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Chompoopong P, Mauermann ML, Siddiqi H, Peltier A. Amyloid Neuropathy: From Pathophysiology to Treatment in Light-Chain Amyloidosis and Hereditary Transthyretin Amyloidosis. Ann Neurol 2024; 96:423-440. [PMID: 38923548 DOI: 10.1002/ana.26965] [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: 02/03/2024] [Revised: 03/20/2024] [Accepted: 05/02/2024] [Indexed: 06/28/2024]
Abstract
Amyloid neuropathy is caused by deposition of insoluble β-pleated amyloid sheets in the peripheral nervous system. It is most common in: (1) light-chain amyloidosis, a clonal non-proliferative plasma cell disorder in which fragments of immunoglobulin, light or heavy chain, deposit in tissues, and (2) hereditary transthyretin (ATTRv) amyloidosis, a disorder caused by autosomal dominant mutations in the TTR gene resulting in mutated protein that has a higher tendency to misfold. Amyloid fibrils deposit in the endoneurium of peripheral nerves, often extensive in the dorsal root ganglia and sympathetic ganglia, leading to atrophy of Schwann cells in proximity to amyloid fibrils and blood-nerve barrier disruption. Clinically, amyloid neuropathy is manifested as a length-dependent sensory predominant neuropathy associated with generalized autonomic failure. Small unmyelinated nerves are involved early and prominently in early-onset Val30Met ATTRv, whereas other ATTRv and light-chain amyloidosis often present with large- and small-fiber involvement. Nerve conduction studies, quantitative sudomotor axon testing, and intraepidermal nerve fiber density are useful tools to evaluate denervation. Amyloid deposition can be demonstrated by tissue biopsy of the affected organ or surrogate site, as well as bone-avid radiotracer cardiac imaging. Treatment of light-chain amyloidosis has been revolutionized by monoclonal antibodies and stem cell transplantation with improved 5-year survival up to 77%. Novel gene therapy and transthyretin stabilizers have revolutionized treatment of ATTRv, improving the course of neuropathy (less change in the modified Neuropathy Impairment Score + 7 from baseline) and quality of life. With great progress in amyloidosis therapies, early diagnosis and presymptomatic testing for ATTRv family members has become paramount. ANN NEUROL 2024;96:423-440.
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Affiliation(s)
| | | | - Hasan Siddiqi
- Department of Medicine, Division of Cardiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Amanda Peltier
- Department of Medicine, Division of Cardiology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
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2
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Nativi-Nicolau J, Yilmaz A, Dasgupta N, Macey R, Cochrane J, Peatman J, Summers C, Luth J, Zolty R. Six-minute walk test as clinical end point in cardiomyopathy clinical trials, including ATTR-CM: a systematic literature review. J Comp Eff Res 2024; 13:e230158. [PMID: 38869839 PMCID: PMC11234454 DOI: 10.57264/cer-2023-0158] [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] [Indexed: 06/14/2024] Open
Abstract
Aim: The six-minute walk test (6MWT) is a common measure of functional capacity in patients with heart failure (HF). Primary clinical study end points in cardiomyopathy (CM) trials, including transthyretin-mediated amyloidosis with CM (ATTR-CM), are often limited to hospitalization and mortality. Objective: To investigate the relationship between the 6MWT and hospitalization or mortality in CM, including ATTR-CM. Method: A PRISMA-guided systematic literature review was conducted using search terms for CM, 6MWT, hospitalization and mortality. Results: Forty-one studies were identified that reported 6MWT data and hospitalization or mortality data for patients with CM. The data suggest that a greater 6MWT distance is associated with a reduced risk of hospitalization or mortality in CM. Conclusion: The 6MWT is an accepted alternative end point in CM trials, including ATTR-CM.
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Affiliation(s)
| | - Ali Yilmaz
- Division of Cardiovascular Imaging, University Hospital Münster, 48149, Münster, Germany
| | - Noel Dasgupta
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Richard Macey
- Adelphi Values PROVETM, Bollington, Cheshire, UK, SK10 5JB
| | - James Cochrane
- Adelphi Values PROVETM, Bollington, Cheshire, UK, SK10 5JB
| | - Judith Peatman
- Adelphi Values PROVETM, Bollington, Cheshire, UK, SK10 5JB
| | - Catherine Summers
- Medical Affairs Department, Alnylam Pharmaceuticals, Cambridge, MA 02142, USA
| | - Jennifer Luth
- Medical Affairs Department, Alnylam Pharmaceuticals, Cambridge, MA 02142, USA
| | - Ronald Zolty
- Division of Cardiovascular Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE 68198 USA
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3
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Petros FE, Santos AM, Adeniyi A, Teruya S, De Los Santos J, Maurer MS, Agrawal SK. Gait abnormalities in older adults with transthyretin cardiac amyloidosis. Amyloid 2024; 31:116-123. [PMID: 38433466 PMCID: PMC11116048 DOI: 10.1080/13506129.2024.2319133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 02/10/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Transthyretin cardiac amyloidosis (ATTR cardiac amyloidosis) is caused by variant (ATTRv) or wild type (ATTRwt) transthyretin. While gait abnormalities have been studied in younger patients with ATTRv amyloidosis, research on gait in older adults with ATTR cardiac amyloidosis is lacking. Given ATTR cardiac amyloidosis' association with neuropathy and orthopedic manifestations, we explore the gait in this population. METHODS Twenty-eight older male ATTR cardiac amyloidosis patients and 11 healthy older male controls walked overground with and without a dual cognitive task. Gait parameters: stride width, length, velocity and stance time percentage were measured using an instrumented mat. ATTR amyloidosis patients were further categorized based on clinical and functional assessments. RESULTS We found significant gait differences between ATTR cardiac amyloidosis patients and healthy controls; patients had more variable, slower, narrower and shorter strides, with their feet spending more time in contact with the ground as opposed to in swing. However, the observed gait differences did not correlate with clinical and functional measures of ATTR cardiac amyloidosis severity. CONCLUSIONS Our results suggest that gait analysis could be a complementary tool for characterizing ATTR cardiac amyloidosis patients and may inform clinical care as it relates to falls, management of anticoagulation, and functional independence.
