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Sarubbi C, Abowali H, Varga C, Landau H. Treatment of AL amyloidosis in the era of novel immune and cellular therapies. Front Oncol 2024; 14:1425521. [PMID: 39007104 PMCID: PMC11239377 DOI: 10.3389/fonc.2024.1425521] [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: 04/29/2024] [Accepted: 05/15/2024] [Indexed: 07/16/2024] Open
Abstract
Light chain (AL) amyloidosis is a plasma cell disorder distinguished from multiple myeloma (MM) by the degree of organ involvement due to tissue deposition of misfolded proteins. Treatments for AL amyloidosis have largely been borrowed from those developed for patients with MM. High-dose chemotherapy followed by autologous stem cell transplant (ASCT) has historically been associated with the best outcomes. The recent incorporation of daratumumab into up front therapy represents a significant advance and has changed the treatment paradigm, calling into question the role of ASCT. The development of very active novel immune and cellular therapies, specifically B cell maturation antigen (BCMA)-directed therapies, has similarly been transformative for patients with MM and is now being studied in patients with AL amyloidosis. These include chimeric antigen receptor (CAR) T cells, bispecific antibodies, and antibody drug conjugates. Although limited, preliminary data in patients with relapsed and refractory AL amyloidosis are showing promising results, and it is expected that the treatment landscape for AL amyloidosis will continue to evolve. Particular attention to safety, potential for organ recovery, and quality of life will be important when evaluating new treatments and/or treatment paradigms.
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Affiliation(s)
- Caitlin Sarubbi
- Department of Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, United States
| | - Hesham Abowali
- Department of Hematology/Oncology, Brookdale University Medical Center, Brooklyn, NY, United States
| | - Cindy Varga
- Department of Hematology, Levine Cancer Institute Atrium Health, Charlotte, NC, United States
| | - Heather Landau
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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Yoon SE, Kim D, Choi JO, Min JH, Kim BJ, Kim JS, Lee JE, Choi JY, Jeon ES, Kim SJ, Kim K. A comprehensive overview of AL amyloidosis disease characteristics accumulated over two decades at a single referral center in Korea. Int J Hematol 2022; 117:706-717. [PMID: 36574171 DOI: 10.1007/s12185-022-03525-3] [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: 10/02/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
BACKGROUND Characteristics of AL amyloidosis across Asia are not well-described in the literature. Thus, we overviewed the incidence and disease characteristics of AL amyloidosis in Korea. METHODS We collected medical records of 302 AL amyloidosis patients and compared survival outcomes by predominant treatment strategy and at four time points: 1995-2003, 2004-2008, 2009-2013, and 2014-2018. RESULTS The median age was 62 years (36-83). One hundred forty-one patients were classified as stage III (26.3%) or IV (47.9%). The patients diagnosed between 2014 and 2018 survived longer than those diagnosed at other time points due to the introduction of bortezomib (p < 0.01). In addition, patients who received upfront ASCT survived longer than those who received salvage ASCT or chemotherapy alone (p < 0.01). However, most of the 85 patients who experienced early death within 6 months were older than 75 years, had BMI less than 20, and had a high disease burden. CONCLUSIONS The incidence of AL amyloid has increased and survival outcomes have improved gradually, most likely due to introduction of novel agents and upfront ASCT. However, not all patients are suitable for these potent treatment modalities, and avoiding early death within 6 months remains a challenge.
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Affiliation(s)
- Sang Eun Yoon
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Darae Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin-Oh Choi
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ju-Hong Min
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Joon Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung-Sun Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Eun Lee
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joon Young Choi
- Departement of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun-Seok Jeon
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Jin Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Kihyun Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea.
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Cutaneous manifestations of monoclonal gammopathy. Blood Cancer J 2022; 12:58. [PMID: 35411042 PMCID: PMC9001632 DOI: 10.1038/s41408-022-00661-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/17/2022] [Accepted: 02/23/2022] [Indexed: 12/29/2022] Open
Abstract
Monoclonal gammopathy associated with dermatological manifestations are a well-recognized complication. These skin disorders can be associated with infiltration and proliferation of a malignant plasma cells or by a deposition of the monoclonal immunoglobulin in a nonmalignant monoclonal gammopathy. These disorders include POEMS syndrome, light chain amyloidosis, Schnitzler syndrome, scleromyxedema and TEMPI syndrome. This article provides a review of clinical manifestations, diagnostics criteria, natural evolution, pathogenesis, and treatment of these cutaneous manifestations.
