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Tomkins O, Lunn MP. Recent insights into haematology and peripheral nerve disease. Curr Opin Neurol 2024:00019052-990000000-00171. [PMID: 38861221 DOI: 10.1097/wco.0000000000001291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
PURPOSE OF REVIEW The association between clonal haematological disorders and peripheral nerve disease is recognized. Paraproteinaemic phenomena are the most common mechanism, but direct neural lymphomatous infiltration is seen and can be challenging to diagnose. Traditional and novel anticancer therapies have neuropathic side effects. RECENT FINDINGS Novel studies using sensitive techniques are refining the incidence of peripheral neuropathy in patients with a monoclonal gammopathy, and the pathogenesis of IgM Peripheral neuropathy (PN) and POEMS syndrome. Recent series give insight into the characteristics and diagnostic challenges of patients with neurolymphomatosis and amyloid light chain amyloidosis. There is an increasing repertoire of effective anticancer drugs in haematological oncology, but chemotherapy-related neuropathy remains a common side effect. SUMMARY This review of the current literature focuses on recent updates and developments for the paraproteinaemic neuropathies, and the evaluation, diagnosis and treatment of peripheral nerve disease due to high-grade and low-grade lymphomas and lymphoproliferative disorders.
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Affiliation(s)
- Oliver Tomkins
- Department of Haematology, University College London Hospitals NHS Foundation Trust
| | - Michael P Lunn
- Centre for Neuromuscular Diseases, National Hospital for Neurology and Neurosurgery, London, UK
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2
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Mohamed AA, Caussat T, Mouhawasse E, Ali R, Johansen PM, Lucke-Wold B. Neurosurgical Intervention for Nerve and Muscle Biopsies. Diagnostics (Basel) 2024; 14:1169. [PMID: 38893695 PMCID: PMC11172125 DOI: 10.3390/diagnostics14111169] [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: 04/03/2024] [Revised: 05/21/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
(1) Background: Neurologic and musculoskeletal diseases represent a considerable portion of the underlying etiologies responsible for the widely prevalent symptoms of pain, weakness, numbness, and paresthesia. Because of the subjective and often nonspecific nature of these symptoms, different diagnostic modalities have been explored and utilized. (2) Methods: Literature review. (3) Results: Nerve and muscle biopsy remains the gold standard for diagnosing many of the responsible neurological and musculoskeletal conditions. However, the need for invasive tissue sampling is diminishing as more investigations explore alternative diagnostic modalities. Because of this, it is important to explore the current role of neurosurgical intervention for nerve and muscle biopsies and its current relevance in the diagnostic landscape of neurological and musculoskeletal disorders. With consideration of the role of nerve and muscle biopsy, it is also important to explore innovations and emerging techniques for conducting these procedures. This review explores the indications and emerging techniques for neurological intervention for nerve and muscle biopsies. (4) Conclusions: The role of neurosurgical intervention for nerve and muscle biopsy remains relevant in diagnosing many neurological and musculoskeletal disorders. Biopsy is especially relevant as a supportive point of evidence for diagnosis in atypical cases. Additionally, emerging techniques have been explored to guide diagnostics and biopsy, conduct less invasive biopsies, and reduce risks of worsening neurologic function and other symptoms secondary to biopsy.
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Affiliation(s)
- Ali A. Mohamed
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33431, USA
| | - Thomas Caussat
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33431, USA
| | - Edwin Mouhawasse
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33431, USA
| | - Rifa Ali
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Phillip M. Johansen
- Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL 33613, USA
| | - Brandon Lucke-Wold
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA
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3
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Grunenberg A, Buske C. How to manage waldenström's macroglobulinemia in 2024. Cancer Treat Rev 2024; 125:102715. [PMID: 38471356 DOI: 10.1016/j.ctrv.2024.102715] [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: 01/30/2024] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024]
Abstract
Clinical management of Waldenström's Macroglobulinemia has seen major progress in the recent years, triggered by our improved understanding of the biology of the disease and the development of new therapies. Based on this there are multiple treatment options available for patients with WM ranging from classical immunochemotherapy to targeted approaches blocking key enzymes involved in lymphoma growth. This review summarizes our current knowledge about diagnostics and treatment of this rare but recurrent lymphoma subtype, which often presents a major clinical challenge in daily clinical life.
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Affiliation(s)
| | - Christian Buske
- Department of Internal Medicine III, University Hospital Ulm, Germany; Institute of Experimental Cancer Research, University Hospital, Germany.
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4
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Bellanti R, Keddie S, Lunn MP, Rinaldi S. Ultrasensitive assay technology and fluid biomarkers for the evaluation of peripheral nerve disease. J Neurol Neurosurg Psychiatry 2024; 95:114-124. [PMID: 37821222 DOI: 10.1136/jnnp-2023-332031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/22/2023] [Indexed: 10/13/2023]
Abstract
The field of biomarker discovery is rapidly expanding. The introduction of ultrasensitive immunoassays and the growing precision of genetic technologies are poised to revolutionise the assessment and monitoring of many diseases. Given the difficulties in imaging and tissue diagnosis, there is mounting interest in serum and cerebrospinal fluid biomarkers of peripheral neuropathy. Realised and potential fluid biomarkers of peripheral nerve disease include neuronal biomarkers of axonal degeneration, glial biomarkers for peripheral demyelinating disorders, immunopathogenic biomarkers (such as the presence and titre of antibodies or the levels of cytokines) and genetic biomarkers. Several are already starting to inform clinical practice, whereas others remain under evaluation as potential indicators of disease activity and treatment response. As more biomarkers become available for clinical use, it has become increasingly difficult for clinicians and researchers to keep up-to-date with the most recent discovery and interpretation. In this review, we aim to inform practising neurologists, neuroscientists and other clinicians about recent advances in fluid biomarker technology, with a focus on single molecule arrays (Simoa), chemiluminescent enzyme immunoassays (CLEIA), electrochemiluminescence (ECL), proximity extension assays (PEA), and microfluidic technology. We discuss established and emerging fluid biomarkers of peripheral neuropathy, their clinical applications, limitations and potential future developments.
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Affiliation(s)
- Roberto Bellanti
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London, UK
| | - Stephen Keddie
- Department of Neuromuscular Diseases, The Royal London Hospital, London, UK
| | - Michael P Lunn
- Department of Neuromuscular Diseases, Queen Square Institute of Neurology, University College London, London, UK
- Department of Neuroinflammation, National Hospital for Neurology and Neurosurgery, London, UK
| | - Simon Rinaldi
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
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5
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Hatasa M, Imoto N, Komori S, Nosaki Y, Kurahashi S. Waldenström Macroglobulinemia-Associated Peripheral Neuropathy in the Brachial Plexus With Bing-Neel Syndrome Diagnosed Through Repeated Cerebrospinal Tests. Cureus 2024; 16:e52400. [PMID: 38361676 PMCID: PMC10869174 DOI: 10.7759/cureus.52400] [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] [Accepted: 01/15/2024] [Indexed: 02/17/2024] Open
Abstract
In Waldenström macroglobulinemia (WM), confirming the presence of Bing-Neel syndrome (BNS) is important because drugs that penetrate the central nervous system (CNS) must be selected. We report the case of a 75-year-old man for whom tirabrutinib, a second-generation Bruton's tyrosine kinase inhibitor (BTKi), was useful in treating WM-associated peripheral neuropathy (PN) with BNS. Numbness and muscle weakness in the fingers occurred three years after the initial treatment of WM. WM-associated PN due to demyelinating disease was diagnosed based on the results of a nerve conduction study and magnetic resonance imaging showing bilateral symmetric swelling of the brachial plexus. The cerebrospinal fluid (CSF) cytology results were initially negative; however, the CSF test was repeated because of extremely high protein levels (984 mg/dL) and slightly elevated leukocyte counts (14/µL). The second test revealed abnormal lymphoplasmacytic cells (189/µL), indicating BNS. Rituximab and high-dose methotrexate-containing chemotherapy were administered. Despite the subsequent negative CSF cytology results, his neurological symptoms persisted but subsided soon after the initiation of tirabrutinib. The therapeutic effects of tirabrutinib persisted for 25 months. This case suggested that a careful search for concurrent BNS is important when lesions are close to the CNS or when atypical CSF findings are obtained in patients with WM-associated PN, especially when BTKi options are available.
