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Shen SP, Hou HA, Huang KC, Goh CH, Qiu H, Rothwell LA, Wu KW, Chandwani H, Liu Y, Tang CH. Healthcare resource utilisation and costs associated with AL amyloidosis: a retrospective matched cohort study. Sci Rep 2024; 14:16915. [PMID: 39043721 PMCID: PMC11266401 DOI: 10.1038/s41598-024-65654-5] [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: 07/15/2023] [Accepted: 06/21/2024] [Indexed: 07/25/2024] Open
Abstract
We conducted a retrospective population-based, matched cohort study using the National Health Insurance Research Database to estimate healthcare resource utilisation (HRU) and costs in patients with newly diagnosed AL amyloidosis in Taiwan. Cases were matched 10:1 by age, sex, and area of residence to patients without AL amyloidosis (comparators) randomly selected from the database during the same time period. Annual all-cause HRU and costs for 3 years were quantified. AL amyloidosis-attributable costs were obtained by subtracting all-cause HRU costs incurred by comparators from cases. The mean age of all patients was 60.78 years and 59.07% were male. Co-morbidities were more frequent in cases than comparators. By 6 months after diagnosis, 12.1% of cases had died versus 0.9% of comparators. In the first year, cases had 103% more outpatient visits, 177% more emergency room visits, were hospitalised 4-times more frequently, and spent 5.5-times more days in hospital than comparators, and total healthcare costs were > sixfold higher. Costs incurred during the first year after diagnosis accounted for 55% of the 3-year cumulative cost. High HRU costs associated with delayed diagnosis and end-organ damage indicate a need for earlier diagnosis and more effective treatments for AL amyloidosis.
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Affiliation(s)
- Shih-Pei Shen
- School of Health Care Administration, College of Management, Taipei Medical University, 11F, Biomedical Technology Building, No.301, Yuantong Rd., Zhonghe Dist., New Taipei City, 235, Taiwan
| | - Hsin-An Hou
- Division of Hematology, Department of Internal Medicine, National Taiwan University Hospital, Zhongzheng District, Taipei City, 100, Taiwan
| | - Kuan-Chih Huang
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Singapore, Singapore
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Taipei, Taiwan
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., NJ, USA
| | - Choo Hua Goh
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Singapore, Singapore
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Taipei, Taiwan
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., NJ, USA
| | - Hong Qiu
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Singapore, Singapore
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., Taipei, Taiwan
- Global Epidemiology, Office of the Chief Medical Officer, Janssen Research & Development, LLC., NJ, USA
| | - Lee Anne Rothwell
- Janssen Medical Affairs Asia Pacific, North Ryde, Australia
- Janssen Medical Affairs Asia Pacific, Singapore, Singapore
| | - Kwang-Wei Wu
- Janssen Medical Affairs Asia Pacific, North Ryde, Australia
- Janssen Medical Affairs Asia Pacific, Singapore, Singapore
| | | | - Yanfang Liu
- Global Real-World Evidence, GCDS, GCSO, Janssen Research & Development LLC, Raritan, USA
| | - Chao-Hsiun Tang
- School of Health Care Administration, College of Management, Taipei Medical University, 11F, Biomedical Technology Building, No.301, Yuantong Rd., Zhonghe Dist., New Taipei City, 235, Taiwan.
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2
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Bellofiore C, Palladini G, Milani P. Options for Rescue Treatment of Patients with AL Amyloidosis Exposed to Upfront Daratumumab. Curr Oncol Rep 2024:10.1007/s11912-024-01561-2. [PMID: 38896184 DOI: 10.1007/s11912-024-01561-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2024] [Indexed: 06/21/2024]
Abstract
PURPOSE OF REVIEW This review aims to assess the therapeutic strategies available for relapsed/refractory patients with immunoglobulin light chain (AL) amyloidosis who received upfront daratumumab-based regimens. RECENT FINDINGS The treatment landscape of AL amyloidosis has changed radically thanks to the introduction in the upfront setting of daratumumab in combination with bortezomib, cyclophosphamide and dexamethasone (DaraCyBorD) which improved patients' outcomes increasing the rate of hematologic and organ responses. However, many patients eventually relapse or are refractory to daratumumab and the best salvage therapy is not well defined yet. In this contest, we reviewed the available therapeutic options after daratumumab failure, and we look towards the current advances in Bcl-2 inhibitors, novel immunotherapeutic agents as chimeric antigen receptor (CAR-T) therapy and bispecific antibodies (bsAbs). Relapsed/refractory AL amyloidosis represent an unmet clinical need and novel targeted drugs require urgent prospective assessment.
