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Berg T, Aehling NF, Bruns T, Welker MW, Weismüller T, Trebicka J, Tacke F, Strnad P, Sterneck M, Settmacher U, Seehofer D, Schott E, Schnitzbauer AA, Schmidt HH, Schlitt HJ, Pratschke J, Pascher A, Neumann U, Manekeller S, Lammert F, Klein I, Kirchner G, Guba M, Glanemann M, Engelmann C, Canbay AE, Braun F, Berg CP, Bechstein WO, Becker T, Trautwein C. S2k-Leitlinie Lebertransplantation der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) und der Deutschen Gesellschaft für Allgemein- und Viszeralchirurgie (DGAV). ZEITSCHRIFT FUR GASTROENTEROLOGIE 2024; 62:1397-1573. [PMID: 39250961 DOI: 10.1055/a-2255-7246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Affiliation(s)
- Thomas Berg
- Bereich Hepatologie, Medizinischen Klinik II, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Niklas F Aehling
- Bereich Hepatologie, Medizinischen Klinik II, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Tony Bruns
- Medizinische Klinik III, Universitätsklinikum Aachen, Aachen, Deutschland
| | - Martin-Walter Welker
- Medizinische Klinik I Gastroent., Hepat., Pneum., Endokrin. Universitätsklinikum Frankfurt, Frankfurt, Deutschland
| | - Tobias Weismüller
- Klinik für Innere Medizin - Gastroenterologie und Hepatologie, Vivantes Humboldt-Klinikum, Berlin, Deutschland
| | - Jonel Trebicka
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Deutschland
| | - Frank Tacke
- Charité - Universitätsmedizin Berlin, Medizinische Klinik m. S. Hepatologie und Gastroenterologie, Campus Virchow-Klinikum (CVK) und Campus Charité Mitte (CCM), Berlin, Deutschland
| | - Pavel Strnad
- Medizinische Klinik III, Universitätsklinikum Aachen, Aachen, Deutschland
| | - Martina Sterneck
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Hamburg, Hamburg, Deutschland
| | - Utz Settmacher
- Klinik für Allgemein-, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Jena, Deutschland
| | - Daniel Seehofer
- Klinik für Viszeral-, Transplantations-, Thorax- und Gefäßchirurgie, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Eckart Schott
- Klinik für Innere Medizin II - Gastroenterologie, Hepatologie und Diabetolgie, Helios Klinikum Emil von Behring, Berlin, Deutschland
| | | | - Hartmut H Schmidt
- Klinik für Gastroenterologie und Hepatologie, Universitätsklinikum Essen, Essen, Deutschland
| | - Hans J Schlitt
- Klinik und Poliklinik für Chirurgie, Universitätsklinikum Regensburg, Regensburg, Deutschland
| | - Johann Pratschke
- Chirurgische Klinik, Charité Campus Virchow-Klinikum - Universitätsmedizin Berlin, Berlin, Deutschland
| | - Andreas Pascher
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikum Münster, Münster, Deutschland
| | - Ulf Neumann
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikum Essen, Essen, Deutschland
| | - Steffen Manekeller
- Klinik und Poliklinik für Allgemein-, Viszeral-, Thorax- und Gefäßchirurgie, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Frank Lammert
- Medizinische Hochschule Hannover (MHH), Hannover, Deutschland
| | - Ingo Klein
- Chirurgische Klinik I, Universitätsklinikum Würzburg, Würzburg, Deutschland
| | - Gabriele Kirchner
- Klinik und Poliklinik für Chirurgie, Universitätsklinikum Regensburg und Innere Medizin I, Caritaskrankenhaus St. Josef Regensburg, Regensburg, Deutschland
| | - Markus Guba
- Klinik für Allgemeine, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Universitätsklinikum München, München, Deutschland
| | - Matthias Glanemann
- Klinik für Allgemeine, Viszeral-, Gefäß- und Kinderchirurgie, Universitätsklinikum des Saarlandes, Homburg, Deutschland
| | - Cornelius Engelmann
- Charité - Universitätsmedizin Berlin, Medizinische Klinik m. S. Hepatologie und Gastroenterologie, Campus Virchow-Klinikum (CVK) und Campus Charité Mitte (CCM), Berlin, Deutschland
| | - Ali E Canbay
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Deutschland
| | - Felix Braun
- Klinik für Allgemeine Chirurgie, Viszeral-, Thorax-, Transplantations- und Kinderchirurgie, Universitätsklinikum Schlewswig-Holstein, Kiel, Deutschland
| | - Christoph P Berg
- Innere Medizin I Gastroenterologie, Hepatologie, Infektiologie, Universitätsklinikum Tübingen, Tübingen, Deutschland
| | - Wolf O Bechstein
- Klinik für Allgemein- und Viszeralchirurgie, Universitätsklinikum Frankfurt, Frankfurt, Deutschland
| | - Thomas Becker
- Klinik für Allgemeine Chirurgie, Viszeral-, Thorax-, Transplantations- und Kinderchirurgie, Universitätsklinikum Schlewswig-Holstein, Kiel, Deutschland
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Chao CC, Tzeng SR, Chiang MC, Hsueh HW, Hsieh WJ, Chao YC, Cheng MF, Lin YH, Su MY, Huang CH, Wang YS, Hsieh MF, Tseng PH, Hsieh ST. Diflunisal versus tafamidis on neuropathy and cardiomyopathy in hereditary transthyretin amyloidosis. Ann Clin Transl Neurol 2024. [PMID: 39096004 DOI: 10.1002/acn3.52158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/11/2024] [Accepted: 07/12/2024] [Indexed: 08/04/2024] Open
Abstract
OBJECTIVES Hereditary transthyretin (TTR) amyloidosis (ATTRv) is frequently complicated by polyneuropathy (ATTRv-PN) and cardiomyopathy (ATTRv-CM). The long-term efficacy of diflunisal on both polyneuropathy and cardiomyopathy in ATTRv patients, especially those with non-V30M genotypes, has not been fully investigated and compared with that of tafamidis. METHODS We compared the structural and biochemical characteristics of A97S-TTR complexed with tafamidis with those of diflunisal, and prospectively followed up and compared the progression of polyneuropathy and cardiomyopathy between ATTRv-PN patients taking diflunisal and those taking tafamidis. RESULTS Both diflunisal and tafamidis effectively bind to the two thyroxine-binding sites at the A97S-TTR dimer-dimer interface and equally and almost sufficiently reduce amyloid fibril formation. Thirty-five ATTRv-PN patients receiving diflunisal and 22 patients receiving tafamidis were enrolled. Compared with no treatment, diflunisal treatment significantly delayed the transition of FAP Stage 1 to 2 and Stage 2 to 3 and decreased the deterioration in parameters of the ulnar nerve conduction study (NCS). The progression of FAP stage or NCS parameters did not differ between patients treated with diflunisal and those treated with tafamidis. Both diflunisal and tafamidis treatments significantly decreased radiotracer uptake on 99mTc-PYP SPECT and stabilized cardiac wall thickness and blood pro-B-type natriuretic peptide levels. No significant adverse events occurred during diflunisal or tafamidis treatment. INTERPRETATIONS The binding patterns of both tafamidis and diflunisal to A97S-TTR closely resembled those observed in the wild type. Diflunisal can effectively delay the progression of polyneuropathy and cardiomyopathy with similar efficacy to tafamidis and may become a cost-effective alternative treatment for late-onset ATTRv-PN.
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Affiliation(s)
- Chi-Chao Chao
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Shiou-Ru Tzeng
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Chang Chiang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsueh-Wen Hsueh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wan-Jen Hsieh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yuan-Chun Chao
- Department of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Mei-Fang Cheng
- Department of Nuclear Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Hung Lin
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Mao-Yuan Su
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Hsiang Huang
- Protein Diffraction Group, Experimental Facility Division, National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Yi-Shiang Wang
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Fang Hsieh
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ping-Huei Tseng
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Sung-Tsang Hsieh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Jain H, Reddy MMRK, Dey RC, Jain J, Shakhatreh Z, Manandhar S, Neupane P, Waleed MS, Yadav R, Sah BK, Mahawa R. Exploring Transthyretin Amyloid Cardiomyopathy: A Comprehensive Review of the Disease and Upcoming Treatments. Curr Probl Cardiol 2024; 49:102057. [PMID: 37640179 DOI: 10.1016/j.cpcardiol.2023.102057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023]
Abstract
Transthyretin amyloid cardiomyopathy (ATTR-CM) is a mutation-based genetic disorder due to the accumulation of unstable transthyretin protein and presents with symptoms of congestive heart failure (CHF) and numerous extracardiac symptoms like carpal tunnel syndrome and neuropathy. Two subtypes of ATTR-CM are hereditary and wild-type, both of which have different risk factors, gender prevalence and major clinical symptoms. Timely usage of imaging modalities like echocardiography, cardiac magnetic imaging resonance, and cardiac scintigraphy has made it possible to suspect ATTR-CM in patients presenting with CHF. Management of ATTR-CM includes appropriate treatment for heart failure for symptomatic relief, prevention of arrhythmias and heart transplantation for nonresponders. With the recent approval of tafamidis in the successful management of ATTR-CM, numerous potential therapeutic points have been identified to stop or delay the progression of ATTR-CM. This article aims to provide a comprehensive review of ATTR-CM and insights into its novel therapeutics and upcoming treatments.
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Affiliation(s)
- Hritvik Jain
- Department of Internal Medicine, All India Institute of Medical Sciences, Jodhpur, India.
| | | | - Rohit Chandra Dey
- Department of Internal Medicine, Altai State Medical University, Barnaul, Russia
| | - Jyoti Jain
- Department of Internal Medicine, All India Institute of Medical Sciences, Jodhpur, India
| | - Zaid Shakhatreh
- Department of Internal Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Sarbagya Manandhar
- Department of Internal Medicine, Nepal Medical College, Kathmandu, Nepal
| | - Purushottam Neupane
- Department of Internal Medicine, Punjab Medical College, Faisalabad, Pakistan
| | | | - Rukesh Yadav
- Department of Internal Medicine, Maharajgunj Medical Campus, Tribhuvan University, Institute of Medicine, Maharajgunj, Nepal
| | - Biki Kumar Sah
- Department of Internal Medicine, B.P. Koirala Institute of Health Sciences, Dharan, Nepal
| | - Rukam Mahawa
- Department of Internal Medicine, Government Medical College, Amritsar, India
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Plantone D, Primiano G, Righi D, Romano A, Luigetti M, De Stefano N. Current Evidence Supporting the Role of Immune Response in ATTRv Amyloidosis. Cells 2023; 12:2383. [PMID: 37830598 PMCID: PMC10572348 DOI: 10.3390/cells12192383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/23/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023] Open
Abstract
Hereditary transthyretin (ATTRv) amyloidosis with polyneuropathy, also known as familial amyloid polyneuropathy (FAP), represents a progressive, heterogeneous, severe, and multisystemic disease caused by pathogenic variants in the TTR gene. This autosomal-dominant neurogenetic disorder has an adult onset with variable penetrance and an inconstant phenotype, even among subjects carrying the same mutation. Historically, ATTRv amyloidosis has been viewed as a non-inflammatory disease, mainly due to the absence of any mononuclear cell infiltration in ex vivo tissues; nevertheless, a role of inflammation in its pathogenesis has been recently highlighted. The immune response may be involved in the development and progression of the disease. Fibrillary TTR species bind to the receptor for advanced glycation end products (RAGE), probably activating the nuclear factor κB (NF-κB) pathway. Moreover, peripheral blood levels of several cytokines, including interferon (IFN)-gamma, IFN-alpha, IL-6, IL-7, and IL-33, are altered in the course of the disease. This review summarizes the current evidence supporting the role of the immune response in ATTRv amyloidosis, from the pathological mechanisms to the possible therapeutic implications.
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Affiliation(s)
- Domenico Plantone
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (D.R.); (N.D.S.)
| | - Guido Primiano
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.P.); (A.R.); (M.L.)
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Delia Righi
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (D.R.); (N.D.S.)
| | - Angela Romano
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.P.); (A.R.); (M.L.)
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Marco Luigetti
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.P.); (A.R.); (M.L.)
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Nicola De Stefano
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (D.R.); (N.D.S.)