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Affiliation(s)
- Misaki Hatasa
- Department of Postgraduate Clinical Training Center, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Naoto Imoto
- Department of Hematology and Oncology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Shota Komori
- Department of Neurology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Yasunobu Nosaki
- Department of Neurology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Shingo Kurahashi
- Department of Hematology and Oncology, Toyohashi Municipal Hospital, Toyohashi, JPN
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6
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Khwaja J, Vos JMI, Pluimers TE, Japzon N, Patel A, Salter S, Kwakernaak AJ, Gupta R, Rismani A, Kyriakou C, Wechalekar AD, D'Sa S. Clinical and clonal characteristics of monoclonal immunoglobulin M-associated type I cryoglobulinaemia. Br J Haematol 2024; 204:177-185. [PMID: 37726004 DOI: 10.1111/bjh.19112] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/30/2023] [Accepted: 09/07/2023] [Indexed: 09/21/2023]
Abstract
Monoclonal immunoglobulin M-associated type I cryoglobulinaemia is poorly characterised. We screened 534 patients with monoclonal IgM disorders over a 9-year period and identified 134 patients with IgM type I cryoglobulins. Of these, 76% had Waldenström macroglobulinaemia (WM), 5% had other non-Hodgkin lymphoma (NHL) and 19% had IgM monoclonal gammopathy of undetermined significance (MGUS). Clinically relevant IgM-associated disorders (including cold agglutinin disease [CAD], anti-MAG antibodies, amyloidosis and Schnitzler syndrome) coexisted in 31%, more frequently in MGUS versus WM/NHL (72% vs. 22%/29%, p < 0.001). The majority of those with cryoglobulins and coexistent CAD/syndrome had the molecular characteristics of a CAD clone (wild-type MYD88 in 80%). A half of all patients had active manifestations at cryoglobulin detection: vasomotor (22%), cutaneous (16%), peripheral neuropathy (22%) and hyperviscosity (9%). 16/134 required treatment for cryoglobulin-related symptoms alone at a median of 38 days (range: 6-239) from cryoglobulin detection. At a median follow-up of 3 years (range: 0-10), 3-year cryoglobulinaemia-treatment-free survival was 77% (95% CI: 68%-84%). Age was the only predictor of overall survival. Predictors of cryoglobulinaemia-related treatment/death were hyperviscosity (HR: 73.01; 95% CI: 15.62-341.36, p < 0.0001) and cutaneous involvement (HR: 2.95; 95% CI: 1.13-7.71, p = 0.028). Type I IgM cryoglobulinaemia is more prevalent than previously described in IgM gammopathy and should be actively sought.
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Affiliation(s)
- Jahanzaib Khwaja
- Department of Haematology, University College London Hospital, London, UK
| | - Josephine M I Vos
- Department of Haematology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Tessa E Pluimers
- Department of Haematology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Nicole Japzon
- Department of Haematology, University College London Hospital, London, UK
| | - Aisha Patel
- Department of Haematology, University College London Hospital, London, UK
| | | | - Arjan J Kwakernaak
- Department of Internal Medicine, Clinical Immunology/Allergy and Nephrology Amsterdam UMC, Amsterdam, The Netherlands
| | - Rajeev Gupta
- Department of Haematology, University College London Hospital, London, UK
| | - Ali Rismani
- Department of Haematology, University College London Hospital, London, UK
| | | | | | - Shirley D'Sa
- Department of Haematology, University College London Hospital, London, UK
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7
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Danesin N, Lo Schirico M, Scapinello G, Grassi A, Riva M, Berno T, Branca A, Visentin A, Carraro M, Pavan L, Manni S, Bonaldi L, Martines A, Bertorelle R, Vianello F, Gurrieri C, Briani C, Zambello R, Trentin L, Piazza F. Waldenström Macroglobulinemia in Very Elderly (≥75-year-old) Patients: A 33-year-retrospective Cohort Study in an Italian University Hospital. Hemasphere 2023; 7:e964. [PMID: 37799344 PMCID: PMC10550041 DOI: 10.1097/hs9.0000000000000964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 08/25/2023] [Indexed: 10/07/2023] Open
Affiliation(s)
- Nicolò Danesin
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | | | - Greta Scapinello
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Angela Grassi
- Immunology and Molecular Oncology Diagnostic Unit, Veneto Institute of Oncology, IOV-IRCCS, Padova, Italy
| | - Marcello Riva
- San Bortolo Hospital, Hematology and Cell Therapy Division, Vicenza, Italy
| | - Tamara Berno
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Antonio Branca
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Andrea Visentin
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Marco Carraro
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Laura Pavan
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Sabrina Manni
- Hematology Unit, Department of Medicine, University of Padova, Italy
- Veneto Institute of Molecular Medicine, Fondazione per la Ricerca Biomedica Avanzata, Padova, Italy
| | - Laura Bonaldi
- Immunology and Molecular Oncology Diagnostic Unit, Veneto Institute of Oncology, IOV-IRCCS, Padova, Italy
| | - Annalisa Martines
- Immunology and Molecular Oncology Diagnostic Unit, Veneto Institute of Oncology, IOV-IRCCS, Padova, Italy
| | - Roberta Bertorelle
- Immunology and Molecular Oncology Diagnostic Unit, Veneto Institute of Oncology, IOV-IRCCS, Padova, Italy
| | - Fabrizio Vianello
- Hematology Unit, Department of Medicine, University of Padova, Italy
- Veneto Institute of Molecular Medicine, Fondazione per la Ricerca Biomedica Avanzata, Padova, Italy
| | - Carmela Gurrieri
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Chiara Briani
- Department of Neurosciences, University of Padova, Italy
| | - Renato Zambello
- Hematology Unit, Department of Medicine, University of Padova, Italy
- Veneto Institute of Molecular Medicine, Fondazione per la Ricerca Biomedica Avanzata, Padova, Italy
| | - Livio Trentin
- Hematology Unit, Department of Medicine, University of Padova, Italy
| | - Francesco Piazza
- Hematology Unit, Department of Medicine, University of Padova, Italy
- Veneto Institute of Molecular Medicine, Fondazione per la Ricerca Biomedica Avanzata, Padova, Italy
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8
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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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9
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Mauermann ML, Southerland AM. Hematologic Disorders and the Nervous System. Continuum (Minneap Minn) 2023; 29:826-847. [PMID: 37341332 DOI: 10.1212/con.0000000000001238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
OBJECTIVE This article discusses the epidemiology, diagnosis, treatment, and prevention of neurologic complications of red blood cell, platelet, and plasma cell disorders. LATEST DEVELOPMENTS Cerebrovascular complications can occur in patients with blood cell and platelet disorders. Treatment strategies to prevent stroke are available for patients with sickle cell disease, polycythemia vera, and essential thrombocythemia. A diagnosis of thrombotic thrombocytopenic purpura should be considered in patients with neurologic symptoms, hemolytic anemia, thrombocytopenia, mild renal insufficiency, and fever. Plasma cell disorders can be associated with peripheral neuropathy, and classification of the monoclonal protein type and neuropathy aid in diagnosis. Patients with POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal plasma cell disorder, and skin changes) syndrome can present with arterial and venous neurologic events. ESSENTIAL POINTS This article discusses the neurologic complications of blood cell disorders and the most recent advances in prevention and treatment.
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10
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Chen LY, Drayson M, Bunce C, Ramasamy K. Monoclonal gammopathy of increasing significance: time to screen? Haematologica 2023; 108:1476-1486. [PMID: 36373250 PMCID: PMC10233333 DOI: 10.3324/haematol.2022.281802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 10/28/2022] [Indexed: 11/11/2022] Open
Abstract
Monoclonal gammopathy (MG) is a frequently detected clonal B-cell or plasma-cell disorder. Importantly, every multiple myeloma (MM) case is preceded by MG. Although clinical algorithms now allow earlier treatment of patients with biomarkers of malignancy before MM-induced tissue damage (CRAB) occurs, most patients are still diagnosed late. It is important to revisit how MG should be managed in clinical practice and whether screening is required. As the prevalence of MG and other medical co-morbidities both rise with increasing age, the degree of contribution of MG to disease states other than malignant progression is often unclear. This can lead to monitoring lapses and under recognition of the organ dysfunction that can occur with monoclonal gammopathy of clinical significance (MGCS). Therefore, models of progression to MM and/or MGCS require further refinement. While MG is currently detected incidentally, a case for screening has been made with ongoing studies in this area. Screening has the potential benefit of earlier detection and prevention of both MGCS and delayed MM presentations, but important drawbacks include the psychosocial impact on individuals and resource burden on healthcare services. MG terminology should transition alongside our increasing understanding of the condition and genomic characterization that have already begun to revise the MG nomenclature. The biology of MG has been poorly understood and is often inferred from the biology of MM, which is unhelpful. We review the literature and case for MG screening in this paper. In particular, we highlight areas that require focus to establish screening for MG.
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Affiliation(s)
- Lucia Y Chen
- Oxford University Hospitals NHS Foundation Trust
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11
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First-Line Treatment of Waldenström’s Macroglobulinaemia: Considerations Based on the Dutch National Guideline. HEMATO 2022. [DOI: 10.3390/hemato3040047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Waldenström macroglobulinemia (WM) is a rare B-cell Non-Hodgkin Lymphoma. There are only few prospective randomized clinical trials to guide treatment recommendations and there is no international consensus on a preferred first line treatment approach. In the recently revised Dutch guideline for WM, we describe recommendations for practice based as much as possible on the known data. Here, we summarize the considerations for first-line treatment based on these Dutch guidelines. Available evidence is summarized, including efficacy and toxicity data. Combinations of Rituximab with chemotherapy, proteasome inhibition or BTK-inhibition are all valid first line treatment options. The Dutch WM working group considers Dexamethasone/Rituximab/Cylofosfamide (DRC) a suitable first-line treatment for many WM patients, given the efficacy, the relatively mild toxicity profile and the extensive experience with this regimen. However, the long-term toxicities of DRC are unclear and need further clarification. Other regimens such as R-bendamustine, R-Bortezomib-dexamethason are also effective options, however with specific toxicities. BTK-inhibitors are not a preferred option in first line for most patients in the Dutch WM guidelines because of the need for longterm treatment and toxicities. Based on patient preferences research, future clinical trials should focus on effective fixed-duration regimens with non-cytotoxic therapies that have a favorable toxicity profile. Further development of (combinations with) BCL-2 inhibititors, novel proteasome inhibitors and BTK-inhibition could be interesting. In addition T-cell-directed treatments including bispecific antibodies as a monotherapy or combined with other novel agents deserve further study in WM.
