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Anand SK, Staron A, Mendelson LM, Joshi T, Burke N, Sanchorawala V, Verma A. Machine-learning based subgroups of AL amyloidosis and cumulative incidence of mortality and end stage kidney disease. Am J Hematol 2024. [PMID: 39257247 DOI: 10.1002/ajh.27472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 08/09/2024] [Accepted: 08/13/2024] [Indexed: 09/12/2024]
Abstract
Immunoglobulin light chain (AL) amyloidosis is a multisystem disease with varied treatment options and disease-related outcomes. Current staging systems rely on a limited number of cardiac, renal, and plasma cell dyscrasia biomarkers. To improve prognostication for all-cause mortality and end-stage kidney disease (ESKD), we applied unsupervised machine learning using a comprehensive set of clinical and laboratory parameters. Our study cohort comprised 2067 patients with newly diagnosed, biopsy-proven AL amyloidosis from the Boston University Amyloidosis Center. Variables included 31 clinical symptoms and 28 baseline laboratory values. Our clustering algorithm identified three subgroups of AL amyloidosis (low-risk, intermediate-risk, and high-risk) with distinct clinical phenotypes and median overall survival (OS) estimates of 6.1, 3.7, and 1.2 years, respectively. The 10-year adjusted cumulative incidences of all-cause mortality were 66.8% (95% CI 63.4-70.1), 75.4% (95% CI 72.1-78.6), and 90.6% (95% CI 87.4-93.3) for low, intermediate, and high-risk subgroups. The 10-year adjusted cumulative incidences of end-stage kidney disease (ESKD) were 20.4% (95% CI 6.1-24.5), 37.6% (95% CI 31.8-43.8), and 6.7% (95% CI 2.8-11.3) for low-risk, intermediate-risk, and high-risk subgroups. Finally, we trained a classifier for external validation with high cross-validation accuracy (85% [95% CI 83-86]) using a subset of easily obtainable clinical parameters. This marks an initial stride toward integrating precision medicine into risk stratification of AL amyloidosis for both all-cause mortality and ESKD.
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Affiliation(s)
- Shankara K Anand
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Department of Medicine, Stanford School of Medicine, Stanford, California, USA
| | - Andrew Staron
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
| | - Lisa M Mendelson
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
| | - Tracy Joshi
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
| | - Natasha Burke
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
| | - Vaishali Sanchorawala
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
| | - Ashish Verma
- Amyloidosis Center, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
- Section of Nephrology, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine and Boston Medical Center, Boston, Massachusetts, USA
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Yang X, Huang J, Zhang J, Li J, Tian Z. Prognostic Value of Serum Galectin-3 for Survival in Patients with Cardiac Light-Chain Amyloidosis. J Cardiovasc Dev Dis 2024; 11:202. [PMID: 39057622 PMCID: PMC11277163 DOI: 10.3390/jcdd11070202] [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: 04/13/2024] [Revised: 06/16/2024] [Accepted: 06/22/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Amyloid light-chain (AL) amyloidosis is a multisystem disorder, with cardiac amyloid infiltration being a prevalent manifestation. This study aimed to explore the prognostic value of galectin-3 (Gal-3), a soluble marker associated with fibrosis, inflammation, heart failure, and kidney injury, in patients with cardiac AL amyloidosis. METHODS A total of 60 patients who were diagnosed with cardiac AL amyloidosis from January 2015 to May 2018 were enrolled. The prognostic value of Gal-3 was assessed. Receiver operating characteristic (ROC) curves were used to evaluate the predictive accuracy of Gal-3. A Gal-3 cut-off value was identified to predict survival rates. RESULTS The ROC curves demonstrated a moderate predictive accuracy of Gal-3 for 0.5- and 5-year survival, with area under the curve (AUC) values of 0.722 and 0.788, respectively. A Gal-3 cut-off value of 15.154 ng/mL was found to predict survival. Kaplan-Meier survival analysis revealed a significant difference in mean overall survival between patients with Gal-3 levels below and above the established cut-off (69.2 months versus 42.1 months, respectively; p = 0.036). Multivariate analysis confirmed that Gal-3 > 15.154 ng/mL remained an independent predictor of survival (HR 2.451, 95% CI 1.017-5.910, p = 0.046). CONCLUSIONS This study suggests that Gal-3 holds independent prognostic value for survival in patients with cardiac AL amyloidosis. Gal-3 could potentially enhance the prognostic capabilities of the current soluble markers, thereby improving the management of cardiac AL amyloidosis. However, further validation in larger prospective studies is warranted.
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Affiliation(s)
- Xinglin Yang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China;
| | - Jin Huang
- Department of Internal Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China;
| | - Jinghong Zhang
- Central Clinical School, Monash University, Melbourne, VIC 3004, Australia;
| | - Jian Li
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China;
| | - Zhuang Tian
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China;
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Usuku H, Yamamoto E, Sueta D, Shinriki R, Oike F, Tabata N, Ishii M, Hanatani S, Hoshiyama T, Kanazawa H, Arima Y, Takashio S, Kawano Y, Oda S, Kawano H, Ueda M, Tsujita K. A new staging system using right atrial strain in patients with immunoglobulin light-chain cardiac amyloidosis. ESC Heart Fail 2024; 11:1612-1624. [PMID: 38400613 PMCID: PMC11098642 DOI: 10.1002/ehf2.14710] [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: 07/16/2023] [Revised: 01/09/2024] [Accepted: 01/21/2024] [Indexed: 02/25/2024] Open
Abstract
AIMS There are minimal data on the prognostic impact of right atrial strain during the reservoir phase (RASr) in patients with immunoglobulin light-chain (AL) cardiac amyloidosis. METHODS AND RESULTS Among 78 patients who were diagnosed with AL cardiac amyloidosis at Kumamoto University Hospital from 2007 to 2022, 72 patients with sufficient two-dimensional speckle tracking imaging data without chemotherapy before the diagnosis were retrospectively analysed. During a median follow-up of 403 days, 31 deaths occurred. Age and the rate of male sex were not significantly different between the all-cause death group and the survival group (age, 70.4 ± 8.8 years vs. 67.0 ± 10.0 years, P = 0.14, male sex, 65% vs. 66%, P = 0.91). The estimated glomerular filtration rate (eGFR) was significantly lower, and B-type natriuretic peptide (BNP) and high sensitivity cardiac troponin T (hs-cTnT) were significantly higher, in the all-cause death group versus the survival group (eGFR, 48.2 ± 21.0 mL/min/1.73 m2 vs. 59.4 ± 24.4 mL/min/1.73 m2, P < 0.05, BNP, 725 [360-1312] pg/mL vs. 123 [81-310] pg/mL, P < 0.01, hs-cTnT, 0.12 [0.07-0.18] ng/mL vs. 0.05 [0.03-0.08] ng/mL, P < 0.01). Left ventricular (LV) global longitudinal strain (GLS) (LV-GLS), left atrial strain during the reservoir phase (LASr), right ventricular GLS (RV-GLS), and RASr were significantly lower in the all-cause death group versus the survival group (LV-GLS, 8.5 ± 4.3% vs. 11.8 ± 3.8%, P < 0.01, LASr, 8.8 ± 7.1% vs. 14.3 ± 8.1%, P < 0.01, RV-GLS, 11.6 ± 5.1% vs. 16.4 ± 3.9%, P < 0.01, RASr, 10.2 ± 7.3% vs. 20.7 ± 9.5%, P < 0.01). RASr was significantly associated with all-cause death after adjusting for RV-GLS, LV-GLS and LASr (hazard ratio [HR]: 0.91, 95% confidence interval [95% CI]: 0.83-0.99, P < 0.05). RASr and log-transformed BNP were significantly associated with all-cause death after adjusting for log-transformed troponin T and eGFR (RASr, HR: 0.93, 95% CI: 0.87-1.00, P < 0.05; log-transformed BNP, HR: 2.10, 95% CI: 1.17-3.79, P < 0.05). The optimal cut-off values were RASr: 16.4% (sensitivity: 66%, specificity: 84%, area under curve [AUC]: 0.81) and BNP: 311.2 pg/mL (sensitivity: 83%, specificity: 78%, AUC: 0.82) to predict all-cause mortality using ROC analysis. Kaplan-Meier analysis revealed that patients with low RASr (<16.4%) or high BNP (>311.2 pg/mL) had a significantly high probability of all-cause death (both, P < 0.01). We devised a new staging score by adding 1 point if RASr decreased or BNP levels increased more than each cut-off value. The HR for all-cause death using score 0 as a reference was 5.95 (95% CI: 1.19-29.79; P < 0.05) for score 1 and 23.29 (95% CI: 5.37-100.98; P < 0.01) for score 2. CONCLUSIONS The new staging system using RASr and BNP predicted prognosis in patients with AL cardiac amyloidosis.
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Affiliation(s)
- Hiroki Usuku
- Department of Laboratory MedicineKumamoto University HospitalKumamotoJapan
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Eiichiro Yamamoto
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Daisuke Sueta
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Rumi Shinriki
- Department of Laboratory MedicineKumamoto University HospitalKumamotoJapan
| | - Fumi Oike
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Noriaki Tabata
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Masanobu Ishii
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Shinsuke Hanatani
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Tadashi Hoshiyama
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Hisanori Kanazawa
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Yuichiro Arima
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Seiji Takashio
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Yawara Kawano
- Department of Hematology, Rheumatology, and Infectious Diseases, Graduate School of Medical ScienceKumamoto UniversityKumamotoJapan
| | - Seitaro Oda
- Department of Diagnostic Radiology, Faculty of Life SciencesKumamoto UniversityKumamotoJapan
| | - Hiroaki Kawano
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
| | - Mitsuharu Ueda
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
- Department of Neurology, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical SciencesKumamoto UniversityKumamotoJapan
- Center of Metabolic Regulation of Healthy AgingKumamoto University Faculty of Life SciencesKumamotoJapan
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Ingebrigtsen A, Saeed S, Larsen TH, Reikvam H. Clinical and imaging characteristics of patients with cardiac amyloidosis- a single center observational study. Scand J Clin Lab Invest 2024; 84:193-201. [PMID: 38709651 DOI: 10.1080/00365513.2024.2346908] [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: 12/19/2023] [Accepted: 04/21/2024] [Indexed: 05/08/2024]
Abstract
Amyloidosis is a disease characterized by the deposition of protein fibrils. Cardiac involvement is a significant factor in determining prognosis. This study aimed to examine the clinical profile, outcomes, and long-term mortality rates in patients with transthyretin (ATTR) and amyloid light-chain (AL) amyloidosis. The retrospective cohort study included 94 patients with amyloidosis (69 with AL and 25 with ATTR amyloidosis) diagnosed between 2010 and 2022. The study involved multimodality imaging (ECG, echocardiography and cardiac magnetic resonance (CMR) data and survival analyses. Patients with ATTR amyloidosis were older and had a higher proportion of males compared to those with AL amyloidosis. Cardiac involvement was more prevalent in the ATTR group, including atrial fibrillation (AF), while pleural and pericardial effusion were more frequent in the AL group. Biomarkers such as NT-proBNP and troponin T were significantly elevated in both groups and were associated with all-cause mortality only in univariate analyses. CMR data, especially typical late gadolinium enhancement (LGE) was not associated with increased mortality, while pleural effusion and left atrial dilatation on echocardiography were identified as powerful predictors of mortality. In conclusion, both AL and ATTR amyloidosis exhibited poor outcomes. Cardiac involvement, particularly dilated left atrium and pleural effusion on echocardiography were associated with an increased risk of mortality, while typical LGE on CMR was not.
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Affiliation(s)
- Andreas Ingebrigtsen
- Department of Clinical Science, K.G. Jebsen Center for Myeloid Blood Cancer, University of Bergen, Bergen, Norway
| | - Sahrai Saeed
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Terje Hjalmar Larsen
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Håkon Reikvam
- Department of Clinical Science, K.G. Jebsen Center for Myeloid Blood Cancer, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
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Lé AM, Nogueira M, Coelho A, Ferreira S. Rare cutaneous amyloid lesions as multiple myeloma presenting symptom. Int J Dermatol 2024; 63:e41-e43. [PMID: 38093406 DOI: 10.1111/ijd.16971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/17/2023] [Accepted: 11/30/2023] [Indexed: 01/19/2024]
Affiliation(s)
- Ana Maria Lé
- Department of Dermatology, Centro Hospitalar Universitário de Santo António, Porto, Portugal
| | - Miguel Nogueira
- Department of Dermatology, Centro Hospitalar Universitário de Santo António, Porto, Portugal
| | - André Coelho
- Pathology Department, Centro Hospitalar Universitário de Santo António, Porto, Portugal
| | - Sandra Ferreira
- Department of Dermatology, Centro Hospitalar Universitário de Santo António, Porto, Portugal
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Drayson M, Jennis T, Laketic-Ljubojevic I, Patel D, Pratt G, Renwick S, Richter A, Wheeler R, Sheldon J, Sadler R, Stapleton M, Willis F, Whiston M. Laboratory practice is central to earlier myeloma diagnosis: Utilizing a primary care diagnostic tool and laboratory guidelines integrated into haematology services. Br J Haematol 2024; 204:476-486. [PMID: 38168756 DOI: 10.1111/bjh.19224] [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: 08/14/2023] [Revised: 10/13/2023] [Accepted: 11/13/2023] [Indexed: 01/05/2024]
Abstract
Treatment advances have greatly improved survival, but myeloma is among the worst of all cancers for delayed diagnosis, causing serious morbidities and early deaths. This delay is largely because the symptom profile of myeloma has very low specificity, and in primary care, myeloma is rare. However, initiating the journey to diagnosis simply requires considering myeloma and sending blood to test for monoclonal immunoglobulin. Laboratory tests reliably detect monoclonal immunoglobulin, which is present in 99% of myeloma cases, so why do health care systems have such a problem with delayed diagnosis? The Myeloma UK early diagnosis programme has brought together diverse expertise to investigate this problem, and this article was prepared by the programme's working group for laboratory best practice. It reviews evidence for test requesting, analysis and reporting, for which there is large variation in practice across the United Kingdom. It presents a 'GP Myeloma diagnostic tool' and how it can be integrated into laboratory practice alongside a laboratory best practice tool. It proposes improved requesting and integration with haematology services for reporting and interpretation. Here the laboratory has a central role in creating efficient and cost-effective pathways for appropriate and timely bone marrow examination for myeloma diagnosis.