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Affiliation(s)
- Claudia Bellofiore
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Viale Golgi, 19, 27100, Pavia, Italy
| | - Giovanni Palladini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Viale Golgi, 19, 27100, Pavia, Italy
| | - Paolo Milani
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Viale Golgi, 19, 27100, Pavia, Italy.
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3
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Wechalekar AD, Fontana M, Quarta CC, Liedtke M. AL Amyloidosis for Cardiologists: Awareness, Diagnosis, and Future Prospects: JACC: CardioOncology State-of-the-Art Review. JACC CardioOncol 2022; 4:427-441. [PMID: 36444232 PMCID: PMC9700258 DOI: 10.1016/j.jaccao.2022.08.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/17/2022] Open
Abstract
Amyloid light chain (AL) amyloidosis is a rare, debilitating, often fatal disease. Symptoms of cardiomyopathy are common presenting features, and patients often are referred to cardiologists. Cardiac amyloid infiltration is the leading predictor of death. However, the variable presentation and perceived rarity of the disease frequently lead to delay in suspecting amyloidosis as a cause of heart failure, leading to misdiagnoses and a marked delay in diagnosis, with devastating consequences for the patient. A median time from symptom onset to correct diagnosis of about 2 years is often too long when median survival from diagnosis for patients with AL amyloidosis and cardiomyopathy is 4 months to 2 years. The authors highlight the challenges to diagnosis, identify gaps in the current knowledge, and summarize novel treatments on the horizon to raise awareness about the critical need for early recognition of symptoms and diagnosis of AL amyloidosis aimed at accelerating treatment and improving outcomes for patients.
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Key Words
- AL amyloidosis
- AL, amyloid light chain
- ASCT, autologous stem cell transplantation
- ATTR, transthyretin
- CMR, cardiac magnetic resonance imaging
- CR, complete response
- CyBorD, cyclophosphamide-bortezomib-dexamethasone
- FLC, free light chain
- Ig, immunoglobulin
- LGE, late gadolinium enhancement
- NT-proBNP, N-terminal pro–brain natriuretic peptide
- PCD, plasma cell dyscrasia
- QoL, quality of life
- VGPR, very good partial response
- awareness
- diagnosis
- future therapies
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Affiliation(s)
| | - Marianna Fontana
- National Amyloidosis Centre, London, United Kingdom
- Royal Free London NHS Foundation Trust, London, United Kingdom
| | - C. Cristina Quarta
- Alexion Pharmaceuticals, AstraZeneca Rare Disease, Boston, Massachusetts, USA
| | - Michaela Liedtke
- Stanford Amyloid Center, Stanford University School of Medicine, Stanford, California, USA
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4
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Sanchorawala V, Palladini G, Minnema MC, Jaccard A, Lee HC, Gibbs S, Mollee P, Venner C, Lu J, Schönland S, Gatt M, Suzuki K, Kim K, Cibeira MT, Beksac M, Libby E, Valent J, Hungria V, Wong SW, Rosenzweig M, Bumma N, Chauveau D, Gries KS, Fastenau J, Tran NP, Qin X, Vasey SY, Weiss BM, Vermeulen J, Ho KF, Merlini G, Comenzo RL, Kastritis E, Wechalekar AD. Health-related quality of life in patients with light chain amyloidosis treated with bortezomib, cyclophosphamide, and dexamethasone ± daratumumab: Results from the ANDROMEDA study. Am J Hematol 2022; 97:719-730. [PMID: 35293006 DOI: 10.1002/ajh.26536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 02/02/2022] [Accepted: 02/28/2022] [Indexed: 12/19/2022]
Abstract
In the phase 3 ANDROMEDA trial, patients treated with daratumumab, bortezomib, cyclophosphamide, and dexamethasone (D-VCd) had significantly higher rates of organ and hematologic response compared with patients who received VCd alone. Here, we present patient-reported outcomes (PROs) from the ANDROMEDA trial. PROs were assessed through cycle 6 using three standardized questionnaires. Treatment effect through cycle 6 was measured by a repeated-measures, mixed-effects model. The magnitude of changes in PROs versus baseline was generally low, but between-group differences favored the D-VCd group. Results were generally consistent irrespective of hematologic, cardiac, or renal responses. More patients in the D-VCd group experienced meaningful improvements in PROs; median time to improvement was more rapid in the D-VCd group versus the VCd group. After cycle 6, patients in the D-VCd group received daratumumab monotherapy and their PRO assessments continued, with improvements in health-related quality of life (HRQoL) reported through cycle 19. PROs of subgroups with renal and cardiac involvement were consistent with those of the intent-to-treat population. These results demonstrate that the previously reported clinical benefits of D-VCd were achieved without decrement to patients' HRQoL and provide support of D-VCd in patients with AL amyloidosis.