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Casasnovas C, Lladó L, Borrachero C, Pérez-Santamaría PV, Muñoz-Beamud F, Losada-López IA, Baliellas-Comellas MC, González-Moreno J. A narrative review and expert recommendations on the assessment of the clinical manifestations, follow-up, and management of post-OLT patients with ATTRv amyloidosis. Ther Adv Neurol Disord 2023; 16:17562864231191590. [PMID: 37655225 PMCID: PMC10467168 DOI: 10.1177/17562864231191590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/17/2023] [Indexed: 09/02/2023] Open
Abstract
Orthotopic liver transplantation (OLT) was the first treatment able to modify the natural course of hereditary transthyretin (ATTRv) amyloidosis, which is a rare and fatal disorder caused by the accumulation of misfolded transthyretin (TTR) variants in different organs and tissues and which leads to a progressive and multisystem dysfunction. Because the liver is the main source of TTR, OLT dramatically reduces the production of the pathogenic TTR variant, which should prevent amyloid formation and halt disease progression. However, amyloidosis progression may occur after OLT due to wild-type TTR deposition, especially in the nerves and heart. In this review, we discuss the disease features influencing OLT outcomes and the clinical manifestations of ATTRv amyloidosis progression post-OLT to improve our understanding of disease worsening after OLT and optimize the follow-up and clinical management of these patients. By conducting a literature review on the PubMed database, we identified patient characteristics that have been associated with worse post-OLT outcomes, including late-onset V50M and non-V50M variants, age >40 years, long disease duration, advanced neuropathy and autonomic dysfunction, and malnutrition. Regarding post-OLT mortality, deaths occurring within the first year after OLT were mainly associated with fatal graft complications and infectious diseases, whereas cardiovascular-related deaths usually occurred later. Considering the diverse clinical manifestations of ATTRv amyloidosis progression post-OLT, including worsening neuropathy and/or cardiomyopathy, autonomic dysfunction, and oculoleptomeningeal involvement, we present advice on the most relevant tests for assessing disease progression post-OLT. Finally, we discuss the use of new therapies based on TTR stabilizers and TTR mRNA silencers for the treatment of ATTRv amyloidosis patients post-OLT.
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Affiliation(s)
- Carlos Casasnovas
- Neuromuscular Unit, Department of Neurology, Bellvitge University Hospital-IDIBELL, C/ Feixa Llarga s/n, 08906 l’Hospitalet de Llobregat, Barcelona, Spain
| | - Laura Lladó
- Liver Transplant Unit, Department of Surgery, Bellvitge University Hospital, IDIBELL, Barcelona, Spain
| | - Cristina Borrachero
- ATTRv Unit, Department of Internal Medicine, Juan Ramón Jiménez Hospital, Huelva, Spain
| | | | | | | | | | - Juan González-Moreno
- Department of Internal Medicine, Son Llàtzer University Hospital, Palma de Mallorca, Spain
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Gu J, Wu Q, Zhang Q, You Q, Wang L. A decade of approved first-in-class small molecule orphan drugs: Achievements, challenges and perspectives. Eur J Med Chem 2022; 243:114742. [PMID: 36155354 DOI: 10.1016/j.ejmech.2022.114742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/01/2022] [Accepted: 09/01/2022] [Indexed: 12/01/2022]
Abstract
In the past decade (2011-2020), there was a growing interest in the discovery and development of orphan drugs for the treatment of rare diseases. However, rare diseases only account for a population of 0.65‰-1‰ which usually occur with previously unknown biological mechanisms and lack of specific therapeutics, thus to increase the demands for the first-in-class (FIC) drugs with new biological targets or mechanisms. Considering the achievements in the past 10 years, a total of 410 drugs were approved by U.S. Food and Drug Administration (FDA), which contained 151 FIC drugs and 184 orphan drugs, contributing to make up significant numbers of the approvals. Notably, more than 50% of FIC drugs are developed as orphan drugs and some of them have already been milestones in drug development. In this review, we aim to discuss the FIC small molecules for the development of orphan drugs case by case and highlight the R&D strategy with novel targets and scientific breakthroughs.
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Affiliation(s)
- Jinying Gu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qiuyu Wu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qiuyue Zhang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qidong You
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Lei Wang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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Schmidt HH, Wixner J, Planté‐Bordeneuve V, Muñoz‐Beamud F, Lladó L, Gillmore JD, Mazzeo A, Li X, Arum S, Jay PY, Adams D. Patisiran treatment in patients with hereditary transthyretin-mediated amyloidosis with polyneuropathy after liver transplantation. Am J Transplant 2022; 22:1646-1657. [PMID: 35213769 PMCID: PMC9310767 DOI: 10.1111/ajt.17009] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 02/11/2022] [Accepted: 02/11/2022] [Indexed: 01/25/2023]
Abstract
Hereditary transthyretin-mediated (hATTR) amyloidosis, or ATTRv amyloidosis, is a progressive disease, for which liver transplantation (LT) has been a long-standing treatment. However, disease progression continues post-LT. This Phase 3b, open-label trial evaluated efficacy and safety of patisiran in patients with ATTRv amyloidosis with polyneuropathy progression post-LT. Primary endpoint was median transthyretin (TTR) reduction from baseline. Twenty-three patients received patisiran for 12 months alongside immunosuppression regimens. Patisiran elicited a rapid, sustained TTR reduction (median reduction [Months 6 and 12 average], 91.0%; 95% CI: 86.1%-92.3%); improved neuropathy, quality of life, and autonomic symptoms from baseline to Month 12 (mean change [SEM], Neuropathy Impairment Score, -3.7 [2.7]; Norfolk Quality of Life-Diabetic Neuropathy questionnaire, -6.5 [4.9]; least-squares mean [SEM], Composite Autonomic Symptom Score-31, -5.0 [2.6]); and stabilized disability (Rasch-built Overall Disability Scale) and nutritional status (modified body mass index). Adverse events were mild or moderate; five patients experienced ≥1 serious adverse event. Most patients had normal liver function tests. One patient experienced transplant rejection consistent with inadequate immunosuppression, remained on patisiran, and completed the study. In conclusion, patisiran reduced serum TTR, was well tolerated, and improved or stabilized key disease impairment measures in patients with ATTRv amyloidosis with polyneuropathy progression post-LT (www.clinicaltrials.gov NCT03862807).
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Affiliation(s)
- Hartmut H. Schmidt
- Department of Gastroenterology, Hepatology and Transplant MedicineUniversity Hospital EssenUniversity of Duisburg‐Essen (formerly of University Hospital Munster, Munster, Germany)EssenGermany
| | - Jonas Wixner
- Department of Public Health and Clinical MedicineUmeå UniversityUmeåSweden
| | - Violaine Planté‐Bordeneuve
- Department of NeurologyEast Paris UniversityHospital Henri Mondor – Public Assistance Hospital of ParisCréteilFrance,Mondor Biomedical Research Institute – IMRBINSERMU955 Team 10 “Biology of the Neuro‐Muscular System”CréteilFrance
| | - Francisco Muñoz‐Beamud
- Hereditary Amyloidosis UnitDepartment of Internal MedicineJuan Ramón Jiménez HospitalHuelvaSpain
| | - Laura Lladó
- Liver Transplantation UnitDepartment of Surgery, and the Multidisciplinary Familial Amyloidosis UnitHospital Universitari de BellvitgeBarcelonaSpain,Biomedical Research InstituteIDIBELLUniversity of BarcelonaBarcelonaSpain
| | - Julian D. Gillmore
- National Amyloidosis CentreDivision of MedicineUniversity College London Medical SchoolLondonUK
| | - Anna Mazzeo
- Unit of Neurology and Neuromuscular DiseasesDepartment of Clinical and Experimental MedicineUniversity of MessinaMessinaItaly
| | - Xingyu Li
- Alnylam Pharmaceuticals, IncCambridgeMassachusettsUSA
| | - Seth Arum
- Alnylam Pharmaceuticals, IncCambridgeMassachusettsUSA
| | | | - David Adams
- Neurology DepartmentUniversité Paris‐SaclayU1195INSERMLe Kremlin BicêtreFrance,Neurology DepartmentAP‐HP, CHU BicêtreLe Kremlin BicêtreFrance
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Mejia Baranda J, Ljungberg J, Wixner J, Anan I, Oskarsson V. Epidemiology of hereditary transthyretin amyloidosis in the northernmost region of Sweden: a retrospective cohort study. Amyloid 2022; 29:120-127. [PMID: 35023433 DOI: 10.1080/13506129.2022.2026323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
INTRODUCTION Epidemiological data on hereditary transthyretin (ATTRv) amyloidosis from the northernmost region of Sweden (Norrbotten) are sparse. METHODS We reviewed the medical records of all incident cases of ATTRv amyloidosis in Norrbotten between 2006 and 2018. Official population and mortality statistics were used to estimate incidence rates and standardised mortality ratios (SMRs). RESULTS Ninety-three patients were diagnosed with ATTRv amyloidosis between 2006 and 2018 (median age, 72.8 years; 68.8% men; 95.7% Val30Met [p.Val50Met] mutation). The incidence rate per 100,000 persons and year increased from 1.50 (95% confidence interval [CI], 0.84-2.47) cases in 2006-2009 to 4.92 (95%CI, 3.46-6.78) cases in 2016-2018. The SMR in the ATTRv amyloidosis cohort was 2.64 times higher than in the general population in 2006-2018 (95%CI, 1.78-3.77). However, there were indications of lower SMRs over time (2006-2012, 2.96 [95%CI, 1.73-4.74]; 2013-2018, 2.32 [95%CI, 1.23-3.96]) and by use of disease-modifying drugs (no, 3.21 [95%CI, 1.87-5.13]; yes, 2.09 [95%CI, 1.08-3.64]). CONCLUSION The incidence of ATTRv amyloidosis increased 3-fold in Norrbotten between 2006 and 2018, most likely due to a previous underdiagnosis - with suggestions of lowered mortality during later years, possibly due to the introduction of disease-modifying drugs.
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Affiliation(s)
| | | | - Jonas Wixner
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Intissar Anan
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.,Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
| | - Viktor Oskarsson
- Piteå Research Unit, Region Norrbotten, Piteå, Sweden.,Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
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Carroll A, Dyck PJ, de Carvalho M, Kennerson M, Reilly MM, Kiernan MC, Vucic S. Novel approaches to diagnosis and management of hereditary transthyretin amyloidosis. J Neurol Neurosurg Psychiatry 2022; 93:668-678. [PMID: 35256455 PMCID: PMC9148983 DOI: 10.1136/jnnp-2021-327909] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 02/12/2022] [Indexed: 12/27/2022]
Abstract
Hereditary transthyretin amyloidosis (ATTRv) is a severe, adult-onset autosomal dominant inherited systemic disease predominantly affecting the peripheral and autonomic nervous system, heart, kidney and the eyes. ATTRv is caused by mutations of the transthyretin (TTR) gene, leading to extracellular deposition of amyloid fibrils in multiple organs including the peripheral nervous system. Typically, the neuropathy associated with ATTRv is characterised by a rapidly progressive and disabling sensorimotor axonal neuropathy with early small-fibre involvement. Carpal tunnel syndrome and cardiac dysfunction frequently coexist as part of the ATTRv phenotype. Although awareness of ATTRv polyneuropathy among neurologists has increased, the rate of misdiagnosis remains high, resulting in significant diagnostic delays and accrued disability. A timely and definitive diagnosis is important, given the emergence of effective therapies which have revolutionised the management of transthyretin amyloidosis. TTR protein stabilisers diflunisal and tafamidis can delay the progression of the disease, if treated early in the course. Additionally, TTR gene silencing medications, patisiran and inotersen, have resulted in up to 80% reduction in TTR production, leading to stabilisation or slight improvement of peripheral neuropathy and cardiac dysfunction, as well as improvement in quality of life and functional outcomes. The considerable therapeutic advances have raised additional challenges, including optimisation of diagnostic techniques and management approaches in ATTRv neuropathy. This review highlights the key advances in the diagnostic techniques, current and emerging management strategies, and biomarker development for disease progression in ATTRv.
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Affiliation(s)
- Antonia Carroll
- Brain and Mind Centre, Faculty of Medicine and Health, Translational Research Collective, University of Sydney and Department of Neurology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - P James Dyck
- Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Mamede de Carvalho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Department of Neurosciences and Mental Health, Hospital de Santa Maria, Lisboa, Portugal
| | - Marina Kennerson
- Northcott Neuroscience Laboratory, ANZAC Research Institute, Molecular Medicine Laboratory Concord Repatriation General Hospital, and Concord Clinical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Mary M Reilly
- MRC Centre for Neuromuscular Diseases, UCL Institute of Neurology and National Hospital for Neurology and Neurosurgery, London, UK
| | - Matthew C Kiernan
- Bushell Chair of Neurology, Brain and Mind Centre, University of Sydney, Sydney, New South Wales, Australia.,Neurology, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Steve Vucic
- Brain and Nerve Research Center, Concord Clinical School, The University of Sydney, Sydney, New South Wales, Australia
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Ocular Manifestations in a Chinese Pedigree of Familial Amyloidotic Polyneuropathy Carrying the Transthyretin Mutation c.401A>G (p.Tyr134Cys). Genes (Basel) 2022; 13:genes13050886. [PMID: 35627273 PMCID: PMC9140613 DOI: 10.3390/genes13050886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 02/05/2023] Open
Abstract
Familial amyloid polyneuropathy (FAP) caused by a genetic mutation in transthyretin (TTR) is an autosomal dominant hereditary disease. The retrospective, observational case series study presents the ocular clinicopathological findings of five cases carrying the TTR mutation c.401A>G (p.Tyr134Cys). Multimodal retinal imaging and electrophysiological examination, Congo red staining and immunohistochemical analysis of specimens, and genetic analyses were performed. Cases 1 and 2 were symptomatic with vitreous and retinal amyloid deposition and poor visual recovery. Case 3 had a symptomatic vitreous haze in the left eye with good postoperative visual recovery. The right eye of case 3 and the eyes of cases 4 and 5 were asymptomatic. Thicker retinal nerve fiber layer, retinal venous tortuosity with prolonged arteriovenous passage time on fluorescein angiography and retinal dysfunction detected by multifocal electroretinogram occurred even in asymptomatic eyes. Moreover, the internal limiting membrane from patients with FAP was stained positive for Congo red and transforming growth factor-β1. The results highlight the amyloid deposition of mutant TTR in the optic disc and retina, even in the asymptomatic stage. The deposited amyloid leads to increased resistance to venous return and retinal functional abnormalities. Therefore, careful follow-up of structural and functional changes in the retina is needed, even in asymptomatic patients with FAP.
