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Shalaby S, Ronzoni L, Hernandez-Gea V, Valenti L. The genetics of portal hypertension: Recent developments and the road ahead. Liver Int 2023; 43:2592-2603. [PMID: 37718732 DOI: 10.1111/liv.15732] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/07/2023] [Accepted: 09/02/2023] [Indexed: 09/19/2023]
Abstract
Portal hypertension (PH), defined as a pathological increase in the portal vein pressure, has different aetiologies and causes. Intrahepatic PH is mostly secondary to the presence of underlying liver disease leading to cirrhosis, characterized by parenchymal changes with deregulated accumulation of extracellular matrix and vascular abnormalities; liver sinusoidal endothelial cells and hepatic stellate cells are key players in PH progression, able to influence each other. However, PH may also develop independently of parenchymal damage, as occur in portosinusoidal vascular disorder (PSVD), a group of clinical and histological entities characterized by portal vasculature dysfunctions. In this particular group of disorders, the pathophysiology of PH is still poorly understood. In the last years, several genetic studies, based on genome-wide association studies or whole-exome sequencing analysis, have highlighted the importance of genetic heritability in PH pathogenesis, both in cirrhotic and non-cirrhotic cases. The common PNPLA3 p.I148M variant, one of the main determinants of the susceptibility to steatotic liver disease, has also been associated with decompensation in patients with PH. Genetic variations at loci influencing coagulation, mainly the ABO locus, may directly contribute to the pathogenesis of PH. Rare genetic variants have been associated with familiar cases of progressive PSVD. In this review, we summarize the recent knowledges on genetic variants predisposing to PH development, contributing to better understand the role of genetic factors in PH pathogenesis.
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Grants
- Commissioner for Universities and Research from the Department of Economy and Knowledge" of the "Generalitat de Catalunya" (AGAUR SGR2017_517) (VHG)
- Fondazione Patrimonio Ca' Granda, "Liver BIBLE" (PR-0361) (LV)
- Gilead_IN-IT-989-5790 (LV)
- Innovative Medicines Initiative 2 joint undertaking of European Union's Horizon 2020 research and innovation programme and EFPIA European Union (EU) Programme Horizon 2020 (under grant agreement No. 777377) for the project LITMUS (LV)
- Instituto de Salud Carlos III" FIS PI20/00569 FEDER from the European Union (Fondos FEDER, "Una manera de hacer Europa") (VHG)
- Italian Ministry of Health (Ministero della Salute), Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Ricerca Corrente (LV)
- Italian Ministry of Health (Ministero della Salute), Rete Cardiologica "CV-PREVITAL" (LV)
- Italian Ministry of Health (Ministero della Salute), Ricerca Finalizzata 2016, RF-2016-02364358 ("Impact of whole exome sequencing on the clinical management of patients with advanced nonalcoholic fatty liver and cryptogenic liver disease"), Ricerca Finalizzata 2021 RF-2021-12373889, Italian Ministry of Health, Ricerca Finalizzata PNRR 2022 "RATIONAL: Risk strAtificaTIon Of Nonalcoholic fAtty Liver" PNRR-MAD-2022-12375656 (LV)
- Italian Ministry of Health (Ministero della Salute). PNRR PNC-E3-2022-23683266 PNC-HLS-DA, INNOVA (LV)
- The European Union, H2020-ICT-2018-20/H2020-ICT-2020-2 programme "Photonics" under grant agreement No. 101016726 - REVEAL (LV)
- The European Union, HORIZON-MISS-2021-CANCER-02-03 programme "Genial" under grant agreement "101096312" (LV)
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Affiliation(s)
- Sarah Shalaby
- Barcelona Hepatic Hemodynamic Laboratory, Liver Unit, Hospital Clínic, Institut de Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, CIBEREHD, Health Care Provider of the European Reference Network on Rare Liver Disorders (ERN-Liver), Barcelona, Spain
- Department of Surgery, Oncology, and Gastroenterology, Padua University Hospital, Health Care Provider of the European Reference Network on Rare Liver Disorders (ERN-Liver), Padua, Italy
| | - Luisa Ronzoni
- Precision Medicine Lab, Biological Resource Center Unit, Department of Transfusion Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano, Milan, Italy
| | - Virginia Hernandez-Gea
- Barcelona Hepatic Hemodynamic Laboratory, Liver Unit, Hospital Clínic, Institut de Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, CIBEREHD, Health Care Provider of the European Reference Network on Rare Liver Disorders (ERN-Liver), Barcelona, Spain
| | - Luca Valenti
- Precision Medicine Lab, Biological Resource Center Unit, Department of Transfusion Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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Shan J, Megarbane A, Chouchane A, Karthik D, Temanni R, Romero AR, Hua H, Pan C, Chen X, Subramanian M, Saad C, Mbarek H, Mehawej C, Chouery E, Abuaqel SW, Dömling A, Remadi S, Yaghi C, Li P, Chouchane L. Genetic predisposition to porto-sinusoidal vascular disorder: A functional genomic-based, multigenerational family study. Hepatology 2023; 77:501-511. [PMID: 35989577 PMCID: PMC9869943 DOI: 10.1002/hep.32735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND AIMS Porto-sinusoidal vascular disorder (PSVD) is a group of liver vascular diseases featuring lesions encompassing the portal venules and sinusoids unaccompanied by cirrhosis, irrespective of