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12
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Polyneuropathy Associated with IgM Monoclonal Gammopathy; Advances in Genetics and Treatment, Focusing on Anti-MAG Antibodies. HEMATO 2022. [DOI: 10.3390/hemato3040045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
With increasing age, the chances of developing either MGUS or polyneuropathy increase as well. In some cases, there is a causative relationship between the IgM M-protein and polyneuropathy. In approximately half of these cases, IgM targets the myelin-associated glycoprotein (MAG). This results in chronic polyneuropathy with slowly progressive, predominantly sensory neurological deficits and distally demyelinating features in nerve conduction studies. Despite the disease being chronic and developing slowly, it can cause considerable impairment. We reviewed English medical publications between 1980 and May 2022 on IgM gammopathy-associated polyneuropathy, with special attention to studies addressing the pathophysiology or treatment of anti-MAG polyneuropathy. Treatment options have been limited to a temporizing effect of intravenous immunoglobulins in some patients and a more sustained effect of rituximab but in only 30 to 55 percent of patients. An increase in our knowledge concerning genetic mutations, particularly the MYD88L265P mutation, led to the development of novel targeted treatment options such as BTK inhibitors. Similarly, due to the increasing knowledge of the pathophysiology of anti-MAG polyneuropathy, new treatment options are emerging. Since anti-MAG polyneuropathy is a rare disease with diverse symptomatology, large trials with good outcome measures are a challenge.
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13
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Keh RYS, Shah S, Lilleker JB, Lavin T, Morrow J, Carr AS, Lunn MP. Pragmatic guide to peripheral nerve disease and the role of clinical biomarkers. Pract Neurol 2022; 22:pn-2022-003438. [PMID: 35850979 DOI: 10.1136/pn-2022-003438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2022] [Indexed: 11/03/2022]
Abstract
In clinical neurology practice, there are few sensitive, specific and responsive serological biomarkers reflecting pathological processes affecting the peripheral nervous system. Instead, we rely on surrogate multimodality biomarkers for diagnosis and management. Correct use and interpretation of the available tests is essential to ensure that appropriate treatments are used and adjusted in a timely fashion. The incorrect application or interpretation of biomarkers can result in misdiagnosis and delays in appropriate treatment. Here, we discuss the uses and limitations of such biomarkers and discuss possible future developments.
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Affiliation(s)
- Ryan Yann Shern Keh
- Centre for Neuromuscular Diseases, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
- Manchester Centre for Clinical Neurosciences, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester, UK
| | - Sachit Shah
- Lysholm Department of Neuroradiology, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
| | - James B Lilleker
- Manchester Centre for Clinical Neurosciences, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester, UK
- Division of Musculoskeletal and Dermatological, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Tim Lavin
- Manchester Centre for Clinical Neurosciences, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester, UK
| | - Jasper Morrow
- Centre for Neuromuscular Diseases, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
- Lysholm Department of Neuroradiology, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
| | - Aisling S Carr
- Centre for Neuromuscular Diseases, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
- Institute of Neurology, University College London, London, UK
| | - Michael P Lunn
- Centre for Neuromuscular Diseases, National Hospital of Neurology and Neurosurgery, Queen Square, University College London Hospitals NHS Foundation Trust, London, UK
- Institute of Neurology, University College London, London, UK
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14
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Girard LP, Soekojo CY, Ooi M, Chng WJ, de Mel S. Immunoglobulin M Monoclonal Gammopathies of Clinical Significance. Front Oncol 2022; 12:905484. [PMID: 35756635 PMCID: PMC9219578 DOI: 10.3389/fonc.2022.905484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 05/05/2022] [Indexed: 01/07/2023] Open
Abstract
Immunoglobulin M monoclonal gammopathy of undetermined significance (MGUS) comprises 15-20% of all cases of MGUS. IgM MGUS is distinct from other forms of MGUS in that the typical primary progression events include Waldenstrom macroglobulinaemia and light chain amyloidosis. Owing to its large pentameric structure, IgM molecules have high intrinsic viscosity and precipitate more readily than other immunoglobulin subtypes. They are also more commonly associated with autoimmune phenomena, resulting in unique clinical manifestations. Organ damage attributable to the paraprotein, not fulfilling criteria for a lymphoid or plasma cell malignancy has recently been termed monoclonal gammopathy of clinical significance (MGCS) and encompasses an important family of disorders for which diagnostic and treatment algorithms are evolving. IgM related MGCS include unique entities such as cold haemagglutinin disease, IgM related neuropathies, renal manifestations and Schnitzler's syndrome. The diagnostic approach to, and management of these disorders differs significantly from other categories of MGCS. We describe a practical approach to the evaluation of these patients and our approach to their treatment. We will also elaborate on the key unmet needs in IgM MGCS and highlight potential areas for future research.
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Affiliation(s)
- Louis-Pierre Girard
- Aberdeen Royal Infirmary, National Health Service Grampian, Scotland, United Kingdom
| | - Cinnie Yentia Soekojo
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore, Singapore
| | - Melissa Ooi
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore, Singapore
| | - Wee Joo Chng
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sanjay de Mel
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore, Singapore
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15
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Thomas SK. SOHO State of the Art Updates and Next Questions: Waldenström Macroglobulinemia - 2021 Update on Management and Future Directions. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2022; 22:347-355. [PMID: 34980578 DOI: 10.1016/j.clml.2021.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/15/2021] [Accepted: 11/20/2021] [Indexed: 11/17/2022]
Abstract
Waldenstrom macroglobulinemia (WM) is a low-grade B-cell lymphoproliferative disorder. It is defined by having ≥ 10% bone marrow infiltration with lymphoplasmacytic cells and/or an immunoglobulin M (IgM) monoclonal gammopathy of ≥3g/dL. Risk factors include a personal history of IgM MGUS, and a family history of WM or a related disorder. Race, sex, and chronic antigen stimulation also appear to influence risk. Between 93 to 97% of patients with WM have a somatic mutation of the MYD88 gene. Of these, approximately 30% also have a mutation of CXCR4. The presence of a MYD88 mutation is associated with higher 10-year overall survival (90% vs. 73%; P < .001), while CXCR4 mutation status does not appear to have a similar effect. Based on consensus guidelines, WM patients with a disease-related hemoglobin level of less than 10g/dL, a platelet count of less than 100×10 9/L, bulky adenopathy or organomegaly, symptomatic hyperviscosity, severe neuropathy, amyloidosis, cryoglobulinemia, cold agglutinin disease, or evidence of disease transformation, should be considered for immediate therapy. Patients not meeting these criteria may be observed, with monitoring at 3 to 6 month intervals. When treatment is warranted, combinations of rituximab with alkylating agents and proteasome inhibitors are often effective, as are Bruton's tyrosine kinase (BTK) inhibitors and BCL-2 inhibitors. Selection among available regimens should take patients' gene mutation profile, disease-related features, and co-morbid conditions into account. Promising novel therapies in development include non-covalent BTK inhibitors, CXCR4 antagonists, BCL 2 inhibitors, bi-specific antibodies, radioimmunoconjugates, and CD19- and CD20-Targeted Chimeric Antigen Receptor T cells.
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Affiliation(s)
- Sheeba K Thomas
- Department of Lymphoma & Myeloma, University of Texas M.D. Anderson Cancer Center, Houston, TX.
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16
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Derman B, Castillo JJ, Sarosiek S, Beksac M. When a Monoclonal Gammopathy Is Not Multiple Myeloma. Am Soc Clin Oncol Educ Book 2022; 42:1-10. [PMID: 35394823 DOI: 10.1200/edbk_349643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Our knowledge of monoclonal gammopathies is continuously evolving. Once accepted as a possible precursor condition to multiple myeloma, monoclonal gammopathies as an entity are now associated with many renal, neurologic, and dermatologic disorders of clinical significance. This change has created a challenge for patients and clinicians, as a monoclonal gammopathy may be a harbinger not of multiple myeloma but of other lymphoproliferative disorders such as light-chain amyloidosis and Waldenström macroglobulinemia. Early recognition of monoclonal gammopathies along with a careful workup are essential in determining the next steps in the care of a given patient. Recognition has become all the more important as we understand how to triage the 4% to 9% of patients with monoclonal gammopathies depending on age, with the goal of limiting overdiagnosis and misdiagnosis. In this review, we focus on treatment strategies for patients with monoclonal gammopathies that are not multiple myeloma, including smoldering multiple myeloma, light-chain amyloidosis, and Waldenström macroglobulinemia.