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11
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A circulating, disease-specific, mechanism-linked biomarker for ATTR polyneuropathy diagnosis and response to therapy prediction. Proc Natl Acad Sci U S A 2021; 118:2016072118. [PMID: 33597308 DOI: 10.1073/pnas.2016072118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The transthyretin (TTR) amyloidoses (ATTR) are progressive, degenerative diseases resulting from dissociation of the TTR tetramer to monomers, which subsequently misfold and aggregate, forming a spectrum of aggregate structures including oligomers and amyloid fibrils. To determine whether circulating nonnative TTR (NNTTR) levels correlate with the clinical status of patients with V30M TTR familial amyloid polyneuropathy (FAP), we quantified plasma NNTTR using a newly developed sandwich enzyme-linked immunosorbent assay. The assay detected significant plasma levels of NNTTR in most presymptomatic V30M TTR carriers and in all FAP patients. NNTTR was not detected in age-matched control plasmas or in subjects with other peripheral neuropathies, suggesting NNTTR can be useful in diagnosing FAP. NNTTR levels were substantially reduced in patients receiving approved FAP disease-modifying therapies (e.g., the TTR stabilizer tafamidis, 20 mg once daily). This NNTTR decrease was seen in both the responders (average reduction 56.4 ± 4.2%; n = 49) and nonresponders (average reduction of 63.3 ± 4.8%; n = 32) at 12 mo posttreatment. Notably, high pretreatment NNTTR levels were associated with a significantly lower likelihood of clinical response to tafamidis. Our data suggest that NNTTR is a disease driver whose reduction is sufficient to ameliorate FAP so long as pretreatment NNTTR levels are below a critical clinical threshold.
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12
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Schettini AV, Llado L, Heimbach JK, Costello JG, Tranäng M, Van Caenegem O, Daly RC, Van den Bergh P, Casanovas C, Fabregat J, Poterucha JJ, Foguenne M, Ericzon BG, Lerut J. Symptomatic Val122del mutated hereditary transthyretin amyloidosis: Need for early diagnosis and prioritization for heart and liver transplantation. Hepatobiliary Pancreat Dis Int 2021; 20:323-329. [PMID: 34116942 DOI: 10.1016/j.hbpd.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 05/17/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Hereditary transthyretin (ATTRv) amyloidosis is an autosomal dominant disease linked to transthyretin gene mutations which cause instability of the transthyretin tetramer. After dissociation and misfolding they reassemble as insoluble fibrils (i.e. amyloid). Apart from the common Val30Met mutation there is a very heterogeneous group of non-Val30Met mutations. In some cases, the clinical picture is dominated by a rapidly evolving restrictive and hypertrophic cardiomyopathy. METHODS A case series of four liver recipients with the highly clinically relevant, rare and particularly aggressive Val122del mutation is presented. Medical and surgical therapeutic options, waiting list policy for ATTRv-amyloidosis, including the need for heart transplantation, and status of heart-liver transplantation are discussed. RESULTS Three patients needed a staged (1 patient) or simultaneous (2 patients) heart-liver transplant due to rapidly progressing cardiac failure and/or neurologic disability. Domino liver transplantation was impossible in two due to fibrotic hepatic transformation caused by cardiomyopathy. After a follow-up ranging from 3.5 to 9.5 years, cardiac (allograft) function was maintained in all patients, but neuropathy progressed in three patients, one of whom died after 80 months. CONCLUSIONS This is the first report in (liver) transplant literature about the rare Val122del ATTRv mutation. Due to its aggressiveness, symptomatic patients should be prioritized on the liver and, in cases with cardiomyopathy, heart waiting lists in order to avoid the irreversible neurological and cardiac damage that leads to a rapid lethal outcome.
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Affiliation(s)
- Adriano-Valerio Schettini
- Institute for Experimental and Clinical Research (IREC), Catholic University of Louvain (UCL), Avenue Hippocrate 55, Brussels 1200, Belgium
| | - Laura Llado
- Liver Transplant Unit, Department of Surgery, Hospital Universitari de Bellvitge, Calle de la Feixa Llarga, Barcelona 08907, Spain
| | - Julie K Heimbach
- Division of Transplantation Surgery, William J. von Liebig Transplant Center, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Jose Gonzalez Costello
- Advanced Heart Failure and Transplant Unit, Cardiology Department, Hospital Universitari de Bellvitge, Calle de la Feixa Llarga, Barcelona 08907, Spain
| | - Marie Tranäng
- Familial Amyloidotic Polyneuropathy World Transplant Registry (FAPWTR), Division of Transplantation Surgery, Karolinska Universitetssjukhuset Huddinge, F82, Karolinska Institutet, Stockholm 141 86, Sweden
| | - Olivier Van Caenegem
- Cardiothoracic Intensive Care Unit, Department of Cardiovascular Diseases, University Hospitals Saint-Luc - UCL, Avenue Hippocrate 10, Brussels 1200, Belgium
| | - Richard C Daly
- Cardiovascular Surgery Department, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Peter Van den Bergh
- Neuromuscular Reference Centre, University Hospital Saint-Luc - UCL, Avenue Hippocrate 10, Brussels 1200, Belgium
| | - Carlos Casanovas
- Neuromuscular Unit, Neurology Department, Hospital Universitari de Bellvitge, Calle de la Feixa Llarga, Barcelona 08907, Spain
| | - Joan Fabregat
- Liver Transplant Unit, Department of Surgery, Hospital Universitari de Bellvitge, Calle de la Feixa Llarga, Barcelona 08907, Spain
| | - John J Poterucha
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 1st St SW, Rochester MN 08907, USA
| | - Maxime Foguenne
- Institute for Experimental and Clinical Research (IREC), Catholic University of Louvain (UCL), Avenue Hippocrate 55, Brussels 1200, Belgium
| | - Bo Göran Ericzon
- Division of Transplantation Surgery, CLINTEC, Karolinska Universitetssjukhuset Huddinge, F82, Karolinska Institutet, Stockholm 14186, Sweden
| | - Jan Lerut
- Institute for Experimental and Clinical Research (IREC), Catholic University of Louvain (UCL), Avenue Hippocrate 55, Brussels 1200, Belgium.
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Russo M, Gentile L, Di Stefano V, Di Bella G, Minutoli F, Toscano A, Brighina F, Vita G, Mazzeo A. Use of Drugs for ATTRv Amyloidosis in the Real World: How Therapy Is Changing Survival in a Non-Endemic Area. Brain Sci 2021; 11:brainsci11050545. [PMID: 33925301 PMCID: PMC8146901 DOI: 10.3390/brainsci11050545] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/24/2021] [Accepted: 04/24/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Over the past decade, three new drugs have been approved for the treatment of hereditary amyloid transthyretin (ATTRv) polyneuropathy. The aim of this work was to analyze whether current therapies prolong survival for patients affected by ATTRv amyloidosis. Methods: The study was conducted retrospectively, analyzing the medical records of 105 patients with genetic diagnoses of familial amyloidotic polyneuropathy followed at the two referral centers for the disease in Sicily, Italy. Of these, 71 received disease-modifying therapy, while 34 received only symptomatic treatment or no therapy. Results: The most used treatment in our patient cohort was tafamidis, followed by liver transplantation, patisiran, inotersen, and diflunisal. The median survival was significantly longer for treated vs. untreated patients (12 years vs. 8 years). In the 71 patients who received disease-modifying treatment, the presence of cardiac involvement, weight loss, or autonomic dysfunction at diagnosis was not related to survival. Conversely, patients diagnosed in the early stage of the disease (PND 1) had significantly longer survival than those diagnosed in the late stage (PND 2–4).
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Affiliation(s)
- Massimo Russo
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy; (L.G.); (A.T.); (G.V.); (A.M.)
- Correspondence: ; Tel.: +39-09-0221-3504
| | - Luca Gentile
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy; (L.G.); (A.T.); (G.V.); (A.M.)
| | - Vincenzo Di Stefano
- Department of Biomedicine, Neuroscience and Advanced Diagnostic (BIND), University of Palermo, 90133 Palermo, Italy; (V.D.S.); (F.B.)
| | - Gianluca Di Bella
- Cardiology Unit, Department of Clinical and Experimental Medicine, AOU Policlinico G. Martino, University of Messina, 98122 Messina, Italy;
| | - Fabio Minutoli
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, 98122 Messina, Italy;
| | - Antonio Toscano
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy; (L.G.); (A.T.); (G.V.); (A.M.)
| | - Filippo Brighina
- Department of Biomedicine, Neuroscience and Advanced Diagnostic (BIND), University of Palermo, 90133 Palermo, Italy; (V.D.S.); (F.B.)
| | - Giuseppe Vita
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy; (L.G.); (A.T.); (G.V.); (A.M.)
| | - Anna Mazzeo
- Unit of Neurology and Neuromuscular Diseases, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy; (L.G.); (A.T.); (G.V.); (A.M.)
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Burton A, Castaño A, Bruno M, Riley S, Schumacher J, Sultan MB, See Tai S, Judge DP, Patel JK, Kelly JW. Drug Discovery and Development in Rare Diseases: Taking a Closer Look at the Tafamidis Story. Drug Des Devel Ther 2021; 15:1225-1243. [PMID: 33776421 PMCID: PMC7987260 DOI: 10.2147/dddt.s289772] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 01/20/2021] [Indexed: 12/25/2022] Open
Abstract
Rare diseases are increasingly recognized as a global public health priority. Governments worldwide currently provide important incentives to stimulate the discovery and development of orphan drugs for the treatment of these conditions, but substantial scientific, clinical, and regulatory challenges remain. Tafamidis is a first-in-class, disease-modifying transthyretin (TTR) kinetic stabilizer that represents a major breakthrough in the treatment of transthyretin amyloidosis (ATTR amyloidosis). ATTR amyloidosis is a rare, progressive, and fatal systemic disorder caused by aggregation of misfolded TTR and extracellular deposition of amyloid fibrils in various tissues and organs, including the heart and nervous systems. In this review, we present the successful development of tafamidis spanning 3 decades, marked by meticulous laboratory research into disease mechanisms and natural history, and innovative clinical study design and implementation. These efforts established the safety and efficacy profile of tafamidis, leading to its regulatory approval, and enabled post-approval initiatives that further support patients with ATTR amyloidosis.
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Affiliation(s)
| | | | | | - Steve Riley
- Clinical Pharmacology, Pfizer Inc, Groton, CT, USA
| | | | - Marla B Sultan
- Global Product Development, Pfizer Inc, New York, NY, USA
| | - Sandi See Tai
- Global Product Development, Pfizer Inc, Collegeville, PA, USA
| | - Daniel P Judge
- Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Jignesh K Patel
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA
| | - Jeffery W Kelly
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
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15
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Yilmaz A, Bauersachs J, Bengel F, Büchel R, Kindermann I, Klingel K, Knebel F, Meder B, Morbach C, Nagel E, Schulze-Bahr E, Aus dem Siepen F, Frey N. Diagnosis and treatment of cardiac amyloidosis: position statement of the German Cardiac Society (DGK). Clin Res Cardiol 2021; 110:479-506. [PMID: 33459839 PMCID: PMC8055575 DOI: 10.1007/s00392-020-01799-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/21/2020] [Indexed: 12/15/2022]
Abstract
Systemic forms of amyloidosis affecting the heart are mostly light-chain (AL) and transthyretin (ATTR) amyloidoses. The latter is caused by deposition of misfolded transthyretin, either in wild-type (ATTRwt) or mutant (ATTRv) conformation. For diagnostics, specific serum biomarkers and modern non-invasive imaging techniques, such as cardiovascular magnetic resonance imaging (CMR) and scintigraphic methods, are available today. These imaging techniques do not only complement conventional echocardiography, but also allow for accurate assessment of the extent of cardiac involvement, in addition to diagnosing cardiac amyloidosis. Endomyocardial biopsy still plays a major role in the histopathological diagnosis and subtyping of cardiac amyloidosis. The main objective of the diagnostic algorithm outlined in this position statement is to detect cardiac amyloidosis as reliably and early as possible, to accurately determine its extent, and to reliably identify the underlying subtype of amyloidosis, thereby enabling subsequent targeted treatment.