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Huang X, Ren G, Chen W, Guo J, Zhao L, Zeng C, Ge Y, Liu Z. The role of induction therapy before autologous stem cell transplantation in low disease burden AL amyloidosis patients. Amyloid 2021; 28:75-83. [PMID: 33084412 DOI: 10.1080/13506129.2020.1835635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Induction therapy is recommended before autologous stem cell transplantation (ASCT) for AL amyloidosis patients with high disease burden [bone marrow plasma cells (BMPCs) > 10%], but the role of induction therapy before ASCT in patients with low disease burden (BMPCs ≤ 10%) is still unknown. METHODS A total of 227 patients with AL amyloidosis were included in this study. Among 227 patients, 124 patients received bortezomib-based induction prior to ASCT and were defined as group A, 35 patients received other chemotherapeutic induction and were defined as group B, and the other 68 patients without induction were defined as group C. We compared the differences of efficacy and prognosis between the three groups. RESULTS The haematological overall response rates (ORR) of groups A, B and C were 91%, 67% and 75%, respectively. The complete response rates (CR) of groups A, B and C were 50%, 25% and 20%, respectively. Both the ORR and CR rates of group A were significantly higher than those of groups B and C. The renal response rates of groups A, B and C were 64%, 46% and 47%, respectively. The cardiac response rates of groups A, B and C were 74%, 45% and 40%, respectively. The renal and cardiac responses rates of group A were also significantly higher than those of the other two groups. After a median follow-up of 44 months, the median OS was not reached. The 5-year estimated overall survival (OS) rates of groups A, B and C were 81%, 57% and 67%, respectively. The median progression-free survival (PFS) was 83 months for all patients. The 5-year estimated PFS rates of groups A, B and C were 61%, 38% and 49%, respectively. Both the OS and PFS of group A were higher than those of both group B and group C. On multivariate analysis, baseline dFLC > 50 mg/L was associated with worse survival, but induction with bortezomib was associated with better survival. CONCLUSION Our study demonstrated that low disease burden AL patients who are eligible for ASCT may benefit from bortezomib-based induction therapy.
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Affiliation(s)
- Xianghua Huang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Guisheng Ren
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Wencui Chen
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Jinzhou Guo
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Liang Zhao
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Caihong Zeng
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Yongchun Ge
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Zhihong Liu
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Cornell RF, Fraser R, Costa L, Goodman S, Estrada-Merly N, Lee C, Hildebrandt G, Gergis U, Farhadfar N, Freytes CO, Kamble RT, Krem M, Kyle RA, Lazarus HM, Marks DI, Meehan K, Patel SS, Ramanathan M, Olsson RF, Wagner JL, Kumar S, Qazilbash MH, Shah N, Hari P, D'Souza A. Bortezomib-Based Induction Is Associated with Superior Outcomes in Light Chain Amyloidosis Patients Treated with Autologous Hematopoietic Cell Transplantation Regardless of Plasma Cell Burden. Transplant Cell Ther 2020; 27:264.e1-264.e7. [PMID: 33781533 DOI: 10.1016/j.jtct.2020.11.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/24/2020] [Accepted: 11/29/2020] [Indexed: 01/03/2023]
Abstract
The benefits of pre-transplant induction chemotherapy in light chain (AL) amyloidosis, a low burden plasma cell (PC) neoplasm associated with multiorgan dysfunction, is debatable, although with the availability of bortezomib, this approach is being increasingly pursued. We analyzed the outcomes of AL amyloidosis patients undergoing autologous hematopoietic cell transplant between 2014 and 2018 that were reported to the Center for International Blood and Marrow Transplant Research database. Of 440 patients, 294 received bortezomib-based induction, and 146 received no induction. Patients receiving induction had greater PC burden compared to no induction (PC 10% or more, 39% versus 11%; P < .01). At 2 years, the induction group compared to no induction had lower relapse/progression: 13% (9% to 18%) versus 23% (16% to 32%) (P = .02); better progression-free survival (PFS): 82% (77% to 87%) versus 69% (61% to 77%) (P < .01); and similar overall survival (OS): 92% (88% to 95%) versus 89% (84% to 94%) (P = .22), findings that were confirmed on multivariate analysis. A subset analysis limited to patients with <10% PC also showed superior relapse/progression (hazard ratio [HR], .43; 95% confidence interval [CI], .24 to .78; P < .01) and PFS (HR, .43; 95% CI, .26 to .72; P < .01) for induction compared to no induction. Thus, we conclude that pre-transplant bortezomib-based induction was associated with improved relapse/progression and PFS in AL amyloidosis. Longer survival follow-up is warranted, as OS was excellent in both cohorts at 2 years.