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Affiliation(s)
- Mark Drayson
- Clinical Immunology Service, University of Birmingham, Birmingham, UK
| | | | | | - Dina Patel
- UK NEQAS Immunology, Immunochemistry & Allergy, Sheffield Teaching Hospitals, Sheffield, UK
| | - Guy Pratt
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | | | - Alex Richter
- Clinical Immunology Service, University of Birmingham, Birmingham, UK
| | - Rachel Wheeler
- Protein Reference Unit, South West London Pathology, St Georges Hospital, London, UK
| | - Joanna Sheldon
- Protein Reference Unit, South West London Pathology, St Georges Hospital, London, UK
| | - Ross Sadler
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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Çavuşoğlu Y, Başarıcı İ, Tüfekçioğlu O, Özpelit E, Özdemir E, Sivrikoz İA, Altay H, Değertekin M, Dinçer İ, İkitimur B, Kahveci G, Bozkurt MF, Erkılıç M, Kaya GÇ, Beksaç M, Salihoğlu A, Tokgözoğlu L. Current barriers and recommendations on the diagnosis of transthyretin amyloid cardiomyopathy: a Delphi study. Front Cardiovasc Med 2024; 11:1299261. [PMID: 38333414 PMCID: PMC10851939 DOI: 10.3389/fcvm.2024.1299261] [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: 09/22/2023] [Accepted: 01/02/2024] [Indexed: 02/10/2024] Open
Abstract
Objectives This study has been conducted to investigate the non-invasive diagnostic journey of patients with a transthyretin amyloid cardiomyopathy (aTTR-CM) in Turkey, identify the challenges and uncertainties encountered on the path to diagnosis from the perspectives of expert physicians, and develop recommendations that can be applied in such cases. Methods This study employed a three-round modified Delphi method and included 10 cardiologists and five nuclear medicine specialists. Two hematologists also shared their expert opinions on the survey results related to hematological tests during a final face-to-face discussion. A consensus was reached when 80% or more of the panel members marked the "agree/strongly agree" or "disagree/strongly disagree" option. Results The panelists unanimously agreed that the aTTR-CM diagnosis could be established through scintigraphy (using either 99mTc-PYP, 99mTc-DPD, or 99mTc-HMPD) in a patient with suspected cardiac amyloidosis (CA) without a further investigation if AL amyloidosis is ruled out (by sFLC, SPIE and UPIE). In addition, scintigraphy imaging performed by SPECT or SPECT-CT should reveal a myocardial uptake of Grade ≥2 with a heart-to-contralateral (H/CL) ratio of ≥1.5. The cardiology panelists recommended using cardiovascular magnetic resonance (CMR) and a detailed echocardiographic scoring as a last resort before considering an endomyocardial biopsy in patients with suspected CA whose scintigraphy results were discordant/inconclusive or negative but still carried a high clinical suspicion of aTTR-CM. Conclusion The diagnostic approach for aTTR-CM should be customized based on the availability of diagnostic tools/methods in each expert clinic to achieve a timely and definitive diagnosis.
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Affiliation(s)
- Yüksel Çavuşoğlu
- Department of Cardiology, Eskisehir Osmangazi University Medical Faculty Hospital, Eskisehir, Turkey
| | - İbrahim Başarıcı
- Department of Cardiology, Akdeniz University Medical Faculty Hospital, Antalya, Turkey
| | - Omaç Tüfekçioğlu
- Department of Cardiology, University of Health Sciences Ankara City Hospital, Ankara, Turkey
| | - Ebru Özpelit
- Department of Cardiology, Dokuz Eylul University Medical Faculty Hospital, Izmir, Turkey
| | - Elif Özdemir
- Department of Nuclear Medicine, Ankara Yildirim Beyazit University, Ankara City Hospital, Ankara, Turkey
| | - İlknur Ak Sivrikoz
- Department of Nuclear Medicine, Eskişehir Osmangazi University Medical Faculty Hospital, Eskisehir, Turkey
| | - Hakan Altay
- Department of Cardiology, Baskent University Medical Faculty Hospital, Istanbul, Turkey
| | - Muzaffer Değertekin
- Department of Cardiology, Yeditepe University Medical Faculty Hospital, Istanbul, Turkey
| | - İrem Dinçer
- Department of Cardiology, Ankara University Medical Faculty Hospital, Ankara, Turkey
| | - Barış İkitimur
- Department of Cardiology, Istanbul University Medical Faculty Hospital, Istanbul, Turkey
| | - Gökhan Kahveci
- Department of Cardiology, Başakşehir Çam Sakura City Hospital, Istanbul, Turkey
| | - Murat Fani Bozkurt
- Department of Nuclear Medicine, Hacettepe University Medical Faculty Hospital, Ankara, Turkey
| | - Metin Erkılıç
- Department of Nuclear Medicine, Akdeniz University Medical Faculty Hospital, Antalya, Turkey
| | - Gamze Çapa Kaya
- Department of Nuclear Medicine, Dokuz Eylul University Medical Faculty Hospital, Izmir, Turkey
| | - Meral Beksaç
- Department of Internal Diseases, Division of Hematology, Ankara University Medical Faculty Hospital, Ankara, Turkey
| | - Ayşe Salihoğlu
- Department of Internal Diseases, Division of Hematology, Istanbul University Medical Faculty Hospital, Istanbul, Turkey
| | - Lale Tokgözoğlu
- Department of Cardiology, Hacettepe University Medical Faculty Hospital, Ankara, Turkey
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8
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Mistry D, Shah SR, Vyas HR, Shah BJ. Painless perianal growth in an elderly male. Indian J Dermatol Venereol Leprol 2024; 90:106-108. [PMID: 37317766 DOI: 10.25259/ijdvl_517_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 02/17/2023] [Indexed: 06/16/2023]
Affiliation(s)
- Deval Mistry
- Department of Dermatology, BJ Medical College, Ahmedabad, Gujarat, India
| | - Shikha R Shah
- Department of Dermatology, BJ Medical College, Ahmedabad, Gujarat, India
| | - Harshita R Vyas
- Department of Dermatology, BJ Medical College, Ahmedabad, Gujarat, India
| | - Bela J Shah
- Department of Dermatology, BJ Medical College, Ahmedabad, Gujarat, India
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Wang J, Zhao Y, Liao P, Huang S, Huang Y, Chen S, Li Y, Zhong L. Immune checkpoint expression patterns on T cell subsets in light-chain amyloidosis: VISTA, PD-1, and TIGIT as potential therapeutic targets. BLOOD SCIENCE 2024; 6:e00181. [PMID: 38226018 PMCID: PMC10789457 DOI: 10.1097/bs9.0000000000000181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/21/2023] [Indexed: 01/17/2024] Open
Abstract
Amyloid light chain (AL) amyloidosis is a rare plasma cell dyscrasia with dismal prognosis. This study aims to investigate the T-cell immune checkpoint expression patterns in systemic AL amyloidosis and its relationship with clinicobiological traits. We examined the frequencies of V-domain immunoglobulin suppressor of T cell activation+ (VISTA+), programmed cell death 1+ (PD-1+), T cell immunoglobulin and mucin-domain-containing-3+ (Tim-3+), T cell immunoreceptor with Ig and ITIM domains+ (TIGIT+) T cells in peripheral blood (PB) and bone marrow (BM) from 19 patients with newly diagnosed AL amyloidosis. Patients with AL amyloidosis had significantly higher percentages of VISTA+ and PD-1+ T cells in PB than healthy individuals (HIs), with no statistical differences in BM. The percentages of some double-positive T cells in PB were also considerably higher in AL amyloidosis than those in HIs. Additionally, the patients with renal involvement had more PD-1+ and TIGIT+ T cells than the patients without, and PD-1+CD3+%, PD-1+CD4+%, PD-1+Treg% were positively correlated with 24-hour proteinuria levels. Furthermore, the AL amyloidosis patients had higher counts of PD-1+ Treg in PB than multiple myeloma (MM) patients, while the MM patients had higher counts of TIGIT+ T cells than AL amyloidosis patients. Collectively, this is the first report of elevated proportions of VISTA+ and PD-1+ T cells in PB of AL amyloidosis patients, indicating an immunosuppressive milieu, and the increased PD-1+ and TIGIT+ T cells were associated with renal damage. VISTA, PD-1, and TIGIT may be potential targets for reversing T-cell exhaustion in AL amyloidosis.
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Affiliation(s)
- Jinghua Wang
- Department of Hematology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Yujie Zhao
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Pengjun Liao
- Department of Hematology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Shuxin Huang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Youxue Huang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Shaohua Chen
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Yangqiu Li
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Liye Zhong
- Department of Hematology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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10
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Stefani G, Kouvata E, Vassilopoulos G. Light-Chain Amyloidosis: The Great Impostor. Life (Basel) 2023; 14:42. [PMID: 38255657 PMCID: PMC10817319 DOI: 10.3390/life14010042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/28/2023] [Accepted: 12/24/2023] [Indexed: 01/24/2024] Open
Abstract
Light-chain amyloidosis (AL) is a disease of protean manifestations due to a wide spectrum of organs that can be affected. The disorder is caused by the deposition of an extracellular amorphous material, the amyloid, which is produced by malignant plasma cells. The latter usually reside in the bone marrow; plasma cell infiltration is often low, in sharp contrast to what we observe in multiple myeloma. The disease may run below the physician's radar for a while before clinical suspicion is raised and targeted tests are performed. In this short review, we try to answer most of the questions that a practicing physician may ask in a relative clinical setting. The text is formed as a series of reader-friendly questions that cover the subject of AL amyloidosis from history to current therapy.
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Affiliation(s)
- Georgia Stefani
- Department of Hematology, Larisa University Hospital, 41110 Larisa, Greece; (G.S.); (G.V.)
| | - Evangelia Kouvata
- Department of Hematology, Larisa University Hospital, 41110 Larisa, Greece; (G.S.); (G.V.)
| | - George Vassilopoulos
- Department of Hematology, Larisa University Hospital, 41110 Larisa, Greece; (G.S.); (G.V.)
- Cell and Gene Therapy Lab, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
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11
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Bargagna F, De Santi LA, Martini N, Genovesi D, Favilli B, Vergaro G, Emdin M, Giorgetti A, Positano V, Santarelli MF. Bayesian Convolutional Neural Networks in Medical Imaging Classification: A Promising Solution for Deep Learning Limits in Data Scarcity Scenarios. J Digit Imaging 2023; 36:2567-2577. [PMID: 37787869 PMCID: PMC10584795 DOI: 10.1007/s10278-023-00897-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 10/04/2023] Open
Abstract
Deep neural networks (DNNs) have already impacted the field of medicine in data analysis, classification, and image processing. Unfortunately, their performance is drastically reduced when datasets are scarce in nature (e.g., rare diseases or early-research data). In such scenarios, DNNs display poor capacity for generalization and often lead to highly biased estimates and silent failures. Moreover, deterministic systems cannot provide epistemic uncertainty, a key component to asserting the model's reliability. In this work, we developed a probabilistic system for classification as a framework for addressing the aforementioned criticalities. Specifically, we implemented a Bayesian convolutional neural network (BCNN) for the classification of cardiac amyloidosis (CA) subtypes. We prepared four different CNNs: base-deterministic, dropout-deterministic, dropout-Bayesian, and Bayesian. We then trained them on a dataset of 1107 PET images from 47 CA and control patients (data scarcity scenario). The Bayesian model achieved performances (78.28 (1.99) % test accuracy) comparable to the base-deterministic, dropout-deterministic, and dropout-Bayesian ones, while showing strongly increased "Out of Distribution" input detection (validation-test accuracy mismatch reduction). Additionally, both the dropout-Bayesian and the Bayesian models enriched the classification through confidence estimates, while reducing the criticalities of the dropout-deterministic and base-deterministic approaches. This in turn increased the model's reliability, also providing much needed insights into the network's estimates. The obtained results suggest that a Bayesian CNN can be a promising solution for addressing the challenges posed by data scarcity in medical imaging classification tasks.