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Affiliation(s)
| | - Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Shayna Sarosiek
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Meral Beksac
- Department of Hematology, Cebeci Hospital, Ankara University Dikimevi, Ankara, Turkey
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17
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Pratt G, El-Sharkawi D, Kothari J, D'Sa S, Auer R, McCarthy H, Krishna R, Miles O, Kyriakou C, Owen R. Diagnosis and management of Waldenström macroglobulinaemia-A British Society for Haematology guideline. Br J Haematol 2022; 197:171-187. [PMID: 35020191 DOI: 10.1111/bjh.18036] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 12/14/2022]
Abstract
SCOPE The objective of this guideline is to provide healthcare professionals with clear guidance on the management of patients with Waldenström macroglobulinaemia. In individual patients, circumstances may dictate an alternative approach. METHODOLOGY This guideline was compiled according to the British Society for Haematology (BSH) process at http://www.b-s-h.org.uk/guidelines/proposing-and-writing-a-new-bsh-guideline/. Recommendations are based on a review of the literature using Medline, Pubmed, Embase, Central, Web of Science searches from beginning of 2013 (since the publication of the previous guidelines) up to November 2021. The following search terms were used: Waldenström('s) macroglobulin(a)emia OR lymphoplasmacytic lymphoma, IgM(-related) neuropathy OR cold h(a)emagglutinin disease OR cold agglutinin disease OR cryoglobulin(a)emia AND (for group a only) cytogenetic OR molecular OR mutation OR MYD88 OR CXCR4, management OR treatment OR transfusion OR supportive care OR plasma exchange OR plasmapheresis OR chemotherapy OR bendamustine OR bortezomib OR ibrutinib OR fludarabine OR dexamethasone OR cyclophosphamide OR rituximab OR everolimus, bone marrow transplantation OR stem cell transplantation. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) nomenclature was used to evaluate levels of evidence and to assess the strength of recommendations. The GRADE criteria can be found at http://www.gradeworkinggroup.org. Review of the manuscript was performed by the British Society for Haematology (BSH) Guidelines Committee Haemato-Oncology Task Force, the BSH Guidelines Committee and the Haemato-Oncology sounding board of BSH. It was also on the members section of the BSH website for comment. It has also been reviewed by UK Charity WMUK; these organisations do not necessarily approve or endorse the contents.
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Affiliation(s)
- Guy Pratt
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | | | - Jaimal Kothari
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Shirley D'Sa
- University College London Hospitals NHS Foundation Trust, London, UK
| | | | - Helen McCarthy
- University Hospitals Dorset NHS Foundation Trust, Dorset, UK
| | - Rajesh Krishna
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Oliver Miles
- Gloucestershire Hospitals NHS Foundation Trust, Gloucester, UK
| | - Charalampia Kyriakou
- University College London Hospitals NHS Foundation Trust, London, UK
- London North West University Healthcare NHS Trust, London, UK
| | - Roger Owen
- The Leeds Teaching Hospitals NHS Trust, Leeds, UK
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18
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Ferrero S, Gentile M, Laurenti L, Mauro FR, Martelli M, Sportoletti P, Visco C, Zinzani PL, Tedeschi A, Varettoni M. Use of BTK inhibitors with special focus on ibrutinib in Waldenström macroglobulinemia: an expert panel opinion statement. Hematol Oncol 2022; 40:332-340. [PMID: 35212014 DOI: 10.1002/hon.2982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 11/07/2022]
Abstract
The pivotal role that ibrutinib plays in the management of Waldenström macroglobulinemia (WM) is undisputed but there are ongoing questions regarding its positioning in the therapeutic algorithm of WM as well as in some peculiar clinical situations. A panel of experts from Italy was convened to provide real world recommendations on the use of BTK inhibitors in lymphoproliferative diseases in general, and in patients with WM in particular. This position paper represents the panel's collective analysis, evaluation, and opinions and is made up of a series of questions frequently asked by practicing clinicians and answers based on currently available evidence. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- S Ferrero
- Department of Molecular Biotechnologies and Health Sciences, Division of Haematology, University of Torino, Torino, Italy/AOU "Città della Salute e della Scienza di Torino", Torino, Italy
| | | | - Luca Laurenti
- Hematology, Università Cattolica del Sacro Cuore, Policlinico A, Gemelli, Rome, Italy
| | - Francesca Romana Mauro
- Hematology, Department of Translational and Precision Medicine, 'Sapienza' University, Rome, Italy
| | - Maurizio Martelli
- Hematology, Department of Translational and Precision Medicine, 'Sapienza' University, Rome, Italy
| | - Paolo Sportoletti
- Department of Medicine, Institute of Hematology-Centro di Ricerche Emato-Oncologiche (CREO), University of Perugia, Perugia, Italy
| | - Carlo Visco
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
| | - Pier Luigi Zinzani
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia "Seràgnoli", Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale Università degli Studi, Bologna, Italy
| | - Alessandra Tedeschi
- Hematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - M Varettoni
- Division of Hematology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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19
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Morrison HD, Cleaver J, Lander N, Lowden P, Hale K, Sharma K, Stevens J. CANOMAD unmasked by COVID-19 in a man with Waldenström's macroglobulinaemia. EJHAEM 2021; 2:842-844. [PMID: 34518830 PMCID: PMC8426892 DOI: 10.1002/jha2.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Hamish D. Morrison
- Neurology DepartmentNorth Bristol NHS TrustBristolUK
- Population Health SciencesUniversity of BristolBristolUK
| | | | | | | | - Kate Hale
- Neurology DepartmentNorth Bristol NHS TrustBristolUK
| | | | - James Stevens
- Neurology DepartmentNorth Bristol NHS TrustBristolUK
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20
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Treatment of Patients with Monoclonal Gammopathy of Clinical Significance. Cancers (Basel) 2021; 13:cancers13205131. [PMID: 34680279 PMCID: PMC8533809 DOI: 10.3390/cancers13205131] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/29/2021] [Accepted: 10/08/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Monoclonal gammopathy of clinical significance (MGCS) is a recently recognized clinical-pathological entity. Symptoms are caused by the presence of a monoclonal protein leading to high comorbidity. The affected organs vary according to the target antigen However, as most of the knowledge relies on case reports or short series; there is a lack of consensus regarding treatment approach. Here, we discuss MGCS other than renal (skin, ocular, neurologic, and bleeding disorders). We provide insights into the pathophysiology, diagnosis, treatment, and follow-up based on clinical cases. Finally, we discuss future directions in this field, such as potential novel therapeutic targets and prognosis of patients with MGCS. Abstract Monoclonal gammopathy of undetermined significance (MGUS) is defined as the presence of a monoclonal protein (M-protein) produced by a small amount of plasma cells. The majority of patients remain asymptomatic; however, a fraction of them develop clinical manifestations related to the monoclonal gammopathy despite not fulfilling criteria of multiple myeloma or other lymphoproliferative disorder. These patients constitute an emerging clinical issue coined as monoclonal gammopathy of clinical significance (MGCS). The mechanisms involved are poorly understood, and literature is scarce regarding management. The clinical spectrum involves symptoms related to renal, neurologic, skin, ocular, or bleeding manifestations, requiring a multidisciplinary approach. Treatment strategies rely on the basis of symptomatic disease and the M-protein isotype. In this review, we focus on MGCS other than renal, as the latter was earliest recognized and better known. We review the literature and discuss management from diagnosis to treatment based on illustrative cases from daily practice.
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21
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Askari E, Rodriguez S, Garcia-Sanz R. Waldenström's Macroglobulinemia: An Exploration into the Pathology and Diagnosis of a Complex B-Cell Malignancy. J Blood Med 2021; 12:795-807. [PMID: 34512060 PMCID: PMC8416181 DOI: 10.2147/jbm.s267938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/19/2021] [Indexed: 12/22/2022] Open
Abstract
After 77 years since the initial description, Waldenström macroglobulinemia (WM) remains as a bone marrow neoplastic disorder with lymphoplasmacytic differentiation oversecreting a monoclonal immunoglobulin M (IgM). However, many biological and genetic aspects of this entity have been unraveled and it is now easy to correctly diagnose patients with this illness. The diagnosis requires the presence of a monoclonal IgM component and bone marrow lymphoid infiltration must be demonstrated. In addition, other small B-cell lymphoid neoplasms with plasma cell differentiation must be discarded. Although the clinical picture is highly heterogeneous, the diagnosis is much easier today compared to the past, since now we can demonstrate the presence of somatic mutations, especially the L265P mutation in the MYD88 gene, highly characteristic of WM (>90% of the patients), followed by the WHIM-like mutations in the CXCR4 gene (~35%). The identification of these mutations is very important, because they can modulate the response to new treatments with Bruton's tyrosine kinase (BTK) inhibitors. Thus, the conventional prognostic factors that predict the outcome of these patients (anemia, thrombopenia, high M component, high B2M, and advanced age), must be complemented with the genetic evaluation of the patient, that can help us in the prediction of the risk of transformation from asymptomatic to symptomatic forms (Del6q) and/or from indolent forms of the disease to aggressive lymphomas (CD79b mutations).