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Affiliation(s)
| | - Raphael Fraser
- Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin; Division of Biostatistics, Institute for Health and Equity, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Luciano Costa
- Division of Hematology/Oncology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Stacey Goodman
- Vanderbilt University Medical Center, Nashville, Tennessee
| | - Noel Estrada-Merly
- Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Cindy Lee
- Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | | | - Usama Gergis
- Department of Medical Oncology, Division of Hematological Malignancies, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Nosha Farhadfar
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, FL
| | | | - Rammurti T Kamble
- Division of Hematology and Oncology, Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas
| | - Maxwell Krem
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | | | - Hillard M Lazarus
- University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, Ohio
| | - David I Marks
- Adult Bone Marrow Transplant, University Hospitals Bristol NHS Trust, Bristol, United Kingdom
| | - Kenneth Meehan
- Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Sagar S Patel
- Blood and Marrow Transplant Program, University of Utah, Salt Lake City, Utah
| | - Muthalagu Ramanathan
- Division of Hematology and Oncology, Department of Medicine, UMass Memorial Medical Center, Worcester, Massachusetts
| | - Richard F Olsson
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Clinical Research Sormland, Uppsala University, Uppsala, Sweden
| | - John L Wagner
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | | | - Ninah Shah
- Division of Hematology-Oncology, University of California San Francisco, San Francisco, California
| | - Parameswaran Hari
- Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Anita D'Souza
- Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin.
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Chih S, McDonald M, Dipchand A, Kim D, Ducharme A, Kaan A, Abbey S, Toma M, Anderson K, Davey R, Mielniczuk L, Campbell P, Zieroth S, Bourgault C, Badiwala M, Clarke B, Belanger E, Carrier M, Conway J, Doucette K, Giannetti N, Isaac D, MacArthur R, Senechal M. Canadian Cardiovascular Society/Canadian Cardiac Transplant Network Position Statement on Heart Transplantation: Patient Eligibility, Selection, and Post-Transplantation Care. Can J Cardiol 2020; 36:335-356. [PMID: 32145863 DOI: 10.1016/j.cjca.2019.12.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 12/17/2022] Open
Abstract
Significant practice-changing developments have occurred in the care of heart transplantation candidates and recipients over the past decade. This Canadian Cardiovascular Society/Canadian Cardiac Transplant Network Position Statement provides evidence-based, expert panel recommendations with values and preferences, and practical tips on: (1) patient selection criteria; (2) selected patient populations; and (3) post transplantation surveillance. The recommendations were developed through systematic review of the literature and using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system. The evolving areas of importance addressed include transplant recipient age, frailty assessment, pulmonary hypertension evaluation, cannabis use, combined heart and other solid organ transplantation, adult congenital heart disease, cardiac amyloidosis, high sensitization, and post-transplantation management of antibodies to human leukocyte antigen, rejection, cardiac allograft vasculopathy, and long-term noncardiac care. Attention is also given to Canadian-specific management strategies including the prioritization of highly sensitized transplant candidates (status 4S) and heart organ allocation algorithms. The focus topics in this position statement highlight the increased complexity of patients who undergo evaluation for heart transplantation as well as improved patient selection, and advances in post-transplantation management and surveillance that have led to better long-term outcomes for heart transplant recipients.
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Affiliation(s)
- Sharon Chih
- University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
| | - Michael McDonald
- Peter Munk Cardiac Centre, University Health Network, Toronto, Ontario, Canada
| | - Anne Dipchand
- Labatt Family Heart Centre, Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Daniel Kim
- University of Alberta, Edmonton, Alberta, Canada
| | - Anique Ducharme
- Institut de Cardiologie de Montréal, Université de Montréal, Montréal, Québec, Canada
| | | | - Susan Abbey
- Centre for Mental Health, University Health Network and Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Mustafa Toma
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Kim Anderson
- Halifax Infirmary, Department of Medicine-Cardiology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ryan Davey
- University of Western Ontario, London, Ontario, Canada
| | - Lisa Mielniczuk
- University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | | | | | - Christine Bourgault
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, Québec
| | - Mitesh Badiwala
- Peter Munk Cardiac Centre, University Health Network and Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | | | | | - Michel Carrier
- Department of Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Jennifer Conway
- Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
| | | | | | - Debra Isaac
- University of Calgary, Calgary, Alberta, Canada
| | | | - Mario Senechal
- Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Université Laval, Laval, Québec, Canada
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Gertz MA, Schonland S. Stem Cell Mobilization and Autologous Transplant for Immunoglobulin Light-Chain Amyloidosis. Hematol Oncol Clin North Am 2020; 34:1133-1144. [PMID: 33099429 DOI: 10.1016/j.hoc.2020.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Stem cell transplantation was one of the first proven effective regimens for the management of immunoglobulin light-chain amyloidosis. Criteria for patient selection and the mobilization regimen become important features in ensuring a safe outcome. The technique of stem cell transplantation has evolved considerably in parallel with the development of new chemotherapeutic agents for the management of amyloidosis. Optimal outcomes require both the use of effective novel agent induction and appropriate application of high-dose chemotherapy with subsequent stem cell reconstitution.