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Affiliation(s)
- A Yilmaz
- Sektion für Herzbildgebung, Klinik für Kardiologie, Universitätsklinikum Münster, Von-Esmarch-Str. 48, 48149, Münster, Germany.
| | - J Bauersachs
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - F Bengel
- Klinik für Nuklearmedizin, Medizinische Hochschule Hannover, Hannover, Germany
| | - R Büchel
- Klinik für Nuklearmedizin, Universitätsspital Zürich, Zurich, Switzerland
| | - I Kindermann
- Klinik für Innere Medizin III (Kardiologie, Angiologie und Internistische Intensivmedizin), Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes, Homburg, Germany
| | - K Klingel
- Institut für Pathologie und Neuropathologie, Universität Tübingen, Tübingen, Germany
| | - F Knebel
- Medizinische Klinik m.S. Kardiologie und Angiologie, Charite Universitätsmedizin Berlin Campus Mitte, Berlin, Germany
| | - B Meder
- Klinik für Innere Medizin III, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - C Morbach
- Klinik für Innere Medizin III, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - E Nagel
- Interdisziplinäres Amyloidosezentrum Nordbayern, Deutsches Zentrum für Herzinsuffizienz, Medizinische Klinik I der Universität Würzburg, Würzburg, Germany
| | - E Schulze-Bahr
- Institut für Experimentelle und translationale kardiovaskuläre Bildgebung, Universitätsklinikum Frankfurt, Frankfurt, Germany
| | - F Aus dem Siepen
- Institut für Genetik von Herzerkrankungen (IfGH), Universitätsklinikum Münster, Münster, Germany
| | - N Frey
- Klinik für Innere Medizin III, Schwerpunkt Kardiologie und Angiologie, Universitätsklinikum Schleswig-Holstein, Kiel, Germany.,Kommission für Klinische Kardiovaskuläre Medizin, Deutsche Gesellschaft für Kardiologie, Düsseldorf, Germany
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Koike H, Katsuno M. Transthyretin Amyloidosis: Update on the Clinical Spectrum, Pathogenesis, and Disease-Modifying Therapies. Neurol Ther 2020; 9:317-333. [PMID: 32948978 PMCID: PMC7500251 DOI: 10.1007/s40120-020-00210-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Indexed: 12/14/2022] Open
Abstract
ATTR amyloidosis is caused by systemic deposition of transthyretin (TTR) and comprises ATTRwt (wt for wild-type) amyloidosis, ATTRv (v for variant) amyloidosis, and acquired ATTR amyloidosis after domino liver transplantation. ATTRwt amyloidosis has classically been regarded as cardiomyopathy found in the elderly, whereas carpal tunnel syndrome has also become a major initial manifestation. The phenotypes of ATTRv amyloidosis are diverse and include neuropathy, cardiomyopathy, and oculoleptomeningeal involvement as the predominant features, depending on the mutation and age of onset. In addition to variant TTR, the deposition of wild-type TTR plays a significant role, even in patients with ATTRv amyloidosis. The formation of amyloid fibrils tends to occur in association with the basement membrane. The thickening or reduplication of the basement membrane surrounding endoneurial microvessels, which is similar to diabetic neuropathy, is observed in ATTRv amyloidosis, suggesting that common mechanisms, such as an accumulation of advanced glycation end products, may participate in the disease process. In addition to direct damage caused by amyloid fibrils, recent studies have suggested that the toxicity of nonfibrillar TTRs, such as TTR oligomers, participates in the process of tissue damage. Although liver transplantation has been performed for patients with ATTRv amyloidosis since 1990, late-onset patients were not eligible for this treatment. However, as the efficacy of orally administered tafamidis and diflunisal, which stabilize TTR tetramers, was suggested in the early 2010s, such late-onset patients have also become targets for disease-modifying therapies. Additionally, recent studies of small interfering RNA (patisiran) and antisense oligonucleotide (inotersen) therapies have demonstrated the efficacy of these gene-silencing agents. A strategy for monitoring patients that enables the choice of an appropriate treatment from comprehensive and long-term viewpoints should be established. As many patients with ATTR amyloidosis are aged and have heart failure, they are at increased risk of aggravation if they are infected by SARS-CoV2. The optimal interval of evaluation should also be considered, particularly in this COVID-19 era.
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Affiliation(s)
- Haruki Koike
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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González-Duarte A, Conceição I, Amass L, Botteman MF, Carter JA, Stewart M. Impact of Non-Cardiac Clinicopathologic Characteristics on Survival in Transthyretin Amyloid Polyneuropathy. Neurol Ther 2020; 9:135-149. [PMID: 32232748 PMCID: PMC7229108 DOI: 10.1007/s40120-020-00183-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Indexed: 02/02/2023] Open
Abstract
INTRODUCTION Hereditary (variant) transthyretin amyloidosis (ATTRv) with polyneuropathy (ATTR-PN) is a rare genetic disorder that causes progressive autonomic and sensorimotor neuropathy, severe disability, and death within 10 years of onset. Previous studies have primarily focused on how baseline cardiac characteristics affect mortality, but the impact of non-cardiac baseline characteristics is less defined. METHODS We systematically searched PubMed/Medline (1990-2019) to identify studies that assessed the impact of baseline ATTR-PN characteristics on survival. Outcomes were first summarized descriptively. Extracted survival data were then disaggregated, and parametric mixture models were used to assess survival differences among patient groups defined by factors known to affect survival. RESULTS The search yielded 1193 records, of which 35 were retained for analysis. Median survival ranged from 0.5 to > 25 years. The largest survival differences were between cohorts who underwent liver transplantation (LTx) versus those who did not. Among LTx cohorts, pre-LTx ATTR-PN disease duration ≥ 7 years, poor nutritional status, and late disease onset reduced median survival by 13, 12, and 10 years, respectively. Other prognostic survival factors included non-Val30Met genotype and baseline presence of urinary incontinence, erectile dysfunction, or muscle weakness. CONCLUSION Survival in patients with ATTR-PN is highly variable and affected by non-cardiac baseline characteristics, such as autonomic dysfunction, large fiber involvement, late-onset disease, and non-Val30Met mutation. Careful interpretation of these findings is warranted given that this synthesis did not control for differences between studies. Survival in patients with ATTR-PN remains poor among those who are untreated or with delayed diagnosis.
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Affiliation(s)
| | - Isabel Conceição
- Department of Neurosciences and Mental Health, Hospital de Santa Maria-Centro Hospitalar Lisboa Norte (CHULN), Lisbon, Portugal
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
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18
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Cuddy SA, Falk RH. Amyloidosis as a Systemic Disease in Context. Can J Cardiol 2020; 36:396-407. [DOI: 10.1016/j.cjca.2019.12.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022] Open
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Schwartzlow C, Kazamel M. Hereditary Transthyretin Amyloidosis: Clinical Presentation and Management Updates. J Clin Neuromuscul Dis 2020; 21:144-156. [PMID: 32073460 DOI: 10.1097/cnd.0000000000000270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hereditary transthyretin amyloidosis, once a rare progressive neuropathy and/or cardiomyopathy, is now recognized with increasing worldwide frequency, various phenotypes, and over 130 gene mutations identified to date. This inherited disorder develops as a result of mutated transthyretin amyloid aggregation and systematic deposition throughout the body. With increasing knowledge about the pathophysiology of this disease, new disease-modifying therapies are being developed. In addition to slowing progression, these new agents were found to improve quality of life and reduce the severity of neuropathic symptoms. Two new gene-modifying therapies recently received Food and Drug Administration approval following the positive results from phase III trials. These include an antisense oligonucleotide, inotersen, and small interfering RNA, patisiran, which were reported to reduce the production of transthyretin and had promising safety profiles. Additional novel therapies are being explored with hopes to prolong survival. Therefore, early diagnosis of this treatable disorder has become increasingly important in clinical practice.
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Affiliation(s)
- Coreen Schwartzlow
- Department of Neurology, The University of Alabama at Birmingham, Birmingham, AL
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20
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Merlini G, Coelho T, Waddington Cruz M, Li H, Stewart M, Ebede B. Evaluation of Mortality During Long-Term Treatment with Tafamidis for Transthyretin Amyloidosis with Polyneuropathy: Clinical Trial Results up to 8.5 Years. Neurol Ther 2020; 9:105-115. [PMID: 32107748 PMCID: PMC7229124 DOI: 10.1007/s40120-020-00180-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Indexed: 12/17/2022] Open
Abstract
Introduction The effects of tafamidis on mortality in Val30Met and non-Val30Met patients with transthyretin amyloidosis with polyneuropathy (ATTR-PN) were evaluated. Methods The analyses were based on cumulative data from the Val30Met patients in the 18-month double-blind registration study and its 12-month open-label extension study, the non-Val30Met patients of the 12-month open-label study, and both patient groups in the ongoing 10-year extension study. Kaplan–Meier analyses of time to death from first treatment dose were performed. For the Val30Met group, two treatment groups were analyzed: those who received tafamidis in both the parent and extension studies (T–T) and those who received placebo in the parent study and switched to tafamidis in the extension studies (P–T). Results Kaplan–Meier estimates (95% confidence interval [CI]) were available up to 9 years for the Val30Met group, at which time 85.9% (53.1–96.4) and 91.1% (77.9–96.6) of the patients in the T–T and P–T groups, respectively, were alive. For the non-Val30Met group, estimates were available up to 8 years from the first dose, and the percentage of patients alive was 75.9% (47.7–90.2). Conclusion Long-term tafamidis treatment may confer survival benefit in patients with ATTR-PN. Trial registration ClinicalTrials.gov identifier: NCT00409175, NCT00791492, NCT00630864, and NCT00925002.
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Affiliation(s)
- Giampaolo Merlini
- Foundation IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Teresa Coelho
- Andrade's Centre, Hospital Santo António, Centro Hospitalar do Porto, Porto, Portugal
| | - Márcia Waddington Cruz
- CEPARM National Amyloidosis Referral Center, University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Inês M, Coelho T, Costa J. Author response: Natural history and survival in stage 1 Val30Met transthyretin familial amyloid polyneuropathy. Neurology 2019; 93:229. [DOI: 10.1212/wnl.0000000000007876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hereditary transthyretin amyloidosis: a model of medical progress for a fatal disease. Nat Rev Neurol 2019; 15:387-404. [PMID: 31209302 DOI: 10.1038/s41582-019-0210-4] [Citation(s) in RCA: 248] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2019] [Indexed: 02/06/2023]
Abstract
Hereditary amyloidogenic transthyretin (ATTRv) amyloidosis with polyneuropathy (also known as familial amyloid polyneuropathy) is a condition with adult onset caused by mutation of transthyretin (TTR) and characterized by extracellular deposition of amyloid and destruction of the somatic and autonomic PNS, leading to loss of autonomy and death. This disease represents a model of the scientific and medical progress of the past 30 years. ATTRv amyloidosis is a worldwide disease with broad genetic and phenotypic heterogeneity that presents a diagnostic challenge for neurologists. The pathophysiology of the neuropathy is increasingly understood and includes instability and proteolysis of mutant TTR leading to deposition of amyloid with variable lengths of fibrils, microangiopathy and involvement of Schwann cells. Wild-type TTR is amyloidogenic in older individuals. The main symptoms are neuropathic, but the disease is systemic; neurologists should be aware of cardiac, eye and kidney involvement that justify a multidisciplinary approach to management. Infiltrative cardiomyopathy is usually latent but present in half of patients. Disease-modifying therapeutics that have been developed include liver transplantation and TTR stabilizers, both of which can slow progression of the disease and increase survival in the early stages. Most recently, gene-silencing drugs have been used to control disease in the more advanced stages and produce some degree of improvement.
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Koike H, Fukami Y, Nishi R, Kawagashira Y, Iijima M, Sobue G, Katsuno M. Clinicopathological spectrum and recent advances in the treatment of hereditary transthyretin amyloidosis. ACTA ACUST UNITED AC 2019. [DOI: 10.1111/ncn3.12306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Haruki Koike
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Yuki Fukami
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Ryoji Nishi
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Yuichi Kawagashira
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Masahiro Iijima
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Gen Sobue
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
- Research Division of Dementia and Neurodegenerative Disease Nagoya University Graduate School of Medicine Nagoya Japan
| | - Masahisa Katsuno
- Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
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Abstract
Transthyretin (TTR) related cardiomyopathy is an underdiagnosed cause of heart failure but is increasingly recognized in various settings - from patients admitted with heart failure to symptomatic aortic stenosis - and is rapidly becoming the most frequent form of systemic amyloidosis. Following the recent publication of the landmark ATTR-ACT trial that showed tafamidis to be the first treatment to improve survival in patients with TTR-related cardiac amyloidosis and heart failure, we reviewed the drug's rationale, characteristics and evidence supporting its use in TTR amyloidosis.