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Affiliation(s)
- Elham Askari
- Hematology Department, Fundación Jiménez Díaz, Centro de Investigación Biomédica en Red-Cáncer (CIBERONC) CB16/12/00369, Madrid, Spain
| | - Sara Rodriguez
- Clinica Universidad de Navarra, Centro de Investigación Medica Aplicada (CIMA), Instituto de Investigación Sanitaria de Navarra (IDISNA), Accelerator project, Centro de Investigación Biomédica en Red-Cáncer (CIBERONC) CB16/12/00369, Pamplona, Spain
| | - Ramon Garcia-Sanz
- Haematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Accelerator project, Centro de Investigación Biomédica en Red-Cáncer (CIBERONC) CB16/12/00369 and Center for Cancer Research-IBMCC (USAL-CSIC), Salamanca, Spain
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22
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Nathani D, Spies J, Barnett MH, Pollard J, Wang M, Sommer C, Kiernan MC. Nerve biopsy: Current indications and decision tools. Muscle Nerve 2021; 64:125-139. [PMID: 33629393 PMCID: PMC8359441 DOI: 10.1002/mus.27201] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/04/2021] [Accepted: 02/06/2021] [Indexed: 02/06/2023]
Abstract
After initial investigation of patients presenting with symptoms suggestive of neuropathy, a clinical decision is made for a minority of patients to undergo further assessment with nerve biopsy. Many nerve biopsies do not demonstrate a definitive pathological diagnosis and there is considerable cost and morbidity associated with the procedure. This highlights the need for appropriate selection of patients, nerves and neuropathology techniques. Additionally, concomitant muscle and skin biopsies may improve the diagnostic yield in some cases. Several advances have been made in diagnostics in recent years, particularly in genomics. The indications for nerve biopsy have consequently changed over time. This review explores the current indications for nerve biopsies and some of the issues surrounding its use. Also included are comments on alternative diagnostic modalities that may help to supplant or reduce the use of nerve biopsy as a diagnostic test. These primarily include extraneural biopsy and neuroimaging techniques such as magnetic resonance neurography and nerve ultrasound. Finally, we propose an algorithm to assist in deciding when to perform nerve biopsies.
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Affiliation(s)
- Dev Nathani
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - Judith Spies
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - Michael H. Barnett
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - John Pollard
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - Min‐Xia Wang
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
| | - Claudia Sommer
- Neurologische KlinikUniversitätsklinikum WürzburgWürzburgGermany
| | - Matthew C. Kiernan
- Brain and Mind CentreUniversity of SydneySydneyNew South WalesAustralia
- Institute of Clinical Neuroscience, Royal Prince Alfred HospitalSydneyNew South WalesAustralia
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23
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Abstract
Paraproteinaemic neuropathies comprise a heterogeneous group of neuro-haematological conditions with some distinct neurological, haematological and systemic phenotypes. The spectrum of disease varies from mild to severe, indolent to rapidly progressive and from small fibre sensory involvement to dramatic sensorimotor deficits. The haematological association may be overlooked, resulting in delayed treatment, disability, impaired quality of life and increased mortality. However, the presence of an irrelevant benign paraprotein can sometimes lead to inappropriate treatment. In this review, we outline our practical approach to paraproteinaemic disorders, discuss the utility and limitations of diagnostic tests and the distinctive clinical phenotypes and touch on the complex multidisciplinary management approaches.
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Affiliation(s)
- Antonia S Carroll
- Brain and Mind Centre, The University of Sydney, Sydney, New South Wales, Australia.,National Hospital for Neurology and Neurosurgery, London, UK
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24
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Pessach I, Dimopoulos MA, Kastritis E. Managing complications secondary to Waldenström's macroglobulinemia. Expert Rev Hematol 2021; 14:621-632. [PMID: 34170207 DOI: 10.1080/17474086.2021.1947236] [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: 10/21/2022]
Abstract
Introduction: Waldenström's macroglobulinemia (WM) is a rare lymphoma characterized by the accumulation of IgM-secreting lymphoplasmacytic cells in the bone marrow and other organs. Clinical sequelae relate to direct tissue infiltration by malignant cells but also to the physicochemical and immunological properties of the monoclonal IgM, resulting in a variety of disease-related complications.Areas covered: This narrative review, following a thorough Pubmed search of pertinent published literature, discusses complications secondary to WM, related to direct tumor infiltration, monoclonal IgM circulation, and deposition, as well as other less common ones. The description and pathophysiology of these complications were described together with their specific management strategies and in the context of available treatment options for WM (anti-CD20 monoclonal antibody-based combinations, proteasome inhibitors, BTK inhibitors, and other emerging ones).Expert opinion: The availability of many novel, active and less toxic regimens for the treatment of WM allows the management of the disease with strategies that depend on clinical presentation and disease-related complications, age, toxicity considerations, and presence of comorbidities.
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Affiliation(s)
- Ilias Pessach
- Division of Hematology, Athens Medical Center, Athens, Greece
| | - Meletios A Dimopoulos
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstathios Kastritis
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Athens, Greece
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25
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Castillo JJ, Callander NS, Baljevic M, Sborov DW, Kumar S. The evaluation and management of monoclonal gammopathy of renal significance and monoclonal gammopathy of neurological significance. Am J Hematol 2021; 96:846-853. [PMID: 33709474 PMCID: PMC8252623 DOI: 10.1002/ajh.26155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 03/07/2021] [Indexed: 12/24/2022]
Abstract
Despite the benign nature of monoclonal gammopathy of undetermined significance (MGUS), mounting data are associating MGUS with the development of organ dysfunction, specifically monoclonal gammopathy of renal significance (MGRS) and monoclonal gammopathy of neurological significance (MGNS), which could be associated with substantial morbidity. Emerging evidence suggests that patients with MGRS and MGNS could benefit from treatments used for myeloma, Waldenström macroglobulinemia, or chronic lymphocytic leukemia, depending on the underlying pathology. However, the treatment of MGRS and MGNS is not standardized, and potentially effective therapies might not be reimbursed because these conditions do not formally meet the criteria for malignant processes. The present review aims at establishing standards for the evaluation and management of MGRS and MGNS, which can facilitate the diagnosis of and provide therapeutic options for treating practitioners and patients affected by these conditions. The careful design and execution of clinical trials for patients with MGRS and MGNS are positively encouraged.
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Affiliation(s)
- Jorge J. Castillo
- Dana‐Farber Cancer Institute Harvard Medical School Boston Massachusetts
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26
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CANOMAD: a neurological monoclonal gammopathy of clinical significance that benefits from B-cell-targeted therapies. Blood 2021; 136:2428-2436. [PMID: 32959046 DOI: 10.1182/blood.2020007092] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/01/2020] [Indexed: 12/15/2022] Open
Abstract
CANOMAD (chronic ataxic neuropathy, ophthalmoplegia, immunoglobulin M [IgM] paraprotein, cold agglutinins, and disialosyl antibodies) is a rare syndrome characterized by chronic neuropathy with sensory ataxia, ocular, and/or bulbar motor weakness in the presence of a monoclonal IgM reacting against gangliosides containing disialosyl epitopes. Data regarding associated hematologic malignancies and effective therapies in CANOMAD are scarce. We conducted a French multicenter retrospective study that included 45 patients with serum IgM antibodies reacting against disialosyl epitopes in the context of evocating neurologic symptoms. The main clinical features were sensitive symptoms (ataxia, paresthesia, hypoesthesia; n = 45, 100%), motor weakness (n = 18, 40%), ophthalmoplegia (n = 20, 45%), and bulbar symptoms (n = 6, 13%). Forty-five percent of the cohort had moderate to severe disability (modified Rankin score, 3-5). Cold agglutinins were identified in 15 (34%) patients. Electrophysiologic studies showed a demyelinating or axonal pattern in, respectively, 60% and 27% of cases. All patients had serum monoclonal IgM gammopathy (median, 2.6 g/L; range, 0.1-40 g/L). Overt hematologic malignancies were diagnosed in 16 patients (36%), with the most frequent being Waldenström macroglobulinemia (n = 9, 20%). Forty-one patients (91%) required treatment of CANOMAD. Intravenous immunoglobulins (IVIg) and rituximab-based regimens were the most effective therapies with, respectively, 53% and 52% of partial or better clinical responses. Corticosteroids and immunosuppressive drugs were largely ineffective. Although more studies are warranted to better define the optimal therapeutic sequence, IVIg should be proposed as the standard of care for first-line treatment and rituximab-based regimens for second-line treatment. These compiled data argue for CANOMAD to be included in neurologic monoclonal gammopathy of clinical significance.