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Affiliation(s)
- Filippo Bargagna
- University of Pisa, Pisa, Italy.
- Fondazione G. Monasterio CNR - Regione Toscana, Pisa, Italy.
| | - Lisa Anita De Santi
- University of Pisa, Pisa, Italy
- Fondazione G. Monasterio CNR - Regione Toscana, Pisa, Italy
| | - Nicola Martini
- Fondazione G. Monasterio CNR - Regione Toscana, Pisa, Italy
| | - Dario Genovesi
- Fondazione G. Monasterio CNR - Regione Toscana, Pisa, Italy
| | | | | | - Michele Emdin
- Scuola Universitaria Superiore 'S. Anna', Pisa, Italy
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12
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Tan M, Chen Y, Ooi M, de Mel S, Tan D, Soekojo C, Tso A, Khoo CY, Tan HZ, Choo J, Lee LK, Diong CP, Goh YT, Hwang W, Linn YC, Ho A, Chng WJ, Nagarajan C. AL amyloidosis: Singapore Myeloma Study Group consensus guidelines on diagnosis, treatment and management. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2023; 52:601-624. [PMID: 38920149 DOI: 10.47102/annals-acadmedsg.2023101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
AL amyloidosis is the most common form of systemic amyloidosis. However, the non-specific nature of presenting symptoms requires the need for a heightened clinical suspicion to detect unexplained manifestations in the appropriate clinical setting. Early detection and treatment are crucial as the degree of cardiac involvement emerges as a primary prognostic predictor of survival in a patient with AL amyloidosis. Following the diagnosis of AL amyloidosis with appropriate tissue biopsies, prompt treatment with a bortezomib, cyclophosphamide and dexamethasone-based first-line induction with or without daratumumab should be initiated. The goal of treatment is to achieve the best haematologic response possible, ideally with involved free light chain <20 mg/L, as it offers the best chance of organ function improvement. Treatment should be changed if patients do not achieve a partial response within 2 cycles of treatment or very good partial response after 4 cycles or after autologous stem cell transplant, as achievement of profound and prolonged clonal responses translates to better organ response and long-term outcomes. Early involvement of multidisciplinary subspecialists such as renal physicians, cardiologists, neurologists, and gastroenterologists for optimal maintenance and support of involved organs is recommended for optimal management of patients with AL amyloidosis.
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Affiliation(s)
- Melinda Tan
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - Yunxin Chen
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - Melissa Ooi
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Sanjay de Mel
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Daryl Tan
- Clinic for Lymphoma, Myeloma and Blood Disorders, Singapore
| | - Cinnie Soekojo
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Allison Tso
- Department of Haematology, Tan Tock Seng Hospital, Singapore
| | - Chun Yuan Khoo
- Department of Cardiology, National Heart Centre, Singapore
| | - Hui Zhuan Tan
- Department of Renal Medicine, Singapore General Hospital, Singapore
| | - Jason Choo
- Department of Renal Medicine, Singapore General Hospital, Singapore
| | - Lian King Lee
- Department of Haematology, Tan Tock Seng Hospital, Singapore
| | | | - Yeow Tee Goh
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - William Hwang
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - Yeh Ching Linn
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - Aloysius Ho
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
| | - Wee Joo Chng
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Chandramouli Nagarajan
- Department of Haematology, Singapore General Hospital, Singapore
- Department of Haematology, National Cancer Centre Singapore, Singapore
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13
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Bergantim R, Caetano A, Silva FF, Tavares I, Ferreira M, Jaime AR, Esteves GV. Diagnosis and referral of patients with AL amyloidosis in Portugal: results from a Delphi panel. Porto Biomed J 2023; 8:e231. [PMID: 37846303 PMCID: PMC10575365 DOI: 10.1097/j.pbj.0000000000000231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 10/18/2023] Open
Abstract
Light chain amyloidosis (AL) is a complex disorder defined by the extracellular deposition of insoluble amyloid fibrils formed by intact or fragmented immunoglobulin light chains, leading to cell dysfunction, rapid organ deterioration, and, ultimately, death. Although the clinical presentation of AL is directly connected to organ involvement, signs and symptoms of AL are frequently nonspecific, misinterpreted, and late recognized. Thus, an early diagnosis combined with effective therapies to cease disease progression and rescue organ function is essential. The aim of this study was to assess the knowledge and characterize the current clinical practice regarding AL diagnosis and referral among Portuguese physicians. A Delphi-like panel (one round only) with a group of national experts from different medical specialties (cardiology, hematology, internal medicine, nephrology, and neurology) was carried out online, in which 30 statements were classified using a 4-point Likert scale. For each statement, the consensus level was set at 70% for "fully agree/disagree" and the majority level was defined as >70% in agreement or disagreement. Although the results suggest the existence of adequate general knowledge of AL amyloidosis, they also disclosed the necessity to raise awareness for this disease. Overall, this Delphi panel revealed a high lack of consensus regarding the diagnosis and early management of patients with AL among different specialties despite the qualified majority obtained in 26 statements. An optimized strategy for AL early diagnosis, transversal to several medical fields, is urgently needed. Moreover, referral centers with access to diagnostic technology and a network of diverse specialties should be established to foster an early diagnosis and better disease approach to boost the possibility of a better outcome for patients with AL.
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Affiliation(s)
- Rui Bergantim
- Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal
- Department of Hematology, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - André Caetano
- Hospital de Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal
| | | | - Isabel Tavares
- Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- Nephrology Service, Centro Hospitalar e Universitário de São João, Porto, Portugal
| | - Manuela Ferreira
- Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
| | - Ana R. Jaime
- Medical Department—Hematology, Janssen-Cilag, S.A., Lisbon, Portugal
| | - Graça V. Esteves
- Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
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14
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Tomkins O, Leblond V, Lunn MP, Viala K, Weil DR, D'Sa S. Investigation and Management of Immunoglobulin M- and Waldenström-Associated Peripheral Neuropathies. Hematol Oncol Clin North Am 2023; 37:761-776. [PMID: 37385714 DOI: 10.1016/j.hoc.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
The immunoglobulin M (IgM)-associated peripheral neuropathies (PN) are a heterogeneous group of disorders representing most paraproteinemic neuropathy cases. They are associated with IgM monoclonal gammopathy of undetermined significance (MGUS) or Waldenström macroglobulinemia. Establishing a causal link between a paraprotein and neuropathy can be challenging but is necessary to adopt an appropriate therapeutic approach. The most common type of IgM-PN is Antimyelin-Associated-Glycoprotein neuropathy, but half of the cases are of other causes. Progressive functional impairment is an indication for treatment, even when the underlying disorder is IgM MGUS, involving either rituximab monotherapy or combination chemotherapy to achieve clinical stabilization.
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Affiliation(s)
- Oliver Tomkins
- Department of Haematology, Centre for Waldenströms Macroglobulinaemia and Related Conditions, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London NW1 2PG, UK. https://twitter.com/tomkinsoliver
| | - Veronique Leblond
- Department of Haematology, Sorbonne University and Pitié Salpêtrière Hospital, 47-83 Bd de l'Hôpital, Paris 75013, France
| | - Michael P Lunn
- National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK
| | - Karine Viala
- Department of Clinical Neurophysiology, Sorbonne University and Pitié Salpêtrière Hospital, 47-83 Bd de l'Hôpital, Paris 75013, France
| | - Damien Roos Weil
- Department of Haematology, Sorbonne University and Pitié Salpêtrière Hospital, 47-83 Bd de l'Hôpital, Paris 75013, France
| | - Shirley D'Sa
- Department of Haematology, Centre for Waldenströms Macroglobulinaemia and Related Conditions, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London NW1 2PG, UK.
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15
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Lacouture Fierro JA, Ribero Vargas DA, Sánchez Cano J, Gaviria Jaramillo LM, Perilla Suarez OG, Galvez Cárdenas KM, Ospina Ospina S. Clinical characterization and outcomes of a cohort of colombian patients with AL Amyloidosis. Colomb Med (Cali) 2023; 54:e2025667. [PMID: 38107838 PMCID: PMC10723764 DOI: 10.25100/cm.v54i3.5667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/30/2023] [Accepted: 09/24/2023] [Indexed: 12/19/2023] Open
Abstract
Background Amyloid light chain (AL) amyloidosis is characterized by amyloid fibril deposition derived from monoclonal immunoglobulin light chains, resulting in multiorgan dysfunction. Limited data exist on the clinical features of AL amyloidosis. Objective This study aims to describe the clinical characteristics, treatments, and outcomes in Colombian patients with AL amyloidosis. Methods A retrospective descriptive study was conducted at three high-complexity centers in Medellín, Colombia. Adults with AL amyloidosis diagnosed between 2012 and 2022 were included. Clinical, laboratory, histological, treatment, and survival data were analyzed. Results The study included 63 patients. Renal involvement was most prevalent (66%), followed by cardiac involvement (61%). Multiorgan involvement occurred in 61% of patients. Amyloid deposition was most commonly detected in renal biopsy (40%). Bortezomib-based therapy was used in 68%, and 23.8% received high-dose chemotherapy with autologous hematopoietic stem cell transplantation (HDCT-ASCT). Hematological response was observed in 95% of patients with available data. Cardiac and renal organ responses were 15% and 14%, respectively. Median overall survival was 45.1 months (95% CI: 22.2-63.8). In multivariate analysis, cardiac involvement was significantly associated with inferior overall survival (HR 3.27; 95% CI: 1.23-8.73; p=0.018), HDCT-ASCT had a non-significant trend towards improved overall survival (HR 0.25; 95% CI: 0.06-1.09; p=0.065). Conclusions In this study of Colombian patients with AL amyloidosis, renal involvement was more frequent than cardiac involvement. Overall survival and multiorgan involvement were consistent with data from other regions of the world. Multivariate analysis identified cardiac involvement and HDCT-AHCT as possible prognostic factors.
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Affiliation(s)
- Jorge Andrés Lacouture Fierro
- Hospital San Vicente Fundación Rionegro , Departamento de Hematología, Rionegro, Colombia
- Universidad de Antioquia, Sección de Hematología Clínica, Departamento de Medicina interna, Facultad de Medicina, Medellín, Colombia
| | - Daniel Andrés Ribero Vargas
- Universidad de Antioquia, Facultad de Medicina Departamento de Medicina interna, Medellín, Colombia
- Hospital Alma Mater de Antioquia, Departamento de Medicina Interna, Medellín, Colombia
| | | | - Lina Maria Gaviria Jaramillo
- Universidad de Antioquia, Sección de Hematología Clínica, Departamento de Medicina interna, Facultad de Medicina, Medellín, Colombia
- Hospital San Vicente Fundación Medellín, Departamento de Hematología, Medellín, Colombia
| | - Oliver Gerardo Perilla Suarez
- Universidad de Antioquia, Sección de Hematología Clínica, Departamento de Medicina interna, Facultad de Medicina, Medellín, Colombia
- Hospital San Vicente Fundación Medellín, Departamento de Hematología, Medellín, Colombia
| | | | - Sigifredo Ospina Ospina
- Universidad de Antioquia, Instituto de Investigaciones Médicas, Facultad de Medicina, Medellín, Colombia
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16
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Usuku H, Yamamoto E, Sueta D, Noguchi M, Fujisaki T, Egashira K, Oike F, Fujisue K, Hanatani S, Arima Y, Takashio S, Kawano Y, Oda S, Kawano H, Matsushita K, Ueda M, Matsui H, Matsuoka M, Tsujita K. Prognostic value of right ventricular global longitudinal strain in patients with immunoglobulin light-chain cardiac amyloidosis. EUROPEAN HEART JOURNAL OPEN 2023; 3:oead048. [PMID: 37214543 PMCID: PMC10196102 DOI: 10.1093/ehjopen/oead048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/24/2023]
Abstract
Aims Left ventricular (LV) global longitudinal strain (GLS) (LV-GLS) is a strong and independent predictor of outcomes in patients with immunoglobulin light-chain (AL) cardiac amyloidosis. This study was performed to investigate whether right ventricular (RV) GLS (RV-GLS) provides prognostic information in patients with AL amyloidosis. Methods and results Among 74 patients who were diagnosed with AL cardiac amyloidosis at Kumamoto University Hospital from December 2005 to December 2022, 65 patients who had enough information for two-dimensional speckle tracking imaging and did not receive chemotherapy before the diagnosis of cardiac amyloidosis were retrospectively analysed. During a median follow-up of 359 days, 29 deaths occurred. In two-dimensional echocardiographic findings, LV-GLS, left atrium reservoir strain (LASr), and RV-GLS were significantly lower in the all-cause death group than in the survival group (LV-GLS: 8.9 ± 4.2 vs. 11.7 ± 3.9, P < 0.01; LASr: 9.06 ± 7.28 vs. 14.09 ± 8.32, P < 0.05; RV-GLS: 12.0 ± 5.1 vs. 16.8 ± 4.0, P < 0.01). Multivariable Cox proportional hazard analysis showed RV-GLS was significantly and independently associated with all-cause death in patients with AL cardiac amyloidosis (hazard ratio 0.85; 95% confidence interval, 0.77-0.94; P < 0.01). Receiver operating characteristic analysis showed that the area under the curve of RV-GLS for all-cause death was 0.774 and that the best cut-off value of RV-GLS was 14.5% (sensitivity, 75%; specificity, 72%). In the Kaplan-Meier analysis, patients with AL cardiac amyloidosis who had low RV-GLS (<14.5%) had a significantly higher probability of all-cause death (P < 0.01). Conclusion RV-GLS has prognostic value in patients with AL cardiac amyloidosis and provides greater prognostic power than LV-GLS and LASr.
