Adult Stem Cell Therapy in Liver Insufficiency

Study Overview
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Brief Summary
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In order to determine the clinical application potential of adult stem cells we propose to investigate the safety and toxicity of infusing adult stem cells in the hepatic artery or portal vein of five patients with chronic liver insufficiency and to identify any clinical benefit if such occurs. Objectives: To assess safety and treatment related toxicities To determine clinical benefit or deterioration by monitoring changes in liver function

Detailed Description
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The liver in an adult healthy body maintains a balance between cell gain and cell loss. Though normally proliferatively quiescent, hepatocyte loss such as that caused by partial hepatectomy, uncomplicated by virus infection or inflammation, invokes a rapid regenerative response to restore liver mass. This restoration of moderate cell loss and 'wear and tear' renewal is largely achieved by hepatocyte self-replication. More severe liver injury can activate a potential stem cell compartment located within the intrahepatic biliary tree, giving rise to cords of bipotential, so-called, oval cells within the lobules that can differentiate into hepatocytes and biliary epithelial cells. A third population of stem cells with hepatic potential reside in the bone marrow; these haematopoietic stem cells can contribute to the albeit low renewal rate of hepatocytes, make a more significant contribution to regeneration and even completely restore normal function in a murine model of hereditary tyrosinaemia. A recent abstract has suggested that an astonishingly high number of bone marrow cells ( 25% of liver parenchyma occupied by bone marrow-derived cells) will engraft and differentiate into hepatocytes in a model of cirrhosis in the mouse when injected intravenously. More importantly, this bone marrow infusion resulted in significant improvements in liver function (serum albumin) within the cirrhotic animals. This is a safety and toxicity study in five patients with chronic liver disease. Each will receive autologous stem cells 10 to the sixth cells via the hepatic artery or portal vein under image guided scanning. Patients will be followed for a total of 60 days.

Official Title
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Adult Stem Therapy for Patients With Liver Insufficiency

Conditions
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Liver Cirrhosis

Intervention / Treatment
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* Procedure: Leukapheresis
* Procedure: Infusion of stem cells via image guided scan


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - Male or female aged from 20 years to 65 years Evidence of chronic liver failure Abnormal serum albumin and/or bilirubin and/or prothrombin time Unsuitable for liver transplantation WHO performance status <2 Women of childbearing potential may be included but must use a reliable and appropriate contraceptive method Life expectancy of at least three months Ability to give informed consent Exclusion Criteria: - Patients aged below 20 years or above 65 years Pregnant or lactating women Patients with recent recurrent gastrointestinal bleeding Spontaneous bacterial peritonitis Evidence of active infection HIV infection Patients unable to give informed consent

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Interventional Model Description: Autologous stem cells
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Autologous Stem Cells<br> | Procedure: Leukapheresis<br> <br> Procedure: Infusion of stem cells via image guided scan<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Serious Adverse Events Related to Injection | Incidence of serious adverse event related to injection with the study participants | Day 1 to Day 60 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Improvement in Liver Function | Number of participant that have liver function improvement in liver function | Day 1 to Day 60 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Adult stem cells, Liver disease, CD34 positive cells