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Jeyaraj R, Maher ER, Kelly D. Paediatric research sets new standards for therapy in paediatric and adult cholestasis. THE LANCET. CHILD & ADOLESCENT HEALTH 2024; 8:75-84. [PMID: 38006895 DOI: 10.1016/s2352-4642(23)00259-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 11/27/2023]
Abstract
Children with Alagille syndrome and progressive familial intrahepatic cholestasis (PFIC) experience debilitating pruritus, for which there have been few effective treatment options. In the past 2 years, the ileal bile acid transporter (IBAT) inhibitors maralixibat and odevixibat have been approved for the management of cholestatic pruritus in these individuals, representing an important step forward in improving their quality of life. Emerging data suggest these drugs might also improve event-free survival, therefore potentially altering the typical disease course currently seen in these disorders. This Review will discuss how genetic advances have clarified the molecular basis of cholestatic disorders, facilitating the development of new therapeutic options that have only been evaluated in children. We focus specifically on the newly licensed IBAT inhibitors for patients with Alagille syndrome and PFIC and explore the next steps for these drugs in relation to other paediatric and adult cholestatic disorders, recognising that they have the potential to benefit a wider group of patients with gastrointestinal and liver disease.
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Affiliation(s)
- Rebecca Jeyaraj
- University College London Great Ormond Street Institute of Child Health, London, UK
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - Deirdre Kelly
- The Liver Unit, Birmingham Women's and Children's Hospital, Birmingham, UK; University of Birmingham, Birmingham, UK.
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2
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Ayoub MD, Bakhsh AA, Vandriel SM, Keitel V, Kamath BM. Management of adults with Alagille syndrome. Hepatol Int 2023; 17:1098-1112. [PMID: 37584849 PMCID: PMC10522532 DOI: 10.1007/s12072-023-10578-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/30/2023] [Indexed: 08/17/2023]
Abstract
Alagille syndrome (ALGS) is a complex rare genetic disorder that involves multiple organ systems and is historically regarded as a disease of childhood. Since it is inherited in an autosomal dominant manner in 40% of patients, it carries many implications for genetic counselling of patients and screening of family members. In addition, the considerable variable expression and absence of a clear genotype-phenotype correlation, results in a diverse range of clinical manifestations, even in affected individuals within the same family. With recent therapeutic advancements in cholestasis treatment and the improved survival rates with liver transplantation (LT), many patients with ALGS survive into adulthood. Although LT is curative for liver disease secondary to ALGS, complications secondary to extrahepatic involvement remain problematic lifelong. This review is aimed at providing a comprehensive review of ALGS to adult clinicians who will take over the medical care of these patients following transition, with particular focus on certain aspects of the condition that require lifelong surveillance. We also provide a diagnostic framework for adult patients with suspected ALGS and highlight key aspects to consider when determining eligibility for LT in patients with this syndrome.
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Affiliation(s)
- Mohammed D Ayoub
- Department of Pediatrics, Faculty of Medicine, Rabigh Branch, King Abdulaziz University, Jeddah, Saudi Arabia
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Ahmad A Bakhsh
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, ON, M5G 1X8, Canada
- Department of Pediatrics, Faculty of Medicine, University of Jeddah, Jeddah, Saudi Arabia
| | - Shannon M Vandriel
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Verena Keitel
- Department of Gastroenterology, Hepatology and Infectious Diseases, Faculty of Medicine, Otto Von Guericke University Magdeburg, Magdeburg, Germany
| | - Binita M Kamath
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, ON, M5G 1X8, Canada.
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3
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Ayoub MD, Kamath BM. Alagille Syndrome: Current Understanding of Pathogenesis, and Challenges in Diagnosis and Management. Clin Liver Dis 2022; 26:355-370. [PMID: 35868679 DOI: 10.1016/j.cld.2022.03.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Alagille syndrome (ALGS) is a complex heterogenous disease with a wide array of clinical manifestations in association with cholestatic liver disease. Major clinical and genetic advancements have taken place since its first description in 1969. However, clinicians continue to face considerable challenges in the management of ALGS, particularly in the absence of targeted molecular therapies. In this article, we provide an overview of the broad ALGS phenotype, current approaches to diagnosis and with particular focus on key clinical challenges encountered in the management of these patients.