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Affiliation(s)
- Morie A Gertz
- Division of Hematology, Mayo Clinic, 200 Southwest First Street, W10, Rochester, MN 55905, USA.
| | - Stefan Schonland
- Department of Internal Medicine V, Division of Hematology/Oncology, Amyloidosis Center, Heidelberg University Hospital, Im Neuenheimer Feld 450, Heidelberg 69120, Germany
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Gertz MA. Immunoglobulin light chain amyloidosis: 2020 update on diagnosis, prognosis, and treatment. Am J Hematol 2020; 95:848-860. [PMID: 32267020 DOI: 10.1002/ajh.25819] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 01/10/2023]
Abstract
DISEASE OVERVIEW Immunoglobulin light chain amyloidosis is a clonal, nonproliferative plasma cell disorder in which fragments of immunoglobulin light or heavy chain are deposited in tissues. Clinical features depend on organs involved but can include heart failure with preserved ejection fraction, nephrotic syndrome, hepatic dysfunction, peripheral/autonomic neuropathy, and "atypical smoldering multiple myeloma or monoclonal gammopathy undetermined significance (MGUS)." DIAGNOSIS Tissue biopsy stained with Congo red demonstrating amyloid deposits with apple-green birefringence is required for diagnosis. Invasive organ biopsy is not required in 85% of patients. Verification that amyloid is composed of immunoglobulin light chains is mandatory. The gold standard is laser capture mass spectroscopy. PROGNOSIS N-terminal pro-brain natriuretic peptide (NT-proBNP), serum troponin T, and difference between involved and uninvolved immunoglobulin free light chain (FLC) values are used to classify patients into four groups of similar size; median survivals are 94.1, 40.3, 14.0, and 5.8 months. THERAPY All patients with a systemic amyloid syndrome require therapy to prevent deposition of amyloid in other organs and prevent progressive organ failure. Stem cell transplant (SCT) is preferred, but only 20% of patients are eligible. Requirements for safe SCT include systolic blood pressure >90 mmHg, troponin T < 0.06 ng/mL and serum creatinine ≤1.7 mg/dL. Nontransplant candidates can be offered cyclophosphamide-bortezomib-dexamethasone or daratumumab-containing regimens as it appears to be highly active in AL amyloidosis. FUTURE CHALLENGES Delayed diagnosis remains a major obstacle to initiating effective therapy prior to the development of end-stage organ failure.
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Affiliation(s)
- Morie A. Gertz
- Division of HematologyMayo Clinic Rochester Minnesota USA
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Vaxman I, Dispenzieri A, Muchtar E, Gertz M. New developments in diagnosis, risk assessment and management in systemic amyloidosis. Blood Rev 2019; 40:100636. [PMID: 31706583 DOI: 10.1016/j.blre.2019.100636] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 09/19/2019] [Accepted: 10/29/2019] [Indexed: 12/12/2022]
Abstract
Amyloidosis is a group of disorders characterized by a misfolded protein that deposits in organs and compromise their function. Clinician should have a high index of suspicion because in most cases, the clinical picture is non-specific. Typing of amyloid is of utmost importance and should be an integral part of accurately diagnosing a patient. AL amyloidosis is the most common systemic amyloidosis in the western world in which the misfolded proteins are immunoglobulin light chains secreted by clonal plasma cells. New data about prognostication of AL amyloidosis patients are accumulating. The treatment goal is to eradicate the amyloidogenic plasma cell clone, by using high dose melphalan and/or novel agents (proteasome inhibitors, immunomodulatory drugs, monoclonal antibodies against CD38). Early diagnosis is important for effectively treating the patient as late diagnosis hampers chances for organ recovery. ATTR amyloidosis is less recognized but is increasingly seen due to better recognition and improved diagnostic tools. New data about treatment options (patisiran, inotersen and tafamidis) have recently been published and are discussed.
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Affiliation(s)
- Iuliana Vaxman
- Division of Hematology, Mayo Clinic, Rochester, MN, USA; Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah-Tikva, Israel; Israel Sackler Faculty of Medicine Tel-Aviv University, Tel-Aviv, Israel
| | | | - Eli Muchtar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Morie Gertz
- Division of Hematology, Mayo Clinic, Rochester, MN, USA.
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Vaxman I, Gertz M. Recent Advances in the Diagnosis, Risk Stratification, and Management of Systemic Light-Chain Amyloidosis. Acta Haematol 2019; 141:93-106. [PMID: 30650422 DOI: 10.1159/000495455] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/15/2018] [Indexed: 12/19/2022]
Abstract
The term amyloidosis refers to a group of disorders in which protein fibrils accumulate in certain organs, disrupt their tissue architecture, and impair the function of the effected organ. The clinical manifestations and prognosis vary widely depending on the specific type of the affected protein. Immunoglobulin light-chain (AL) amyloidosis is the most common form of systemic amyloidosis, characterized by deposition of a misfolded monoclonal light-chain that is secreted from a plasma cell clone. Demonstrating amyloid deposits in a tissue biopsy stained with Congo red is mandatory for the diagnosis. Novel agents (proteasome inhibitors, immunomodulatory drugs, monoclonal antibodies, venetoclax) and autologous stem cell transplantation, used for eliminating the underlying plasma cell clone, have improved the outcome for low- and intermediate-risk patients, but the prognosis for high-risk patients is still grave. Randomized studies evaluating antibodies that target the amyloid deposits (PRONTO, VITAL) were recently stopped due to futility and currently there is an intensive search for novel treatment approaches to AL amyloidosis. Early diagnosis is of paramount importance for effective treatment and prognosis, due to the progressive nature of this disease.