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Affiliation(s)
- Fitsum E Petros
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | | | - Adedeji Adeniyi
- Vagelos College of Physicians & Surgeons, Irvine Medical Center, Columbia University, New York, NY, USA
| | - Sergio Teruya
- Department of Medicine, Division of Cardiology, Columbia University, New York, NY, USA
| | - Jeffeny De Los Santos
- Department of Medicine, Division of Cardiology, Columbia University, New York, NY, USA
| | - Mathew S Maurer
- Department of Medicine, Division of Cardiology, Columbia University, New York, NY, USA
| | - Sunil K Agrawal
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
- Rehabilitation and Regenerative Medicine, Columbia University, New York, NY, USA
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4
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Pernice HF, Knorz AL, Wetzel PJ, Herrmann C, Muratovic H, Rieber F, Asaad E, Fiß G, Barzen G, Blüthner E, Knebel F, Spethmann S, Messroghli D, Heidecker B, Brand A, Wetz C, Tschöpe C, Hahn K. Neurological affection and serum neurofilament light chain in wild type transthyretin amyloidosis. Sci Rep 2024; 14:10111. [PMID: 38698025 PMCID: PMC11066119 DOI: 10.1038/s41598-024-60025-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/17/2024] [Indexed: 05/05/2024] Open
Abstract
In contrast to inherited transthyretin amyloidosis (A-ATTRv), neuropathy is not a classic leading symptom of wild type transthyretin amyloidosis (A-ATTRwt). However, neurological symptoms are increasingly relevant in A-ATTRwt as well. To better understand the role of neurological symptoms in A-ATTRwt, A-ATTRwt patients were prospectively characterized at Amyloidosis Center Charité Berlin (ACCB) between 2018 and 2023 using detailed neurological examination, quality of life questionnaires, and analysis of age- and BMI-adapted serum neurofilament light chain (NFL) levels. 16 out of 73 (21.9%) patients presented with a severe neuropathy which we defined by a Neuropathy Impairment Score (NIS) of 20 or more. In this group, quality of life was reduced, peripheral neuropathy was more severe, and spinal stenosis and joint replacements were frequent. Age- and BMI matched serum NFL levels were markedly elevated in patients with a NIS ≥ 20. We therefore conclude that highly abnormal values in neuropathy scores such as the NIS occur in A-ATTRwt, and have an important impact on quality of life. Both peripheral neuropathy and spinal canal stenosis are likely contributors. Serum NFL may serve as a biomarker for neurological affection in patients with A-ATTRwt. It will be important to consider neurological aspects of A-ATTRwt for diagnosis, clinical follow-up, and future treatment development.
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Affiliation(s)
- Helena F Pernice
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Adrian L Knorz
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Paul J Wetzel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Carolin Herrmann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Biometry and Clinical Epidemiology, Charitéplatz 1, 10117, Berlin, Germany
| | - Harisa Muratovic
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Finn Rieber
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
| | - Eleonora Asaad
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Gunnar Fiß
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany
| | - Gina Barzen
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Elisabeth Blüthner
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medical Clinic m.S. Hepatology and Gastroenterology CCM/CVK, Berlin, Germany
| | - Fabian Knebel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- Klinik für Innere Medizin mit Schwerpunkt Kardiologie, Sana Klinikum Lichtenberg, Berlin, Germany
| | - Sebastian Spethmann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Daniel Messroghli
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Bettina Heidecker
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Anna Brand
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Christoph Wetz
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nuclear Medicine, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Carsten Tschöpe
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Deutsches Herzzentrum der Charité, Department of Cardiology, Angiology and Intensive Care Medicine, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Katrin Hahn
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Charitéplatz 1, 10117, Berlin, Germany.
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology and Experimental Neurology, Charitéplatz 1, 10117, Berlin, Germany.
- Berlin Institute of Health at Charité (BIH)-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
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González-Moreno J, Dispenzieri A, Grogan M, Coelho T, Tournev I, Waddington-Cruz M, Wixner J, Diemberger I, Garcia-Pavia P, Chapman D, Gupta P, Glass O, Amass L. Clinical and Genotype Characteristics and Symptom Migration in Patients With Mixed Phenotype Transthyretin Amyloidosis from the Transthyretin Amyloidosis Outcomes Survey. Cardiol Ther 2024; 13:117-135. [PMID: 38117424 PMCID: PMC10899146 DOI: 10.1007/s40119-023-00344-3] [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: 09/10/2023] [Accepted: 11/21/2023] [Indexed: 12/21/2023] Open
Abstract
INTRODUCTION Transthyretin amyloidosis (ATTR amyloidosis) is primarily associated with a cardiac or neurologic phenotype, but a mixed phenotype is increasingly described. METHODS This study describes the mixed phenotype cohort in the Transthyretin Amyloidosis Outcomes Survey (THAOS). THAOS is an ongoing, longitudinal, observational survey of patients with ATTR amyloidosis, including both hereditary (ATTRv) and wild-type disease, and asymptomatic carriers of pathogenic transthyretin variants. Baseline characteristics of patients with a mixed phenotype (at enrollment or reclassified during follow-up) are described (data cutoff: January 4, 2022). RESULTS Approximately one-third of symptomatic patients (n = 1185/3542; 33.5%) were classified at enrollment or follow-up as mixed phenotype (median age, 66.5 years). Of those, 344 (29.0%) were reclassified to mixed phenotype within a median 1-2 years of follow-up. Most patients with mixed phenotype had ATTRv amyloidosis (75.7%). The most frequent genotypes were V30M (38.9%) and wild type (24.3%). CONCLUSIONS These THAOS data represent the largest analysis of a real-world mixed phenotype ATTR amyloidosis population to date and suggest that a mixed phenotype may be more prevalent than previously thought. Patients may also migrate from a primarily neurologic or cardiologic presentation to a mixed phenotype over time. These data reinforce the need for multidisciplinary evaluation at initial assessment and follow-up of all patients with ATTR amyloidosis. TRIAL REGISTRATION ClinicalTrials.gov: NCT00628745.