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Affiliation(s)
- Hiroki Usuku
- Department of Laboratory Medicine, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | | | - Daisuke Sueta
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Momoko Noguchi
- Department of Laboratory Medicine, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Tomohiro Fujisaki
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Koichi Egashira
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Fumi Oike
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Koichiro Fujisue
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Shinsuke Hanatani
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Yuichiro Arima
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Seiji Takashio
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Yawara Kawano
- Department of Hematology, Rheumatology, and Infectious Diseases, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Seitaro Oda
- Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Hiroaki Kawano
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Kenichi Matsushita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Division of Advanced Cardiovascular Therapeutics, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Mitsuharu Ueda
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Hirotaka Matsui
- Department of Molecular Laboratory Medicine, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Masao Matsuoka
- Department of Hematology, Rheumatology, and Infectious Diseases, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
- Center of Metabolic Regulation of Healthy Aging, Kumamoto University Faculty of Life Sciences, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
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Choudhuri S, Rainone F. Assessment of current clinical practice throughout the UK for the diagnosis and management of monoclonal gammopathy of renal significance. EJHAEM 2023; 4:410-418. [PMID: 37206284 PMCID: PMC10188446 DOI: 10.1002/jha2.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/31/2023] [Indexed: 05/21/2023]
Abstract
Since the inception of the term monoclonal gammopathy of renal significance (MGRS) in 2012 by the International Kidney and Monoclonal Gammopathy Research Group, there have been no consensus guidelines specifically pertaining to the UK regarding to patient management. We aimed to identify both regional and cross-discipline variation in current clinical practice, to provide insight and rationale for a potential standardised pathway in the future. A national survey of 88 consultants from the disciplines of haematology and nephrology was conducted between June 2020 and July 2021. Agreement was evident for aspects of the diagnostic pathway, including presenting features likely to raise suspicion of MGRS and the most pertinent confounding factors to consider before renal biopsy. However, significant variability was identified in both the cohort of diagnostic tests used, as well as urinary work-up for patients with suspected MGRS. Treatment and monitoring frequency was also an aspect of management identified as variable. Despite differences in clinical practice across the UK, MGRS diagnosis was widely regarded to be the joint responsibility of both disciplines. The results provide an indication of inter-regional and interdisciplinary differences in practice, highlighting the need for improved awareness and standardised protocol for management of MGRS that applies to the UK population.
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18
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Caponetti AG, Accietto A, Saturi G, Ponziani A, Sguazzotti M, Massa P, Giovannetti A, Ditaranto R, Parisi V, Leone O, Guaraldi P, Cortelli P, Gagliardi C, Longhi S, Galiè N, Biagini E. Screening approaches to cardiac amyloidosis in different clinical settings: Current practice and future perspectives. Front Cardiovasc Med 2023; 10:1146725. [PMID: 36970351 PMCID: PMC10033591 DOI: 10.3389/fcvm.2023.1146725] [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: 01/17/2023] [Accepted: 02/20/2023] [Indexed: 03/29/2023] Open
Abstract
Cardiac amyloidosis is a serious and progressive infiltrative disease caused by the deposition of amyloid fibrils in the heart. In the last years, a significant increase in the diagnosis rate has been observed owing to a greater awareness of its broad clinical presentation. Cardiac amyloidosis is frequently associated to specific clinical and instrumental features, so called "red flags", and it appears to occur more commonly in particular clinical settings such as multidistrict orthopedic conditions, aortic valve stenosis, heart failure with preserved or mildly reduced ejection fraction, arrhythmias, plasma cell disorders. Multimodality approach and new developed techniques such PET fluorine tracers or artificial intelligence may contribute to strike up extensive screening programs for an early recognition of the disease.
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Affiliation(s)
- Angelo Giuseppe Caponetti
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Antonella Accietto
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Giulia Saturi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Alberto Ponziani
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Maurizio Sguazzotti
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Paolo Massa
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Alessandro Giovannetti
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Raffaello Ditaranto
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Vanda Parisi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Ornella Leone
- Department of Pathology, Cardiovascular and Cardiac Transplant Pathology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Pietro Guaraldi
- IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Pietro Cortelli
- IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and NeuroMotor Sciences (DiBiNeM), Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Christian Gagliardi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologna, Italy
| | - Simone Longhi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologna, Italy
| | - Nazzareno Galiè
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Elena Biagini
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologna, Italy
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19
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Khor YM, Cuddy SAM, Singh V, Falk RH, Di Carli MF, Dorbala S. 99mTc Bone-Avid Tracer Cardiac Scintigraphy: Role in Noninvasive Diagnosis of Transthyretin Cardiac Amyloidosis. Radiology 2023; 306:e221082. [PMID: 36537896 PMCID: PMC9885342 DOI: 10.1148/radiol.221082] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/11/2022] [Accepted: 09/15/2022] [Indexed: 12/24/2022]
Abstract
Transthyretin cardiac amyloidosis (ATTR-CA) is an overlooked cause of heart failure, with substantial morbidity and mortality. The emergence of several novel therapies has fueled the interest in early and accurate diagnosis of ATTR-CA so that potentially life-saving pharmacologic therapy can be administered in a timely manner. The most promising imaging modality and biomarker is SPECT imaging with technetium 99m (99mTc)-radiolabeled bone-seeking tracers, which have high specificity in the diagnosis of ATTR-CA, potentially obviating biopsy. In this article, the authors provide a focused review on the use of 99mTc pyrophosphate (PYP), 3,3-diphosphono-1,2-propanodicarboxylic acid (DPD), and hydroxymethylene diphosphonate (HMDP) for diagnosis of ATTR-CA, present a systematic approach to interpretation of the scans, and highlight several common pitfalls to illustrate important diagnostic principles for accurate interpretation of these images. The authors indicate when to use endomyocardial biopsy for the diagnosis of cardiac amyloidosis and conclude with a section on quantitation of 99mTc-PYP/DPD/HMDP imaging.
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Affiliation(s)
- Yiu Ming Khor
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
| | - Sarah A. M. Cuddy
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
| | - Vasvi Singh
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
| | - Rodney H. Falk
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
| | - Marcelo F. Di Carli
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
| | - Sharmila Dorbala
- From the Department of Nuclear Medicine and Molecular Imaging,
Singapore General Hospital, Singapore (Y.M.K.); Division of Nuclear Medicine and
Molecular Imaging, Department of Radiology (Y.M.K., V.S., M.F.D.C., S.D.),
Cardiac Amyloidosis Program, Division of Cardiology, Department of Medicine
(S.A.M.C., R.H.F., S.D.), and CV Imaging Program, Cardiovascular Division and
Department of Radiology (S.A.M.C., V.S., M.F.D.C., S.D.), Brigham and
Women’s Hospital and Harvard Medical School, 70 Francis St, Boston, MA
02115; and Midwest Heart and Vascular Specialists, HCA Midwest Health, Kansas
City, Mo (V.S.)
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20
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Gubergrits NB, Mozhyna TL, Tsys OV, Rakhmetova VS. GASTRIC AND DUODENAL AMYLOIDOSIS IN AN HIV-INFECTED PATIENT: A CASE REPORT AND A LITERATURE REVIEW. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2023; 76:1121-1129. [PMID: 37326098 DOI: 10.36740/wlek202305109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We report the case of a 38-year-old female with gastrointestinal amyloidosis who presented with acute abdominal pain. The computed tomography scan showed that the patient had generalized lymphadenopathy. This clinical picture with absolute leukocytosis was interpreted as an acute secondary bacterial process of unspecified etiology with generalized lymphadenopathy. The patient was administered a broad-spectrum antibacterial drug and detoxication therapy. The upper endoscopy revealed bleeding of unknown origin. After a 2-day conservative hemostatic therapy, gastric tumor involvement was suggested during control endoscopy. The human immunodeficiency virus (HIV) antibodies were found with the following confirmation of their specificity by immunoblotting. Histopathological study of the biopsy specimens made it possible to diagnose gastrointestinal AA/AL-amyloidosis complicated by gastrointestinal bleeding.
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Affiliation(s)
| | | | - Oleksii V Tsys
- STATE SCIENTIFIC INSTITUTION «CENTER FOR INNOVATIVE MEDICAL TECHNOLOGIES OF THE NATIONAL ACADEMY OF SCIENCES OF UKRAINE», KYIV, UKRAINE
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21
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Parmar K, Benjanuwattra J, Sethi P, Tijani L, Hurst P, Pertuz GD, Argueta‐Sosa E. Cardiac amyloidosis-An underdiagnosed cause of heart failure: A case report and review of literature. Clin Case Rep 2022; 10:e6525. [PMID: 36478969 PMCID: PMC9718913 DOI: 10.1002/ccr3.6525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/14/2022] [Accepted: 10/08/2022] [Indexed: 12/04/2022] Open
Abstract
Restrictive cardiomyopathy secondary to cardiac amyloidosis is an underdiagnosed, but treatable, cause of heart failure involving an extracellular deposition of misfolded protein. Hereby, we report a case of a female patient with history of nephrotic syndrome for 1 year who subsequently presented with symptoms of heart failure. The findings on cardiac imaging supported the suspicion of cardiac amyloidosis. Further laboratory workup for amyloidosis was pursued along with endomyocardial biopsy which confirmed amyloidosis-AL type. Patient was started on chemotherapy. The case underscores the importance of a timely diagnosis with the help of symptomatology and imaging along with a multidisciplinary approach for patient care.
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Affiliation(s)
- Kanak Parmar
- Department of Internal MedicineTexas Tech University Health Sciences CenterLubbockTexasUSA
| | | | - Pooja Sethi
- Department of CardiologyTexas Tech University Health Sciences CenterLubbockTexasUSA
| | - Lukman Tijani
- Department of Hematology‐OncologyTexas Tech University Health Sciences CenterLubbockTexasUSA
| | - Philip Hurst
- Department of Laboratory Medicine and PathologyMayo ClinicRochesterMinnesotaUSA
| | - Gaspar Del‐Rio Pertuz
- Department of Internal MedicineTexas Tech University Health Sciences CenterLubbockTexasUSA
| | - Erwin Argueta‐Sosa
- Department of CardiologyTexas Tech University Health Sciences CenterLubbockTexasUSA
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22
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Luchian ML, Motoc AI. Left ventricle hypertrophy – What else is there? Acta Cardiol 2022; 78:503-504. [DOI: 10.1080/00015385.2022.2146875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Maria-Luiza Luchian
- Department of Cardiology, (Centrum voor Hart-en Vaatziekten), Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Brussels
| | - Andreea Iulia Motoc
- Department of Cardiology, (Centrum voor Hart-en Vaatziekten), Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Brussels
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23
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Martínez JC, Lichtman EI. Localized light chain amyloidosis: A self-limited plasmacytic B-cell lymphoproliferative disorder. Front Oncol 2022; 12:1002253. [PMID: 36457485 PMCID: PMC9705961 DOI: 10.3389/fonc.2022.1002253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 10/24/2022] [Indexed: 08/31/2023] Open
Abstract
Immunoglobulin light chain amyloidosis can be either systemic or localized. Although these conditions share a similar name, they are strikingly different. Localized light chain amyloidosis has been challenging to characterize due to its lower incidence and highly heterogeneous clinical presentation. Here, we review the emerging literature, emphasizing recent reports on large cohorts of patients with localized amyloidosis, and provide insights into this condition's pathology and natural history. We find that patients with localized amyloidosis have an excellent prognosis with overall survival similar to that of the general population. Furthermore, the risk of progression to systemic disease is low and likely represents initial mischaracterization as localized disease. Therefore, we argue for the incorporation of more sensitive techniques to rule out systemic disease at diagnosis. Despite increasing mechanistic understanding of this condition, much remains to be discovered regarding the cellular clonal evolution and the molecular processes that give rise to localized amyloid formation. While localized surgical resection of symptomatic disease is typically the treatment of choice, the presentation of this disease across the spectrum of plasmacytic B-cell lymphoproliferative disorders, and the frequent lack of an identifiable neoplastic clone, can make therapy selection a challenge in the uncommon situation that systemic chemotherapy is required.
