View clinical trials related to Post-hepatectomy Liver Failure.
Filter by:The goal of this in-silico clinical trial is to learn about the usability and clinical effectiveness of an interpretable deep learning framework (VAE-MLP) using counterfactual explanations and layerwise relevance propagation for prediction of post-hepatectomy liver failure (PHLF) in patients with hepatocellular carcinoma (HCC). The main questions it aims to answer are: - To investigate the usability of the VAE-MLP framework for explanation of the deep learning model. - To investigate the clinical effectiveness of VAE-MLP framework for prediction of post-hepatectomy liver failure in patients with hepatocellular carcinoma. In the usability trial the clinicians and radiologists will be shown the counterfactual explanations and layerwise relevance propagation (LRP) plots to evaluate the usability of the framework. In the clinical trial the clinicians and radiologists will make the prediction under two different conditions: with model explanation and without model explanation with a washout period of at least 14 days to evaluate the clinical effectiveness of the explanation framework.
Hepatectomy is an essential treatment for various benign and malignant diseases of the liver. However, post-hepatectomy liver failure (PHLF) is still a life-threatening complication after hepatectomy. The pathophysiological mechanism of PHLF has not yet been fully elucidated, and there is still a lack of effective strategies for either prevention or therapy of PHLF. Sphingolipids include ceramides (CER), sphingomyelins (SM), glycosphingolipids (GSL), sphingosine (SPH), and sphingosine-1-phosphate (S1P) are multi-functional lipids that regulates cell proliferation, cell survival, cell death, inflammation, tissue fibrosis, cancer cell metastasis, and invasion. Liver is a main organ for metabolizing sphingolipids, dysregulation of specific sphingolipids is associated with several liver diseases, therefore sphingolipids have been proposed to be biomarkers of liver diseases, including hepatitis, liver cancer, fatty liver diseases, and liver fibrosis. Moreover, several studies have shown CER, SPH and S1P are critical in regulating pathophysiology of liver diseases, including liver regeneration, necrosis, and inflammation. Given that PHLF causes dramatic dysregulation in biochemical metabolism in liver, the investigators hypothesize that dysregulation of sphingolipid metabolism may also occur in PHLF, and the dysregulation of specific sphingolipids may serve as a biomarker or regulator during progression and recovery of PHLF. This project will examine the association between sphingolipid metabolism and PHLF. Levels of sphingolipid metabolites and their related enzymes in plasma and liver tissue of patients with hepatic resection will be measured by using liquid chromatograph/electrospray ionization/mass spectrometry (LC-ESI-MS/MS) and high-throughput real-time quantitative PCR. This project will facilitate us to identify specific sphingolipid metabolites as biomarker and regulator of PHLF.
Early postoperative extracorporal liver support therapy (ELS) as a tool to manage post hepatectomy liver failure (PLF). Post-operative liver failure (PLF) has been identified as a major risk factor leading to increased morbidity and mortality. The incidence of PLF varies largely between 0-30%, and may be accounted for the main reason of postoperative mortality related to liver surgery (reported figures ranging from 18 to 75 %). Currently, there are only a few treatment options for PLF, mainly restricted to the treatment of complications like bile leakage, infections as well as the prevention of further liver damage caused by e.g. thrombosis or haemorrhage as well as administration of liver toxic drugs. Recently the international study group on liver surgery (ISGLS) published criteria for a new definition of PLF which will greatly facilitate the comparison of results from future studies on a variety of aspects on liver failure. ELS by using the Molecular Adsorbent Recirculating System (MARS) is based on a modified haemodialysis that allows the removal of water-soluble and protein bound toxins over an albumin-coated high flux membrane against recycled exogenous albumin. Thus, MARS can support the compromised detoxification capacity of the liver as well as improve physiological parameters. This would offer the potential for temporary support for the harmed liver after liver resection allowing for a more uneventful recovery. For obvious reasons previous reports contain few patients, present heterogonous treatment groups and all suffer from lack of standardized treatment protocols. Few if any surviving patients, thus providing no evidence to encourage ELS as a possible treatment option for patients suffering of PLF. However, studies with defined patient populations and treatments according to a predefined standardised treatment protocol are warranted. Primary issues to be addressed: 1. Can ELS be applied in an early phase of PLF? 2. Is ELS safe and feasible for the treatment of PLF when practised according to a predefined protocol? Secondary issues to be addressed: 1. The development of predictive laboratory-chemical markers of liver failure 2. Indirect measures of portal flow and portal pressure 3. Indocyanine green clearance (ICG) under ELS treatment 4. Clearance of toxic products as assessed in aliquots taken from the dialysate