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Affiliation(s)
- Juan González-Moreno
- Servicio de Medicina Interna, Hospital Universitario Son Llatzer, Instituto de Investigación Sanitaria Illes Balears, Palma, Spain.
| | | | - Martha Grogan
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Teresa Coelho
- Unidade Corino Andrade, Hospital Santo António, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Ivailo Tournev
- Department of Neurology, Clinic of Nervous Diseases, UMBAL Aleksandrovska, Medical University, Sofia, Bulgaria
- Department of Cognitive Science, New Bulgarian University, Sofia, Bulgaria
| | - Márcia Waddington-Cruz
- National Amyloidosis Referral Center, CEPARM, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jonas Wixner
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Igor Diemberger
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna, Bologna, Italy
- UOC di Cardiologia, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Dipartimento Cardiotoraco-vascolare, via Massarenti 9, 40138, Bologna, Italy
| | - Pablo Garcia-Pavia
- Hospital Universitario Puerta de Hierro Majadahonda, IDIPHISA, CIBERCV, Madrid, Spain
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | | | - Pritam Gupta
- Pfizer Healthcare India Pvt. Ltd, Chennai, India
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Živković SA, Lacomis D, Soman P. Neuromuscular manifestations of wild type transthyretin amyloidosis: a review and single center's experience. Front Cardiovasc Med 2024; 11:1345608. [PMID: 38410247 PMCID: PMC10894993 DOI: 10.3389/fcvm.2024.1345608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/02/2024] [Indexed: 02/28/2024] Open
Abstract
Transthyretin amyloidosis (ATTR) is a condition defined by accumulation of insoluble transthyretin amyloid deposits in multiple organs, especially in the peripheral nerve and heart muscle. ATTR may result from transthyretin mutations (variant ATTR or ATTRv) or may occur with normal transthyretin genotype (wild type ATTR or ATTRwt). ATTRwt was previously known as "senile amyloidosis" and causes cardiomyopathy which may lead to heart failure with a preserved ejection fraction, affecting predominantly elderly men. The exact prevalence of ATTRwt in the general population remains unclear, but its occurrence may be underestimated in women. It was observed that a proportion of ATTRwt cardiomyopathy patients may develop slowly progressing neuropathy that is milder and indolent in comparison with typical progressive neuropathy associated with ATTRv. Furthermore, the causality of neuropathy is often uncertain in patients with ATTRwt. Neuropathy symptoms, including distal sensory loss, unsteadiness and (neuropathic) pain are common in elderly patients with multiple potential causes, and as ATTRwt patients are typically older, relatively high prevalence of peripheral neuropathy is expected with frequent comorbidities. Relatively high prevalence of ATTRwt in elderly population contrasts few documented cases of neuropathy caused by ATTRwt, and there is uncertainty whether ATTRwt neuropathy is an infrequent occurrence or a significant manifestation of multisystemic ATTRwt. We review neurologic and musculoskeletal manifestations of ATTRwt and present clinical features of a single center cohort of ATTRwt patients with suspected peripheral neuropathy.
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Affiliation(s)
- Sasha A Živković
- Department of Neurology, Yale University, New Haven, CT, United States
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
- Cardiac Amyloidosis Center, UPMC Heart and Vascular Institute, Pittsburgh, PA, United States
| | - David Lacomis
- Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
- Department of Pathology (Neuropathology), University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Prem Soman
- Cardiac Amyloidosis Center, UPMC Heart and Vascular Institute, Pittsburgh, PA, United States
- Division of Cardiology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
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Pinton S, Vacchi E, Chiaro G, Raimondi A, Tzankov A, Gerber B, Gobbi C, Kaelin-Lang A, Melli G. Amyloid detection and typing yield of skin biopsy in systemic amyloidosis and polyneuropathy. Ann Clin Transl Neurol 2023; 10:2347-2359. [PMID: 37849451 PMCID: PMC10723241 DOI: 10.1002/acn3.51924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/19/2023] Open
Abstract
OBJECTIVE Disease-modifying therapies are available for amyloidosis but are ineffective if end-organ damage is severe. As small fiber neuropathy is an early and common feature of amyloidosis, we assessed detection and typing yield of skin biopsy for amyloid in patients with confirmed systemic amyloidosis and neuropathic symptoms. METHODS In this case-control study, patients with transthyretin and light chain amyloidosis (ATTRv, ATTRwt, and AL) were consecutively recruited. They were sex and age-matched to three control groups (1) non-neuropathic controls (NNC), (2) monoclonal gammopathy of undetermined significance (MGUS), and (3) other neuropathic disease controls (ONC). Patients underwent a double 3 mm skin biopsy in proximal and distal leg. Amyloid index and burden, protein typing by immuno-electron microscopy, intraepidermal nerve fiber density, electroneuromyography, and clinical characteristics were analyzed. RESULTS We studied 15 subjects with confirmed systemic amyloidosis, 20 NNC, 18 MGUS, and 20 ONC. Amyloid was detected in 100% of patients with amyloidosis (87% in ankle and 73% in thigh). It was not detected in any of the control groups. A small fiber neuropathy was encountered in 100% of amyloidosis patients, in 80% of MGUS, and in 78% of ONC. Amyloid burden was higher in ATTRv, followed by AL and ATTRwt. The ultrastructural examination allowed the identification of the precursor protein by immunotyping in most of the cases. INTERPRETATION Skin biopsy is a minimally invasive test with optimal sensitivity for amyloid. It allows amyloid typing by electron microscope to identify the precursor protein. The diagnostic work up of systemic amyloidosis should include a skin biopsy.