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Affiliation(s)
- Massimiliano Lorenzini
- University College London Institute for Cardiovascular Science & Barts Heart Centre, St Bartholomew's Hospital, London, UK.,Cardiology, Department of Experimental, Diagnostic & Specialty Medicine, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Perry M Elliott
- University College London Institute for Cardiovascular Science & Barts Heart Centre, St Bartholomew's Hospital, London, UK
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Ultrastructure in Transthyretin Amyloidosis: From Pathophysiology to Therapeutic Insights. Biomedicines 2019; 7:biomedicines7010011. [PMID: 30764529 PMCID: PMC6466231 DOI: 10.3390/biomedicines7010011] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 01/04/2023] Open
Abstract
Transthyretin (TTR) amyloidosis is caused by systemic deposition of wild-type or variant amyloidogenic TTR (ATTRwt and ATTRv, respectively). ATTRwt amyloidosis has traditionally been termed senile systemic amyloidosis, while ATTRv amyloidosis has been called familial amyloid polyneuropathy. Although ATTRwt amyloidosis has classically been regarded as one of the causes of cardiomyopathy occurring in the elderly population, recent developments in diagnostic techniques have significantly expanded the concept of this disease. For example, this disease is now considered an important cause of carpal tunnel syndrome in the elderly population. The phenotypes of ATTRv amyloidosis also vary depending on the mutation and age of onset. Peripheral neuropathy usually predominates in patients from the conventional endemic foci, while cardiomyopathy or oculoleptomeningeal involvement may also become major problems in other patients. Electron microscopic studies indicate that the direct impact of amyloid fibrils on surrounding tissues leads to organ damage, whereas accumulating evidence suggests that nonfibrillar TTR, such as oligomeric TTR, is toxic, inducing neurodegeneration. Microangiopathy has been suggested to act as an initial lesion, increasing the leakage of circulating TTR. Regarding treatments, the efficacy of liver transplantation has been established for ATTRv amyloidosis patients, particularly patients with early-onset amyloidosis. Recent phase III clinical trials have shown the efficacy of TTR stabilizers, such as tafamidis and diflunisal, for both ATTRwt and ATTRv amyloidosis patients. In addition, a short interfering RNA (siRNA), patisiran, and an antisense oligonucleotide (ASO), inotersen, have been shown to be effective for ATTRv amyloidosis patients. Given their ability to significantly reduce the production of both wild-type and variant TTR in the liver, these gene-silencing drugs seem to be the optimal therapeutic option for ATTR amyloidosis. Hence, the long-term efficacy and tolerability of novel therapies, particularly siRNA and ASO, must be determined to establish an appropriate treatment program.
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Finsterer J, Iglseder S, Wanschitz J, Topakian R, Löscher WN, Grisold W. Hereditary transthyretin-related amyloidosis. Acta Neurol Scand 2019; 139:92-105. [PMID: 30295933 DOI: 10.1111/ane.13035] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/09/2018] [Accepted: 09/04/2018] [Indexed: 12/15/2022]
Abstract
Hereditary transthyretin(TTR)-related amyloidosis (ATTRm amyloidosis) is an endemic/non-endemic, autosomal-dominant, early- and late-onset, rare, progressive disorder, predominantly manifesting as length-dependent, small fiber dominant, axonal polyneuropathy and frequently associated with cardiac disorders and other multisystem diseases. ATTRm amyloidosis is due to variants in the TTR gene, with the substitution Val30Met as the most frequent mutation. TTR mutations lead to destabilization and dissociation of TTR tetramers into variant TTR monomers, and formation of amyloid fibrils, which are consecutively deposited extracellularly in various tissues, such as nerves, heart, brain, eyes, intestines, kidneys, or the skin. Neuropathy may not only include large nerve fibers but also small fibers, and not only sensory and motor fibers but also autonomic fibers. Types of TTR variants, age at onset, penetrance, and clinical presentation vary between geographical areas. Suggestive of a ATTRm amyloidosis are a sensorimotor polyneuropathy, positive family history, autonomic dysfunction, cardiomyopathy, carpal tunnel syndrome, unexplained weight loss, and resistance to immunotherapy. If only sensory A-delta or C fibers are affected, small fiber neuropathy ensues. Diagnostic tests for small fiber neuropathy include determination of intraepidermal nerve fiber density, laser-evoked potentials, heat- and cold-detection thresholds, and measurement of the electrochemical skin conductance. Therapy currently relies on liver transplantation and TTR-stabilizers (tafamidis, diflunisal).
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Affiliation(s)
| | | | - Julia Wanschitz
- Department of Neurology; Medical University Innsbruck; Innsbruck Austria
| | - Raffi Topakian
- Department of Neurology; Klinikum Wels-Grieskirchen; Wels Austria
| | | | - Wolfgang Grisold
- Ludwig Boltzmann Institute for Experimental und Clinical Traumatology; Vienna Austria
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Zhao Y, Xin Y, Song Z, He Z, Hu W. Tafamidis, a Noninvasive Therapy for Delaying Transthyretin Familial Amyloid Polyneuropathy: Systematic Review and Meta-Analysis. J Clin Neurol 2019; 15:108-115. [PMID: 30618225 PMCID: PMC6325356 DOI: 10.3988/jcn.2019.15.1.108] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/23/2018] [Accepted: 09/28/2018] [Indexed: 12/21/2022] Open
Abstract
Background and Purpose Tafamidis functions to delay the loss of function in transthyretin familial amyloid polyneuropathy (TTR-FAP), which is a rare inherited amyloidosis with progressive sensorimotor and autonomic polyneuropathy. This systematic literature review and meta-analysis evaluated the efficacy and safety of tafamidis in TTR-FAP patients, with the aim of improving the evidence-based medical evidence of this treatment option for TTP-FAP. Methods A systematic search of the English-language literature in five databases was performed through to May 31, 2018 by two reviewers who independently extracted data and assessed the risk of bias. We extracted efficacy and safety outcomes and performed a meta-analysis. Statistical tests were performed to check for heterogeneity and publication bias. Results The meta-analysis identified six relevant studies. The tafamidis group showed smaller changes from baseline in the Neuropathy Impairment Score–Lower Limbs [mean difference (MD)=−3.01, 95% confidence interval (CI)=−3.26 to −2.75, p<0.001] and the Norfolk Quality of Life-Diabetic Neuropathy total quality of life score (MD=−6.67, 95% CI=−9.70 to −3.64, p<0.001), and a higher modified body mass index (MD=72.45, 95% CI=69.41 to 75.49, p<0.001), with no significant difference in total adverse events [odds ratio (OR)=0.69, 95% CI=0.35 to 1.35, p=0.27]. The incidence of adverse events did not differ between tafamidis and placebo treatment except for fatigue (OR=0.13, 95% CI=0.02 to 0.72, p=0.02) and hypesthesia (OR=0.16, 95% CI=0.03 to 0.92, p=0.04). Conclusions This systematic review and meta-analysis has demonstrated that tafamidis delays neurologic progression and preserves a better nutritional status and the quality of life. The rates of adverse events did not differ between the patients in the tafamidis and placebo groups. Tafamidis might be a safer noninvasive option for patients with TTR-FAP.
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Affiliation(s)
- Yinan Zhao
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yanguo Xin
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhuyin Song
- Department of Neurology, The People's Hospital of Liaoning Province, Shenyang, China
| | - Zhiyi He
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Wenyu Hu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China.
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Coelho T, Inês M, Conceição I, Soares M, de Carvalho M, Costa J. Natural history and survival in stage 1 Val30Met transthyretin familial amyloid polyneuropathy. Neurology 2018; 91:e1999-e2009. [PMID: 30333157 DOI: 10.1212/wnl.0000000000006543] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 08/10/2018] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To assess the natural history and treatment effect on survival among patients with transthyretin-associated familial amyloid polyneuropathy (TTR-FAP) stage 1 Val30Met. METHODS Multi-institutional, hospital-based study of patients with TTR-FAP Val30Met prospectively followed up until December 2016, grouped into untreated (n = 1,771), liver transplant (LTx)-treated (n = 957), or tafamidis-treated (n = 432) cohorts. Standardized mortality ratios, Kaplan-Meier, and Cox methods were used to estimate excess mortality, survival, and adjusted hazard ratios (HRs) for all-cause mortality. RESULTS Disease-modifying treatments decreased TTR-FAP excess mortality from 10 to 4 (standardized mortality ratio 3.92, 95% confidence interval [CI] 2.64-5.59). Median overall survival of untreated and LTx-treated cohorts was 11.61 (95% CI 11.14-11.87) and 24.73 years (95% CI 22.90-27.09), respectively, and was not reached in the tafamidis-treated cohort (maximum follow-up, 10 years). Both disease-modifying treatments improved survival. Among early-onset patients (younger than 50 years of age), tafamidis reduced the mortality risk compared with untreated patients by 91% (HR 0.09, 95% CI 0.03-0.25, p < 0.001) and with LTx-treated patients by 63% (HR 0.37, 95% CI 0.14-1.00, p = 0.050). Previous tafamidis treatment did not affect mortality risk after LTx (HR 0.83, 95% CI 0.25-2.78, p = 0.763). Among late-onset patients (50 years and older), tafamidis reduced mortality risk by 82% compared with untreated patients (HR 0.18, 95% CI 0.06-0.49, p = 0.001). CONCLUSION LTx and tafamidis convey substantial survival benefits, but TTR-FAP mortality remains higher than in the general population. These results strongly reinforce the importance of timely diagnosis and earlier treatment, boosting the pursuit for an increased life expectancy. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that for patients with stage 1 Val30Met TTR-FAP, LTx and tafamidis increase survival.
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Affiliation(s)
- Teresa Coelho
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK
| | - Mónica Inês
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK
| | - Isabel Conceição
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK
| | - Marta Soares
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK
| | - Mamede de Carvalho
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK
| | - João Costa
- From the Andrade's Center for Familial Amyloidosis and Department of Neurosciences (T.C.), Hospital de Santo António, Centro Hospitalar do Porto; Instituto de Medicina Molecular (M.I., I.C., M.d.C., J.C.), Laboratório de Farmacologia Clínica e Terapêutica (J.C.), and Centro de Estudos de Medicina Baseada na Evidência (J.C.), Faculdade de Medicina, Universidade de Lisboa; Department of Neurosciences and Mental Health (I.C., M.d.C.), Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Portugal; and Centre for Health Economics (M.S.), University of York, UK.
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A chemometric approach for characterization of serum transthyretin in familial amyloidotic polyneuropathy type I (FAP-I) by electrospray ionization-ion mobility mass spectrometry. Talanta 2018; 181:87-94. [DOI: 10.1016/j.talanta.2017.12.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 01/19/2023]
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Sekijima Y, Ueda M, Koike H, Misawa S, Ishii T, Ando Y. Diagnosis and management of transthyretin familial amyloid polyneuropathy in Japan: red-flag symptom clusters and treatment algorithm. Orphanet J Rare Dis 2018; 13:6. [PMID: 29343286 PMCID: PMC5773042 DOI: 10.1186/s13023-017-0726-x] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 11/23/2017] [Indexed: 01/05/2023] Open
Abstract
Hereditary ATTR (ATTRm) amyloidosis (also called transthyretin-type familial amyloid polyneuropathy [ATTR-FAP]) is an autosomal-dominant, adult-onset, rare systemic disorder predominantly characterized by irreversible, progressive, and persistent peripheral nerve damage. TTR gene mutations (e.g. replacement of valine with methionine at position 30 [Val30Met (p.Val50Met)]) lead to destabilization and dissociation of TTR tetramers into variant TTR monomers, which form amyloid fibrils that deposit in peripheral nerves and various organs, giving rise to peripheral and autonomic neuropathy and several non-disease specific symptoms. Phenotypic and genetic variability and non–disease-specific symptoms often delay diagnosis and lead to misdiagnosis. Red-flag symptom clusters simplify diagnosis globally. However, in Japan, types of TTR variants, age of onset, penetrance, and clinical symptoms of Val30Met are more varied than in other countries. Hence, development of a Japan-specific red-flag symptom cluster is warranted. Presence of progressive peripheral sensory-motor polyneuropathy and ≥1 red-flag sign/symptom (e.g. family history, autonomic dysfunction, cardiac involvement, carpal tunnel syndrome, gastrointestinal disturbances, unexplained weight loss, and immunotherapy resistance) suggests ATTR-FAP. Outside of Japan, pharmacotherapeutic options are first-line therapy. However, because of positive outcomes (better life expectancy and higher survival rates) with living donor transplant in Japan, liver transplantation remains first-line treatment, necessitating a Japan-specific treatment algorithm. Herein, we present a consolidated review of the ATTR-FAP Val30Met landscape in Japan and summarize findings from a medical advisory board meeting held in Tokyo on 18th August 2016, at which a Japan-specific ATTR-FAP red-flag symptom cluster and treatment algorithm was developed. Beside liver transplantation, a TTR-stabilizing agent (e.g. tafamidis) is a treatment option. Early diagnosis and timely treatment using the Japan-specific red-flag symptom cluster and treatment algorithm might help guide clinicians regarding apt and judicious use of available treatment modalities.