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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 Gertz
- Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA,
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11
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Manwani R, Hegenbart U, Mahmood S, Sachchithanantham S, Kyriakou C, Yong K, Popat R, Rabin N, Whelan C, Dittrich T, Kimmich C, Hawkins P, Schönland S, Wechalekar A. Deferred autologous stem cell transplantation in systemic AL amyloidosis. Blood Cancer J 2018; 8:101. [PMID: 30397193 PMCID: PMC6218452 DOI: 10.1038/s41408-018-0137-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/04/2018] [Accepted: 07/20/2018] [Indexed: 11/09/2022] Open
Abstract
High-dose melphalan with autologous stem cell transplantation (ASCT) can induce durable haematological and organ responses in systemic AL amyloidosis (AL). Stringent selection criteria have improved safety of ASCT in AL but most patients are transplant-ineligible. We report our experience of deferred ASCT in AL patients who were transplant-ineligible at presentation but had improvements in organ function after induction chemotherapy, enabling them to undergo ASCT. Twenty-two AL patients underwent deferred ASCT from 2011 to 2017. All had serial organ function and clonal response assessment. Organ involvement and responses were defined by amyloidosis consensus criteria. All patients were transplant-ineligible at presentation, predominantly due to advanced cardiac involvement. All received bortezomib-based therapy, with 100% haematologic response (86% complete response (CR)/very good partial response (VGPR)), enabling reversal of ASCT exclusion criteria. Patients underwent deferred ASCT for haematologic progression (45%) or consolidation (55%). There was no transplant-related mortality. Haematologic responses post-ASCT: CR 50%, VGPR 27%, PR 18%, non-response 5%. In all, 85.7% achieved cardiac responses. Median overall survival (OS) was not reached. Median progression-free survival (PFS) was 54 months. This selected cohort achieved excellent haematologic responses, organ responses, PFS and OS with deferred ASCT. If larger studies confirm these findings, this may widen the applicability of ASCT in AL.
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Affiliation(s)
- Richa Manwani
- National Amyloidosis Centre, University College London, London, UK
| | - Ute Hegenbart
- Medical Department V, Amyloidosis Centre, University Hospital Heidelberg, Heidelberg, Germany
| | - Shameem Mahmood
- National Amyloidosis Centre, University College London, London, UK
| | | | | | - Kwee Yong
- Department of Haematology, University College London Hospitals, London, UK
| | - Rakesh Popat
- Department of Haematology, University College London Hospitals, London, UK
| | - Neil Rabin
- Department of Haematology, University College London Hospitals, London, UK
| | - Carol Whelan
- National Amyloidosis Centre, University College London, London, UK
| | - Tobias Dittrich
- Medical Department V, Amyloidosis Centre, University Hospital Heidelberg, Heidelberg, Germany
| | - Christoph Kimmich
- Medical Department V, Amyloidosis Centre, University Hospital Heidelberg, Heidelberg, Germany
| | - Philip Hawkins
- National Amyloidosis Centre, University College London, London, UK
| | - Stefan Schönland
- Medical Department V, Amyloidosis Centre, University Hospital Heidelberg, Heidelberg, Germany
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Afrough A, Saliba RM, Hamdi A, Honhar M, Varma A, Cornelison AM, Rondon G, Parmar S, Shah ND, Bashir Q, Hosing C, Popat U, Weber DM, Thomas S, Orlowski RZ, Champlin RE, Qazilbash MH. Impact of Induction Therapy on the Outcome of Immunoglobulin Light Chain Amyloidosis after Autologous Hematopoietic Stem Cell Transplantation. Biol Blood Marrow Transplant 2018; 24:2197-2203. [DOI: 10.1016/j.bbmt.2018.07.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 07/08/2018] [Indexed: 11/29/2022]
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13
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Gertz MA. Immunoglobulin light chain amyloidosis: 2018 Update on diagnosis, prognosis, and treatment. Am J Hematol 2018; 93:1169-1180. [PMID: 30040145 DOI: 10.1002/ajh.25149] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 05/11/2018] [Accepted: 05/11/2018] [Indexed: 11/10/2022]
Abstract