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Affiliation(s)
- José C. Martínez
- Division of Hematology, Department of Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Eben I. Lichtman
- Division of Hematology, Department of Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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24
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Feitosa V, Neves P, Jorge L, Noronha I, Onuchic L. Renal amyloidosis: a new time for a complete diagnosis. Braz J Med Biol Res 2022; 55:e12284. [PMID: 36197414 PMCID: PMC9529046 DOI: 10.1590/1414-431x2022e12284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/12/2022] [Indexed: 11/22/2022] Open
Abstract
Amyloidoses are a group of disorders in which soluble proteins aggregate and deposit extracellularly in tissues as insoluble fibrils, causing organ dysfunction. Clinical management depends on the subtype of the protein deposited and the affected organs. Systemic amyloidosis may stem from anomalous proteins, such as immunoglobulin light chains or serum amyloid proteins in chronic inflammation or may arise from hereditary disorders. Hereditary amyloidosis consists of a group of rare conditions that do not respond to chemotherapy, hence the identification of the amyloid subtype is essential for diagnosis, prognosis, and treatment. The kidney is the organ most frequently involved in systemic amyloidosis. Renal amyloidosis is characterized by acellular pathologic Congo red-positive deposition of amyloid fibrils in glomeruli, vessels, and/or interstitium. This disease manifests with heavy proteinuria, nephrotic syndrome, and progression to end-stage kidney failure. In some situations, it is not possible to identify the amyloid subtype using immunodetection methods, so the diagnosis remains indeterminate. In cases where hereditary amyloidosis is suspected or cannot be excluded, genetic testing should be considered. Of note, laser microdissection/mass spectrometry is currently the gold standard for accurate diagnosis of amyloidosis, especially in inconclusive cases. This article reviews the clinical manifestations and the current diagnostic landscape of renal amyloidosis.
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Affiliation(s)
- V.A. Feitosa
- Divisão de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil,Divisão de Medicina Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P.D.M.M. Neves
- Divisão de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil,Divisão de Medicina Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L.B. Jorge
- Divisão de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - I.L. Noronha
- Divisão de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L.F. Onuchic
- Divisão de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil,Divisão de Medicina Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
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25
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[The consensus of the diagnosis of monoclonal gammopathies of clinical significance in China (2022)]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2022; 43:631-635. [PMID: 36709146 PMCID: PMC9593018 DOI: 10.3760/cma.j.issn.0253-2727.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Indexed: 01/30/2023]
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26
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Santarelli MF, Genovesi D, Scipioni M, Positano V, Favilli B, Giorgetti A, Vergaro G, Landini L, Emdin M, Marzullo P. Cardiac amyloidosis characterization by kinetic model fitting on [18F]florbetaben PET images. J Nucl Cardiol 2022; 29:1919-1932. [PMID: 33864226 DOI: 10.1007/s12350-021-02608-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 03/11/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To evaluate the feasibility of kinetic modeling-based approaches from [18F]-Flobetaben dynamic PET images as a non-invasive diagnostic method for cardiac amyloidosis (CA) and to identify the two AL- and ATTR-subtypes. METHODS AND RESULTS Twenty-one patients with diagnoses of CA (11 patients with AL-subtype and 10 patients with ATTR-subtype of CA) and 15 Control patients with no-CA conditions underwent PET/CT imaging after [18F]Florbetaben bolus injection. A two-tissue-compartment (2TC) kinetic model was fitted to time-activity curves (TAC) obtained from left ventricle wall and left atrium cavity ROIs to estimate kinetic micro- and macro-parameters. Combinations of kinetic parameters were evaluated with the purpose of distinguishing Control subjects and CA patients, and to correctly label the last ones as AL- or ATTR-subtype. Resulting sensitivity, specificity, and accuracy for Control subjects were: 0.87, 0.9, 0.89; as far as CA patients, the sensitivity, specificity, and accuracy were respectively 0.9, 1, and 0.97 for AL-CA patients and 0.9, 0.92, 0.97 for ATTR-CA patients. CONCLUSION Pharmacokinetic analysis based on a 2TC model allows cardiac amyloidosis characterization from dynamic [18F]Florbetaben PET images. Estimated model parameters allows to not only distinguish between Control subjects and patients, but also between AL- and ATTR-amyloid patients.
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Affiliation(s)
- M F Santarelli
- CNR Institute of Clinical Physiology, CNR Research Area - Via Moruzzi, 1, 56124, Pisa, Italy.
- Fondazione Toscana "G. Monasterio", Pisa, Italy.
| | - D Genovesi
- Fondazione Toscana "G. Monasterio", Pisa, Italy
| | - M Scipioni
- CNR Institute of Clinical Physiology, CNR Research Area - Via Moruzzi, 1, 56124, Pisa, Italy
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - V Positano
- Fondazione Toscana "G. Monasterio", Pisa, Italy
| | - B Favilli
- Fondazione Toscana "G. Monasterio", Pisa, Italy
| | - A Giorgetti
- Fondazione Toscana "G. Monasterio", Pisa, Italy
| | - G Vergaro
- Scuola Universitaria Superiore 'S. Anna", Pisa, Italy
| | - L Landini
- Fondazione Toscana "G. Monasterio", Pisa, Italy
- Dipartimento di Ingegneria dell'Informazione: DII, Pisa University, Pisa, Italy
| | - M Emdin
- Fondazione Toscana "G. Monasterio", Pisa, Italy
- Scuola Universitaria Superiore 'S. Anna", Pisa, Italy
| | - P Marzullo
- Fondazione Toscana "G. Monasterio", Pisa, Italy
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27
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Wang YD, Yang YY, Wu YY, Sun CY. [Value of (11)C-PiB PET/MRI in the evaluation of organ involvement in primary systemic light chain amyloidosis]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2022; 43:316-322. [PMID: 35680631 PMCID: PMC9189481 DOI: 10.3760/cma.j.issn.0253-2727.2022.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the value of (11)C-PiB PET/MRI for evaluating organ involvement in patients with primary light chain amyloidosis (pAL) . Methods: The clinical data of 20 patients with pAL and 3 healthy volunteers from January 2019 to October 2021 were retrospectively analyzed. The correlation between the organ involvement evaluated by clinical standards and PET/MRI was compared. The relationship between cardiac-related biological indicators, disease stage, and the maximum standardized uptake value (SUVmax) were analyzed. The relationship between 24-hour urinary protein quantification and kidney SUVmax was analyzed. Results: ①In 20 patients (18 newly diagnosed patients and 2 non-newly diagnosed patients) ,(11)C-PiB positive uptake was observed in the heart (15 patients, 75%) , lung (8 patients, 40%) , bone marrow (10 patients, 50%) , muscle (10 patients, 50%) , tongue muscle (7 patients, 35%) , thyroid (6 patients, 30%) , salivary gland (4 patients, 20%) , spleen (2 patients, 10%) , and stomach wall (1 patient, 5%) . ②Organ involvement on (11)C-PiB PET/MRI showed good correlations with the clinical evaluation criteria for the heart and bone marrow. The positive rate of PET/MRI evaluation in the lung, spleen, gland, muscle, and tongue muscle was significantly higher than the clinical criteria. However, (11)C-PiB PET/MRI has limitations in the evaluation of the nervous system and fat tissue. ③To analyze the relationship between cardiac-related biological indexes and the SUVmax of the heart in 13 newly diagnosed patients. Patients with left ventricular ejection fraction (LVEF) <50% and interventricular septal thickness (ISV) ≥1.2 cm showed a higher SUVmax than patients with LVEF ≥50% and ISV<1.2 cm (P<0.05) .There are significant differences in the SUVmax of the heart between the Mayo2004 stage and the Mayo2012 stage. The later the disease stage, the higher the SUVmax (P<0.05) . The SUVmax of the heart was positively correlated with cardiac troponin I (cTnI) and N-terminal pro-brain natriuretic peptide (NT-proBNP) (P<0.01) .There was no significant correlation between renal SUVmax and 24-hour urine protein (P>0.05) . Conclusion: Whole body (11)C-PiB PET/MRI, as a visualization system of amyloid protein, is used to qualitatively evaluate organ involvement, which can improve the level of early non-invasive diagnosis. Whole body (11)C-PiB PET/MRI can be used to perform quantitative evaluation of organ levels, especially the heart, which is expected to evaluate organ function and predict disease prognosis more accurately.
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Affiliation(s)
- Y D Wang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Yang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Wu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - C Y Sun
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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28
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When to Suspect and How to Approach a Diagnosis of Amyloidosis. Am J Med 2022; 135 Suppl 1:S2-S8. [PMID: 35081377 DOI: 10.1016/j.amjmed.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/14/2022] [Indexed: 11/22/2022]
Abstract
Diagnoses of amyloidosis, particularly transthyretin amyloid cardiomyopathy (ATTR-CM), are steadily increasing throughout the world, but the condition remains underdiagnosed. Patients with amyloidosis may present to a range of medical and surgical specialties, often with multisystemic disease, and a high index of clinical suspicion is required for diagnosis. Bone scintigraphy and cardiovascular magnetic resonance (CMR) imaging offer highly sensitive and specific imaging modalities for cardiac amyloidosis. Histological confirmation of amyloid deposition and amyloid type remains the cornerstone of diagnosis for most amyloid types, with transthyretin amyloid cardiomyopathy the exception, which may be diagnosed by validated nonbiopsy diagnostic criteria in the majority. Histological diagnosis of amyloid has been enhanced by laser capture microdissection and tandem mass spectrometry. Early diagnosis and treatment prior to the development of end-organ damage remains essential to improving morbidity and mortality for patients with amyloidosis.
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29
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Lama N, Briasoulis A, Karavasilis E, Stamatelopoulos K, Chasouraki A, Alexopoulou E, Spiliopoulos S, Theodorakakou F, Dimopoulos MA, Kastritis E, Kelekis NL. The utility of splenic imaging parameters in cardiac magnetic resonance for the diagnosis of immunoglobulin light-chain amyloidosis. Insights Imaging 2022; 13:55. [PMID: 35348907 PMCID: PMC8964909 DOI: 10.1186/s13244-022-01194-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/19/2022] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Cardiac magnetic resonance (CMR) imaging is a key test in the diagnosis of cardiac amyloidosis (CA). Extracardiac involvement is common in light chain (AL) amyloidosis and MRI findings may assist in its diagnosis. We sought to investigate the utility of splenic CMR parameters for the diagnosis of CA. METHODS Thirty-four patients with AL amyloidosis and 32 patients with severe left ventricular hypertrophy in the setting of aortic stenosis (LVH-AS) who completed 3T cardiac MRI at the time of their diagnosis of AL or LVH-AS were assessed with T1, T2 (modified Look-Locker inversion recovery), extracellular volume (ECV) mapping, and late gadolinium enhancement (LGE) imaging of the heart and spleen. RESULTS Age, left ventricular mass index, wall thickness, ejection fraction, and splenic dimensions did not differ significantly between groups. All AL patients had cardiac involvement. T1 and T2 spleen mapping did not differ significantly between groups but AL patients had higher median ECV in the spleen than in LVH-AS (AL 46.9%, LVH-AS: 31%, p < 0.001), and significantly lower short tau inversion recovery ratio (AL: 1.7, LVH-AS: 2.7, p < 0.001) both with very good diagnostic performance to diagnose AL. We identified 16 AL patients with spleen involvement and 16 without. Spleen ECV and "normalized" spleen ratio, defined as the ratio of spleen LGE to muscle values exhibited strong correlation and had excellent diagnostic performance to discriminate those with spleen involvement. CONCLUSION Our findings show that spleen CMR parameters can identify spleen involvement in AL patients and differentiate them from those without AL amyloidosis.
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Affiliation(s)
- Niki Lama
- Research Unit of Radiology and Medical Imaging, 2nd Department of Radiology, Medical School, Faculty of Medicine, National and Kapodistrian University of Athens, Papadiamantopoulou 19, 11528, Athens, Greece.
| | - Alexandros Briasoulis
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece.
| | - Efstratios Karavasilis
- Research Unit of Radiology and Medical Imaging, 2nd Department of Radiology, Medical School, Faculty of Medicine, National and Kapodistrian University of Athens, Papadiamantopoulou 19, 11528, Athens, Greece
| | - Kimon Stamatelopoulos
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece
| | - Angeliki Chasouraki
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece
| | - Efthymia Alexopoulou
- Research Unit of Radiology and Medical Imaging, 2nd Department of Radiology, Medical School, Faculty of Medicine, National and Kapodistrian University of Athens, Papadiamantopoulou 19, 11528, Athens, Greece
| | - Stavros Spiliopoulos
- Research Unit of Radiology and Medical Imaging, 2nd Department of Radiology, Medical School, Faculty of Medicine, National and Kapodistrian University of Athens, Papadiamantopoulou 19, 11528, Athens, Greece
| | - Foteini Theodorakakou
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece
| | - Meletios Athanasios Dimopoulos
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece
| | - Efstathios Kastritis
- Department of Clinical Therapeutics, Medical School, Faculty of Medicine, National Kapodistrian University of Athens, Vasilissis Sofias 80, 11528, Athens, Greece
| | - Nikolaos L Kelekis
- Research Unit of Radiology and Medical Imaging, 2nd Department of Radiology, Medical School, Faculty of Medicine, National and Kapodistrian University of Athens, Papadiamantopoulou 19, 11528, Athens, Greece
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Amyloid Cardiomyopathy in Older Adults. CURRENT GERIATRICS REPORTS 2022. [DOI: 10.1007/s13670-022-00374-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mendelson L, Sanchorawala V, Connors L, Joshi T, Doros G, Pogrebinsky A, Havasi A. Correlation Between 24-Hour Urine Protein and Random Urine Protein-to-Creatinine Ratio in AL Amyloidosis. Kidney Med 2022; 4:100427. [PMID: 35342879 PMCID: PMC8942830 DOI: 10.1016/j.xkme.2022.100427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Santarelli MF, Genovesi D, Positano V, Di Sarlo R, Scipioni M, Giorgetti A, Landini L, Marzullo P. Cardiac amyloidosis detection by early bisphosphonate (99mTc-HMDP) scintigraphy. J Nucl Cardiol 2022; 29:307-318. [PMID: 32596791 DOI: 10.1007/s12350-020-02239-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To determine one or more indexes able to detect the presence of cardiac amyloidosis (CA) from planar scintigraphy images after injection of 99mTc-HMDP tracer and to identify the earliest acquisition time able to ensure an accurate diagnosis of amyloid transthyretin CA. METHODS AND RESULTS A total of 38 patients were included: 18 subjects with a final diagnosis of ATTR-CA and 20 controls. Dynamic planar images of the anterior thorax were acquired, starting at intravenous injection of ≈ 700 MBq of 99mTc-HMDP. From time/activity curves (TAC) of regions of interest such as heart, vascular region, right ribcage, and soft tissues, several indices were considered. From the analysis, it resulted that both TACHeart/Bone(t) and RIheart-bone(t), for t > 6 minutes, well distinguish ATTR-CA patients from controls subjects. This is confirmed by the area under curves (AUC) analysis giving AUC values =.9 at t ≅ 6 minutes and AUC ≅ 1 for t > 10 minutes. CONCLUSIONS The method proposed allows determining the presence of ATTR-CA, in an inexpensive manner both in terms of examination costs and time spent.