the presence/absence of portal hypertension. It can occur secondary to coagulation disorders or insult by toxic agents. However, the cause of PSVD remains unknown in most cases. Hereditary cases of PSVD are exceptionally rare, but they are of particular interest and may unveil genetic alterations and molecular mechanisms associated with the disease. APPROACH AND RESULTS We performed genome sequencing of four patients and two healthy individuals of a large multigenerational Lebanese family with PSVD and identified a heterozygous deleterious variant (c.547C>T, p.R183W) of FCH and double SH3 domains 1 ( FCHSD1 ), an uncharacterized gene, in patients. This variant segregated with the disease, and its pattern of inheritance was suggestive of autosomal dominant with variable expressivity. RNA structural modelling of human FCHSD1 suggests that the C-to-T substitution at position 547, corresponding to FCHSD1R183W , may increase both messenger RNA (mRNA) and protein stability and its interaction with MTOR-associated protein, LST8 homolog, a key protein of the mechanistic target of rapamycin (mTOR pathway). These predictions were substantiated by biochemical analyses, which showed that FCHSD1R183W induced high FCHSD1 mRNA stability, overexpression of FCHSD1 protein, and an increase in mTORC1 activation. This human FCHSD1 variant was introduced into mice through CRISPR/Cas9 genome editing. Nine out of the 15 mice carrying the human FCHSD1R183W variant mimicked the phenotype of human PSVD, including splenomegaly and enlarged portal vein. CONCLUSIONS Aberrant FCHSD1 structure and function leads to mTOR pathway overactivation and may cause PSVD.
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Affiliation(s)
- Jingxuan Shan
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar.,Department of Genetic Medicine , Weill Cornell Medicine , New York , New York , USA
| | - André Megarbane
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon.,Institut Jérôme Lejeune , CRB BioJeL , Paris , France
| | - Aziz Chouchane
- Faculta di Medicina e Chirurgia , Universita Cattolica del Sacro Cuero , Rome , Italy.,Institute of Pathology , University of Bern , Bern , Switzerland
| | - Deepak Karthik
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | | | - Atilio Reyes Romero
- Drug Design Group, Department of Pharmacy , University of Groningen , Groningen , Netherlands
| | - Huiying Hua
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Chun Pan
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Xixi Chen
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Murugan Subramanian
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | - Chadi Saad
- Genome Programme , Qatar Foundation Research, Development and Innovation , Qatar Foundation , Doha , Qatar
| | - Hamdi Mbarek
- Genome Programme , Qatar Foundation Research, Development and Innovation , Qatar Foundation , Doha , Qatar
| | - Cybel Mehawej
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon
| | - Eliane Chouery
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon
| | - Sirin W Abuaqel
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | - Alexander Dömling
- Drug Design Group, Department of Pharmacy , University of Groningen , Groningen , Netherlands
| | | | - Cesar Yaghi
- Department of Gastroenterology , Hotel-Dieu de France Hospital , Faculty of Medicine, Saint Joseph University of Beirut , Beirut , Lebanon
| | - Pu Li
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Lotfi Chouchane
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar.,Department of Genetic Medicine , Weill Cornell Medicine , New York , New York , USA.,Department of Microbiology and Immunology , Weill Cornell Medicine , New York , New York , USA
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De Gottardi A, Sempoux C, Berzigotti A. Porto-sinusoidal vascular disorder. J Hepatol 2022; 77:1124-1135. [PMID: 35690264 DOI: 10.1016/j.jhep.2022.05.033] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/15/2022] [Accepted: 05/23/2022] [Indexed: 12/04/2022]
Abstract
It is well established that portal hypertension can occur in the absence of cirrhosis, as reported in patients with immune disorders, infections and thrombophilia. However, similar histological abnormalities primarily affecting the hepatic sinusoidal and (peri)portal vasculature have also been observed in patients without portal hypertension. Thus, the term porto-sinusoidal vascular disorder (PSVD) has recently been introduced to describe a group of vascular diseases of the liver featuring lesions encompassing the portal venules and sinusoids, irrespective of the presence/absence of portal hypertension. Liver biopsy is fundamental for PSVD diagnosis. Specific histology findings include nodular regenerative hyperplasia, obliterative portal venopathy/portal vein stenosis and incomplete septal fibrosis/cirrhosis. Since other conditions including alcohol-related and non-alcoholic fatty liver disease, or viral hepatitis, or the presence of portal vein thrombosis may occur in patients with PSVD, their relative contribution to liver damage should be carefully assessed. In addition to histology and clinical diagnostic criteria, imaging and non-invasive tests such as liver and spleen stiffness measurements could aid in the diagnostic workup. The introduction of PSVD as a novel clinical entity will facilitate collaborative studies and investigations into the underlying molecular pathomechanisms encompassed by this term.