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Affiliation(s)
- Mohammed D Ayoub
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada; Department of Pediatrics, Rabigh Branch, King Abdulaziz University, PO Box 80205, Jeddah 21589, Saudi Arabia
| | - Binita M Kamath
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada.
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Ibrahim SH, Kamath BM, Loomes KM, Karpen SJ. Cholestatic liver diseases of genetic etiology: Advances and controversies. Hepatology 2022; 75:1627-1646. [PMID: 35229330 DOI: 10.1002/hep.32437] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 12/14/2022]
Abstract
With the application of modern investigative technologies, cholestatic liver diseases of genetic etiology are increasingly identified as the root cause of previously designated "idiopathic" adult and pediatric liver diseases. Here, we review advances in the field enhanced by a deeper understanding of the phenotypes associated with specific gene defects that lead to cholestatic liver diseases. There are evolving areas for clinicians in the current era specifically regarding the role for biopsy and opportunities for a "sequencing first" approach. Risk stratification based on the severity of the genetic defect holds promise to guide the decision to pursue primary liver transplantation versus medical therapy or nontransplant surgery, as well as early screening for HCC. In the present era, the expanding toolbox of recently approved therapies for hepatologists has real potential to help many of our patients with genetic causes of cholestasis. In addition, there are promising agents under study in the pipeline. Relevant to the current era, there are still gaps in knowledge of causation and pathogenesis and lack of fully accepted biomarkers of disease progression and pruritus. We discuss strategies to overcome the challenges of genotype-phenotype correlation and draw attention to the extrahepatic manifestations of these diseases. Finally, with attention to identifying causes and treatments of genetic cholestatic disorders, we anticipate a vibrant future of this dynamic field which builds upon current and future therapies, real-world evaluations of individual and combined therapeutics, and the potential incorporation of effective gene editing and gene additive technologies.
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Affiliation(s)
- Samar H Ibrahim
- Division of Pediatric GastroenterologyMayo ClinicRochesterMinnesotaUSA
| | - Binita M Kamath
- The Hospital for Sick ChildrenUniversity of TorontoTorontoOntarioCanada
| | - Kathleen M Loomes
- The Children's Hospital of Philadelphia and Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Saul J Karpen
- Emory University School of Medicine and Children's Healthcare of AtlantaAtlantaGeorgiaUSA
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Menon J, Shanmugam N, Vij M, Rammohan A, Rela M. Multidisciplinary Management of Alagille Syndrome. J Multidiscip Healthc 2022; 15:353-364. [PMID: 35237041 PMCID: PMC8883402 DOI: 10.2147/jmdh.s295441] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/14/2022] [Indexed: 12/14/2022] Open
Abstract
Alagille syndrome (ALGS) is an autosomal dominant disorder characterized by involvement of various organ systems. It predominantly affects the liver, skeleton, heart, kidneys, eyes and major blood vessels. With myriads of presentations across different age groups, ALGS is usually suspected in infants presenting with high gamma glutamyl transpeptidase cholestasis and/or congenital heart disease. In children it may present with decompensated cirrhosis, intellectual disability or short stature, and in adults vascular events like stroke or ruptured berry aneurysm are more commonly noted. Liver transplantation (LT) is indicated in children with cholestasis progressing to cirrhosis with decompensation. Other indications for LT include intractable pruritus, recurrent fractures, hepatocellular carcinoma and disfiguring xanthomas. Due to an increased risk of renal impairment noted in ALGS, these patients would require optimized renal sparing immunosuppression in the post-transplant period. As the systemic manifestations of ALGS are protean and a wider spectrum is being increasingly elucidated, a multidisciplinary team needs to be involved in managing these patients. Moreover, many basic-science and clinical questions especially with regard to its presentation and management remain unanswered. The aim of this review is to provide updated insights into the management of the multi-system involvement of ALGS.