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Affiliation(s)
- Sandra Pinton
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Neurodegenerative disorders lab, Laboratories for Translational Research, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Elena Vacchi
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Neurodegenerative disorders lab, Laboratories for Translational Research, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Giacomo Chiaro
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Neurodegenerative disorders lab, Laboratories for Translational Research, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Andrea Raimondi
- Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
- Experimental Imaging Centre, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alexandar Tzankov
- Histopathology, Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Bernhard Gerber
- Clinic of Hematology, Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Claudio Gobbi
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Alain Kaelin-Lang
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Neurodegenerative disorders lab, Laboratories for Translational Research, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Giorgia Melli
- Neurology Department, Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Neurodegenerative disorders lab, Laboratories for Translational Research, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
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8
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Pernice HF, Hahn K. [Neurological manifestations of ATTR amyloidosis]. INNERE MEDIZIN (HEIDELBERG, GERMANY) 2023; 64:848-854. [PMID: 37555967 DOI: 10.1007/s00108-023-01570-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/17/2023] [Indexed: 08/10/2023]
Abstract
Transthyretin amyloidosis (ATTR) is a rare disease in which the protein transthyretin (TTR) is deposited in the form of amyloid fibrils in various tissues and organs and secondarily leads to functional impairment, especially in peripheral nerves and the heart. A differentiation is made between hereditary and sporadic forms. The hereditary variant is inherited in an autosomal dominant manner and usually occurs in the younger to middle-aged, while the sporadic form occurs in older age and has no known genetic cause. Typical signs of hereditary ATTR amyloidosis (ATTRv, v for variant) include a rapidly progressing sensorimotor and autonomic polyneuropathy (PNP), cardiac dysfunction as well as ocular and gastrointestinal symptoms. A carpal tunnel syndrome often precedes the manifestation. Various options (tafamidis, patisiran, inotersen or vutrisiran) are available for the treatment of patients with ATTRv with PNP in Germany, depending on the severity. In the sporadic variant of wild-type ATTR amyloidosis (ATTRwt), symptoms of progressive cardiomyopathy are usually prominent; however, neurological assessment of these patients often also reveals a concomitant sensory ataxic PNP. The tetramer stabilizer tafamidis can be used for treatment. Because of this complex presentation, the management of patients with ATTR amyloidosis should be performed in interdisciplinary centers specialized in amyloidosis.
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Affiliation(s)
- Helena F Pernice
- Amyloidosis Center Charité Berlin (ACCB), Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
- Klinik für Neurologie mit Experimenteller Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - Katrin Hahn
- Amyloidosis Center Charité Berlin (ACCB), Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland.
- Klinik für Neurologie mit Experimenteller Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland.
- Berlin Institute of Health at Charité (BIH), Universitätsmedizin Berlin, Berlin, Deutschland.
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9
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O’Connor M, Hsu K, Broderick L, McCausland KL, LaGasse K, Rebello S, Carty M, Lousada I. The Transthyretin Amyloidosis - Quality of Life (ATTR-QOL) Questionnaire: Development of a Conceptual Model and Disease-Specific Patient-Reported Outcome Measure. Patient Relat Outcome Meas 2023; 14:213-222. [PMID: 37441025 PMCID: PMC10335277 DOI: 10.2147/prom.s411721] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Purpose Patients with transthyretin amyloidosis (ATTR) experience a wide variety of symptoms and impacts on health-related quality of life (HRQoL). However, the lack of an ATTR-specific patient-reported outcome (PRO) measure has made consistent measurement of HRQoL in ATTR challenging. This paper describes the development of a conceptual model and subsequent content for the Transthyretin Amyloidosis - Quality of Life Questionnaire (ATTR-QOL), an ATTR-specific PRO measure. Methods This was a cross-sectional, non-interventional, US-based study. The study design included three stages: 1) a targeted literature review followed by qualitative data collection with patients and experts; 2) development of a conceptual model and PRO measure; and 3) review of the PRO measure using a modified Delphi method, translatability assessment, and interviews with patients and experts. Revisions were made to the measure after each round of review. Results Forty-four patients and 29 experts participated in this study. The conceptual model included two primary concepts of interest: symptoms (cardiac, neuropathic-peripheral, neuropathic-autonomic, and other) and impacts (eg, physical, role, and mental/emotional functioning). Seventy-two items were created (32 symptoms; 40 impacts) to align with the model. A recall period of one month was selected based on participant input. Conclusion The ATTR-QOL was created with significant patient involvement and guidance from a multidisciplinary group of experts. The mix of patient and clinical perspectives helped to ensure a balanced representation of all relevant disease experiences and clinical specialties. With further refinement from psychometric testing, the ATTR-QOL will provide a standard, comprehensive measure for all ATTR-specific research including both clinical trials and clinical practice.
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Affiliation(s)
| | - Kristen Hsu
- Amyloidosis Research Consortium, Newton, MA, USA
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10
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Kittleson MM, Ruberg FL, Ambardekar AV, Brannagan TH, Cheng RK, Clarke JO, Dember LM, Frantz JG, Hershberger RE, Maurer MS, Nativi-Nicolau J, Sanchorawala V, Sheikh FH. 2023 ACC Expert Consensus Decision Pathway on Comprehensive Multidisciplinary Care for the Patient With Cardiac Amyloidosis: A Report of the American College of Cardiology Solution Set Oversight Committee. J Am Coll Cardiol 2023; 81:1076-1126. [PMID: 36697326 DOI: 10.1016/j.jacc.2022.11.022] [Citation(s) in RCA: 107] [Impact Index Per Article: 107.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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11
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Peripheral nerve involvement in wild-type transthyretin amyloidosis. Neurol Sci 2023; 44:351-354. [PMID: 36260260 DOI: 10.1007/s10072-022-06459-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/14/2022] [Indexed: 01/07/2023]
Abstract
INTRODUCTION AND AIMRPOSE Neurological involvement other than carpal tunnel syndrome (CTS) has rarely been observed in wild-type transthyretin amyloidosis (ATTRwt). The aim of our study was to investigate peripheral nerve involvement in ATTRwt. METHODS Patients diagnosed with ATTRwt (negative molecular testing, confirmed cardiac uptake at bone scintigraphy, Perugini score 2 or 3) were considered. Sixteen men (mean age 75 ± 6.2, range 65-86 years) were enrolled. Neurological examination (Neuropathy Impairment Score, NIS), questionnaires on autonomic function and quality of life (QoL), electrodiagnostic studies (EDX), nerve ultrasound, and Sudoscan (electrochemical skin conductance, ESC) were performed. The presence of peripheral neuropathy was defined according to the detection of any abnormal finding at lower limbs other than CTS at EDX studies, regardless of NIS scores. RESULTS Ten (62.5%) ATTRwt had abnormal NIS scores. At EDX, CTS was observed in 13/16 (81.2%), with 3/16 (18.8%) presenting also axonal peripheral neuropathy. Extensive workup ruled out common causes of neuropathy. Eight (50%) ATTRwt patients had orthostatic hypotension (OH). Abnormal ESC was observed in 9/14 (64%) ATTRwt patients. DISCUSSION Despite being uncommon, we observed peripheral nervous system involvement in ATTRwt (large and small fiber dysfunction). Being elderly, ATTRwt patients may have age-related conditions acting as confounding factors for the diagnosis of neuropathy that however can be detected with a careful examination and use of specific tests, including those for autonomic dysfunction.