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Affiliation(s)
- M F Santarelli
- CNR Institute of Clinical Physiology, CNR Research Area, Via Moruzzi 1, 56124, Pisa, Italy.
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy.
| | - D Genovesi
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy
| | - V Positano
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy
| | - R Di Sarlo
- Dipartimento di Ingegneria dell'Informazione: DII, Pisa University, Via Caruso 16, Pisa, Italy
| | - M Scipioni
- CNR Institute of Clinical Physiology, CNR Research Area, Via Moruzzi 1, 56124, Pisa, Italy
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - A Giorgetti
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy
| | - L Landini
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy
- Dipartimento di Ingegneria dell'Informazione: DII, Pisa University, Via Caruso 16, Pisa, Italy
| | - P Marzullo
- Fondazione Toscana "G. Monasterio", CNR Research Area, Via Moruzzi 1, Pisa, Italy
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Demko IV, Pelinovskaya LI, Kraposhina AY, Selin VE, Ryazanov AE, Verigo YI, Mosina VA. [Case of lifetime diagnosis of isolated primary amyloidosis of the heart]. KARDIOLOGIIA 2022; 62:106-108. [PMID: 35168540 DOI: 10.18087/cardio.2022.1.n1049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/15/2020] [Accepted: 06/29/2020] [Indexed: 06/14/2023]
Abstract
The article presents a case of intravital diagnosis of a rare heart disease, isolated primary amyloidosis. The clinical onset of the disease was heart failure (HF) that was resistant to treatment; chemotherapy was ineffective and was poorly tolerated by the patient. The diagnostics was based on a combination of refractory HF and changes in echocardiography data (atrial dilatation, small size of the left ventricular cavity, interventricular septal hypertrophy with the presence of hyperechoic inclusions of the "granular fluorescence" type), and changes detected by contrast-enhanced cardiac magnetic resonance imaging. The diagnosis of amyloidosis was confirmed by results of pathohistological examination of the material obtained during autopsy.
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Affiliation(s)
- I V Demko
- Krasnoyarsk state medical university by prof. Voino-Yasenetsky V.F., Krasnoyarsk
| | - L I Pelinovskaya
- Krasnoyarsk state medical university by prof. Voino-Yasenetsky V.F., Krasnoyarsk
| | - A Yu Kraposhina
- Krasnoyarsk state medical university by prof. Voino-Yasenetsky V.F., Krasnoyarsk
| | - V E Selin
- Krasnoyarsk state medical university by prof. Voino-Yasenetsky V.F., Krasnoyarsk
| | | | | | - V A Mosina
- Krasnoyarsk state medical university by prof. Voino-Yasenetsky V.F., Krasnoyarsk
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Dispenzieri A, Kastritis E, Wechalekar AD, Schönland SO, Kim K, Sanchorawala V, Landau HJ, Kwok F, Suzuki K, Comenzo RL, Berg D, Liu G, Kumar A, Faller DV, Merlini G. A randomized phase 3 study of ixazomib-dexamethasone versus physician's choice in relapsed or refractory AL amyloidosis. Leukemia 2022; 36:225-235. [PMID: 34168284 PMCID: PMC8727292 DOI: 10.1038/s41375-021-01317-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/26/2021] [Accepted: 06/02/2021] [Indexed: 12/14/2022]
Abstract
In the first phase 3 study in relapsed/refractory AL amyloidosis (TOURMALINE-AL1 NCT01659658), 168 patients with relapsed/refractory AL amyloidosis after 1-2 prior lines were randomized to ixazomib (4 mg, days 1, 8, 15) plus dexamethasone (20 mg, days 1, 8, 15, 22; n = 85) or physician's choice (dexamethasone ± melphalan, cyclophosphamide, thalidomide, or lenalidomide; n = 83) in 28-day cycles until progression or toxicity. Primary endpoints were hematologic response rate and 2-year vital organ deterioration or mortality rate. Only the first primary endpoint was formally tested at this interim analysis. Best hematologic response rate was 53% with ixazomib-dexamethasone vs 51% with physician's choice (p = 0.76). Complete response rate was 26 vs 18% (p = 0.22). Median time to vital organ deterioration or mortality was 34.8 vs 26.1 months (hazard ratio 0.53; 95% CI, 0.32-0.87; p = 0.01). Median treatment duration was 11.7 vs 5.0 months. Adverse events of clinical importance included diarrhea (34 vs 30%), rash (33 vs 20%), cardiac arrhythmias (26 vs 15%), nausea (24 vs 14%). Despite not meeting the first primary endpoint, all time-to-event data favored ixazomib-dexamethasone. These results are clinically relevant to this relapsed/refractory patient population with no approved treatment options.
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Affiliation(s)
- Angela Dispenzieri
- grid.66875.3a0000 0004 0459 167XDivision of Hematology, Mayo Clinic, Rochester, NY USA
| | - Efstathios Kastritis
- grid.5216.00000 0001 2155 0800Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Ashutosh D. Wechalekar
- grid.83440.3b0000000121901201National Amyloidosis Centre, Royal Free London NHS Foundation Trust, University College London, London, UK
| | - Stefan O. Schönland
- grid.5253.10000 0001 0328 4908Department of Medicine V (Hematology, Oncology and Rheumatology), Amyloidosis Center Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Kihyun Kim
- grid.264381.a0000 0001 2181 989XDivision of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Vaishali Sanchorawala
- Amyloidosis Center, Boston University School of Medicine, Boston Medical Center, Boston, MA USA
| | - Heather J. Landau
- grid.51462.340000 0001 2171 9952Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Fiona Kwok
- grid.413252.30000 0001 0180 6477Clinical Haematology, Westmead Hospital, Sydney, NSW Australia
| | - Kenshi Suzuki
- grid.414929.30000 0004 1763 7921Department of Hematology, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Raymond L. Comenzo
- grid.67033.310000 0000 8934 4045John C. Davis Myeloma and Amyloid Program, Tufts Medical Center, Boston, MA USA
| | - Deborah Berg
- grid.419849.90000 0004 0447 7762Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA USA
| | - Guohui Liu
- grid.419849.90000 0004 0447 7762Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA USA
| | - Arun Kumar
- grid.419849.90000 0004 0447 7762Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA USA
| | - Douglas V. Faller
- grid.419849.90000 0004 0447 7762Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA USA
| | - Giampaolo Merlini
- grid.8982.b0000 0004 1762 5736Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, Department of Molecular Medicine, University of Pavia, Pavia, Italy
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Du AX, Gniadecki R, Osman M. Biomarkers of B cell activation in autoimmune connective tissue diseases: More than markers of disease activity. Clin Biochem 2021; 100:1-12. [PMID: 34822848 DOI: 10.1016/j.clinbiochem.2021.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 12/25/2022]
Abstract
B cells play a central role in the pathogenesis of many autoimmune diseases, acting as antigen-presenting cells, producing inflammatory cytokines, and acting as a source of autoantibodies after differentiating into plasma cells. In this review, we aim to summarize and synthesize the literature for the utility of biomarkers of B cell activation (plasma immunoglobulins (Ig), free light chains (FLCs), and beta-2 microglobulin (β2M)) in monitoring inflammatory rheumatic connective tissue diseases, such as Sjogren's syndrome (SS), systemic lupus erythematosus (SLE), dermatomyositis (DM), and systemic sclerosis (SSc). Clinically, it is quite difficult to gauge prognosis in these conditions as there, historically, have not been many quantitative markers of disease activity available. From our extensive literature review, Ig, FLC, and β2M may function as invaluable prognostic markers of ongoing disease activity, and potentially as biomarkers for response to therapy or disease relapse. They are inexpensive and unsophisticated tests that are vastly underused in the setting of autoimmune disease. However, clinicians still need to be aware of the potential of false positives in times of infection or plasma cell dyscrasia, as these disease states can artificially increase these biomarkers. Ultimately, the utility of serum Ig, FLCs, and β2M is clearly delineated in SS and SLE, and least investigated in DM, and additional prospective studies utilizing these biomarkers, and specific B cell targeted therapies are still needed.
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Affiliation(s)
- Amy X Du
- Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Robert Gniadecki
- Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Mohamed Osman
- Division of Rheumatology, Department of Medicine, University of Alberta, Edmonton, AB, Canada.
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Qian M, Qin L, Shen K, Guan H, Ren H, Zhao Y, Guan Y, Zhou D, Peng B, Li J, Chen L. Light-Chain Amyloidosis With Peripheral Neuropathy as an Initial Presentation. Front Neurol 2021; 12:707134. [PMID: 34650504 PMCID: PMC8505956 DOI: 10.3389/fneur.2021.707134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 08/24/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: This study aimed to better understand the clinical, electrophysiological, pathological features and prognosis of peripheral nerve involvements in primary immunoglobulin light-chain (AL) amyloidosis. Methods: We retrospectively reviewed the clinical data of eight AL amyloidosis patients with peripheral neuropathy as the initial presentation including clinical features, histopathological findings and treatment. Results: There were seven males and one female aged from 52 to 66 years. Initial symptoms included symmetrical lower extremity numbness, lower extremity pain and carpal tunnel syndrome. Seven patients suffered from severe pain and required pain management. Six patients had predominant autonomic dysfunction. Six patients had cardiac involvement, and one patient had renal involvement. Monoclonal proteins were found in all patients, with IgA λ in one, IgG λ in two, λ alone in three, κ alone in one and IgM κ in one. Sural nerve biopsies were performed in 7 cases, all of which showed amyloid deposition in the endoneurium (in the perivascular region in some cases), in addition to moderate to severe myelinated fiber loss with axonal degeneration. Six patients were treated with combined chemotherapy. In three patients who began chemotherapy earlier (6-10 months after onset), two achieved a hematological complete response, and one achieved a partial response. three patients who had delayed chemotherapy (36 months after onset) died between 5 and 12 months after diagnosis. Conclusion: Early recognition of AL amyloidosis with peripheral neuropathy as the initial symptom is very important. Nerve biopsy can help to make the diagnosis. Early diagnosis and chemotherapy are critical to achieve better outcomes.