DISEASE OVERVIEW Immunoglobulin light chain amyloidosis is a clonal, nonproliferative plasma cell disorder in which fragments of immunoglobulin light or heavy chain are deposited in tissues. Clinical features depend on organs involved but can include restrictive cardiomyopathy, nephrotic syndrome, hepatic dysfunction, peripheral/autonomic neuropathy, and "atypical multiple myeloma." DIAGNOSIS Tissue biopsy stained with Congo red demonstrating amyloid deposits with apple-green birefringence is required for diagnosis. Invasive organ biopsy is not required because amyloid deposits can be found in bone marrow, salivary gland, or subcutaneous fat aspirate in 85% of patients. Verification that amyloid is composed of immunoglobulin light chains is mandatory. The gold standard is laser capture mass spectroscopy. PROGNOSIS N-terminal pro-brain natriuretic peptide (NT-proBNP), serum troponin T, and difference between involved and uninvolved immunoglobulin free light chain values are used to classify patients into four groups of similar size; median survivals are 94.1, 40.3, 14.0, and 5.8 months. THERAPY All patients with a systemic amyloid syndrome require therapy to prevent deposition of amyloid in other organs and prevent progressive organ failure. Stem cell transplant (SCT) is preferred, but only 20% of patients are eligible. Requirements for safe SCT include systolic blood pressure >90 mm Hg, troponin T < 0.06 ng/mL, age < 70 years, and serum creatinine ≤1.7 mg/dL. Nontransplant candidates can be offered melphalan-dexamethasone or cyclophosphamide-bortezomib-dexamethasone. Daratumumab appears to be highly active in AL amyloidosis. Antibodies designed to dissolve existing amyloid deposits are under study. FUTURE CHALLENGES Delayed diagnosis remains a major obstacle to initiating effective therapy. EDUCATIONAL OBJECTIVES Upon completion of this educational activity, participants will be better able to: Master recognition of clinical presentations that should raise suspicion of amyloidosis. Understand simple techniques for confirming the diagnosis and providing material to classify the protein subunit. Recognize that a tissue diagnosis of amyloidosis does not indicate whether the amyloid is systemic or of immunoglobulin light chain origin. Understand the roles of the newly introduced chemotherapeutic and investigational antibody regimens for the therapy of light chain amyloidosis.
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Affiliation(s)
- Morie A. Gertz
- Division of Hematology; Mayo Clinic; Rochester Minnesota
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Jain T, Kosiorek HE, Kung ST, Shah VS, Dueck AC, Gonzalez-Calle V, Luft S, Reeder CB, Adams R, Noel P, Larsen JT, Mikhael J, Bergsagel L, Stewart AK, Fonseca R. Treatment With Bortezomib-based Therapy, Followed by Autologous Stem Cell Transplantation, Improves Outcomes in Light Chain Amyloidosis: A Retrospective Study. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2018; 18:486-492.e1. [DOI: 10.1016/j.clml.2018.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/19/2018] [Accepted: 04/27/2018] [Indexed: 11/15/2022]
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The Effect and Safety of Bortezomib in the Treatment of AL Amyloidosis: A Systematic Review and Meta-Analysis. Indian J Hematol Blood Transfus 2018; 34:216-226. [PMID: 29622862 DOI: 10.1007/s12288-018-0937-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/27/2018] [Indexed: 01/28/2023] Open
Abstract
Bortezomib began to be used in the treatment of light chain (AL) amyloidosis in recent years. We performed the first meta-analysis of randomized clinical trials and clinical controlled trials to evaluate the effect and safety of bortezomib treatment for AL amyloidosis. We conducted a search (until July 2016) in electronic databases (PubMed databases and the Cochrane Central Register of Controlled Trials bases from the year 2003). There were 205 records we searched and eight studies was included (n = 617 persons). We demonstrated that bortezomib treatment significantly improved overall response rate (ORR), complete response, a cardiac response rate, 2-year overall survival and the risk of neuropathy and reduced overall mortality compared to controls without bortezomib therapy. From the comparison and subgroup analysis of ORR between bortezomib group and no bortezomib group, the patients with bortezomib had a higher ORR, especially patients pretreated with bortezomib before high-dose melphalan followed by autologous stem cell transplant compared to no pretreatment. In addition, patients with bortezomib in standard dosage had significantly higher ORR. According to our results, bortezomib should be used in AL amyloidosis patients to improve response rate and survival rate and future relevant randomized controlled trials require to be performed.