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12
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Oral Therapy for the Treatment of Transthyretin-Related Amyloid Cardiomyopathy. Int J Mol Sci 2022; 23:ijms232416145. [PMID: 36555787 PMCID: PMC9788438 DOI: 10.3390/ijms232416145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
The care of systemic amyloidosis has improved dramatically due to improved awareness, accurate diagnostic tools, the development of powerful prognostic and companion biomarkers, and a continuous flow of innovative drugs, which translated into the blooming of phase 2/3 interventional studies for light chain (AL) and transthyretin (ATTR) amyloidosis. The unprecedented availability of effective drugs ignited great interest across various medical specialties, particularly among cardiologists who are now recognizing cardiac amyloidosis at an extraordinary pace. In all amyloidosis referral centers, we are observing a substantial increase in the prevalence of wild-type transthyretin (ATTRwt) cardiomyopathy, which is now becoming the most common form of cardiac amyloidosis. This review focuses on the oral drugs that have been recently introduced for the treatment of ATTR cardiac amyloidosis, for their ease of use in the clinic. They include both old repurposed drugs or fit-for-purpose designed compounds which bind and stabilize the TTR tetramer, thus reducing the formation of new amyloid fibrils, such as tafamidis, diflunisal, and acoramidis, as well as fibril disruptors which have the potential to promote the clearance of amyloid deposits, such as doxycycline. The development of novel therapies is based on the advances in the understanding of the molecular events underlying amyloid cardiomyopathy.
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13
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Lim SS, Kuo L, Chang FP, Chang CC, Yu WC. Prompt diagnosis of a wild-type transthyretin cardiac amyloidosis: Role of multimodality imaging. J Chin Med Assoc 2022; 85:1101-1105. [PMID: 36194162 DOI: 10.1097/jcma.0000000000000817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Amyloidosis cardiomyopathy is a rare and underdiagnosed disease characterized by amyloid fibril deposition in the myocardium. The diagnosis of cardiac amyloidosis is often delayed due to a lack of awareness and the necessity of biopsy to confirm the diagnosis. Recent advances in cardiovascular imaging modalities have enhanced earlier recognition of this disease. A 66-year-old man experiences progressive shortness of breath for two weeks. Laboratory testing was significant for an elevation of cardiac biomarkers (creatine kinase: 522 U/L, troponin I: 0.10 ng/mL) and NT-pro-BNP (5074 pg/mL). He was diagnosed with acute coronary syndrome and received stent deployment. Nonetheless, progressive shortness of breath recurred in 2 months. Transthoracic echocardiography (TTE) demonstrated an increased left ventricular (LV) wall thickness with apical sparing. Cardiac magnetic resonance (CMR) imaging demonstrated high native T1 value, increased extracellular volume fraction as well as diffused subendocardial late gadolinium enhancement. Technetium-99m pyrophosphate (99mTc-PYP) scintigraphy, endomyocardial biopsy (EMB), and the genetic study confirmed the diagnosis of wild-type transthyretin amyloidosis (ATTRwt). The nonspecific clinical manifestations, lack of diagnostic biomarkers, and the rarity of systemic amyloidosis usually lead to delayed diagnosis and treatment. Our objective is to emphasize the role of multimodalities imaging in reducing delays to the diagnosis of cardiac amyloidosis.
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Affiliation(s)
- Su Shen Lim
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ling Kuo
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Internal Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Fu-Pang Chang
- Faculty of Internal Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chun-Chin Chang
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Internal Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Wen-Chung Yu
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Internal Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
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14
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Dispenzieri A, Coelho T, Conceição I, Waddington-Cruz M, Wixner J, Kristen AV, Rapezzi C, Planté-Bordeneuve V, Gonzalez-Moreno J, Maurer MS, Grogan M, Chapman D, Amass L. Clinical and genetic profile of patients enrolled in the Transthyretin Amyloidosis Outcomes Survey (THAOS): 14-year update. Orphanet J Rare Dis 2022; 17:236. [PMID: 35717381 PMCID: PMC9206752 DOI: 10.1186/s13023-022-02359-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/08/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Transthyretin amyloidosis (ATTR amyloidosis) is a rare, life-threatening disease caused by the accumulation of variant or wild-type (ATTRwt amyloidosis) transthyretin amyloid fibrils in the heart, peripheral nerves, and other tissues and organs. METHODS Established in 2007, the Transthyretin Amyloidosis Outcomes Survey (THAOS) is the largest ongoing, global, longitudinal observational study of patients with ATTR amyloidosis, including both inherited and wild-type disease, and asymptomatic carriers of pathogenic TTR mutations. This descriptive analysis examines baseline characteristics of symptomatic patients and asymptomatic gene carriers enrolled in THAOS since its inception in 2007 (data cutoff: August 1, 2021). RESULTS This analysis included 3779 symptomatic patients and 1830 asymptomatic gene carriers. Symptomatic patients were predominantly male (71.4%) and had a mean (standard deviation [SD]) age of symptom onset of 56.3 (17.8) years. Val30Met was the most common genotype in symptomatic patients in South America (80.9%), Europe (55.4%), and Asia (50.5%), and more patients had early- versus late-onset disease in these regions. The majority of symptomatic patients in North America (58.8%) had ATTRwt amyloidosis. The overall distribution of phenotypes in symptomatic patients was predominantly cardiac (40.7%), predominantly neurologic (40.1%), mixed (16.6%), and no phenotype (2.5%). In asymptomatic gene carriers, mean (SD) age at enrollment was 42.4 (15.7) years, 42.4% were male, and 73.2% carried the Val30Met mutation. CONCLUSIONS This 14-year global overview of THAOS in over 5000 patients represents the largest analysis of ATTR amyloidosis to date and highlights the genotypic and phenotypic heterogeneity of the disease. CLINICALTRIALS gov Identifier: NCT00628745.