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27
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Colchester NTH, Allen D, Katifi HA, Burt T, Lown RN, Pinto AA, Duncombe AS. Chemoimmunotherapy with rituximab, cyclophosphamide and prednisolone in IgM paraproteinaemic neuropathy: evidence of sustained improvement in electrophysiological, serological and functional outcomes. Haematologica 2021; 106:302-305. [PMID: 32354875 PMCID: PMC7776249 DOI: 10.3324/haematol.2019.243139] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Nancy T H Colchester
- Department of Neurology, Wessex Neurological Centre, University Hospital Southampton
| | - David Allen
- Department of Neurophysiology, Wessex Neurological Centre, University Hospital Southampton
| | - Haider A Katifi
- Department of Neurology, Wessex Neurological Centre, University Hospital Southampton
| | - Tracy Burt
- Department of Haematology, University Hospital Southampton
| | - Robert N Lown
- Department of Haematology, University Hospital Southampton
| | - Ashwin A Pinto
- Department of Neurology, Wessex Neurological Centre, University Hospital Southampton
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28
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Jayadev Menon P, Alexander MD, Costelloe L, MacMahon J, Tobin AM, Desmond R, Murphy SM. Scleromyxoedema, blistering lesions and progressive sensorimotor neuropathy in Waldenström's macroglobulinaemia. Pract Neurol 2020; 21:practneurol-2020-002577. [PMID: 32855210 DOI: 10.1136/practneurol-2020-002577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2020] [Indexed: 11/04/2022]
Affiliation(s)
| | - Michael D Alexander
- Department of Neurophysiology, Tallaght University Hospital, Dublin, Ireland
- Academic Unit of Neurology, Trinity College Dublin, Dublin, Ireland
| | | | - Julie MacMahon
- Dermatology, Tallaght University Hospital, Dublin, Ireland
| | | | - Ronan Desmond
- Haematology, Tallaght University Hospital, Dublin, Ireland
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29
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Kuang Q, Yu J, Zhang X, Yang F, Chen X, Xiao W, Fan Y, Wang Y. Trochlear nerve damage resulting from Waldenstrom's macroglobulinemia: A case report and literature review. Rev Neurol (Paris) 2020; 177:317-319. [PMID: 32807406 DOI: 10.1016/j.neurol.2020.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 10/23/2022]
Affiliation(s)
- Qing Kuang
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China.
| | - Juming Yu
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Xiaodong Zhang
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Fei Yang
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Xiaoling Chen
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Wei Xiao
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Yang Fan
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
| | - Yirong Wang
- Affiliated Hospital of North Sichuan Medical College Nanchong, 637000 Sichuan, China
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Kimyongur S, Hywel B, Holt J. The use of IVIg in the treatment of inflammatory polyneuropathies and myasthenia gravis at The Walton Centre. J R Coll Physicians Edinb 2020; 49:5-11. [PMID: 30838984 DOI: 10.4997/jrcpe.2019.102] [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] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Immunoglobulin is a blood product used in a variety of medical disorders, usually delivered intravenously (IVIg). Neurology patients, particularly those with inflammatory polyneuropathy, utilise a lot of IVIg. There is a national shortage of immunoglobulin and, thus, pressing need to ensure minimum effective dosing as well as rigorous outcome assessments to assess benefit at treatment start and subsequently, as placebo effects can be strong. METHODS Serial audit of IVIg use at The Walton Centre against national guidelines was carried out through analysis of clinical notes of day unit patients. Review of the national immunoglobulin database and of neurology outpatient notes to benchmark our practice and provide some comparison with the wider nation was also performed. RESULTS Serial audit led to improved adherence to guidelines, and analysis of practice identified wide variation in IVIg use. CONCLUSION Local audit and benchmarking of practice can be used to promote quality and consistency of IVIg use across the NHS.
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Affiliation(s)
| | - Brython Hywel
- The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - James Holt
- Neurology Department, The Walton Centre, Lower Lane, Fazakerley, Liverpool L9 7LJ, UK, .,Liverpool University, UK
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31
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How I treat Waldenström macroglobulinemia. Blood 2020; 134:2022-2035. [PMID: 31527073 DOI: 10.1182/blood.2019000725] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 08/07/2019] [Indexed: 12/14/2022] Open
Abstract
Waldenström macroglobulinemia (WM) is an uncommon lymphoma characterized by the infiltration of the bone marrow by clonal lymphoplasmacytic cells that produce monoclonal immunoglobulin M (IgM). The disease may have an asymptomatic phase, or patients may present with symptoms and complications resulting from marrow or other tissue infiltration, or from physicochemical or immunological properties of the monoclonal IgM. Diagnosis of WM has been clearly defined, and genetic testing for somatic mutation of MYD88L265P is a useful tool for differential diagnosis from other conditions. Specific criteria that define symptomatic disease that needs treatment offer clinical guidance. The treatment of WM has evolved rapidly, with treatment options that include anti-CD20 monoclonal antibody-based combinations and BTK inhibitors. The choice of therapy is based on the need for rapid disease control, presence of specific disease complications, and patient's age. With the use of BTK inhibitors, the use of continuous therapy has been introduced as another option over fixed-duration chemoimmunotherapy. In this review, we focus on different clinical scenarios and discuss treatment options, based on the available data.
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32
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Castillo JJ, Itchaki G, Gustine JN, Meid K, Flynn CA, Demos MG, Guerrera ML, Jimenez C, Kofides A, Liu X, Munshi M, Tsakmaklis N, Patterson CJ, Xu L, Yang G, Hunter ZR, Treon SP. A matched case-control study comparing features, treatment and outcomes between patients with non-IgM lymphoplasmacytic lymphoma and Waldenström macroglobulinemia. Leuk Lymphoma 2020; 61:1388-1394. [PMID: 31992103 DOI: 10.1080/10428194.2020.1719100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cases of non-IgM lymphoplasmacytic lymphoma (LPL) are rare. We performed a case-control study comparing features and outcomes of 31 non-IgM LPL cases and 93 Waldenström macroglobulinemia (WM) controls matched by age, sex, and year of diagnosis. Odds of MYD88 mutations were lower (odds ratio (OR) 0.22, p = .05), and median time to treatment was shorter in cases than in controls (4 vs. 32 months; p < .001). Odds of extramedullary disease were higher (OR 4.20, p = .01), while odds of neuropathy (OR 0.22, p = .25), and hyperviscosity (OR 0.26, p = .26) were lower in cases than in controls. Odds of using chemoimmunotherapy were higher (OR 2.62, p = .11) while odds of using proteasome inhibitors (OR 0.35, p = .15) and BTK inhibitors (OR 0.17, p = .21) were lower in cases than in controls. There were no differences in response and overall survival (OS) between cases and controls. Despite clinicopathological differences, response, and survival outcomes are similar between non-IgM LPL cases and WM controls.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Gilad Itchaki
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah-Tikva, Israel
| | - Joshua N Gustine
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Kirsten Meid
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Catherine A Flynn
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Maria G Demos
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Maria L Guerrera
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Cristina Jimenez
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Amanda Kofides
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Xia Liu
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Manit Munshi
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nicholas Tsakmaklis
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Christopher J Patterson
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Lian Xu
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Guang Yang
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Zachary R Hunter
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
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33
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Maqbool MG, Tam CS, Morison IM, Simpson D, Mollee P, Schneider H, Chan H, Juneja S, Harvey Y, Nath L, Hissaria P, Prince HM, Wordsworth H, Opat S, Talaulikar D. A practical guide to laboratory investigations at diagnosis and follow up in Waldenström macroglobulinaemia: recommendations from the Medical and Scientific Advisory Group, Myeloma Australia, the Pathology Sub-committee of the Lymphoma and Related Diseases Registry and the Australasian Association of Clinical Biochemists Monoclonal Gammopathy Working Group. Pathology 2020; 52:167-178. [PMID: 31902622 DOI: 10.1016/j.pathol.2019.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/07/2019] [Accepted: 11/10/2019] [Indexed: 01/30/2023]
Abstract
Waldenström macroglobulinaemia (WM) is an indolent non-Hodgkin lymphoma which usually presents with symptoms related to infiltration of bone marrow or other tissues like lymph nodes, liver or spleen and has certain unusual clinical manifestations, e.g., renal and central nervous system (CNS) involvement. It also has an array of laboratory features including hypersecretion of IgM, cryoglobulinaemia, increased plasma viscosity and identification of mutated MYD88L265P in more than 90% of cases. In this review, we aim to provide a guide to the laboratory investigations recommended for WM at initial diagnosis and at follow-up. A discussion on the nuances of diagnosis and differential diagnoses is followed by bone marrow (BM) assessment, measurement of paraprotein and other ancillary investigations. Recommendations are provided on laboratory work-up at diagnosis, in the asymptomatic follow-up phase, and during and post-treatment. Finally, we briefly discuss the implications of laboratory diagnosis in regard to recruitment and monitoring on clinical trials.
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Affiliation(s)
- M Gohar Maqbool
- Department of Haematology, ACT Pathology, Canberra Hospital, ACT, Australia; ANU Medical School, College of Medicine and Health, Australian National University, Canberra, ACT, Australia
| | - Constantine S Tam
- Peter MacCallum Cancer Center, St Vincent's Hospital and University of Melbourne, Melbourne, Vic, Australia
| | - Ian M Morison
- Southern Community Laboratories, Dunedin, New Zealand; Australasian Association of Clinical Biochemists (AACB) Monoclonal Gammopathy Working Group (MGWG), Australia
| | - David Simpson
- Department of Haematology, Waitemata District Health Board, Auckland, New Zealand; Medical and Scientific Advisory Group, Myeloma Australia
| | - Peter Mollee
- Australasian Association of Clinical Biochemists (AACB) Monoclonal Gammopathy Working Group (MGWG), Australia; Medical and Scientific Advisory Group, Myeloma Australia; Department of Haematology, Princess Alexandra Hospital and University of Queensland Medical School, Brisbane, Qld, Australia
| | - Hans Schneider
- Australasian Association of Clinical Biochemists (AACB) Monoclonal Gammopathy Working Group (MGWG), Australia; Alfred Pathology Service and Monash University, Melbourne, Vic, Australia
| | - Henry Chan
- Department of Haematology, Waitemata District Health Board, Auckland, New Zealand; Medical and Scientific Advisory Group, Myeloma Australia
| | - Surender Juneja
- Royal Melbourne Hospital and Peter MacCallum Cancer Centre, Melbourne, Vic, Australia; Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia
| | - Yasmin Harvey
- Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia; Sullivan Nicolaides Pathology, Brisbane, Qld, Australia
| | - Lakshmi Nath
- Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia; Department of Haematology and Transfusion Medicine, Clinpath Pathology, Adelaide, SA, Australia
| | - Pravin Hissaria
- Australasian Association of Clinical Biochemists (AACB) Monoclonal Gammopathy Working Group (MGWG), Australia; Royal Adelaide Hospital, University of Adelaide and SA Pathology, Adelaide, SA, Australia
| | - H Miles Prince
- Medical and Scientific Advisory Group, Myeloma Australia; Epworth Healthcare, Peter MacCallum Cancer Centre and University of Melbourne, Melbourne, Vic, Australia
| | - Helen Wordsworth
- Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia; Sullivan Nicolaides Pathology, Brisbane, Qld, Australia
| | - Stephen Opat
- Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia; Department of Haematology, Monash Health, Melbourne, Vic, Australia
| | - Dipti Talaulikar
- Department of Haematology, ACT Pathology, Canberra Hospital, ACT, Australia; ANU Medical School, College of Medicine and Health, Australian National University, Canberra, ACT, Australia; Medical and Scientific Advisory Group, Myeloma Australia; Pathology Sub-committee of the Lymphoma and Related Diseases Registry (LaRDR), Australia.