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Affiliation(s)
- Yoshiki Sekijima
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto-shi, Kumamoto, 860-8556, Japan
| | - Haruki Koike
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Sonoko Misawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | | | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto-shi, Kumamoto, 860-8556, Japan.
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Yamashita T, Ueda M, Misumi Y, Masuda T, Nomura T, Tasaki M, Takamatsu K, Sasada K, Obayashi K, Matsui H, Ando Y. Genetic and clinical characteristics of hereditary transthyretin amyloidosis in endemic and non-endemic areas: experience from a single-referral center in Japan. J Neurol 2017; 265:134-140. [PMID: 29177547 DOI: 10.1007/s00415-017-8640-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 09/27/2017] [Accepted: 09/30/2017] [Indexed: 12/14/2022]
Abstract
Hereditary transthyretin (ATTR) amyloidosis is a life-threatening, autosomal dominant, systemic amyloidosis caused by mutant transthyretin. In addition to ATTRV30M in endemic and non-endemic areas, more than 140 non-V30M mutations occur worldwide. The aim of this study was to analyze the clinical characteristics and genetic frequencies of hereditary ATTR amyloidosis. Diagnostic results and clinical manifestations of hereditary ATTR amyloidosis from April 1, 2012, to March 31, 2017, at Amyloidosis Medical Practice Center, Kumamoto University Hospital were analyzed. One hundred and four patients received a diagnosis of symptomatic hereditary ATTR amyloidosis. The following mutations of the TTR gene and their percentages were found: V30M in endemic areas, 10.6%; V30M in non-endemic areas, 51.0%; and non-V30M, 38.5%. The ages at onset of patients with ATTRV30M amyloidosis in non-endemic areas (66.6 ± 8.7 years) and those with non-V30M ATTR amyloidosis (55.8 ± 13.6 years) were significantly higher than those with ATTRV30M amyloidosis in endemic areas (37.0 ± 12.6 years). Of patients with ATTRV30M amyloidosis in endemic and non-endemic areas, and non-V30M ATTR amyloidosis, 63.6, 66.0, and 27.5% initially presented with polyneuropathy, respectively. Of patients with ATTRV30M amyloidosis in endemic areas, 81.8% had a family history of this disease. However, a significantly smaller percentage of patients with ATTRV30M amyloidosis (30.0%) in non-endemic areas and non-V30M ATTR amyloidosis (34.0%) had a family history. Patients with ATTRV30M amyloidosis in non-endemic areas and patients with non-V30M ATTR amyloidosis occurred more frequently than previously believed, and their clinical manifestations were diverse.
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Affiliation(s)
- Taro Yamashita
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. .,Amyloidosis Medical Practice Center, Kumamoto University Hospital, Kumamoto, Japan.
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Yohei Misumi
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Teruaki Masuda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Toshiya Nomura
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Masayoshi Tasaki
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan.,Department of Morphological and Physiological Sciences, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kotaro Takamatsu
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Keiko Sasada
- Division of Genetic Diagnosis, Department of Laboratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Konen Obayashi
- Department of Morphological and Physiological Sciences, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hirotaka Matsui
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
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Adams D, Suhr OB, Dyck PJ, Litchy WJ, Leahy RG, Chen J, Gollob J, Coelho T. Trial design and rationale for APOLLO, a Phase 3, placebo-controlled study of patisiran in patients with hereditary ATTR amyloidosis with polyneuropathy. BMC Neurol 2017; 17:181. [PMID: 28893208 PMCID: PMC5594468 DOI: 10.1186/s12883-017-0948-5] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 08/22/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Patisiran is an investigational RNA interference (RNAi) therapeutic in development for the treatment of hereditary ATTR (hATTR) amyloidosis, a progressive disease associated with significant disability, morbidity, and mortality. METHODS Here we describe the rationale and design of the Phase 3 APOLLO study, a randomized, double-blind, placebo-controlled, global study to evaluate the efficacy and safety of patisiran in patients with hATTR amyloidosis with polyneuropathy. Eligible patients are 18-85 years old with hATTR amyloidosis, investigator-estimated survival of ≥2 years, Neuropathy Impairment Score (NIS) of 5-130, and polyneuropathy disability score ≤IIIb. Patients are randomized 2:1 to receive either intravenous patisiran 0.3 mg/kg or placebo once every 3 weeks. The primary objective is to determine the efficacy of patisiran at 18 months based on the difference in the change in modified NIS+7 (a composite measure of motor strength, sensation, reflexes, nerve conduction, and autonomic function) between the patisiran and placebo groups. Secondary objectives are to evaluate the effect of patisiran on Norfolk-Diabetic Neuropathy quality of life questionnaire score, nutritional status (as evaluated by modified body mass index), motor function (as measured by NIS-weakness and timed 10-m walk test), and autonomic symptoms (as measured by the Composite Autonomic Symptom Score-31 questionnaire). Exploratory objectives include assessment of cardiac function and pathologic evaluation to assess nerve fiber innervation and amyloid burden. Safety of patisiran will be assessed throughout the study. DISCUSSION APOLLO represents the largest randomized, Phase 3 study to date in patients with hATTR amyloidosis, with endpoints that capture the multisystemic nature of this disease. TRIAL REGISTRATION This trial is registered at clinicaltrials.gov ( NCT01960348 ); October 9, 2013.
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Affiliation(s)
- David Adams
- CHU Hôpital Bicêtre, Le Kremlin-Bicêtre CEDEX, Paris, France
| | - Ole B. Suhr
- Department of Public Health and Clinical Medicine, Umeå University Hospital, Umeå, Sweden
| | - Peter J. Dyck
- Department of Neurology, Mayo Clinic, Rochester, MN USA
| | | | | | | | | | - Teresa Coelho
- Hospital Santo António, Centro Hospitalar do Porto, Porto, Portugal
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Freitas Castro V, Nascimento Alves P, Franco AC, Martins IP, Conceição I. Cognitive impairment in liver transplanted patients with transthyretin-related hereditary amyloid polyneuropathy. Amyloid 2017; 24:110-114. [PMID: 28590781 DOI: 10.1080/13506129.2017.1335639] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION AND AIM Hereditary transthyretin-related amyloidosis (ATTR-FAP) is characterized by a progressive neuropathy, cardiomyopathy, nephropathy and ocular disease. More than 90% of amyloidogenic transthyretin is produced by the liver; however, this protein is also synthesized in the choroid plexus. Although some patients have transitory neurologic events, the impact on cognition is still unknown. The aim was to study the cognitive performance of ATTR-FAP V30M patients with long disease course. METHODS A prospective observational study of a consecutive sample of patients with 10 or more years of disease duration was conducted. All patients underwent an extensive neuropsychological evaluation. RESULTS Sixteen patients were included, with a mean age of 53 years and mean duration of disease of 18 years. All had been submitted to liver transplantation. The functional status was not incapacitating in the majority, with 75% needing at most a stick to walk and 38% still actively working. The neuropsychological evaluation disclosed episodic memory impairments in 31% and executive dysfunction in 25% of patients. CONCLUSIONS These novel findings suggest that cognitive dysfunction can be a delayed manifestation of hereditary transthyretin-related amyloidosis. The putative relation of cognitive dysfunction with transthyretin-amyloid deposition can provide another model to study the amyloid hypothesis of cognitive impairment.
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Affiliation(s)
- Vanda Freitas Castro
- a Language Research Laboratory, Faculty of Medicine , University of Lisbon , Lisbon , Portugal
| | - Pedro Nascimento Alves
- a Language Research Laboratory, Faculty of Medicine , University of Lisbon , Lisbon , Portugal.,b Department of Neurosciences, Neurology , Hospital de Santa Maria, CHLN , Lisbon , Portugal
| | - Ana Catarina Franco
- b Department of Neurosciences, Neurology , Hospital de Santa Maria, CHLN , Lisbon , Portugal
| | - Isabel Pavão Martins
- a Language Research Laboratory, Faculty of Medicine , University of Lisbon , Lisbon , Portugal.,b Department of Neurosciences, Neurology , Hospital de Santa Maria, CHLN , Lisbon , Portugal
| | - Isabel Conceição
- b Department of Neurosciences, Neurology , Hospital de Santa Maria, CHLN , Lisbon , Portugal
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Dyck PJ, Kincaid JC, Dyck PJB, Chaudhry V, Goyal NA, Alves C, Salhi H, Wiesman JF, Labeyrie C, Robinson-Papp J, Cardoso M, Laura M, Ruzhansky K, Cortese A, Brannagan TH, Khoury J, Khella S, Waddington-Cruz M, Ferreira J, Wang AK, Pinto MV, Ayache SS, Benson MD, Berk JL, Coelho T, Polydefkis M, Gorevic P, Adams DH, Plante-Bordeneuve V, Whelan C, Merlini G, Heitner S, Drachman BM, Conceição I, Klein CJ, Gertz MA, Ackermann EJ, Hughes SG, Mauermann ML, Bergemann R, Lodermeier KA, Davies JL, Carter RE, Litchy WJ. Assessing mNIS+7 Ionis and international neurologists' proficiency in a familial amyloidotic polyneuropathy trial. Muscle Nerve 2017; 56:901-911. [PMID: 28063170 DOI: 10.1002/mus.25563] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Polyneuropathy signs (Neuropathy Impairment Score, NIS), neurophysiologic tests (m+7Ionis ), disability, and health scores were assessed in baseline evaluations of 100 patients entered into an oligonucleotide familial amyloidotic polyneuropathy (FAP) trial. METHODS We assessed: (1) Proficiency of grading neurologic signs and correlation with neurophysiologic tests, and (2) clinometric performance of modified NIS+7 neurophysiologic tests (mNIS+7Ionis ) and its subscores and correlation with disability and health scores. RESULTS The mNIS+7Ionis sensitively detected, characterized, and broadly scaled diverse polyneuropathy impairments. Polyneuropathy signs (NIS and subscores) correlated with neurophysiology tests, disability, and health scores. Smart Somatotopic Quantitative Sensation Testing of heat as pain 5 provided a needed measure of small fiber involvement not adequately assessed by other tests. CONCLUSIONS Specially trained neurologists accurately assessed neuropathy signs as compared to referenced neurophysiologic tests. The score, mNIS+7Ionis , broadly detected, characterized, and scaled polyneuropathy abnormality in FAP, which correlated with disability and health scores. Muscle Nerve 56: 901-911, 2017.
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Affiliation(s)
- Peter J Dyck
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - John C Kincaid
- Indiana University, IU Health, Indianapolis, Indiana, USA
| | - P James B Dyck
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - Vinay Chaudhry
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Namita A Goyal
- University of California Irvine, Irvine, California, USA
| | - Christina Alves
- Hospital Santo António, Centro Hospitalar Porto, Porto, Portugal
| | - Hayet Salhi
- Hôpitaux Universitaires Henri Mondor, Créteil, France
| | | | - Celine Labeyrie
- CHU Bicêtre, French Reference Center for FAP (NNERF), Le Kremlin Bicêtre, France
| | | | - Márcio Cardoso
- Hospital Santo António, Centro Hospitalar Porto, Porto, Portugal
| | - Matilde Laura
- National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | | | - Andrea Cortese
- C. Mondino National Neurological Institute, Pavia, Italy
| | | | - Julie Khoury
- Oregon Health & Science University, Portland, Oregon, USA
| | - Sami Khella
- Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, USA
| | - Márcia Waddington-Cruz
- Clementino Fraga Filho University Hospital, Federal University of Rio de Janerio, Rio de Janerio, Brazil
| | | | - Annabel K Wang
- University of California-Irvine, Orange, California, USA
| | - Marcus V Pinto
- Clementino Fraga Filho University Hospital, Federal University of Rio de Janerio, Rio de Janerio, Brazil
| | | | - Merrill D Benson
- Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - John L Berk
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - Teresa Coelho
- Hospital Santo António, Centro Hospitalar Porto, Porto, Portugal
| | | | - Peter Gorevic
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - David H Adams
- CHU Bicêtre, French Reference Center for FAP (NNERF), Le Kremlin Bicêtre, France
| | | | - Carol Whelan
- National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | | | | | - Brian M Drachman
- Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, USA
| | | | - Christopher J Klein
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - Morie A Gertz
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | | | | | - Michelle L Mauermann
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | | | - Karen A Lodermeier
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - Jenny L Davies
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - Rickey E Carter
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
| | - William J Litchy
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA
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Suhr OB, Lundgren E, Westermark P. One mutation, two distinct disease variants: unravelling the impact of transthyretin amyloid fibril composition. J Intern Med 2017; 281:337-347. [PMID: 28093848 DOI: 10.1111/joim.12585] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Although hereditary transthyretin (h-ATTR) amyloidosis is a monogenetic disease, a large variation in its phenotype has been observed. The common hypothesis of amyloid fibril formation involves dissociation of the transthyretin (TTR) tetramer into monomers that after misfolding reassemble into amyloid fibrils. This notion is partly challenged by the finding of two distinct types of amyloid fibrils. One of these, type A, consists of C-terminal ATTR fragments and full-length TTR, whereas the other, type B, consists only of full-length TTR. All organs of an individual patient contain ATTR deposits of either type A or type B fibrils, and the composition in each individual remains unchanged over time. The finding of two distinct types of ATTR fibrils suggests that there are at least two different pathways in operation for ATTR fibril formation. For the most common European mutation, TTR Val30Met, ATTR fibril composition is related to the outcome of liver transplantation, which is the first successful treatment for the disease, and the penetrance of the trait. In addition, the presence of C-terminal ATTR fragments has an impact on the affinity for various tracers used for noninvasive imaging of amyloid depositions such as 99 m-technetium-diphosphono-propanodicarboxylic acid scintigraphy and positron emission tomography utilizing Pittsburgh component B, and even for the gold standard diagnostic procedure, tissue biopsy stained by Congo red and examined under polarized light. The importance of amyloid fibril composition needs to be taken into consideration when designing clinical trials of treatment modalities, and also in the evaluation of diagnostic methods such as imaging techniques.