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Affiliation(s)
- Jagadeesh Menon
- Department of Pediatric Gastroenterology & Hepatology, Dr Rela Institute & Medical Centre, Bharath Institute of Higher Education and Research, Chennai, India
- Correspondence: Jagadeesh Menon, Email
| | - Naresh Shanmugam
- Department of Pediatric Gastroenterology & Hepatology, Dr Rela Institute & Medical Centre, Bharath Institute of Higher Education and Research, Chennai, India
| | - Mukul Vij
- Department of Histopathology, Dr Rela Institute & Medical Centre, Bharath Institute of Higher Education & Research, Chennai, India
| | - Ashwin Rammohan
- Institute of Liver Disease & Transplantation, Dr Rela Institute & Medical centre, Bharath Institute of Higher Education and Research, Chennai, India
| | - Mohamed Rela
- Institute of Liver Disease & Transplantation, Dr Rela Institute & Medical centre, Bharath Institute of Higher Education and Research, Chennai, India
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Ayoub MD, Kamath BM. Alagille Syndrome: Diagnostic Challenges and Advances in Management. Diagnostics (Basel) 2020; 10:E907. [PMID: 33172025 PMCID: PMC7694636 DOI: 10.3390/diagnostics10110907] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 12/21/2022] Open
Abstract
Alagille syndrome (ALGS) is a multisystem disease characterized by cholestasis and bile duct paucity on liver biopsy in addition to variable involvement of the heart, eyes, skeleton, face, kidneys, and vasculature. The identification of JAG1 and NOTCH2 as disease-causing genes has deepened our understanding of the molecular mechanisms underlying ALGS. However, the variable expressivity of the clinical phenotype and the lack of genotype-phenotype relationships creates significant diagnostic and therapeutic challenges. In this review, we provide a comprehensive overview of the clinical characteristics and management of ALGS, and the molecular basis of ALGS pathobiology. We further describe unique diagnostic considerations that pose challenges to clinicians and outline therapeutic concepts and treatment targets that may be available in the near future.
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Affiliation(s)
- Mohammed D. Ayoub
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada;
- Department of Pediatrics, Faculty of Medicine, Rabigh Branch, King Abdulaziz University, P.O. Box 80205, Jeddah 21589, Saudi Arabia
| | - Binita M. Kamath
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada;
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Sanada Y, Naya I, Katano T, Hirata Y, Yamada N, Okada N, Ihara Y, Onishi Y, Mizuta K. Visceral artery anomalies in patients with Alagille syndrome. Pediatr Transplant 2019; 23:e13352. [PMID: 30623995 DOI: 10.1111/petr.13352] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/19/2018] [Accepted: 12/18/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Intracranial and pulmonary vascular anomalies are well-known complications and causes of mortality in AGS; however, visceral artery anomalies are less commonly recognized. Herein, we present a retrospective analysis of our experience with pediatric LDLT that focuses on the current problems with and treatments for visceral artery anomalies in AGS after LDLT. METHODS Between May 2001 and December 2017, 294 LDLTs were performed for 285 pediatric recipients. Of these, 13 LDLTs (4.4%) for 12 AGS patients were performed. We classified the visceral artery anomalies into aneurysms and stenosis. RESULTS The overall incidence of visceral aneurysm was 2 of 12 recipients (16.7%) and included a SMA aneurysm in one patient and an IPDA aneurysm with a subsequent SPA aneurysm in one patient; the ages of the diagnosis of visceral aneurysm were 16.3, 21.1, and 21.7 y, respectively. An endovascular treatment was performed for a progressive IPDA saccular aneurysm (12.0 × 14.5 × 15.0 mm). The overall incidence of visceral artery stenosis was 7 of 12 recipients (58.3%) and the median age at the diagnosis of visceral artery stenosis was 15.5 y (range 1.7-22.9 y). All 3 AGS patients with RA stenosis suffered from renal dysfunction (eGFR of 51, 78, and 51 mL/min/1.73m2 ). CONCLUSION The morbidity of visceral artery anomalies is not negligible. The performance of periodic imaging examinations is necessary, even for infants, because it is difficult to detect visceral vascular anomalies in the infant stage.