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Hwa YL, Kumar SK, Gertz MA, Lacy MQ, Buadi FK, Kourelis TV, Gonsalves WI, Rajkumar SV, Go RS, Leung N, Kapoor P, Dingli D, Kyle RA, Russell S, lust JA, Hayman SR, Lin Y, Zeldenrust S, Dispenzieri A. Induction therapy pre-autologous stem cell transplantation in immunoglobulin light chain amyloidosis: a retrospective evaluation. Am J Hematol 2016; 91:984-8. [PMID: 27341539 DOI: 10.1002/ajh.24453] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 06/17/2016] [Indexed: 11/10/2022]
Abstract
There is no consensus on whether patients with immunoglobulin light chain amyloidosis (AL) should receive induction therapy prior to an autologous stem cell transplant (ASCT). This study investigated the relationships between baseline bone marrow plasmacytosis (BMPC), cardiac staging, and pre-transplant induction in AL patients. All patients who received ASCT for AL within 12 months of diagnosis were included. Patient characteristics and outcomes were abstracted. Univariate and multivariate modeling was performed. Among 415 AL patients, 35% had induction prior to ASCT. Post-ASCT hematologic CR plus VGPR rates were significantly higher in those with baseline BMPC ≤ 10% compared to BMPC >10% (58% versus 40%, P = 0.0013). Significant risk factors for lack of attainment of CR included attenuated dose melphalan conditioning, baseline BMPC > 10%, no induction, and male gender. The 5-year OS for the entire group was 65%. On multivariate analysis, risk factors for inferior OS included no induction therapy, advanced AL amyloid staging, BMPC > 10%, attenuated conditioning melphalan dose, and male gender. Patients with Mayo 2012 stage I-II patients with BMPC ≤ 10%, who comprised 56% of the ASCT population fared exceedingly well regardless of whether or not they received induction therapy with a 5-year OS of 81 to 83%. Induction therapy pre-ASCT may improve outcomes among AL patients due to a rapid reduction of toxic light chains or alternatively by elimination of less fit patients by "testing" their ability to tolerate chemotherapy. Prospective studies will be required to sort out these and other questions. Am. J. Hematol. 91:984-988, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yi L. Hwa
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | - Shaji K. Kumar
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | - Morie A. Gertz
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | - Martha Q. Lacy
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | | | | | | | | | - Ronald S. Go
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | - Nelson Leung
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | | | - David Dingli
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | - Robert A. Kyle
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | | | - John A. lust
- Division of Hematology; Mayo Clinic; Rochester Minnesota
| | | | - Yi Lin
- Division of Hematology; Mayo Clinic; Rochester Minnesota
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Gertz MA. Immunoglobulin light chain amyloidosis: 2016 update on diagnosis, prognosis, and treatment. Am J Hematol 2016; 91:947-56. [PMID: 27527836 DOI: 10.1002/ajh.24433] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 05/22/2016] [Indexed: 02/01/2023]
Abstract
DISEASE OVERVIEW Immunoglobulin light chain amyloidosis is a clonal, nonproliferative plasma cell disorder in which fragments of immunoglobulin light chain are deposited in tissues. Clinical features depend on organs involved but can include restrictive cardiomyopathy, nephrotic syndrome, hepatic failure, peripheral/autonomic neuropathy, and atypical multiple myeloma. DIAGNOSIS Tissue biopsy stained with Congo red demonstrating amyloid deposits with applegreen birefringence is required for diagnosis. Invasive organ biopsy is not required because amyloid deposits can be found in bone marrow biopsy or subcutaneous fat aspirate in 85% of patients. Verification that amyloid is composed of immunoglobulin light chains is mandatory. PROGNOSIS N-terminal pro-brain natriuretic peptide (NTproBNP), serum troponin T, and difference between involved and uninvolved immunoglobulin free light chain values are used to classify patients into four groups of similar size; median survivals are 94.1, 40.3, 14.0, and 5.8 months. THERAPY All patients with a systemic amyloid syndrome require therapy to prevent deposition of amyloid in other organs and prevent progressive organ failure of involved sites. Stem cell transplant (SCT) is preferred, but only 20% of patients are eligible. Requirements for safe SCT include systolic blood pressure >90 mmHg, troponin T <0.06 ng mL21, age <70 years, and serum creatinine 1.7 mg dL21. Nontransplant candidates can be offered melphalan-dexamethasone or cyclophosphamide-bortezomib-dexamethasone. Other combinations of chemotherapy with agents such as cyclophosphamide-thalidomide (or lenalidomide)-dexamethasone, bortezomib-dexamethasone, and melphalan-prednisone-lenalidomide have documented activity. Antibodies designed to dissolve existing amyloid deposits are under study for previously treated and untreated patients. Late diagnosis remains a major obstacle to initiating effective therapy. Am. J. Hematol., 2016. © 2016 Wiley Periodicals, Inc. Am. J. Hematol. 91:948-956, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Morie A. Gertz
- Division of Hematology; Mayo Clinic; Rochester Minnesota