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34
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Frustaci AM, Nichelatti M, Deodato M, Zamprogna G, Minga P, Pioltelli ML, Cairoli R, Tedeschi A. Health‐related quality of life in Waldenstrom Macroglobulinemia and IgM‐related disorders: A single institution experience. Hematol Oncol 2019; 38:111-113. [DOI: 10.1002/hon.2699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Maria Frustaci
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Michele Nichelatti
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Marina Deodato
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Giulia Zamprogna
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Periana Minga
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Maria Luisa Pioltelli
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Roberto Cairoli
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
| | - Alessandra Tedeschi
- ASST Grande Ospedale Metropolitano Niguarda, Department of HematologyNiguarda Cancer Center Milan Italy
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35
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Chen LY, Keddie S, Lunn MP, Bomsztyk J, Vitsaras E, Gupta R, D'Sa S. IgM paraprotein‐associated peripheral neuropathy: small CD20‐positive B‐cell clones may predict a monoclonal gammopathy of neurological significance and rituximab responsiveness. Br J Haematol 2019; 188:511-515. [DOI: 10.1111/bjh.16210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/26/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Lucia Y. Chen
- Cancer Division University College London Hospitals NHS Foundation Trust London UK
| | - Stephen Keddie
- MRC Centre for Neuromuscular Disease National Hospital of Neurology and Neurosurgery and Department of Molecular Neuroscience UCL Institute of Neurology London UK
- Neuroimmunology and CSF laboratory UCL Institute of Neurology National Hospital for Neurology and Neurosurgery University College London Hospitals NHS Foundation Trust London UK
| | - Michael P. Lunn
- MRC Centre for Neuromuscular Disease National Hospital of Neurology and Neurosurgery and Department of Molecular Neuroscience UCL Institute of Neurology London UK
- Neuroimmunology and CSF laboratory UCL Institute of Neurology National Hospital for Neurology and Neurosurgery University College London Hospitals NHS Foundation Trust London UK
| | - Joshua Bomsztyk
- Cancer Division University College London Hospitals NHS Foundation Trust London UK
| | | | | | - Shirley D'Sa
- Cancer Division University College London Hospitals NHS Foundation Trust London UK
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36
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37
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Abstract
Bing-Neel syndrome (BNS) is an uncommon presentation of Waldenström macroglobulinaemia (WM), seen during the course of the disease in about 1% of patients. BNS occurs when WM cells gain access to the central nervous system (CNS) causing neurological deficits. The diagnosis of BNS is suggested by the presence of radiological abnormalities, such as leptomeningeal enhancement on magnetic resonance imaging and confirmed by the presence of clonal lymphoplasmacytic cells and MYD88 L265P in the cerebrospinal fluid. The treatment of BNS requires agents with good penetration into the CNS, such as fludarabine, methotrexate and cytarabine. The novel Bruton Tyrosine Kinase inhibitor ibrutinib has shown CNS-penetrating properties, and recent data suggest a therapeutic role in BNS. In this review, we will discuss the clinical and pathological features, diagnostic criteria, treatment options and outcomes of patients with BNS.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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38
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Waldenström's macroglobulinemia front line treatment. Hemasphere 2019; 3:HEMASPHERE-2019-0032. [PMID: 35309820 PMCID: PMC8925655 DOI: 10.1097/hs9.0000000000000222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/11/2019] [Accepted: 03/19/2019] [Indexed: 12/11/2022] Open
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39
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Kastritis E, Leblond V, Dimopoulos MA, Kimby E, Staber P, Kersten MJ, Tedeschi A, Buske C. Waldenström's macroglobulinaemia: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up. Ann Oncol 2018; 29:iv41-iv50. [PMID: 29982402 DOI: 10.1093/annonc/mdy146] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023] Open
Affiliation(s)
- E Kastritis
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - V Leblond
- Department of Hematology, Pitié Salpêtrière Hospital, Pierre and Marie Curie University, UPMC GRC11-GRECHY, Paris, France
| | - M A Dimopoulos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - E Kimby
- Division of Hematology, Department of Medicine at Huddinge, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - P Staber
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Vienna General Hospital, Vienna, Austria
| | - M J Kersten
- Department of Hematology, Academic Medical Center
- LYMMCARE (Lymphoma and Myeloma Center Amsterdam), Amsterdam, The Netherlands
| | - A Tedeschi
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - C Buske
- Comprehensive Cancer Center Ulm, Institute of Experimental Cancer Research, University Hospital Ulm, Ulm, Germany
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40
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An update on the diagnosis and management of the polyneuropathy of POEMS syndrome. J Neurol 2018; 266:258-267. [PMID: 30264176 PMCID: PMC6343023 DOI: 10.1007/s00415-018-9068-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 09/10/2018] [Accepted: 09/17/2018] [Indexed: 01/05/2023]
Abstract
POEMS syndrome is a rare, chronic, disabling paraneoplastic disorder characterized by peripheral neuropathy, organomegaly, endocrinopathy, monoclonal plasma cells disorder and skin changes. Diagnosis relies on the fulfillment of a set of clinical criteria of which polyneuropathy and a monoclonal plasma cell dyscrasia are early and essential features. Treatment may be either local or systemic and is aimed at the monoclonal plasma cell disorder. Our knowledge of the pathogenesis underlying the POEMS syndrome has advanced greatly over the past years, favoring an important progression in the recognition and management of this disorder. Here, we discuss the recent literature that has advanced our knowledge of the pathogenesis and clinical management of the polyneuropathy in POEMS syndrome.
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41
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Gertz MA. Selecting Initial Therapy for Newly Diagnosed Waldenström Macroglobulinemia. J Clin Oncol 2018; 36:2749-2751. [PMID: 30052482 DOI: 10.1200/jco.2018.79.3273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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42
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Tedeschi A, Conticello C, Rizzi R, Benevolo G, Laurenti L, Petrucci MT, Zaja F, Varettoni M. Diagnostic framing of IgM monoclonal gammopathy: Focus on Waldenström macroglobulinemia. Hematol Oncol 2018; 37:117-128. [DOI: 10.1002/hon.2539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Alessandra Tedeschi
- Department of HematologyNiguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda Milan Italy
| | - Concetta Conticello
- Department of Clinical and Molecular Biomedicine, Haematology SectionUniversity of Catania Catania Italy
| | - Rita Rizzi
- Department of Emergency and Organ Transplantation, Hematology SectionUniversity of Bari Medical School Bari Italy
| | - Giulia Benevolo
- Division of HematologyAOU Città della Salute e della Scienza Torino Italy
| | - Luca Laurenti
- Department of HematologyCatholic University Hospital “A. Gemelli” Rome Italy
| | - Maria Teresa Petrucci
- Hematology, Department of Cellular Biotechnologies and Hematology“Sapienza” University Rome Italy
| | - Francesco Zaja
- Clinica Ematologica, Centro Trapianti e Terapie Cellulari “Carlo Melzi”University of Udine Udine Italy
| | - Marzia Varettoni
- Division of HematologyFondazione IRCCS Policlinico S. Matteo Pavia Italy
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43
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Vos JM, Notermans NC, D'Sa S, Lunn MP, van der Pol WL, Kraan W, Reilly MM, Chalker J, Gupta R, Kersten MJ, Pals ST, Minnema MC. High prevalence of the MYD88 L265P mutation in IgM anti-MAG paraprotein-associated peripheral neuropathy. J Neurol Neurosurg Psychiatry 2018; 89:1007-1009. [PMID: 29018161 DOI: 10.1136/jnnp-2017-316689] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/01/2017] [Accepted: 10/02/2017] [Indexed: 12/12/2022]
Affiliation(s)
| | | | - Shirley D'Sa
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Michael P Lunn
- University College London Hospitals NHS Foundation Trust, London, UK
| | | | - Willem Kraan
- Department of Pathology, Academic Medical Center, Amsterdam, The Netherlands.,Lymphoma and Myeloma Center (LYMMCARE), Amsterdam, The Netherlands
| | - Mary M Reilly
- MRC Centre for Neuromuscular Diseases, UCL Institute of Neurology, London, UK
| | | | - Rajeev Gupta
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Marie-José Kersten
- Lymphoma and Myeloma Center (LYMMCARE), Amsterdam, The Netherlands.,Department of Hematology, Academic Medical Center, Amsterdam, The Netherlands
| | - Steven T Pals
- Department of Pathology, Academic Medical Center, Amsterdam, The Netherlands.,Lymphoma and Myeloma Center (LYMMCARE), Amsterdam, The Netherlands
| | - Monique C Minnema
- Department of Hematology, UMC Utrecht Cancer Center, Amsterdam, The Netherlands
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44
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Castillo JJ, Treon SP. Initial Evaluation of the Patient with Waldenström Macroglobulinemia. Hematol Oncol Clin North Am 2018; 32:811-820. [PMID: 30190019 DOI: 10.1016/j.hoc.2018.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The initial evaluation of the patient with Waldenström macroglobulinemia can be challenging. Not only is it a rare disease, but the clinical features can vary greatly from patient to patient. In this article, we aim at providing concise and practical recommendations for the initial evaluation of patients with Waldenström macroglobulinemia, specifically regarding history taking, physical examination, laboratory testing, bone marrow aspiration, and biopsy evaluation and imaging studies. We then review the most common special clinical situations seen in patients with Waldenström macroglobulinemia, especially anemia, hyperviscosity, cryoglobulinemia, peripheral neuropathy, extramedullary disease, Bing-Neel syndrome, and amyloidosis.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Mayer 221, Boston, MA 02215, USA.