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Affiliation(s)
- Yukihiro Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Itsuki Naya
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Takumi Katano
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Yuta Hirata
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Naoya Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Noriki Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Yoshiyuki Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Yasuharu Onishi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Koichi Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
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Quintero J, Molera C, Juamperez J, Redecillas S, Meavilla S, Nuñez R, García-Volpe C, Del Toro M, Garcia-Cazorla Á, Ortega J, Segarra Ó, de Carpi JM, Bilbao I, Charco R. Reply. Liver Transpl 2019; 25:178-179. [PMID: 30472769 DOI: 10.1002/lt.25389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Jesús Quintero
- Pediatric Hepatology and Liver Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Cristina Molera
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Javier Juamperez
- Pediatric Hepatology and Liver Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Susanna Redecillas
- Pediatric Gastroenterology, Hepatology, and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Silvia Meavilla
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Raquel Nuñez
- Pediatric Gastroenterology, Hepatology, and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Camila García-Volpe
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Mireia Del Toro
- Pediatric Neurology Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | | | - Juan Ortega
- Pediatric Intensive Care Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Óscar Segarra
- Pediatric Gastroenterology, Hepatology, and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Javier Martin de Carpi
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Itxarone Bilbao
- HPB Surgery and Transplants Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Ramon Charco
- HPB Surgery and Transplants Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
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Quintero J, Molera C, Juamperez J, Redecillas S, Meavilla S, Nuñez R, García C, Del Toro M, Garcia Á, Ortega J, Segarra Ó, de Carpi JM, Bilbao I, Charco R. The Role of Liver Transplantation in Propionic Acidemia. Liver Transpl 2018; 24:1736-1745. [PMID: 30242960 DOI: 10.1002/lt.25344] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/13/2018] [Indexed: 12/30/2022]
Abstract
Despite optimal medical treatment and strict low-protein diet, the prognosis of propionic acidemia (PA) patients is generally poor. We aim to report our experience with liver transplantation (LT) in the management of PA patients. Six patients with PA received a LT at a mean age of 5.2 years (1.3-7.5 years). The indications for LT were frequent metabolic decompensations in the first 4 patients and preventative in the last 2 patients. Two patients presented hepatic artery thromboses that were solved through an interventional radiologist approach. These patients showed a very high procoagulant state that was observed by thromboelastography. Arterial vasospasm without thrombus was observed in 2 patients during the LT surgery. In order to avoid hepatic artery thrombosis, an arterial conduit from the recipient aorta to the hepatic artery of the donor was used in the fifth patient. After LT, patients presented improvement in propionyl byproducts without complete normalization, but no decompensations have been observed. In conclusion, LT could be a good therapeutic option to improve the metabolic control and the quality of life of PA patients. Improved surgical strategies along with new techniques of interventional radiology allow us to perform the LT minimizing the complications derived from the higher risk of hepatic artery thrombosis.
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Affiliation(s)
- Jesús Quintero
- Pediatric Hepatology and Liver Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Cristina Molera
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Javier Juamperez
- Pediatric Hepatology and Liver Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Susanna Redecillas
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Silvia Meavilla
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Raquel Nuñez
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Camila García
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Mireia Del Toro
- Pediatric Neurology Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Ángels Garcia
- Pediatric Neurology Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Juan Ortega
- Pediatric Intensive Care Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Óscar Segarra
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Javier Martin de Carpi
- Pediatric Gastroenterology Hepatology and Nutrition Unit, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Itxarone Bilbao
- HPB Surgery and Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
| | - Ramon Charco
- HPB Surgery and Transplant Department, Hospital Universiatri Vall d'Hebron, Barcelona, Spain
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Abstract
A variety of syndromes are associated with thoracoabdominal aortic pathologies. While these diseases are collectively rare, the presence of advanced or unusual aortic disease at a young age should raise suspicion of an underlying syndrome. Similarly, patients with a known syndrome require close monitoring in anticipation of future aortic disease. In this article, the syndromes most commonly encountered in clinical practice are reviewed, including Marfan syndrome (MFS) and other connective tissue disorders, Turner syndrome (TS), autosomal dominant polycystic kidney disease (ADPKD), neurofibromatosis (NF), Williams syndrome (WS), Alagille syndrome (AGS), and DiGeorge syndrome (DGS). The distinct clinical, imaging, and management features of each disorder are discussed. Attention is focused on the unique patterns of aortic disease in each syndrome, emphasizing the role of recent imaging modalities and treatment strategies. Ancillary and distinguishing aspects of the syndromes that aid in diagnosis are also highlighted.
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Affiliation(s)
- Evan J Zucker
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
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