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Affiliation(s)
- Vaishali Sanchorawala
- Amyloidosis Center, Department of Hematology Boston University School of Medicine and Boston Medical Center Boston Massachusetts USA
| | - Giovanni Palladini
- Department of Molecular Medicine, University of Pavia Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo Pavia Italy
| | - Monique C. Minnema
- Department of Hematology University Medical Center Utrecht Utrecht Netherlands
| | - Arnaud Jaccard
- Service d'hématologie clinique et de thérapie cellulaire CHU de Limoges Limoges France
| | - Hans C. Lee
- Department of Lymphoma and Myeloma, Division of Cancer Medicine University of Texas, MD Anderson Cancer Center Houston Texas USA
| | - Simon Gibbs
- The Victorian and Tasmanian Amyloidosis Service, Department of Haematology Monash University Eastern Health Clinical School Box Hill Victoria Australia
| | - Peter Mollee
- Department of Hematology Princess Alexandra Hospital and University of Queensland Medical School Brisbane Queensland Australia
| | | | - Jin Lu
- Institute of Hematology Peking University People's Hospital Beijing China
| | - Stefan Schönland
- Amyloidosis Center Universitaetsklinikum Heidelberg Medizinische Klinik V Heidelberg Germany
| | - Moshe Gatt
- Hematology Department Hadassah Medical Center Jerusalem Israel
| | - Kenshi Suzuki
- Department of Hematology Japanese Red Cross Central Medical Center, Shibuya Tokyo Japan
| | - Kihyun Kim
- Department of Medicine Sungkyunkwan University School of Medicine, Samsung Medical Center Seoul South Korea
| | - María Teresa Cibeira
- Amyloidosis and Myeloma Unit Hospital Clinic of Barcelona, IDIBAPS Barcelona Spain
| | - Meral Beksac
- Department of Hematology Ankara University Ankara Turkey
| | - Edward Libby
- Division of Medical Oncology, Department of Medicine University of Washington Seattle Washington USA
| | - Jason Valent
- Department of Hematology and Medical Oncology, Taussig Cancer Center Cleveland Clinic Cleveland Ohio USA
| | - Vania Hungria
- Department of Hematology Clinica São Germano São Paulo Brazil
| | - Sandy W. Wong
- UCSF Helen Diller Family Comprehensive Cancer Center University of California San Francisco California USA
| | - Michael Rosenzweig
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research City of Hope Duarte California USA
| | - Naresh Bumma
- Division of Hematology The Ohio State University Comprehensive Cancer Center Columbus Ohio USA
| | - Dominique Chauveau
- Centre de Référence des Maladies Rénales Rares, Département de Néphrologie et Transplantation d'Organes CHU de Toulouse Toulouse France
| | | | - John Fastenau
- Janssen Research & Development, LLC Raritan New Jersey USA
| | - Nam Phuong Tran
- Janssen Research & Development, LLC Los Angeles California USA
| | - Xiang Qin
- Janssen Research & Development, LLC Spring House Pennsylvania USA
| | - Sandra Y. Vasey
- Janssen Research & Development, LLC Spring House Pennsylvania USA
| | - Brendan M. Weiss
- Janssen Research & Development, LLC Spring House Pennsylvania USA
| | | | | | - Giampaolo Merlini
- Department of Molecular Medicine, University of Pavia Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo Pavia Italy
| | - Raymond L. Comenzo
- Division of Hematology/Oncology, John C. Davis Myeloma and Amyloid Program Tufts Medical Center Boston Massachusetts USA
| | - Efstathios Kastritis
- Department of Clinical Therapeutics National and Kapodistrian University of Athens School of Medicine Athens Greece
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5
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Flanagan K, Kumari R, Miettinen JJ, Haney SL, Varney ML, Williams JT, Majumder MM, Suvela M, Slipicevic A, Lehmann F, Nupponen NN, Holstein SA, Heckman CA. The Peptide-Drug Conjugate Melflufen Modulates the Unfolded Protein Response of Multiple Myeloma and Amyloidogenic Plasma Cells and Induces Cell Death. Hemasphere 2022; 6:e687. [PMID: 35243210 PMCID: PMC8884539 DOI: 10.1097/hs9.0000000000000687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 01/11/2022] [Indexed: 12/25/2022] Open
Abstract