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Mayer 221, Boston, MA 02215, USA
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45
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Fox TA, Lunn M, Wechalekar A, Bomanji J, Wan S, D'Sa S. [ 18F]Florbetaben PET-CT confirms AL amyloidosis in a patient with Waldenström's Macroglobulinemia. Haematologica 2018; 103:e322-e324. [PMID: 29650640 PMCID: PMC6029523 DOI: 10.3324/haematol.2017.184515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Thomas A Fox
- University College Hospitals NHS Foundation Trust, London
| | - Michael Lunn
- University College Hospitals NHS Foundation Trust, London
- National Institute for Health Research, University College London Hospitals Biomedical Research Centre
| | - Ashutosh Wechalekar
- Centre for Amyloidosis & Acute Phase Proteins Division of Medicine (Royal Free Campus) University College London
| | - Jamshed Bomanji
- Institute of Nuclear Medicine, University College London/University College London Hospitals NHS Trust, UK
| | - Simon Wan
- Institute of Nuclear Medicine, University College London/University College London Hospitals NHS Trust, UK
| | - Shirley D'Sa
- University College Hospitals NHS Foundation Trust, London s.d'
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46
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Gertz MA. Waldenström macroglobulinemia treatment algorithm 2018. Blood Cancer J 2018; 8:40. [PMID: 29712895 PMCID: PMC5928091 DOI: 10.1038/s41408-018-0076-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/01/2018] [Accepted: 03/08/2018] [Indexed: 12/11/2022] Open
Abstract
Waldenström macroglobulinemia is often an indolent disorder, and many patients are candidates for observation with careful monitoring. For symptomatic patients, one must distinguish between those patients whose symptoms are related to immunologic manifestations associated with the IgM monoclonal protein and those that have symptoms related to progressive marrow and nodal infiltration with lymphoplasmacytic lymphoma. In Waldenström macroglobulinemia, the driver for therapy in the majority of patients is progressive anemia, secondary to bone marrow replacement by lymphoplasmacytic lymphoma. Recent introduction of MYD88 mutational analysis has been very useful for diagnostic purposes but is unclear what effect it might have on the prognosis or response rate to therapy. An algorithm is provided on the management of asymptomatic individuals and the sequence used for chemotherapeutic intervention of symptomatic patients.
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Affiliation(s)
- Morie A Gertz
- Division of Hematology, Mayo Clinic, 200 First Street, SW, Rochester, MN, 55905, USA.
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47
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Allain JS, Thonier F, Pihan M, Boulland ML, de Guibert S, Launay V, Doncker AV, Ganard M, Aliouat A, Pangault C, Houot R, De Tayrac M, Lamy T, Roussel M, Fest T, Decaux O, Pastoret C. IGHV segment utilization in immunoglobulin gene rearrangement differentiates patients with anti-myelin-associated glycoprotein neuropathy from others immunoglobulin M-gammopathies. Haematologica 2018; 103:e207-e210. [PMID: 29371323 DOI: 10.3324/haematol.2017.177444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
| | - Florian Thonier
- Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France
| | | | | | | | | | | | - Michel Ganard
- Université de Rennes 1, France.,Service d'Hématologie Clinique, CHU de Rennes, France
| | - Amyra Aliouat
- Laboratoire de Bioinformatique Médicale, Pôle de Biologie, CHU Rennes, France
| | - Céline Pangault
- Université de Rennes 1, France.,Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Roch Houot
- Université de Rennes 1, France.,Service d'Hématologie Clinique, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Marie De Tayrac
- Université de Rennes 1, France.,Laboratoire de Bioinformatique Médicale, Pôle de Biologie, CHU Rennes, France
| | - Thierry Lamy
- Université de Rennes 1, France.,Service d'Hématologie Clinique, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Mikael Roussel
- Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Thierry Fest
- Université de Rennes 1, France.,Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Olivier Decaux
- Service de Médecine Interne, CHU de Rennes, France.,Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
| | - Cedric Pastoret
- Université de Rennes 1, France .,Laboratoire d'Hématologie, Pôle de Biologie, CHU de Rennes, France.,INSERM, UMR U1236, Equipe labellisée Ligue contre le Cancer, Rennes, France
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48
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Mazzucchelli M, Frustaci AM, Deodato M, Cairoli R, Tedeschi A. Waldenstrom's Macroglobulinemia: An Update. Mediterr J Hematol Infect Dis 2018; 10:e2018004. [PMID: 29326801 PMCID: PMC5760071 DOI: 10.4084/mjhid.2018.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 11/13/2017] [Indexed: 12/19/2022] Open
Abstract
Waldenstrom Macroglobulinemia is a rare lymphoproliferative disorder with distinctive clinical features. Diagnostic and prognostic characterisation in WM significantly changed with the discovery of two molecular markers: MYD88 and CXCR4. Mutational status of these latter influences both clinical presentation and prognosis and demonstrated therapeutic implications. Treatment choice in Waldenstrom disease is strictly guided by patients age and characteristics, specific goals of therapy, the necessity for rapid disease control, the risk of treatment-related neuropathy, disease features, the risk of immunosuppression or secondary malignancies and potential for future autologous stem cell transplantation. The therapeutic landscape has expanded during the last years and the approval of ibrutinib, the first drug approved for Waldenstrom Macroglobulinemia, represents a significant step forward for a better management of the disease.
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Affiliation(s)
- Maddalena Mazzucchelli
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano
| | - Anna Maria Frustaci
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano
| | - Marina Deodato
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano
| | - Roberto Cairoli
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano
| | - Alessandra Tedeschi
- Department of Haematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano
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49
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Abstract
Waldenstrom Macroglobulinemia is a rare lymphoproliferative disorder with distinctive clinical features. Diagnostic and prognostic characterisation in WM significantly changed with the discovery of two molecular markers: MYD88 and CXCR4. Mutational status of these latter influences both clinical presentation and prognosis and demonstrated therapeutic implications. Treatment choice in Waldenstrom disease is strictly guided by patients age and characteristics, specific goals of therapy, the necessity for rapid disease control, the risk of treatment-related neuropathy, disease features, the risk of immunosuppression or secondary malignancies and potential for future autologous stem cell transplantation. The therapeutic landscape has expanded during the last years and the approval of ibrutinib, the first drug approved for Waldenstrom Macroglobulinemia, represents a significant step forward for a better management of the disease.
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50
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Paludo J, Ansell SM. Advances in the understanding of IgM monoclonal gammopathy of undetermined significance. F1000Res 2017; 6:2142. [PMID: 29399323 PMCID: PMC5785715 DOI: 10.12688/f1000research.12880.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/13/2017] [Indexed: 12/12/2022] Open
Abstract
Among monoclonal gammopathies of undetermined significance (MGUSs), the immunoglobulin M (IgM) MGUS subtype stands as a unique entity and plays a pivotal role as a pre-malignant condition for multiple B-cell non-Hodgkin lymphomas, most notably Waldenström macroglobulinemia (WM). A relationship between IgM MGUS and WM has been proposed for decades. However, insight regarding the pathobiology of these two conditions improved significantly in recent years, strengthening the hypothesis that WM and IgM MGUS are different stages of the same disease. Therefore, the understanding of IgM MGUS and that of WM are interconnected and advances in one will likely impact the other. Furthermore, IgM MGUS has been more commonly recognized as the underlying etiology of IgM-related disorders. In this review, we explore recent advances in the understanding of the pathobiology of IgM MGUS and WM and the treatment of common IgM-related disorders.
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Affiliation(s)
- Jonas Paludo
- Department of Medicine, Division of Hematology, Mayo Clinic , Rochester, USA
| | - Stephen M Ansell
- Department of Medicine, Division of Hematology, Mayo Clinic , Rochester, USA
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