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Outcomes of autologous hematopoietic cell transplantation in primary amyloidosis after bortezomib-based induction therapy. Bone Marrow Transplant 2016; 51:732-4. [PMID: 26726941 DOI: 10.1038/bmt.2015.326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tsukada N, Ikeda M, Shingaki S, Miyazaki K, Meshitsuka S, Yoshiki Y, Abe Y, Suzuki K. High-dose melphalan and autologous stem cell transplantation for systemic light-chain amyloidosis: a single institution retrospective analysis of 40 cases. Int J Hematol 2015; 103:299-305. [PMID: 26703787 DOI: 10.1007/s12185-015-1922-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/08/2015] [Accepted: 12/11/2015] [Indexed: 10/22/2022]
Abstract
We report our retrospective analysis of 40 patients who received high-dose melphalan and autologous stem cell transplantation for systemic immunoglobulin light-chain (AL) amyloidosis. Between 2006 and 2013, 40 patients with AL amyloidosis were transplanted at our medical center. Their median age was 54 years (range 32-70 years): 18 were male. The dominant organs involved were the heart in 13 patients, and kidney in 22: and other organs were involved in five. The median melphalan dose administered was 129 (range 50-200) mg/m(2), and the median infused CD34(+) cells was 2.69 (range 1.17-11.26) × 10(6)/kg. Of the 40 patients, 30 are alive after a median follow-up of 42 (range 12-94) months, and the 4-year estimated overall survival rate was 74% (95% CI 56-86%). Four patients died ≤ 100 days post-ASCT (heart failure in three patients, bacteremia in one). The 4-year estimated survival of the patients with cardiac involvement was 54%, significantly lower than that of the other patients (91%). Hematological and organ responses were 52 and 50%, respectively. Careful patient selection and experienced management are important, especially for patients with cardiac involvement. It is also important to develop additional treatment for patients who do not achieve a hematological and/or organ response.
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Affiliation(s)
- Nobuhiro Tsukada
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan.
| | - Masahiro Ikeda
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Sumito Shingaki
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Kanji Miyazaki
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Sohsuke Meshitsuka
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Yumiko Yoshiki
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Yu Abe
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
| | - Kenshi Suzuki
- Department of Hematology, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan
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Using Novel Agents and Stem Cell Transplantation to Optimally Manage Immunoglobulin Light Chain Amyloidosis. Biol Blood Marrow Transplant 2015; 21:1339-40. [DOI: 10.1016/j.bbmt.2015.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 04/13/2015] [Indexed: 11/15/2022]
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Cornell RF, Zhong X, Arce-Lara C, Atallah E, Blust L, Drobyski WR, Fenske TS, Pasquini MC, Rizzo JD, Saber W, Hari PN. Bortezomib-based induction for transplant ineligible AL amyloidosis and feasibility of later transplantation. Bone Marrow Transplant 2015; 50:914-7. [DOI: 10.1038/bmt.2015.73] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 02/13/2015] [Accepted: 02/24/2015] [Indexed: 01/12/2023]
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Hayashi T, Ikeda H, Igarashi T, Maruyama Y, Aoki Y, Nojima M, Ishida T, Shinomura Y. Autologous stem cell transplantation for AL amyloidosis: adjustment of melphalan dose by factors including BNP. Int J Hematol 2014; 100:554-8. [PMID: 25281404 DOI: 10.1007/s12185-014-1680-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 09/19/2014] [Accepted: 09/21/2014] [Indexed: 11/26/2022]
Abstract
High-dose melphalan with autologous stem cell transplantation (HDM/ASCT) is a promising treatment option for eligible patients with systemic immunoglobulin light chain (AL) amyloidosis. We present the results of ASCT following risk-adapted melphalan conditioning on the basis of criteria proposed by our group, including B-type natriuretic peptide (BNP). Ten patients with primary systemic AL amyloidosis treated at our institute were evaluated. A full dose of melphalan (200 mg/m(2)) was administered to patients who met all the following: performance status, 0 or 1; number of organs involved, 2 or less; serum creatinine, 1.5 mg/dL or less; EF 50 % or more and BNP 200 pg/mL or less; otherwise 140 mg/m(2). The hematologic complete response was achieved in four and organ response was seen in two patients. The median event-free survival (EFS) of all patients was 21.5 months, and median overall survival (OS) was 47.0 months. EFS and OS were significantly longer for patients who received 200 mg/m(2) of melphalan than for those who received lower dose (EFS: not reached vs. 13.9 months, P = 0.0217; OS: not reached vs. 13.8 months, P = 0.0186). No treatment-related mortality within 100 days from ASCT was observed. Evaluation of cardiac diastolic function may contribute to safer HDM/ASCT and improve outcome of AL amyloidosis.
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Affiliation(s)
- Toshiaki Hayashi
- Department of Gastroenterology, Rheumatology, and Clinical Immunology, Sapporo Medical University School of Medicine, South 1, West 16, Chuou-ku, Sapporo, Hokkaido, Japan,
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