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Affiliation(s)
| | - Teresa Coelho
- Unidade Corino Andrade, Hospital Santo António, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Isabel Conceição
- Department of Neurosciences, CHULN, Hospital de Santa Maria, Universidade de Lisboa, Lisbon, Portugal
| | - Márcia Waddington-Cruz
- University Hospital, Federal University of Rio de Janeiro, National Amyloidosis Referral Center, CEPARM, Rio de Janeiro, Brazil
| | - Jonas Wixner
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Arnt V Kristen
- Department of Cardiology, Angiology, Respiratory Medicine, Medical University of Heidelberg, Heidelberg, Germany
| | - Claudio Rapezzi
- Cardiological Centre, University of Ferrara, Ferrara, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, Ravenna, Italy
| | | | - Juan Gonzalez-Moreno
- Servicio de Medicina Interna, Hospital Universitario Son Llatzer, Instituto de Investigación Sanitaria Illes Balears, Palma de Mallorca, Spain
| | - Mathew S Maurer
- Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Martha Grogan
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
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15
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Kleefeld F, Scherret E, Knebel F, Messroghli D, Heidecker B, Wetz C, Schatka I, Barzen G, Tschöpe C, Amthauer H, Hahn K. Same same, but different? The neurological presentation of wildtype transthyretin (ATTRwt) amyloidosis. Amyloid 2022; 29:92-101. [PMID: 34994254 DOI: 10.1080/13506129.2021.2014448] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
BACKGROUND Both hereditary transthyretin (ATTRv) amyloidosis and wildtype transthyretin (ATTRwt) amyloidosis can be associated with neurological diseases such as carpal tunnel syndrome and polyneuropathy. While ATTRv amyloidosis has been extensively studied, to date little is known about neurological complications of ATTRwt amyloidosis. In particular, the prevalence, pattern and extent of polyneuropathy and autonomic dysfunction has not been adequately investigated in the context of ATTRwt amyloidosis. To tackle this issue, we aimed to characterise the neurological presentation of ATTRwt amyloidosis and to compare between the presentations of ATTRv and ATTRwt amyloidoses. PATIENTS AND METHODS Between November 2019 and September 2020, we included 50 patients with ATTRwt amyloidosis in this cohort study. All patients presented to the amyloidosis centre in Berlin, Germany and underwent neurological, cardiological and radiological work-up including neurological examination, laboratory testing, nerve conduction studies (NCS), echocardiography and scintigraphy. Patients were screened for symptoms of autonomic dysregulation and a subgroup of patients underwent tilt-table testing for orthostatic dysregulation. RESULTS The cohort included 46 men and 4 women; the mean age of the study participants was 80.6 (standard deviation [SD] ± 5.0) years. All patients showed signs of cardiomyopathy on echocardiography. Neurological examination revealed peripheral, symmetric and length-depended predominately sensory polyneuropathy in 74% (n = 37) of patients. Neuropathy impairment scores (NIS) ranged from 0 to 50 with an average score of 8.4 (SD ± 10.1) indicating mild to moderate impairment. 90% and 92% of patients were classified as FAP stage I and PND stage I, respectively. Unilateral or bilateral carpal tunnel syndrome (CTS) was present in 70% (n = 35) and spinal stenosis was seen in 11% (n = 5) of patients. We detected a low rate of autonomic symptoms with a median COMPASS-31 total score of 18.4 points (IQR 32.4 points). Additional tilt-table testing of a subgroup of 8 patients yielded negative results for orthostatic intolerance. CONCLUSION Distal-symmetric, predominantly sensory polyneuropathy is a common neurological complication in ATTRwt amyloidosis besides carpal tunnel syndrome and spinal stenosis, further substantiating the systemic character of the disease. Compared to ATTRv amyloidosis, the severity of polyneuropathy in ATTRwt amyloidosis is milder and without relevant motor involvement. Symptoms of autonomic dysfunction were not common in this cohort. Nevertheless, ATTRwt amyloidosis is a treatable disease and should be included in the differential diagnosis of sensory polyneuropathy in the elderly.
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Affiliation(s)
- Felix Kleefeld
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin, Germany
| | - Elise Scherret
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin, Germany
| | - Fabian Knebel
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Charité Universitätsmedizin Berlin, Campus Mitte, Germany.,Klinik für Innere Medizin mit Schwerpunkt Kardiologie, Sana Klinikum Lichtenberg, Berlin, Germany
| | - Daniel Messroghli
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Deutsches Herzzentrum Berlin (DHZB), Germany
| | - Bettina Heidecker
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Medizinische Klinik für Kardiologie, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Germany
| | - Christoph Wetz
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Nuklearmedizin, Charité Universitätsmedizin Berlin, Germany
| | - Imke Schatka
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Nuklearmedizin, Charité Universitätsmedizin Berlin, Germany
| | - Gina Barzen
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Charité Universitätsmedizin Berlin, Campus Mitte, Germany
| | - Carsten Tschöpe
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Medizinische Klinik für Kardiologie, Charité Universitätsmedizin Berlin, Campus Virchow, Germany.,Berlin Institute of Health (BIH) at Charite; BIH Center for Regenerative Therapies (BCRT), Charité Universitätsmedizin Berlin, Germany
| | - Holger Amthauer
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Nuklearmedizin, Charité Universitätsmedizin Berlin, Germany
| | - Katrin Hahn
- Amyloidosis Center Charité Berlin (ACCB), Charité Universitätsmedizin Berlin, Germany.,Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin, Germany
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16
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Papagianni A, Ihne S, Zeller D, Morbach C, Üçeyler N, Sommer C. Clinical and apparative investigation of large and small nerve fiber impairment in mixed cohort of ATTR-amyloidosis: impact on patient management and new insights in wild-type. Amyloid 2022; 29:14-22. [PMID: 34632904 DOI: 10.1080/13506129.2021.1976751] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Neuropathy in transthyretin (ATTR) amyloidosis is frequently underdiagnosed, delaying effective treatment. Early detection of large- and small-nerve fiber damage via a comprehensive diagnostic algorithm impacts on clinical management. METHODS A mixed cohort of patients with ATTR amyloidosis (wild type-wt, hereditary-v and TTR gene mutation carriers) of the Interdisciplinary Amyloidosis Centre of Northern Bavaria underwent clinical examination, nerve conduction studies (NCS), quantitative sensory testing (QST), sympathetic skin response (SSR), quantitative sudomotor axon reflex testing (QSART), and skin punch biopsies. RESULTS Out of 30 study participants (7 ATTRv/asymptomatic gene carriers, 23 ATTRwt) large-fiber neuropathy was found in 43% patients with ATTRv and 70% with ATTRwt. QST revealed a mixed small and large fiber impairment in all ATTRv/asymptomatic gene carriers and in 78% of ATTRwt. Autonomic tests were pathological in the majority of ATTRv and over 50% of ATTRwt patients. Skin biopsies (sampled from 19 patients) showed reduced intraepidermal nerve fiber density (IENFD) in all ATTRv/asymptomatic gene carriers and over 80% of ATTRwt. Two ATTRwt patients had a pure small fiber neuropathy. After reviewing for relevant co-morbidities, 44% of ATTRwt patients exhibited neuropathy (large and/or small fiber) without evidence of any other underlying cause. Disease manifestation in the peripheral nervous system was newly diagnosed in three ATTR gene mutation carriers, thereby influencing clinical management. CONCLUSION This comprehensive test program gives new insights regarding the presence of neuropathy in ATTRv and ATTRwt, which impact on patient management.