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Affiliation(s)
- Min Qian
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Lan Qin
- Department of Neurology, University of Massachusetts Medical School, Worcester, MA, United States
| | - Kaini Shen
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Hongzhi Guan
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Haitao Ren
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Yanhuan Zhao
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Yuzhou Guan
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Daobin Zhou
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Bin Peng
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Jian Li
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
| | - Lin Chen
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences Beijing, Beijing, China
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Bézard M, Oghina S, Vitiello D, Kharoubi M, Kordeli E, Galat A, Zaroui A, Guendouz S, Gilles F, Shourick J, Hamon D, Audard V, Teiger E, Poullot E, Molinier-Frenkel V, Lemonnier F, Agbulut O, Le Bras F, Damy T. Dexamethasone is associated with early deaths in light chain amyloidosis patients with severe cardiac involvement. PLoS One 2021; 16:e0257189. [PMID: 34525116 PMCID: PMC8443042 DOI: 10.1371/journal.pone.0257189] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/26/2021] [Indexed: 11/19/2022] Open
Abstract
Background Cardiac light chain amyloidosis (AL-CA) patients often die within three months of starting chemotherapy. Chemotherapy for non-immunoglobulin M gammopathy with AL-CA frequently includes bortezomib (Bor), cyclophosphamide (Cy), and dexamethasone (D). We previously reported that NT-ProBNP levels can double within 24h of dexamethasone administration, suggesting a deleterious impact on cardiac function. In this study, we evaluate the role of dexamethasone in early cardiovascular mortality during treatment. Methods and findings We retrospectively assessed 100 de novo cardiac AL patients (62% male, mean age 68 years) treated at our institute between 2009 and 2018 following three chemotherapy regimens: CyBorDComb (all initiated on day 1; 34 patients), DCyBorSeq (D, day 1; Cy, day 8; Bor, day 15; 17 patients), and CyBorDSeq (Cy, day 1; Bor, day 8; D, day 15; 49 patients). The primary endpoint was cardiovascular mortality and cardiac transplantation at days 22 and 455. At day 22, mortality was 20.6% with CyBorDComb, 23.5% with DCyBorSeq, and 0% with CyBorDSeq (p = 0.003). At day 455, mortality was not significantly different between regimens (p = 0.195). Acute toxicity of dexamethasone was evaluated on myocardial function using a rat model of isolated perfused heart. Administration of dexamethasone induced a decrease in left ventricular myocardium contractility and relaxation (p<0.05), supporting a potential negative inotropic effect of dexamethasone in AL-CA patients with severe cardiac involvement. Conclusion Delaying dexamethasone during the first chemotherapy cycle reduces the number of early deaths without extending survival. It is clear that dexamethasone is beneficial in the long-term treatment of patients with AL-CA. However, the initial introduction of dexamethasone during treatment is critical, but may be associated with early cardiac deaths in severe CA. Thus, it is important to consider the dosage and timing of dexamethasone introduction on a patient-severity basis. The impact of dexamethasone in the treatment of AL-CA needs further investigation.
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Affiliation(s)
- Mélanie Bézard
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
- * E-mail:
| | - Silvia Oghina
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Damien Vitiello
- Sport and Health Sciences Institute (I3SP–EA3625), Paris University, Paris, France
- Sorbonne University, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Adaptation biologique et vieillissement, Paris, France
| | - Mounira Kharoubi
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Ekaterini Kordeli
- Sorbonne University, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Adaptation biologique et vieillissement, Paris, France
| | - Arnault Galat
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Amira Zaroui
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Soulef Guendouz
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Floriane Gilles
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | | | - David Hamon
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Vincent Audard
- Nephrology and Transplantation Department, Rare Disease Reference Center «Syndrome Néphrotique Idiopathique», Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Emmanuel Teiger
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
- Université Paris Est Créteil (UPEC), Institut National de la Santé et de la Recherche Médicale (INSERM) U955, Institut Mondor de Recherche Biomédicale (IMRB), Créteil, France
| | - Elsa Poullot
- Université Paris Est Créteil (UPEC), Institut National de la Santé et de la Recherche Médicale (INSERM) U955, Institut Mondor de Recherche Biomédicale (IMRB), Créteil, France
- Anatomy and Cytopathology, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Valérie Molinier-Frenkel
- Université Paris Est Créteil (UPEC), Institut National de la Santé et de la Recherche Médicale (INSERM) U955, Institut Mondor de Recherche Biomédicale (IMRB), Créteil, France
- Immunology Laboratory, Créteil, France
| | - François Lemonnier
- Hematopathology-Lymphoid Unit, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Onnik Agbulut
- Sorbonne University, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Adaptation biologique et vieillissement, Paris, France
| | - Fabien Le Bras
- Hematopathology-Lymphoid Unit, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
| | - Thibaud Damy
- The French Cardiac Amyloidosis Reference Center, GRC Amyloid Research Institute, Réseau amylose Mondor, and DHU A-TVB, Créteil, France
- Cardiology Department, Assistance Publique des Hôpitaux de Paris, University Hospital Henri Mondor, Créteil, France
- Université Paris Est Créteil (UPEC), Institut National de la Santé et de la Recherche Médicale (INSERM) U955, Institut Mondor de Recherche Biomédicale (IMRB), Créteil, France
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Abstract
Amyloidosis constitutes a large spectrum of diseases characterized by an extracellular deposition of a fibrillar aggregate, generating insoluble and toxic amasses that may be deposited in tissues in bundles with an abnormal cross-β-sheet conformation, known as amyloid. Amyloid may lead to a cell damage and an impairment of organ function. Several different proteins are recognized as able to produce amyloid fibrils with a different tissue tropism related to the molecular structure. The deposition of amyloid may occur as a consequence of the presence of an abnormal protein, caused by high plasma levels of a normal protein, or as a result of the aging process along with some environmental factors. Although amyloidosis is rare, amyloid deposits play a role in several conditions as degenerative diseases. Thus, the development of antiamyloid curative treatments may be a rational approach to treat neurodegenerative conditions like Alzheimer's disease in the future. Nowadays, novel treatment options are currently refined through controlled trials, as new drug targets and different therapeutic approaches have been identified and validated through modern advances in basic research. Fibril formation stabilizers, proteasome inhibitors, and immunotherapy revealed promising results in improving the outcomes of patients with systemic amyloidosis, and these novel algorithms will be effectively combined with current treatments based on chemotherapeutic regimens. The aim of this review is to provide an update on diagnosis and treatment for systemic amyloidosis.
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Abstract
Diagnoses of amyloidosis are increasing annually, and advances in bone scintigraphy and cardiac MRI accompanied by development of nonbiopsy diagnostic criteria have specifically led to a huge increase in transthyretin amyloidosis cardiomyopathy (ATTR-CM) diagnoses worldwide. Tafamidis use is increasing, and there are several ongoing phase III clinical trials of novel agents that promise to transform the treatment landscape for patients with ATTR-CM. In systemic light chain (AL) amyloidosis, more effective chemotherapeutic agents continue to improve patient outcomes. Accelerating the removal of amyloid deposits to accompany these therapies remains the holy grail. However, in the meantime, early diagnosis is undoubtedly key in improving patient outcomes.
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Affiliation(s)
- Steven Law
- Division of Medicine (Royal Free Campus), National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, University College London, Rowland Hill Street, London NW3 2PF, UK
| | - Marianna Fontana
- Division of Medicine (Royal Free Campus), National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, University College London, Rowland Hill Street, London NW3 2PF, UK
| | - Julian D Gillmore
- Division of Medicine (Royal Free Campus), National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, University College London, Rowland Hill Street, London NW3 2PF, UK.
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40
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Beer J, Bittar J, Hedberg ML, Seykora JT. Violaceous truncal plaques consistent with amyloid light-chain amyloidosis. J Cutan Pathol 2021; 49:889-892. [PMID: 34263931 DOI: 10.1111/cup.14086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 03/19/2021] [Accepted: 04/24/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Jacob Beer
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Julie Bittar
- Department of Dermatology, Rush University Medical Center, Chicago, Illinois, USA
| | - Matthew L Hedberg
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John T Seykora
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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41
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Wu B, Pak DM, Smith KD, Shinohara MM. Utility of abdominal skin punch biopsy for detecting systemic amyloidosis. J Cutan Pathol 2021; 48:1342-1346. [PMID: 34075607 DOI: 10.1111/cup.14070] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/26/2021] [Accepted: 05/30/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Early and accurate diagnosis of systemic amyloidosis (SA) is critical for optimal patient outcomes. Biopsy of clinically uninvolved skin and subcutaneous tissue including abdominal skin punch biopsy (ASPB) is often used as a surrogate for affected organ sampling. There is a lack of published data on the sensitivity and specificity of ASPB for diagnosing SA. METHODS Retrospective chart review between 2000 and 2020 of all ASPB was performed to diagnose SA. Amyloid deposition was confirmed by Congo red stain. Study group includes patients with histopathologically and clinically confirmed diagnosis of SA. Control group includes patients without histopathology of amyloid deposition and no clinical SA. RESULTS Forty-one patients meeting inclusion criteria were analyzed; 23 study group and 18 control group patients. The overall diagnostic sensitivity of ASPB was 43% (95% CI 23%-66%) and the specificity 100% (95% CI 81%-100%). The AL amyloidosis diagnostic sensitivity was 64% (95% CI 35%-87%). ASPB >10 mm in depth had 100% (95% CI 54%-100%) sensitivity compared to 24% for depth ≤10 mm (P = .002). CONCLUSIONS ASPB is a minimally invasive and highly specific method of diagnosing SA. It is particularly sensitive for diagnosing AL amyloidosis and the diagnostic sensitivity can be significantly improved with adequate biopsy depth and diameter.
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Affiliation(s)
- Bicong Wu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Daniel M Pak
- School of Medicine, University of Washington, Seattle, Washington, USA
| | - Kelly D Smith
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Michi M Shinohara
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA.,Division of Dermatology, University of Washington, Seattle, Washington, USA
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42
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Thanh Nguyen H, Thi Hong Nguyen C. A rare case report with diffuse 'sclerodermoid appearance' due to systemic amyloidosis. Australas J Dermatol 2021; 62:e458-e460. [PMID: 34033119 DOI: 10.1111/ajd.13618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 04/11/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Huan Thanh Nguyen
- Department of Geriatrics and Gerontology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Department of Cardiology, Thong Nhat Hospital, Ho Chi Minh City, Vietnam
| | - Chuyen Thi Hong Nguyen
- Department of Dermatology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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43
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Lee AYS, Bayly A, Lin MW. Evaluation of Polarized Light and Fluorescence Microscopy of Congo Red Stain in the Diagnosis of Renal Amyloidosis. Lab Med 2021; 52:574-577. [PMID: 33929031 DOI: 10.1093/labmed/lmab022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Amyloidosis is a devastating multisystemic disease resulting from organ deposition of misfolded proteins and subsequent organ dysfunction. An accurate diagnosis relies frequently on biopsies and microscopy techniques to detect amyloid deposition. We evaluated the diagnostic performance of Congo red staining using polarized light (PM) and fluorescence microscopy (FM) techniques in renal amyloidosis. METHODS We performed a retrospective and prospective analysis of all renal biopsies submitted at a large quarternary hospital in Sydney, Australia, that had undergone PM and FM evaluation using Congo red staining. Identification of amyloid fibrils on electron microscopy was considered the reference method. RESULTS PM and FM displayed very high sensitivity and specificity in correctly identifying amyloid deposits in renal biopsies that tested positive via Congo red staining. Comparison of the diagnostic statistics revealed that they are diagnostically equivalent. CONCLUSION In the diagnosis of renal amyloidosis on biopsy, evaluation of Congo red staining may be reliably performed via PM or FM.
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Affiliation(s)
- Adrian Y S Lee
- ICPMR and NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia.,Sydney Medical School, The University of Sydney, Westmead, NSW, Australia
| | - Angela Bayly
- ICPMR and NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia
| | - Ming-Wei Lin
- ICPMR and NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia.,Sydney Medical School, The University of Sydney, Westmead, NSW, Australia
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44
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Gibier JB, Perbet R, Lopez B, Colombat M, Dubois R, Humez S, Terriou L, Copin MC, Gnemmi V. Paraffin Immunofluorescence Increases Light-Chain Detection in Extra-Renal Light Chain Amyloidosis and Other Light-Chain-Associated Diseases. Arch Pathol Lab Med 2021; 145:352-358. [PMID: 32539437 DOI: 10.5858/arpa.2020-0018-oa] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2020] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Distinguishing the different types of amyloid is clinically important because treatments and outcomes are different. Mass spectrometry is the new gold standard for amyloid typing, but it is costly and not widely available. Therefore, immunolabeling remains the first step in identifying the most common types of amyloidosis. In amyloid subtyping, direct immunofluorescence works well when applied to frozen sections, but immunohistochemistry on formalin-fixed, paraffin-embedded material often yields poor results, particularly for light chain amyloidosis. Recently, paraffin immunofluorescence has been described as a valuable salvage technique in renal pathology when frozen sections are not available but it has not been evaluated for extra-renal diseases. OBJECTIVES.— To evaluate the use of paraffin immunofluorescence for light-chain detection in extra-renal amyloidosis and other light-chain-associated diseases. DESIGN.— First, we compared the staining intensity of both light chains between paraffin immunofluorescence and immunohistochemistry on a retrospective cohort of 28 cases of amyloidosis that have been previously typed. Then, we studied the role of paraffin immunofluorescence as an addition to our classical immunohistochemistry panel for amyloidosis typing. RESULTS.— In the retrospective cohort, we found that paraffin immunofluorescence outperformed immunohistochemistry for light-chain detection. Then, in the prospective part of the study, we showed that the proportion of correctly classified cases increased from 50% to 71.9% with the adjunction of second-intention paraffin immunofluorescence to the immunohistochemistry procedure. CONCLUSIONS.— We therefore view paraffin immunofluorescence as a significant addition to the routine workflow for detection of light-chain-related diseases.