Immunoglobulin light-chain (AL) amyloidosis is a rare disease caused by clonal plasma cell secretion of misfolded light chains that assemble as toxic amyloid fibrils, depositing in vital organs including the heart and kidneys, causing organ dysfunction. Plasma cell-directed therapeutics are expected to reduce production of toxic light chain by eliminating amyloidogenic cells in bone marrow, thereby diminishing amyloid fibril deposition and providing the potential for organ recovery. Melphalan flufenamide (melflufen) is a first-in-class peptide-drug conjugate that targets aminopeptidases and rapidly releases alkylating agents inside tumor cells. Melflufen is highly lipophilic, permitting rapid uptake by cells, where it is enzymatically hydrolyzed by aminopeptidases, resulting in intracellular accumulation of the alkylating agents, including melphalan. Previous data demonstrating sensitivity of myeloma cells to melflufen suggest that the drug might be useful in AL amyloidosis. We describe the effects of melflufen on amyloidogenic plasma cells in vitro and ex vivo, demonstrating enhanced cytotoxic effects in comparison to melphalan, as well as novel mechanisms of action through the unfolded protein response (UPR) pathway. These findings provide evidence that melflufen-mediated cytotoxicity extends to amyloidogenic plasma cells, and support the rationale for the evaluation of melflufen in patients with AL amyloidosis.
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Affiliation(s)
| | - Romika Kumari
- Institute for Molecular Medicine Finland - FIMM, HiLIFE – Helsinki Institute of Life Science, iCAN Digital Precision Cancer Medicine Flagship, University of Helsinki, Finland
| | - Juho J. Miettinen
- Institute for Molecular Medicine Finland - FIMM, HiLIFE – Helsinki Institute of Life Science, iCAN Digital Precision Cancer Medicine Flagship, University of Helsinki, Finland
| | - Staci L. Haney
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Michelle L. Varney
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Jacob T. Williams
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Muntasir M. Majumder
- Institute for Molecular Medicine Finland - FIMM, HiLIFE – Helsinki Institute of Life Science, iCAN Digital Precision Cancer Medicine Flagship, University of Helsinki, Finland
| | - Minna Suvela
- Institute for Molecular Medicine Finland - FIMM, HiLIFE – Helsinki Institute of Life Science, iCAN Digital Precision Cancer Medicine Flagship, University of Helsinki, Finland
| | | | | | | | - Sarah A. Holstein
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Caroline A. Heckman
- Institute for Molecular Medicine Finland - FIMM, HiLIFE – Helsinki Institute of Life Science, iCAN Digital Precision Cancer Medicine Flagship, University of Helsinki, Finland
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6
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Basset M, Kimmich CR, Schreck N, Krzykalla J, Dittrich T, Veelken K, Goldschmidt H, Seckinger A, Hose D, Jauch A, Müller-Tidow C, Benner A, Hegenbart U, Schönland SO. Lenalidomide and dexamethasone in relapsed/refractory immunoglobulin light chain (AL) amyloidosis: results from a large cohort of patients with long follow-up. Br J Haematol 2021; 195:230-243. [PMID: 34341985 DOI: 10.1111/bjh.17685] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/14/2022]
Abstract
Lenalidomide and dexamethasone (RD) is a standard treatment in relapsed/refractory immunoglobulin light chain (AL) amyloidosis (RRAL). We retrospectively investigated toxicity, efficacy and prognostic markers in 260 patients with RRAL. Patients received a median of two prior treatment lines (68% had been bortezomib-refractory; 33% had received high-dose melphalan). The median treatment duration was four cycles. The 3-month haematological response rate was 31% [very good haematological response (VGHR) in 18%]. The median follow-up was 56·5 months and the median overall survival (OS) and haematological event-free survival (haemEFS) were 32 and 9 months. The 2-year dialysis rate was 15%. VGHR resulted in better OS (62 vs. 26 months, P < 0·001). Cardiac progression predicted worse survival (22 vs. 40 months, P = 0·027), although N-terminal prohormone of brain natriuretic peptide (NT-proBNP) increase was frequently observed. Multivariable analysis identified these prognostic factors: NT-proBNP for OS [hazard ratio (HR) 1·71; P < 0·001]; gain 1q21 for haemEFS (HR 1·68, P = 0·014), with a trend for OS (HR 1·47, P = 0·084); difference between involved and uninvolved free light chains (dFLC) and light chain isotype for OS (HR 2·22, P < 0·001; HR 1·62, P = 0·016) and haemEFS (HR 1·88, P < 0·001; HR 1·59, P = 0·008). Estimated glomerular filtration rate (HR 0·71, P = 0·004) and 24-h proteinuria (HR 1·10, P = 0·004) were prognostic for renal survival. In conclusion, clonal and organ biomarkers at baseline identify patients with favourable outcome, while VGHR and cardiac progression define prognosis during RD treatment.