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Affiliation(s)
- Andrea De Gottardi
- Gastroenterology and Hepatology, Ente Ospedaliero Cantonale, Lugano, Switzerland; Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland.
| | - Christine Sempoux
- Service of Clinical Pathology, Institute of Pathology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Annalisa Berzigotti
- Department for Visceral Medicine and Surgery, Inselspital, Bern University Hospital, University of Bern, Switzerland; Department of Biomedical Research, University of Bern, Bern, Switzerland
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Goel A, Ramakrishna B, Zachariah U, Sajith KG, Burad DK, Kodiatte TA, Keshava SN, Balasubramanian KA, Elias E, Eapen CE. What makes non-cirrhotic portal hypertension a common disease in India? Analysis for environmental factors. Indian J Med Res 2020; 149:468-478. [PMID: 31411170 PMCID: PMC6676844 DOI: 10.4103/ijmr.ijmr_1405_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In India, an unexplained enteropathy is present in a majority of non-cirrhotic intrahepatic portal hypertension (NCIPH) patients. Small intestinal bacterial contamination and tropical enteropathy could trigger inflammatory stimuli and activate the endothelium in the portal venous system. Groundwater contaminated with arsenic is an environmental factor of epidemic proportions in large areas of India which has similar consequences. Von Willebrand factor (a sticky protein) expressed by activated endothelium may promote formation of platelet microthrombi and occlusion of intrahepatic portal vein branches leading to NCIPH. Environmental factors linked to suboptimal hygiene and sanitation, which enter through the gastrointestinal (GI) tract, predispose to platelet plugging onto activated endothelium in portal microcirculation. Thus, NCIPH, an example of poverty linked thrombophilia, is a disease mainly affecting the lower socio-economic strata of Indian population. Public health measures to improve sanitation, provide clean drinking water and eliminate arsenic contamination of drinking water are urgently needed. Till such time as these environmental factors are addressed, NCIPH is likely to remain 'an Indian disease'.
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Affiliation(s)
- Ashish Goel
- Department of Hepatology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Banumathi Ramakrishna
- Department of Pathology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Uday Zachariah
- Department of Hepatology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - K G Sajith
- Department of Hepatology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Deepak K Burad
- Department of Pathology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Thomas A Kodiatte
- Department of Pathology, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Shyamkumar N Keshava
- Department of Radio-diagnosis, Division of GI Sciences, Christian Medical College, Vellore, India
| | - K A Balasubramanian
- Department of Wellcome Research Laboratory, Division of GI Sciences, Christian Medical College, Vellore, India
| | - Elwyn Elias
- Department of Hepatology, Division of GI Sciences, Christian Medical College, Vellore, India; Liver Unit, University Hospitals, Birmingham, UK
| | - C E Eapen
- Department of Hepatology, Division of GI Sciences, Christian Medical College, Vellore, India
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Besmond C, Valla D, Hubert L, Poirier K, Grosse B, Guettier C, Bernard O, Gonzales E, Jacquemin E. Mutations in the novel gene FOPV are associated with familial autosomal dominant and non-familial obliterative portal venopathy. Liver Int 2018; 38:358-364. [PMID: 28792652 DOI: 10.1111/liv.13547] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 08/02/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Obliterative portal venopathy (OPV) is characterized by lesions of portal vein intrahepatic branches and is thought to be responsible for many cases of portal hypertension in the absence of cirrhosis or obstruction of large portal or hepatic veins. In most cases the cause of OPV remains unknown. The aim was to identify a candidate gene of OPV. METHODS Whole exome sequencing was performed in two families, including 6 patients with OPV. Identified mutations were confirmed by Sanger sequencing and expression of candidate gene transcript was studied by real time qPCR in human tissues. RESULTS In both families, no mutations were identified in genes previously reported to be associated with OPV. In each family, we identified a heterozygous mutation (c.1783G>A, p.Gly595Arg and c.4895C>T, p.Thr1632Ile) in a novel gene located on chromosome 4, that we called FOPV (Familial Obliterative Portal Venopathy), and having a cDNA coding for 1793 amino acids. The FOPV mutations segregated with the disease in families and the pattern of inheritance was suggestive of autosomal dominant inherited OPV, with incomplete penetrance and variable expressivity. In silico analysis predicted a deleterious effect of each mutant and mutations concerned highly conserved amino acids in mammals. A deleterious heterozygous FOPV missense mutation (c.4244T>C, p.Phe1415Ser) was also identified in a patient with non-familial OPV. Expression study in liver veins showed that FOPV transcript was mainly expressed in intrahepatic portal vein. CONCLUSIONS This report suggests that FOPV mutations may have a pathogenic role in some cases of familial and non-familial OPV.