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Affiliation(s)
- Aikaterini Papagianni
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany.,Interdisciplinary Amyloidosis Center of Northern Bavaria, University Hospital Würzburg, Würzburg, Germany
| | - Sandra Ihne
- Interdisciplinary Amyloidosis Center of Northern Bavaria, University Hospital Würzburg, Würzburg, Germany.,Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Daniel Zeller
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany.,Interdisciplinary Amyloidosis Center of Northern Bavaria, University Hospital Würzburg, Würzburg, Germany
| | - Caroline Morbach
- Interdisciplinary Amyloidosis Center of Northern Bavaria, University Hospital Würzburg, Würzburg, Germany.,Comprehensive Heart Failure Centre (CHFC), University Hospital Würzburg, Würzburg, Germany
| | - Nurcan Üçeyler
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Claudia Sommer
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany.,Interdisciplinary Amyloidosis Center of Northern Bavaria, University Hospital Würzburg, Würzburg, Germany
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17
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González-Moreno J, Losada-López I, Cisneros-Barroso E, Garcia-Pavia P, González-Costello J, Muñoz-Beamud F, Campistol JM, Fernandez-Torron R, Chapman D, Amass L. A Descriptive Analysis of ATTR Amyloidosis in Spain from the Transthyretin Amyloidosis Outcomes Survey. Neurol Ther 2021; 10:833-845. [PMID: 34331265 PMCID: PMC8571440 DOI: 10.1007/s40120-021-00267-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 07/13/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction Transthyretin amyloidosis (ATTR amyloidosis) is a clinically heterogeneous disease caused by mutations in the transthyretin (TTR) gene or aggregation of wild-type transthyretin (ATTRwt). In Spain, there are two large endemic foci of ATTR amyloidosis caused by the Val30Met variant, with additional cases across the country; however, these data may be incomplete, as there is no centralized patient registry. The Transthyretin Amyloidosis Outcomes Survey (THAOS) is an ongoing, global, longitudinal, observational survey of patients with ATTR amyloidosis, including both inherited and wild-type disease, and asymptomatic patients with TTR mutations. This analysis aimed to gain a deeper understanding of the clinical profile of patients with ATTR amyloidosis in Spain. Methods This was a descriptive analysis of the demographic and clinical characteristics of symptomatic patients enrolled at six sites geographically dispersed throughout Spain (data cutoff: January 6, 2020). Patient data at enrollment, including genotype, demographics, and clinical presentation for symptomatic patients, were recorded. Patients were grouped by predominant phenotype based on clinical measures at enrollment: predominantly cardiac, predominantly neurologic, or mixed (cardiac and neurologic). Results There were 379 patients (58.0% male; 63.3% symptomatic) enrolled in the six THAOS sites in Spain. Predominant genotypes were the Val30Met mutation (69.1%) or ATTRwt (15.6%). Predominant phenotype distribution was neurologic (50.4%), mixed (35.8%), and cardiac (13.8%) for all symptomatic patients (n = 240); neurologic (67.8%), mixed (21.2%), and cardiac (11.0%) for symptomatic Val30Met (n = 146); and mixed (64.9%), cardiac (22.8%), and neurologic (12.3%) for symptomatic ATTRwt (n = 57). Symptomatic patients reported a range of ATTR amyloidosis signs and symptoms at enrollment, with autonomic neuropathy and sensory neuropathy common in all phenotypes. Conclusions These results from THAOS highlight the phenotypic heterogeneity associated with ATTR amyloidosis in Spain and the importance of comprehensive neurologic and cardiac evaluations in all patients with ATTR amyloidosis. Trial registration ClinicalTrials.gov: NCT00628745.