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Affiliation(s)
- Marco Basset
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany.,Department of Molecular Medicine, Amyloidosis Research and Treatment Center, IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Christoph R Kimmich
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
| | - Nicholas Schreck
- Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Julia Krzykalla
- Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tobias Dittrich
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
| | - Kaya Veelken
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Anja Seckinger
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Laboratory of Hematology and Immunology & Labor für Myelomforschung, Vrije Universiteit Brussel (VUB), Jette, Belgium
| | - Dirk Hose
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Laboratory of Hematology and Immunology & Labor für Myelomforschung, Vrije Universiteit Brussel (VUB), Jette, Belgium
| | - Anna Jauch
- Institute of Human Genetics, University Heidelberg, Heidelberg, Germany
| | - Carsten Müller-Tidow
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
| | - Axel Benner
- Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ute Hegenbart
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
| | - Stefan O Schönland
- Division of Hematology/Oncology, Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany.,Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
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7
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Abstract
Amyloidosis is a disorder characterized by misfolded precursor proteins that form depositions of fibrillar aggregates with an abnormal cross-beta-sheet conformation, known as amyloid, in the extracellular space of several tissues. Although there are more than 30 known amyloidogenic proteins, both hereditary and non-hereditary, cardiac amyloidosis (CA) typically arises from either misfolded transthyretin (ATTR amyloidosis) or immunoglobulin light-chain aggregation (AL amyloidosis). Its prevalence is more common than previously thought, especially among patients with heart failure and preserved ejection fraction (HFpEF) and aortic stenosis. If there is a clinical suspicion of CA, focused echocardiography, laboratory screening for the presence of a monoclonal protein (serum and urinary electrophoresis with immunofixation and serum free light-chain ratio), and cardiac scintigraphy with 99mtechnetium-labeled bone-tracers are sensitive and specific initial diagnostic tests. In some cases, more advanced/invasive techniques are necessary and, in the last several years, treatment options for both AL CA and ATTR CA have rapidly expanded. It is important to note that the aims of therapy are different. Systemic AL amyloidosis requires treatment targeted against the abnormal plasma cell clone, whereas therapy for ATTR CA must be targeted to the production and stabilization of the TTR molecule. It is likely that a multistep treatment approach will be optimal for both AL CA and ATTR CA. Additionally, treatment of CA includes the management of restrictive cardiomyopathy with preserved or reduced ejection fraction in addition to treating the amyloid deposition. Future studies are necessary to define optimal management strategies for AL CA and ATTR CA and confirm cardiac response to therapy.
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Affiliation(s)
- Petra Nijst
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - WH Wilson Tang
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA
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8
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Vaxman I, Gertz MA. Worldwide Perspectives of Amyloidosis. Acta Haematol 2020; 143:301-303. [PMID: 32668431 DOI: 10.1159/000509736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 06/26/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Iuliana Vaxman
- Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA
- Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah-Tikva, Israel
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Morie A Gertz
- Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA,
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