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Affiliation(s)
- O B Suhr
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - E Lundgren
- Department of Molecular Biology, Umeå University, Umeå, Sweden
| | - P Westermark
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
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Oda S, Utsunomiya D, Nakaura T, Yuki H, Kidoh M, Morita K, Takashio S, Yamamuro M, Izumiya Y, Hirakawa K, Ishida T, Tsujita K, Ueda M, Yamashita T, Ando Y, Hata H, Yamashita Y. Identification and Assessment of Cardiac Amyloidosis by Myocardial Strain Analysis of Cardiac Magnetic Resonance Imaging. Circ J 2017; 81:1014-1021. [PMID: 28367859 DOI: 10.1253/circj.cj-16-1259] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND We explored the usefulness of myocardial strain analysis on cardiac magnetic resonance imaging (CMR) scans for the identification of cardiac amyloidosis.Methods and Results:The 61 patients with systemic amyloidosis underwent 3.0-T CMR, including CMR tagging and late-gadolinium enhanced (LGE) imaging. The circumferential strain (CS) of LGE-positive and LGE-negative patients was measured on midventricular short-axis images and compared. Logistic regression modeling of CMR parameters was performed to detect patients with LGE-positive cardiac amyloidosis. Of the 61 patients with systemic amyloidosis 48 were LGE-positive and 13 were LGE-negative. The peak CS was significantly lower in the LGE-positive than in the LGE-negative patients (-9.5±2.3 vs. -13.3±1.4%, P<0.01). The variability in the peak CS time was significantly greater in the LGE-positive than in the LGE-negative patients (46.1±24.5 vs. 21.2±20.1 ms, P<0.01). The peak CS significantly correlated with clinical biomarkers. The sensitivity, specificity, and accuracy of the diagnostic model using CS parameters for the identification of LGE-positive amyloidosis were 93.8%, 76.9%, and 90.2%, respectively. CONCLUSIONS Myocardial strain analysis by CMR helped detect LGE-positive amyloidosis without the need for contrast medium. The peak CS and variability in the peak CS time may correlate with the severity of cardiac amyloid deposition and may be more sensitive than LGE imaging for the detection of early cardiac disease in patients with amyloidosis.
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Affiliation(s)
- Seitaro Oda
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
| | - Daisuke Utsunomiya
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
| | - Takeshi Nakaura
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
| | - Hideaki Yuki
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
| | - Masafumi Kidoh
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
| | - Kosuke Morita
- Department of Central Radiology, Kumamoto University Hospital
| | - Seiji Takashio
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Megumi Yamamuro
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Yasuhiro Izumiya
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Kyoko Hirakawa
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Toshifumi Ishida
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Kenichi Tsujita
- Department of Cardiology, Faculty of Life Sciences, Kumamoto University
| | - Mitsuharu Ueda
- Department of Neurology, Faculty of Life Sciences, Kumamoto University
| | - Taro Yamashita
- Department of Neurology, Faculty of Life Sciences, Kumamoto University
| | - Yukio Ando
- Department of Neurology, Faculty of Life Sciences, Kumamoto University
| | - Hiroyuki Hata
- Department of Informative Clinical Sciences, Faculty of Life Sciences, Kumamoto University
| | - Yasuyuki Yamashita
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University
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Lagarto F, Gomes B, Couto PS, Correia de Barros F, Moreira Z, Branco T, Fonseca L, Aguiar J, Aragão I, Miranda HP, Daniel J, Esteves S. Perioperative Predictors of Survival After Liver Transplantation for Familial Amyloid Polyneuropathy in a Portuguese Center. Transplant Proc 2017; 48:2098-101. [PMID: 27569952 DOI: 10.1016/j.transproceed.2016.04.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 04/05/2016] [Accepted: 04/27/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND Liver transplantation (LT) has been the treatment of choice to halt the progression of familial amyloid polyneuropathy (FAP). Few studies have identified prognostic factors for post-LT survival in FAP. Our aim was to assess survival rate and to identify independent factors for survival after LT. METHODS This retrospective cohort study of FAP patients transplanted for the first time analyzed 116 transplantations from 2006 to 2014. The median follow-up period was 45.5 months. RESULTS The overall survival rates at 1 month, 1 year, and 5 years were 89%, 82% and 79%, respectively. On multivariate analysis, only number of red blood cell (RBC) units transfused during surgery, operation time, and body mass index were independent prognostic factors for patient survival. Only 30% of patients were transfused during surgery, and, in these, each RBC unit transfused increased mortality by 53%. The operation time increased mortality by 20% for every 15 minutes of surgery. CONCLUSIONS This study suggests that operation time and RBC transfused are predominant factors affecting post-LT survival in our FAP patients.
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Affiliation(s)
- F Lagarto
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal.
| | - B Gomes
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - P Sá Couto
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - F Correia de Barros
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - Z Moreira
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - T Branco
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - L Fonseca
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - J Aguiar
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - I Aragão
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal
| | - H P Miranda
- Department of Liver Transplantation, Centro Hospitalar do Porto, Porto, Portugal
| | - J Daniel
- Department of Liver Transplantation, Centro Hospitalar do Porto, Porto, Portugal
| | - S Esteves
- Department of Anesthesiology, Intensive Care, and Emergency, Centro Hospitalar do Porto, Porto, Portugal; Department of Liver Transplantation, Centro Hospitalar do Porto, Porto, Portugal
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Kerschen P, Planté-Bordeneuve V. Current and Future Treatment Approaches in Transthyretin Familial Amyloid Polyneuropathy. Curr Treat Options Neurol 2016; 18:53. [PMID: 27873215 DOI: 10.1007/s11940-016-0436-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OPINION STATEMENT Treatment of transthyretin familial amyloid polyneuropathy (TTR FAP) must be tailored to disease stage. Patients with early stage disease (i.e., without major impairment in walking ability), especially younger patients, should be referred as soon as possible for liver transplantation (LT) in the absence of major comorbid conditions. LT remains the most effective treatment option to date and should be offered to these patients as early as possible. Bridging therapy with an oral TTR stabilizer (tafamidis or diflunisal, according to local access to these treatments) should be started as soon as the diagnosis of TTR FAP is established. Early stage patients who do not wish to or have contraindications to LT should be treated with an oral TTR stabilizer or get access to the newly developed therapeutic options (IONIS TTR-Rx, patisiran, doxycycline/TUDCA). Late stage patients (presenting with significant walking impairment) are usually older and notoriously difficult to treat. They should be offered an oral TTR stabilizer but are not candidates for LT due to a significant rate of perioperative complications and increased risk of progressive neurological and especially cardiac disease despite LT. Access to the different therapies in development should also be considered depending on respective inclusion and exclusion criteria. The abovementioned treatment options were mostly validated in Val30Met mutation patients, but should also be offered to non-Val30Met patients, although mortality rates after LT are higher in these patients. Treatment decisions should be made on an individual basis. Screening for heart, eye, and renal involvement is mandatory for every patient at disease diagnosis and regularly thereafter, even in transplanted patients. Symptomatic treatment should be offered as needed, as well as genetic counseling to at-risk family members. Asymptomatic mutation carriers should benefit from regular screening for early symptoms of disease. Current therapeutic management of TTR FAP will hopefully be changed in the near future with data from the ongoing phase 2/3 studies testing the TTR gene silencing agents. In the longer term, it is likely that combined therapeutic approaches will be necessary to reverse the disease process.
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Affiliation(s)
- Philippe Kerschen
- Service de Neurologie, Centre Hospitalier de Luxembourg, 4 rue Barblé, L-1210, Luxembourg, Luxembourg
| | - Violaine Planté-Bordeneuve
- Service de Neurologie, CHU Henri Mondor, 51 avenue de Lattre de Tassigny, 94000, Créteil, France. .,Groupe de Recherche Clinique Amylose, Université Paris-Est-Créteil, 94000, Créteil, France.
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First European consensus for diagnosis, management, and treatment of transthyretin familial amyloid polyneuropathy. Curr Opin Neurol 2016; 29 Suppl 1:S14-26. [PMID: 26734952 PMCID: PMC4739312 DOI: 10.1097/wco.0000000000000289] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Purpose of review Early and accurate diagnosis of transthyretin familial amyloid polyneuropathy (TTR-FAP) represents one of the major challenges faced by physicians when caring for patients with idiopathic progressive neuropathy. There is little consensus in diagnostic and management approaches across Europe. Recent findings The low prevalence of TTR-FAP across Europe and the high variation in both genotype and phenotypic expression of the disease means that recognizing symptoms can be difficult outside of a specialized diagnostic environment. The resulting delay in diagnosis and the possibility of misdiagnosis can misguide clinical decision-making and negatively impact subsequent treatment approaches and outcomes. Summary This review summarizes the findings from two meetings of the European Network for TTR-FAP (ATTReuNET). This is an emerging group comprising representatives from 10 European countries with expertise in the diagnosis and management of TTR-FAP, including nine National Reference Centres. The current review presents management strategies and a consensus on the gold standard for diagnosis of TTR-FAP as well as a structured approach to ongoing multidisciplinary care for the patient. Greater communication, not just between members of an individual patient's treatment team, but also between regional and national centres of expertise, is the key to the effective management of TTR-FAP.
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Evaluation of Therapeutic Oligonucleotides for Familial Amyloid Polyneuropathy in Patient-Derived Hepatocyte-Like Cells. PLoS One 2016; 11:e0161455. [PMID: 27584576 PMCID: PMC5008816 DOI: 10.1371/journal.pone.0161455] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/05/2016] [Indexed: 01/06/2023] Open
Abstract
Familial amyloid polyneuropathy (FAP) is caused by mutations of the transthyretin (TTR) gene, predominantly expressed in the liver. Two compounds that knockdown TTR, comprising a small interfering RNA (siRNA; ALN-TTR-02) and an antisense oligonucleotide (ASO; IONIS-TTRRx), are currently being evaluated in clinical trials. Since primary hepatocytes from FAP patients are rarely available for molecular analysis and commercial tissue culture cells or animal models lack the patient-specific genetic background, this study uses primary cells derived from urine of FAP patients. Urine-derived cells were reprogrammed to induced pluripotent stem cells (iPSCs) with high efficiency. Hepatocyte-like cells (HLCs) showing typical hepatic marker expression were obtained from iPSCs of the FAP patients. TTR mRNA expression of FAP HLCs almost reached levels measured in human hepatocytes. To assess TTR knockdown, siTTR1 and TTR-ASO were introduced to HLCs. A significant downregulation (>80%) of TTR mRNA was induced in the HLCs by both oligonucleotides. TTR protein present in the cell culture supernatant of HLCs was similarly downregulated. Gene expression of other hepatic markers was not affected by the therapeutic oligonucleotides. Our data indicate that urine cells (UCs) after reprogramming and hepatic differentiation represent excellent primary human target cells to assess the efficacy and specificity of novel compounds.
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Sekijima Y, Yazaki M, Oguchi K, Ezawa N, Yoshinaga T, Yamada M, Yahikozawa H, Watanabe M, Kametani F, Ikeda SI. Cerebral amyloid angiopathy in posttransplant patients with hereditary ATTR amyloidosis. Neurology 2016; 87:773-81. [PMID: 27466465 DOI: 10.1212/wnl.0000000000003001] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 04/01/2016] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the prevalence and clinical features of posttransplant CNS symptoms in patients with hereditary ATTR amyloidosis and their Pittsburgh compound B (PiB)-PET imaging correlates. METHODS We monitored prevalence and type of CNS symptoms in 53 consecutive posttransplant patients with hereditary ATTR amyloidosis. (11)C-PiB-PET was performed in 15 patients with various disease durations. We also analyzed pathologic and biochemical characteristics of ATTR amyloid deposition in the brain of a posttransplant patient. RESULTS Transient focal neurologic episodes (TFNEs) attributed to ATTR-type cerebral amyloid angiopathy (CAA) were found in 11.3% of posttransplant hereditary ATTR amyloidosis patients. TFNE occurred on average 16.8 years after onset of the disease. Patients with longer duration of illness (≥10 years) showed increased (11)C-PiB retention in the brain. The (11)C-PiB accumulation pattern in hereditary ATTR amyloidosis was unique and different from those in Alzheimer disease or Aβ-type CAA. In the autopsy case, ATTR amyloid deposition was mainly localized to leptomeningeal vessels and leptomeninges of the brain. Amyloid fibrils in the brain were almost completely composed of variant transthyretin (TTR). CONCLUSIONS TFNE due to ATTR-type CAA occurred frequently in posttransplant patients with long disease durations. (11)C-PiB-PET is a useful diagnostic tool for ATTR-type CAA. ATTR amyloid deposition in the CNS, as measured by PiB-PET, was detected approximately 10 years before onset of TFNE.
