligible patients reporting for an ultrasound and liver biopsy for evaluation of fibrosis meeting the inclusion criteria will be consecutively enrolled into the study and assigned a unique study identification number.
1,298 studies on the registry are indexed under Liver Cirrhosis; 338 are open to participants now.
This study's planned enrollment of 300 is above the median of 171 across 526 observational studies indexed under Liver Cirrhosis.
Browse Liver Cirrhosis studies →Olympus Corporation of the Americas is the lead sponsor of 21 studies on the registry; 5 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients with chronic liver disease
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Consecutive, eligible patients reporting for an endoscopic ultrasound liver biopsy and FibroScan for evaluation of liver fibrosis will be enrolled. EUS-SWE/ATI will be compared to liver biopsy pathology results, FibroScan (VCTE and CAP) results, and screening scores).
Device: Endoscopic Ultrasound Shear Wave Elastography (EUS) and Attenuation Imaging · Device: FibroScan · Device: Liver biopsy
EUS combines ultrasound technology with endoscopy to gain an internal vantage point to obtain higher resolution ultrasound images. Shear Wave is a software option on the ultrasound system EUS that provides an advanced measure and dynamic display of tissue stiffness which is being evaluated for use in assessing liver fibrosis. Attenuation Imaging (ATI) is a novel application that provides the capability to quantify and color-code the changes in attenuation coefficient of the liver that may arise with changes in liver composition (e.g., increased fat levels).
Also known as: EUS-SWE/ATI
A small ultrasound probe to measure the velocity of a sound wave passing through the liver. This is converted into kilopascals (kPa), which is used to assess liver fibrosis.
A biopsy of liver tissue could be obtained under endoscopic ultrasound guidance, interventional radiology (percutaneously), or surgically. Endoscopic Ultrasound-guided liver biopsy provides high resolution images of left lobe of the liver and a good portion of the right lobe of the liver. This, coupled with Doppler capability, allows the physician to direct the biopsy needle safely into the liver for sampling under real time image guidance.
Also known as: EUS-guided LB
Shear Wave Elastography (SWE) vs liver biopsy METAVIR staging system
Establish optimal cutoffs for EUS-SWE cutoffs in reference to liver biopsies on METAVIR staging system for significant fibrosis (F0-1 vs F2-4), advanced fibrosis (F0-2 vs F3-4), and cirrhosis (F0-3 vs F4) based on area under the receiver operator characteristics (AUROC) curve analysis.
Time frame: During study data analysis
SWE vs FibroScan and other non-invasive fibrosis screening modalities ( screening scores)
Evaluate the diagnostic performance of EUS-SWE compared to FibroScan (VCTE) and to other non-invasive fibrosis screening modalities (e.g., Fibrosis-4 Score (FIB-4), AST to Platelet Ratio Index (APRI), and NAFLD Fibrosis Score (NFS)).
Time frame: During study analysis
Correlation of EUS-SWE to fibrosis staging (from liver biopsy).
Evaluate the correlation of EUS-SWE to fibrosis staging (from liver biopsy).
Time frame: During study analysis
Correlation of EUS-ATI to steatosis score (from liver biopsy)
Evaluate the correlation of EUS-ATI to steatosis score (from liver biopsy).
Time frame: During study analysis
Plan to share: No
No publications or documents are linked to this record.
Started Sep 2025 (actual). Primary completion is estimated for Nov 2028, 38 months after the start.
Of 247 observational studies under Liver Cirrhosis, half reached primary completion within 47 months of starting (the median), counting those still running; a quarter within 18 and three quarters within 71. This study's planned 38 months is below that.
Since we started tracking on Sep 25, 2026, the dates moved once, on Nov 10, 2026: primary completion Feb 2027 → Nov 2028 and completion Mar 2027 → Nov 2028.
Earlier changes are on the record history on ClinicalTrials.gov ↗
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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