Pneumatic Reversible Portal Vein Diameter Modulation After Major Hepatectomy (MODHEP1)

April 15, 2019 updated by: Assistance Publique - Hôpitaux de Paris

Pneumatic Reversible Portal Vein Diameter Modulation After Major Hepatectomy in Non Cirrhotic Patient

This ring aimed to preserve an intra-hepatic porto-caval gradient inferior to 5 mm Hg during and after major hepatectomy (48h) to protect the liver during the initial phases of liver regeneration. Morphological features of MID-AVRTM allow its intra corporeal opening and percutaneously removal after an balloon inflation with 5 ml of physiological serum. MID-AVRTM had been developed in pig where it had proved its efficiency to improve liver function after 75% hepatectomy and its capacity to be removed percutaneously. Aim of this feasibility study (Phase I/II) is to prove in series of 3 evaluable patients (Phase A) then 6 evaluable patients (Phase B) that MID-AVRTM could be used in human without deleterious consequence. In phase A, MID-AVRTM is dispose around the portal vein before and during a major hepatectomy performed on healthy liver and removed before abdominal closure. If phase A results confirmed that MID-AVRTM well modulates portal pressure and is easily opened and removed by acute inflation, the phase B will be started. In phase B, MID-AVRTM will be dispose around the portal vein before major hepatectomy on healthy liver and conserved 48 hours before to be removed percutaneously at the operating room.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Preserving liver function is vital, especially after hepatectomy, the main curative treatment of liver tumor. An hepatectomy that preserved a remnant liver volume < 0.5% of the body weight is associated with a very high risk of post-operative liver failure. In such situation, liver volume is not sufficient to support local hemodynamic consequences of the hepatectomy that is responsible of intrahepatic endothelial cell injury that impaired liver function and regeneration. To date, preoperative vein embolization (PVE) associated or not to liver transection (ALPSS procedure) that increased future remnant liver from 20% to 90% is the only method to prevent this complication. Even this preparation is necessary for the moment, PVE increased cancer cell proliferation and is associated with lower recurrence free survival than without PVE. Despite a potential PVE, POLF occurred in 5% to 7% after major hepatectomy and stayed the first cause of death after hepatectomy. It has been demonstrated that portal pressure superior to 20 mm Hg and/or porto-caval gradient superior to 12 mm Hg at the end of hepatectomy was associated to the occurrence of POLF. Aim to avoid this acute intra hepatic portal hypertension associated to major hepatectomy that is associated with an early liver endothelial cell injury, we had developed an silicon ring to dispose around the portal vein that contained an circular inflatable balloon to narrow precisely the portal vein lumen (MID-AVRTM).

Phase A: Tolerance and functionality of MID-AVR during surgery Each procedure will be filmed. Phase B: Tolerance and functionality of MID-AVR after surgery Each procedure will be filmed.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • France
      • Villejuif, France, 94
        • Recruiting
        • AP-HP, Paul Brousse Hospital, Centre Hepato-Biliaire
        • Contact:
        • Principal Investigator:
          • Eric VIBERT, MD

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • French resident affiliated to Social Insurance
  • Major hepatectomy (Phase A)
  • Major hepatectomy that preserved only one hepatic vein (Phase B)
  • Remnant liver volume > 0.5% of the body weight

Exclusion Criteria:

  • Age > 80 (Phase A) and Age > 70 (Phase B)
  • Cirrhotic patient (F4)
  • Repeat hepatectomy
  • Patient who required a portal vein resection
  • History of deep venous thrombosis
  • History of portal thrombosis

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: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: MID-AVR
Tolerance and functionality of MID-AVR during surgery (Phase A) and after surgery (Phase B)
Device: MID-AVR

Phase A (4 patients): After laparotomy and dissection of hepatic pedicle, feasibility of MID-AVR positioning around the portal vein by hepato-biliary surgeon and visual evaluation of potential spatial conflict with hepatic artery and choledochal. Mid-AVR is removed at the end of surgery. Each procedure will be filmed.

Phase B (12 patients): Mid-AVR is maintained at the end of surgery, and during 48 hours to evaluate the persistence of an hepatopetal portal flow without portal vein thrombosis upstream MID-AVR during the 48 hours after the liver surgery at bi-daily ultrasonography.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Success of MID-AVR positioning
Time Frame: intraoperative
Phase A: Feasibility of MID-AVR positioning around the portal vein by hepato-biliary surgeon and visual evaluation of potential spatial conflict with hepatic artery and choledochal. Each procedure will be filmed.
intraoperative
Persistence of an hepatopetal portal flow at bi-daily ultrasonography
Time Frame: during the 48 hours after the liver surgery
Phase B: Persistence of an hepatopetal portal flow without portal vein thrombosis upstream MID-AVR
during the 48 hours after the liver surgery

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Portal pressure measured upstream and downstream the MID-AVR
Time Frame: intraoperative
Phase A
intraoperative
Portal flow measured downstream the MID-AVR
Time Frame: intraoperative
Phase A
intraoperative
Liver perfusion assessed by intraoperative contrast enhanced ultrasonography
Time Frame: intraoperative
Phase A
intraoperative
Reliability of MID-AVR opening by balloon inflation and removal from the portal vein by smooth traction on the tube that is connected to MID-AVR.
Time Frame: intraoperative
Phase A Each procedure will be filmed.
intraoperative
Occurrence of POLF (Bilirubin > 50 µmol/L and PT < 50% )
Time Frame: at postoperative day 3
Phase B
at postoperative day 3
Occurrence of post-operative hemorrhage (decrease in haemoglobin that required red pack cell transfusion)
Time Frame: at postoperative day 3
Phase B
at postoperative day 3
Occurrence of Post-operative biliary fistulae (Bilirubin concentration in fluid drainage greater than 3 fold the plasmatic bilirubin rate)
Time Frame: at postoperative day 3
Phase B
at postoperative day 3
Reliability of MID-AVR opening by balloon inflation and percutaneously removal from the portal vein by smooth traction on the tube that is connected to MID-AVR.
Time Frame: at postoperative day 3
Phase B Removal will be done at the operating room under neurolept analgesia and local anesthesia under radiological control. Each procedure will be filmed.
at postoperative day 3

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Assistance Publique - Hôpitaux de Paris

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Medical Innovation Developpement (MID)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Eric VIBERT, MD, PhD, AP-HP, Paul Brousse Hospital, Centre Hepato-Biliaire, Villejuif, France

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 18, 2015

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2020

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 11, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 16, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 17, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 16, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 15, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • P131002

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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