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Affiliation(s)
- Claude Besmond
- Inserm U1163, Imagine Institute for Genetic Diseases, Necker University Hospital, Paris, France
| | - Dominique Valla
- Hepatology Unit, National Reference Centre for Rare Vascular Liver Diseases, Beaujon Universitary Hospital, Unity, Clichy, France
| | - Laurence Hubert
- Inserm U1163, Imagine Institute for Genetic Diseases, Necker University Hospital, Paris, France
| | - Karine Poirier
- Inserm U1163, Imagine Institute for Genetic Diseases, Necker University Hospital, Paris, France
| | - Brigitte Grosse
- Inserm, UMR-S1174, Hepatinov, University of Paris-Sud 11, Orsay, France
| | - Catherine Guettier
- Pathology Unit, Hepatinov, Bicêtre Universitary Hospital, Assistance Publique-Hôpitaux de Paris, University of Paris-Sud, Le Kremlin Bicêtre, France
| | - Olivier Bernard
- Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for Rare Pediatric Liver Diseases, Hepatinov, Bicêtre Universitary Hospital, Assistance Publique-Hôpitaux de Paris, University of Paris-Sud, Le Kremlin Bicêtre, France
| | - Emmanuel Gonzales
- Inserm, UMR-S1174, Hepatinov, University of Paris-Sud 11, Orsay, France.,Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for Rare Pediatric Liver Diseases, Hepatinov, Bicêtre Universitary Hospital, Assistance Publique-Hôpitaux de Paris, University of Paris-Sud, Le Kremlin Bicêtre, France
| | - Emmanuel Jacquemin
- Inserm, UMR-S1174, Hepatinov, University of Paris-Sud 11, Orsay, France.,Pediatric Hepatology and Pediatric Liver Transplantation Unit, National Reference Centre for Rare Pediatric Liver Diseases, Hepatinov, Bicêtre Universitary Hospital, Assistance Publique-Hôpitaux de Paris, University of Paris-Sud, Le Kremlin Bicêtre, France
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A de novo mutation in KCNN3 associated with autosomal dominant idiopathic non-cirrhotic portal hypertension. J Hepatol 2016; 64:974-7. [PMID: 26658685 DOI: 10.1016/j.jhep.2015.11.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 11/22/2015] [Accepted: 11/23/2015] [Indexed: 12/04/2022]
Abstract
Non-cirrhotic portal hypertension is characterized by histopathological abnormalities in the liver, mostly affecting small intrahepatic portal veins that cause portal hypertension in the absence of cirrhosis. It can be secondary to coagulation disorders or toxic agents. However, most cases are idiopathic non-cirrhotic portal hypertension (INCPH) and familial cases are rare. We report a family in which a father and three of his four children conceived with three different mothers are affected by INCPH. Whole exome and Sanger sequencing showed the father to have a de novo single nucleotide substitution c.1348G>C in the KCNN3 gene that was transmitted to all three of his affected offspring. The KCNN3 gene encodes small conductance calcium-activated potassium (SK) channel 3. SK channels are involved in the regulation of arterial and venous vascular tone by causing smooth muscle relaxation on activation. No data exist on the expression and function of SK channels in portal veins. The autosomal dominant inheritance in this unique pedigree and the single de novo mutation identified, strongly suggests that KCNN3 mutations have a pathogenetic role in INCPH.
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