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Affiliation(s)
- Juan González-Moreno
- Servicio de Medicina Interna, Hospital Universitario Son Llatzer, Instituto de Investigación Sanitaria Illes Balears, Palma de Mallorca, Spain.
| | - Inés Losada-López
- Servicio de Medicina Interna, Hospital Universitario Son Llatzer, Instituto de Investigación Sanitaria Illes Balears, Palma de Mallorca, Spain
| | - Eugenia Cisneros-Barroso
- Servicio de Medicina Interna, Hospital Universitario Son Llatzer, Instituto de Investigación Sanitaria Illes Balears, Palma de Mallorca, Spain
| | - Pablo Garcia-Pavia
- Department of Cardiology, Hospital Universitario Puerta de Hierro Majadahonda, CIBERCV, Madrid, Spain.,Universidad Francisco de Vitoria, Pozuelo de Alarcon, Spain
| | - José González-Costello
- Servei de Cardiologia, Hospital Universitari de Bellvitge, IDIBELL, Universitat de Barcelona, Barcelona, Spain
| | | | - Josep Maria Campistol
- Department of Nephrology and Renal Transplantation of HCPB, Hospital Clinic, Barcelona, Spain
| | - Roberto Fernandez-Torron
- Biodonostia Health Research Institute, Neuromuscular Area, Hospital Donostia, Neurology Department, 20014, Donostia - San Sebastian, Spain
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18
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Sabbour H, Hasan KY, Al Badarin F, Alibazoglu H, Rivard AL, Romany I, Perlini S. From Clinical Clues to Final Diagnosis: The Return of Detective Work to Clinical Medicine in Cardiac Amyloidosis. Front Cardiovasc Med 2021; 8:644508. [PMID: 34262948 PMCID: PMC8274453 DOI: 10.3389/fcvm.2021.644508] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
Cardiac amyloidosis is frequently misdiagnosed, denying patients the opportunity for timely and appropriate management of the disease. The purpose of this review and case studies is to raise awareness of the diagnostic "red flags" associated with cardiac amyloidosis and the currently available non-invasive strategies for diagnosis. The review focuses on the identification of one of the two main types of cardiac amyloidosis, transthyretin amyloid cardiomyopathy, and non-invasive tools to distinguish this from light-chain amyloidosis. A diagnostic algorithm centered around the use of non-invasive imaging and laboratory analysis is presented. The algorithm generates four differential diagnoses for patients presenting with signs and symptoms consistent with cardiac amyloidosis. Case examples are presented, representing the four potential outcomes of diagnosis using the algorithm. The review provides a guide on how to recognize the often-overlooked presentations of this disease in clinical practice. Non-invasive imaging techniques and diagnostic tools that do not require the involvement of a specialty center have allowed for the improved diagnosis of cardiac amyloidosis. Timely diagnosis of this life-threatening disease is essential for optimal management and it is imperative that clinicians have a high index of suspicion for patients presenting with "red flag" symptoms.
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Affiliation(s)
- Hani Sabbour
- Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates
- Warren Alpert School of Medicine, Brown University, Providence, RI, United States
| | | | | | | | | | - Ingy Romany
- Pfizer Gulf FZ LLC, Dubai, United Arab Emirates
| | - Stefano Perlini
- Emergency Department, Amyloid Research and Treatment Center, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Policlinico San Matteo Foundation, Internal Medicine Department, University of Pavia, Pavia, Italy
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Pinto MV, Dyck PJB, Liewluck T. Neuromuscular amyloidosis: Unmasking the master of disguise. Muscle Nerve 2021; 64:23-36. [PMID: 33458861 DOI: 10.1002/mus.27150] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 12/16/2022]
Abstract
Amyloidosis refers to an etiologically heterogeneous group of protein misfolding diseases, pathologically characterized by extracellular amyloid fibrils producing congophillic amorphous deposits in organs and tissues, which may lead to severe organ dysfunction and mortality. Clinical presentations vary and are often nonspecific, depending on what organs or tissues are affected. In systemic amyloidosis, the peripheral nervous system is commonly affected, whereas the skeletal muscles are only rarely involved. Immunoglobulin light chain (AL) amyloidosis and hereditary transthyretin (ATTRv) amyloidosis are the most frequent types of systemic amyloidosis involving the neuromuscular system. Localized amyloidosis can occur in skeletal muscle, so-called isolated amyloid myopathy. Amyloid neuropathy typically involves small myelinated and unmyelinated sensory and autonomic nerve fibers early in the course of the disease, followed by large myelinated fiber sensory and motor deficits. The relentlessly progressive nature with motor, painful sensory and severe autonomic dysfunction, profound weight loss, and systemic features are distinct characteristics of amyloid neuropathy. Amyloid myopathy presentation differs between systemic amyloidosis and isolated amyloid myopathy. Long-standing symptoms, distal predominant myopathy, markedly elevated creatine kinase level, and lack of peripheral neuropathy or systemic features are highly suggestive of isolated amyloid myopathy. In ATTR and AL amyloidosis, early treatment correlates with favorable outcomes. Therefore, awareness of these disorders and active screening for amyloidosis in patients with neuropathy or myopathy are crucial in detecting these patients in the everyday practice of neuromuscular medicine. Herein, we review the clinical manifestations of neuromuscular amyloidosis and provide a diagnostic approach to this disorder.
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Affiliation(s)
- Marcus V Pinto
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.,Department of Neurology, Federal University of Rio de Janeiro, National Amyloidosis Referral Center (CEPARM), Rio de Janeiro, Brazil
| | - P James B Dyck
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Teerin Liewluck
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
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Peripheral Neuropathy in Wild-Type Amyloidosis: The More You Look, the More You Will Find. Can J Neurol Sci 2021; 48:597-598. [PMID: 33431070 DOI: 10.1017/cjn.2021.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
PURPOSE OF REVIEW Amyloidoses are a group of rare and heterogeneous diseases in which abnormally folded proteins deposit in tissues and lead to organ damage. A brief review of advances in the diagnosis of extracerebral systemic amyloidoses in the context of recent advances in their clinical management is provided. RECENT FINDINGS Although steady progress in the treatment of AL and AA has evolved over many years, significant advances in the treatment of ATTR, transthyretin-derived amyloidosis, have been achieved only recently. This coincides with the emergence of nontissue diagnosis of cardiac ATTR in both the hereditary and wild-type settings. The latter is emerging as possibly the most prevalent type of systemic amyloidosis.Available treatments are amyloid protein type dependent and, hence, following amyloid detection, amyloid protein typing is necessary. Although mass spectrometry has emerged as the preferred method of amyloid typing, careful application of immune methods is still clinically useful but caution and experience, as well as awareness of the limitations of each method, are necessary in their interpretation. SUMMARY Despite significant advances in the treatment of the systemic amyloidoses, outcomes remain poor, primarily due to delays in diagnosis. Precise diagnosis of the amyloid protein type is critical for treatment selection.
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