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Affiliation(s)
- Yoshiki Sekijima
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan.
| | - Masahide Yazaki
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Kazuhiro Oguchi
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Naoki Ezawa
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Tsuneaki Yoshinaga
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Mitsunori Yamada
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Hiroyuki Yahikozawa
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Masahide Watanabe
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Fuyuki Kametani
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
| | - Shu-Ichi Ikeda
- From the Departments of Medicine (Neurology and Rheumatology) (Y.S., M.Y., N.E., T.Y., S.-i.I.) and Brain Disease Research (M.Y.), Shinshu University School of Medicine; Institute for Biomedical Sciences (Y.S., M.Y., S.-i.I.), Shinshu University; Jisenkai Brain Imaging Research Center (Y.S., K.O.); Departments of Neurology (H.Y.) and Pathology (M.W.), Nagano Red Cross Hospital; and Department of Dementia and Higher Brain Function (F.K.), Tokyo Metropolitan Institute of Medical Science, Japan
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Survival After Transplantation in Patients With Mutations Other Than Val30Met: Extracts From the FAP World Transplant Registry. Transplantation 2016; 100:373-81. [PMID: 26656838 PMCID: PMC4732012 DOI: 10.1097/tp.0000000000001021] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background Liver transplantation (LTx) has been performed for hereditary transthyretin amyloidosis (ATTR) since 1990. Outcomes for a relatively large series of LTx ATTR patients with the Val30Met (mutation are available, but for non-Val30Met patients, only a few reports with a small number of patients exist. Here, we present outcomes for non-Val30Met ATTR patients after LTx, as reported to the Familial Amyloid Polyneuropathy World Transplant Registry (FAPWTR). Methods Data regarding outcome were extracted for all non-Val30Met patients reported to the registry. Survival rates were analyzed by the Kaplan-Meier method and log-rank test. Results The total number of patients with a non-Val30Met mutation in the registry was 264 (174 men and 90 women), representing 57 mutations. The 10-year survival varied markedly for the 9 most common mutations, ranging from 21% for Ser50Arg to 85% for Val71Ala. Poor survival was noted for all mutations with leptomeningeal complications except for those with the Tyr114Cys mutation. Conclusions Large differences in survival were observed relative to different mutations and between mutations with similar phenotypes. Excellent survival was noted for mutations, such as Leu111Met, Val71Ala, and Leu58His. Patients with mutations other than Val30Met are not a homogeneous group, and the term non-Val30Met should be used with caution or avoided. Moreover, for several mutations, data are too limited to allow evaluation of the efficacy of LTx, and continuous international collaboration is important for obtaining treatment guidance.
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Monitoring effectiveness and safety of Tafamidis in transthyretin amyloidosis in Italy: a longitudinal multicenter study in a non-endemic area. J Neurol 2016; 263:916-924. [DOI: 10.1007/s00415-016-8064-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/08/2016] [Accepted: 02/09/2016] [Indexed: 10/22/2022]
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Okumura K, Yamashita T, Masuda T, Misumi Y, Ueda A, Ueda M, Obayashi K, Jono H, Yamashita S, Inomata Y, Ando Y. Long-term outcome of patients with hereditary transthyretin V30M amyloidosis with polyneuropathy after liver transplantation. Amyloid 2016; 23:39-45. [PMID: 26763274 DOI: 10.3109/13506129.2015.1123149] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Liver transplantation halts production of mutated transthyretin (TTR), and thus it is an accepted treatment, with improved survival, in patients with hereditary (familial) amyloidosis with polyneuropathy (FAP). However, the effects of transplantation on the clinical manifestations of FAP have not yet been adequately clarified. This study aimed to investigate whether liver transplantation would improve the long-term clinical manifestations in FAP patients who had undergone transplantations. PATIENTS AND METHODS We assessed 29 non-transplant and 36 transplant FAP V30M patients using an FAP clinical scoring system. RESULTS The total clinical score of the non-transplant group increased and was significantly correlated with FAP duration; that of the transplant group increased slowly after transplantation. In patients 5 years or more after FAP onset, the total clinical scores of the transplant group were significantly lower than those of the non-transplant group. In the same patients, scores for sensory, motor, autonomic and organ impairments of the transplant group were significantly lower than those of the non-transplant group. CONCLUSIONS Liver transplantation had beneficial effects on FAP clinical manifestations in patients with FAP TTR V30M. Liver transplantation should therefore be considered as an effective treatment in the clinical management of patients with FAP TTR V30M.
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Affiliation(s)
| | - Taro Yamashita
- a Department of Neurology .,b Amyloidosis Diagnostic Unit
| | | | | | | | | | - Konen Obayashi
- c Department of Morphological and Physiological Sciences
| | - Hirofumi Jono
- d Department of Clinical Pharmaceutical Sciences , and
| | | | - Yukihiro Inomata
- e Department of Pediatric Surgery and Transplantation , Graduate School of Medical Sciences, Kumamoto University , Kumamoto , Japan
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Waddington Cruz M, Benson MD. A Review of Tafamidis for the Treatment of Transthyretin-Related Amyloidosis. Neurol Ther 2015; 4:61-79. [PMID: 26662359 PMCID: PMC4685869 DOI: 10.1007/s40120-015-0031-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Indexed: 12/24/2022] Open
Abstract
Transthyretin (TTR)-related amyloidosis (ATTR) is a devastating disease which affects a combination of organs including the heart and the peripheral nerves, and which has a fatal outcome if not treated within a average of 10 years. Tafamidis, or 2-(3,5-dichloro-phenyl)-benzoxazole-6-carboxylic acid, selectively binds to TTR with negative cooperativity and kinetically stabilizes wild-type native TTR and mutant TTR; tafamidis therefore has the potential to halt the amyloidogenic cascade initiated by TTR tetramer dissociation, monomer misfolding, and aggregation. The first tafamidis trial, Fx-005, evaluated the effect of 18 months of tafamidis treatment (20 mg once daily) on disease progression, as well as assessing its safety in TTR-FAP Val30Met patients. The secondary objective of this trial was to study the pharmacodynamic stabilization of mutated TTR. Tafamidis proved effective in reducing the progress of neuropathy, and in maintaining the nutritional status and quality of life of stage 1 (able to walk without support) Val3OMet TTR-FAP patients. Furthermore, TTR stabilization was achieved in more than 90% of patients. An extension study, Fx-006, was conducted to determine the long-term safety and tolerability of tafamidis and to assess the efficacy of the drug on slowing disease progression. No significant safety or tolerability issues were noticed. Taken together, the results from both trials indicated that the beneficial effects of tafamidis were sustained over a 30-month period and that starting treatment early is desirable. Results are expected from an extended open-label study but data that have already been presented show that long-term use of tafamidis in Val30Met patients is associated with reduced progression in polyneuropathy. Tafamidis was initially approved for commercial use in Europe in 2011 and has since been approved for use in Japan, Mexico, and Argentina where it is used as a first-line treatment option for patients with early-stage TTR-FAP. Patients should be carefully followed at referral centers to ascertain the individual response to treatment. In cases of discontinuation, liver transplantation and enrollment in clinical trials of novel drugs aimed mostly toward suppression of TTR production are options.
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Affiliation(s)
- Márcia Waddington Cruz
- Amyloidosis Research and Treatment Center (CEPARM), University Hospital (HUCFF), Federal University of Rio de Janeiro, Rio De Janeiro, Brazil.
| | - Merril D Benson
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
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Arvidsson S, Pilebro B, Westermark P, Lindqvist P, Suhr OB. Amyloid Cardiomyopathy in Hereditary Transthyretin V30M Amyloidosis - Impact of Sex and Amyloid Fibril Composition. PLoS One 2015; 10:e0143456. [PMID: 26600306 PMCID: PMC4658178 DOI: 10.1371/journal.pone.0143456] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/04/2015] [Indexed: 01/11/2023] Open
Abstract
Purpose Transthyretin V30M (ATTR V30M) amyloidosis is a phenotypically diverse disease with symptoms ranging from predominant neuropathy to exclusive cardiac manifestations. The aims of this study were to determine the dispersion of the two types of fibrils found in Swedish ATTR V30M patients -Type A consisting of a mixture of truncated and full length ATTR fibrils and type B fibrils consisting of full length fibrils, and to estimate the severity of cardiac dysfunction in relation to fibril composition and sex. Material and Methods Echocardiographic data were analysed in 107 Swedish ATTR V30M patients with their fibril composition determined as either type A or type B. Measurements of left ventricular (LV) dimensions and evaluation of systolic and diastolic function including speckle tracking derived strain were performed. Patients were grouped according to fibril type and sex. Multivariate linear regression was utilised to determine factors of significant impact on LV thickness. Results There was no significant difference in proportions of the two types of fibrils between men and women. In patients with type A fibrils, women had significantly lower median septal (p = 0.007) and posterior wall thicknesses (p = 0.010), lower median LV mass indexed to height (p = 0.008), and higher septal strain (p = 0.037), as compared to males. These differences were not apparent in patients with type B fibrils. Multiple linear regression analysis revealed that fibril type, sex and age all had significant impact on LV septal thickness. Conclusion This study demonstrates a clear difference between sexes in the severity of amyloid heart disease in ATTR V30M amyloidosis patients. Even though type A fibrils were associated with more advanced amyloid heart disease compared to type B, women with type A fibrils generally developed less cardiac infiltration than men. The differences may explain the better outcome for liver transplanted late-onset female patients compared to males.
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Affiliation(s)
- Sandra Arvidsson
- Department of Clinical Physiology, Heart Centre, Umeå University, Umeå, Sweden
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
- * E-mail:
| | - Björn Pilebro
- Department of Cardiology, Heart Centre, Umeå University, Umeå, Sweden
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Per Westermark
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Per Lindqvist
- Department of Clinical Physiology, Heart Centre, Umeå University, Umeå, Sweden
- Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
| | - Ole B. Suhr
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
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Liver Transplantation for Hereditary Transthyretin Amyloidosis: After 20 Years Still the Best Therapeutic Alternative? Transplantation 2015; 99:1847-54. [PMID: 26308415 DOI: 10.1097/tp.0000000000000574] [Citation(s) in RCA: 233] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Until recently, liver transplantation (Ltx) was the only available treatment for hereditary transthyretin (TTR) amyloidosis; today, however, several pharmacotherapies are tested. Herein, we present survival data from the largest available database on transplanted hereditary TTR patients to serve as a base for comparison. METHODS Liver transplantation was evaluated in a 20-year retrospective analysis of the Familial Amyloidosis Polyneuropathy World Transplant Registry. RESULTS From April 1990 until December 2010, data were accumulated from 77 liver transplant centers. The Registry contains 1940 patients, and 1379 are alive. Eighty-eight Ltx were performed in combination with a heart and/or kidney transplantation. Overall, 20-year survival after Ltx was 55.3%. Multivariate analysis revealed modified body mass index, early onset of disease (<50 years of age), disease duration before Ltx, and TTR Val30Met versus non-TTR Val30Met mutations as independent significant survival factors. Early-onset patients had an expected mortality rate of 38% that of the late-onset group (P < 0.001). Furthermore, Val30Met patients had an expected mortality rate of 61% that of non-TTR Val30Met patients (P < 0.001). With each year of duration of disease before Ltx, expected mortality increased by 11% (P < 0.001). With each 100-unit increase in modified body mass index at Ltx, the expected mortality decreased to 89% of the expected mortality (P < 0.001). Cardiovascular death was markedly more common than that observed in patients undergoing Ltx for end-stage liver disease. CONCLUSIONS Long-term survival after Ltx, especially for early-onset TTR Val30Met patients, is excellent. The risk of delaying Ltx by testing alternative treatments, especially in early-onset TTR Val30Met patients, requires consideration.
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Characterisation of serum transthyretin by electrospray ionisation-ion mobility mass spectrometry: Application to familial amyloidotic polyneuropathy type I (FAP-I). Talanta 2015; 144:1216-24. [DOI: 10.1016/j.talanta.2015.07.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 07/20/2015] [Accepted: 07/28/2015] [Indexed: 11/19/2022]
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