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Affiliation(s)
- Jean-Baptiste Gibier
- From the Université de Lille, CNRS, Inserm, CHU Lille, Pathology Department, Centre de Biologie Pathologie, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000 Lille, France (Gibier, Gnemmi)
| | - Romain Perbet
- Université de Lille, CHU Lille, Pathology Department, Centre de Biologie Pathologie, F-59000 Lille, France (Perbet, Dubois, Humez, Copin)
| | - Benjamin Lopez
- Laboratoire de Biologie Médicale, Centre Hospitalier de Dunkerque, Dunkerque, France (Lopez)
| | - Magali Colombat
- Institut Universitaire du Cancer (IUCT), CHU de Toulouse, Pathology Department, Toulouse, France (Colombat)
| | - Romain Dubois
- Université de Lille, CHU Lille, Pathology Department, Centre de Biologie Pathologie, F-59000 Lille, France (Perbet, Dubois, Humez, Copin)
| | - Sarah Humez
- Université de Lille, CHU Lille, Pathology Department, Centre de Biologie Pathologie, F-59000 Lille, France (Perbet, Dubois, Humez, Copin)
| | - Louis Terriou
- Université de Lille, Hematology Department, Hôpital Claude Huriez, CHU Lille, F-59000, Lille, France (Terriou)
| | - Marie-Christine Copin
- Université de Lille, CHU Lille, Pathology Department, Centre de Biologie Pathologie, F-59000 Lille, France (Perbet, Dubois, Humez, Copin)
| | - Viviane Gnemmi
- From the Université de Lille, CNRS, Inserm, CHU Lille, Pathology Department, Centre de Biologie Pathologie, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000 Lille, France (Gibier, Gnemmi)
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45
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Lin XY, Pan D, Sang LX, Chang B. Primary localized gastric amyloidosis: A scoping review of the literature from clinical presentations to prognosis. World J Gastroenterol 2021; 27:1132-1148. [PMID: 33828390 PMCID: PMC8006099 DOI: 10.3748/wjg.v27.i12.1132] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/10/2021] [Accepted: 02/25/2021] [Indexed: 02/06/2023] Open
Abstract
Localized gastric amyloidosis (LGA) is a rare disease characterized by abnormal extracellular deposition of amyloid protein restricted to the stomach and it is confirmed by positive results of Congo red staining. Over decades, only a few cases have been reported and studies or research focusing on it are few. Although LGA has a low incidence, patients may suffer a lot from it and require proper diagnosis and management. However, the pathology of LGA remains unknown and no overall review of LGA from its presentations to its prognosis has been published. Patients with LGA are often asymptomatic or manifest atypical symptoms, making it difficult to differentiate from other gastrointestinal diseases. Here, we report the case of a 70-year-old woman with LGA and provide an overview of case reports of LGA available to us. Based on that, we conclude current concepts of clinical manifestations, diagnosis, treatment, and prognosis of LGA, aiming at providing a detailed diagnostic procedure for clinicians and promoting the guidelines of LGA. In addition, a few advanced technologies applied in amyloidosis are also discussed in this review, aiming at providing clinicians with a reference of diagnostic process. With this review, we hope to raise awareness of LGA among the public and clinicians.
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Affiliation(s)
- Xin-Yu Lin
- Department of Neurology, The First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Dan Pan
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Li-Xuan Sang
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Bing Chang
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
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46
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Agarwal A, Paul Wilson B, Kuruvilla Mathews P, Viggeswarpu S, Kango Gopal G. Amyloid cranial polyneuropathy: A rare neurological presentation of immunoglobulin light-chain amyloidosis. Aging Med (Milton) 2021; 4:61-65. [PMID: 33738383 PMCID: PMC7954838 DOI: 10.1002/agm2.12148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 12/19/2022] Open
Abstract
Amyloidosis, a disease with extracellular tissue deposition of fibrils, results in clinical manifestations based on deposition of these fibrils in multiple organ systems. Usual manifestations include nephrotic-range proteinuria, cardiac failure, hepatosplenomegaly, and skin manifestations. Common neurological manifestations include peripheral and autonomic neuropathies. Cranial neuropathy has been seldom reported and is an unusual clinical feature of amyloidosis. Here, we report an older man who presented with cranial nerve palsies along with other clinical features, including heart failure, proteinuria, weight loss, anorexia and distal symmetric polyneuropathy and was diagnosed with immunoglobulin light-chain (AL) amyloidosis.
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Affiliation(s)
- Abhinav Agarwal
- Department of Internal MedicineChristian Medical College and Hospital VelloreVelloreIndia
| | - Benny Paul Wilson
- Department of GeriatricsChristian Medical College and Hospital VelloreVelloreIndia
| | | | - Surekha Viggeswarpu
- Department of GeriatricsChristian Medical College and Hospital VelloreVelloreIndia
| | - Gopinath Kango Gopal
- Department of GeriatricsChristian Medical College and Hospital VelloreVelloreIndia
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47
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Santarelli MF, Genovesi D, Positano V, Scipioni M, Vergaro G, Favilli B, Giorgetti A, Emdin M, Landini L, Marzullo P. Deep-learning-based cardiac amyloidosis classification from early acquired pet images. Int J Cardiovasc Imaging 2021; 37:2327-2335. [PMID: 33591476 DOI: 10.1007/s10554-021-02190-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 02/08/2021] [Indexed: 11/24/2022]
Abstract
The objective of the present work was to evaluate the potential of deep learning tools for characterizing the presence of cardiac amyloidosis from early acquired PET images, i.e. 15 min after [18F]-Florbetaben tracer injection. 47 subjects were included in the study: 13 patients with transthyretin-related amyloidosis cardiac amyloidosis (ATTR-CA), 15 patients with immunoglobulin light-chain amyloidosis (AL-CA), and 19 control-patients (CTRL). [18F]-Florbetaben PET/CT images were acquired in list mode and data was sorted into a sinogram, covering a time interval of 5 min starting 15 min after the injection. The resulting sinogram was reconstructed using OSEM iterative algorithm. A deep convolutional neural network (CAclassNet) was designed and implemented, consisting of five 2D convolutional layers, three fully connected layers and a final classifier returning AL, ATTR and CTRL scores. A total of 1107 2D images (375 from AL-subtype patients, 312 from ATTR-subtype, and 420 from Controls) have been considered in the study and used to train, validate and test the proposed network. CAclassNet cross-validation resulted with train error mean ± sd of 2.001% ± 0.96%, validation error of 4.5% ± 2.26%, and net accuracy of 95.49% ± 2.26%. Network test error resulted in a mean ± sd values of 10.73% ± 0.76%. Sensitivity, specificity, and accuracy evaluated on the test dataset were respectively for AL-CA sub-type: 1, 0.912, 0.936; for ATTR-CA: 0.935, 0.897, 0.972; for control subjects: 0.809, 0.971, 0.909. In conclusion, the proposed CAclassNet model seems very promising as an aid for the clinician in the diagnosis of CA from cardiac [18F]-Florbetaben PET images acquired a few minutes after the injection.
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Affiliation(s)
| | | | | | - Michele Scipioni
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | | | | | | | - Michele Emdin
- Scuola Universitaria Superiore 'S. Anna", Pisa, Italy
| | - Luigi Landini
- Dipartimento di Ingegneria Dell'Informazione: DII, Pisa University, Pisa, Italy
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48
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Mira C, Montalvão P, Fonseca I, Borges A. Localised laryngotracheal amyloidosis: a differential diagnosis not to forget. BMJ Case Rep 2021; 14:e237954. [PMID: 33526525 PMCID: PMC7853032 DOI: 10.1136/bcr-2020-237954] [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] [Accepted: 12/13/2020] [Indexed: 02/03/2023] Open
Abstract
We present a case of multifocal laryngotracheal amyloidosis (LTA) in a 43-year-old man with persistent and progressive dysphonia and dyspnoea, and a first inconclusive histology. Although laryngeal amyloidosis accounts for fewer than 1% of all benign laryngeal tumours, it is in fact the most common site of amyloid deposition in the head, neck and respiratory tract. The clinical scenario is non-specific and diagnosis depends on a high degree of suspicion and on histology. Imaging is useful in mapping lesions, which are often more extensive than they appear during laryngoscopy. Despite being a benign entity, the prognosis is variable with a high-rate and long-latency recurrences, requiring long-term follow-up.
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Affiliation(s)
- Catarina Mira
- Radiology Department, Hospital Beatriz Angelo, Loures, Portugal
| | - Pedro Montalvão
- Otorhinolaryngology Deparment, Portuguese Institute of Oncology of Lisbon, Francisco Gentil, Lisbon, Portugal
| | - Isabel Fonseca
- Pathology, Portuguese Institute of Oncology of Lisbon, Francisco Gentil, Lisboa, Portugal
| | - Alexandra Borges
- Radiology Department, Portuguese Institute of Oncology of Lisbon, Francisco Gentil, Lisboa, Portugal
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49
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Zhang Y, Xiao Y, Liu Y, Fang Q, Tian Z, Li J, Zhou D, Xie Z, Dong R, Zhang S. Prognostic Value of Circulating sST2 for the Prediction of Mortality in Patients With Cardiac Light-Chain Amyloidosis. Front Cardiovasc Med 2021; 7:597472. [PMID: 33553254 PMCID: PMC7855859 DOI: 10.3389/fcvm.2020.597472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023] Open
Abstract
Aims: Systemic light-chain (AL) amyloidosis is a multisystemic disorder leading to multiple organ dysfunction and mortality that is often caused by cardiac involvement. Soluble suppression of tumorigenicity 2 (sST2) is a novel biomarker identified for risk stratification of heart disease. The aim of this study was to investigate the value of circulating sST2 levels in prognosis and mortality risk assessments for the AL amyloidosis population. Methods and Results: A total of 56 patients diagnosed with AL amyloidosis were enrolled in Peking Union Medical College Hospital (PUMCH) from January 2015 to May 2018. The relationships between the clinical parameters and overall survival (OS) and risk factors for disease progression were assessed. Additionally, receiver operating characteristic (ROC) curves, Kaplan–Meier analysis, and Cox hazard models were performed to explore the predictive value of sST2 in mortality rates. We found that the median OS of all patients was 7.3 [interquartile range (IQR) 4.4, 15.9] months. The median baseline sST2 level was 12.2 (IQR 5.1, 31.1) ng/ml, and the sST2 high group had more severe patients with a higher Mayo stage. In the ROC analysis, the area under the curve (AUC) was 0.728 [95% confidence interval (CI) 0.603–0.853] for sST2 to predict the outcomes of AL amyloidosis patients, and the optimal cutoff value was 12.34 ng/ml (sensitivity 80.2%, specificity 61.1%). Moreover, in multivariate Cox proportional hazards regression analysis, sST2 acted as an independent predictor of poor functional outcome in patients with AL amyloidosis. Conclusion: In AL amyloidosis patients, sST2 was a strong and independent prognostic biomarker for all-cause mortality, providing complementary prognostic information of a novel scoring system for risk stratification.
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Affiliation(s)
- Yang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ying Xiao
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yongtai Liu
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Quan Fang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhuang Tian
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jian Li
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Daobin Zhou
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhongpeng Xie
- Department of Pathology, Hainan General Hospital, Haikou, China
| | - Ruijia Dong
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuyang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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50
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Dahiya DS, Kichloo A, Singh J, Albosta M, Wani F. Gastrointestinal amyloidosis: A focused review. World J Gastrointest Endosc 2021; 13:1-12. [PMID: 33520102 PMCID: PMC7809597 DOI: 10.4253/wjge.v13.i1.1] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/16/2020] [Accepted: 12/28/2020] [Indexed: 02/06/2023] Open
Abstract
Amyloidosis, a heterogenous group of disorders, is characterized by the extracellular deposition of autologous, insoluble, fibrillar misfolded proteins. These extracellular proteins deposit in tissues aggregated in ß-pleated sheets arranged in an antiparallel fashion and cause distortion to the tissue architecture and function. In the current literature, about 60 heterogeneous amyloidogenic proteins have been identified, out of which 27 have been associated with human disease. Classified as a rare disease, amyloidosis is known to have a wide range of possible etiologies and clinical manifestations. The exact incidence and prevalence of the disease is currently unknown. In both systemic and localized amyloidosis, there is infiltration of the abnormal proteins in the layers of the gastrointestinal (GI) tract or the liver parenchyma. The gold standard test for establishing a diagnosis is tissue biopsy followed by Congo Red staining and apple-green birefringence of the Congo Red-stained deposits under polarized light. However, not all patients may have a positive tissue confirmation of the disease. In these cases additional workup and referral to a gastroenterologist may be warranted. Along with symptomatic management, the treatment for GI amyloidosis consists of observation or localized surgical excision in patients with localized disease, and treatment of the underlying pathology in cases of systemic amyloidosis. In this review of the literature, we describe the subtypes of amyloidosis, with a primary focus on the epidemiology, pathogenesis, clinical features, diagnosis and treatment strategies available for GI amyloidosis.
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Affiliation(s)
| | - Asim Kichloo
- Internal Medicine, Central Michigan University, Saginaw, MI 48603, United States
- Internal Medicine, Samaritan Medical Center, Watertown, NY 13601, United States
| | - Jagmeet Singh
- Internal Medicine, Guthrie Robert Packer Hospital, Sayre, PA 18840, United States
| | - Michael Albosta
- Internal Medicine, Central Michigan University, Saginaw, MI 48603, United States
| | - Farah Wani
- Family Medicine, Samaritan Medical Center, Watertown, NY 13601, United States
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