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Leukemia. 2018 Sep;32(9):1883-1898. doi: 10.1038/s41375-018-0209-7. Epub 2018 Jul 23.

European myeloma network recommendations on diagnosis and management of patients with rare plasma cell dyscrasias.

Author information

1
Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.
2
Scientific Direction, IRCCS-CROB, Referral Cancer Center of Basilacata, Rionero in Vulture (Pz), Vulture, Italy.
3
Department of Hematology, University Hospital of Liege, Liege, Belgium.
4
Department of Molecular Medicine, Amyloidosis Research and Treatment Center, Foundation 'Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo', University of Pavia, Pavia, Italy.
5
Department of Hematology, VU University Medical Center, Cancer Center Amsterdam, Amsterdam, The Netherlands.
6
Division of Hematology, S. Giovanni Battista Hospital, University of Turin, Turin, Italy.
7
Department of Internal Medicine V, Amyloidosis Center, University of Heidelberg, Heidelberg, Germany.
8
Department of HematoOncology, University Hospital Ostrava and Faculty of Medicine OU, Ostrava, Czech Republic.
9
Department of Hematology & Oncology, Schön Klinik Starnberger See, Berg, Germany.
10
Department of Internal Medicine II, University Hospital Würburg, Würzburg, Germany.
11
Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.
12
Department of Medicine I, Hematology, Oncology & Stem Cell Transplantation, Medical Center - University of Freiburg, Faculty of Medicine, Freiburg, Germany.
13
Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece. eterpos@med.uoa.gr.

Abstract

The introduction of novel agents in the management of multiple myeloma and related plasma cell dyscrasias has changed our treatment approaches and subsequently the outcome of patients. Due to current advances, the European Myeloma Network updated the diagnostic and therapeutic recommendations for patients with Waldenström's macroglobulinemia (WM), AL-amyloidosis, monoclonal immunoglobulin deposition disease (MIDD), POEMS syndrome, and primary plasma cell leukemia. For patients with WM, the combination of rituximab with chemotherapy remains the treatment cornerstone, while the Bruton-tyrosine kinase inhibitor ibrutinib has been introduced and approved for relapsed/refractory disease. The management of light chain amyloidosis depends on the presence and severity of heart disfunction. If present, intensification with an autologous stem cell transplantation (ASCT) is not recommended. Further aggregation of misfolded light chains could be prevented by doxycycline or monoclonal antibodies targeting amyloid deposits. Initial treatment generally consists of melphalan/dexamethasone or bortezomib-based regimens. For relapsing patients, one can consider proteasome inhibitors, immunomodulatory agents, melphalan or daratumumab. Because intact or light-chain immunoglobulins are also the culprits for MIDD, the small monoclonal plasma cells' clones should be treated and generally respond well to bortezomib-based treatment. POEMS syndrome is a well-defined clinical entity that can present as solitary bone lesions or disseminated disease. Radiation therapy is used for patients with localized disease and result in long-lasting response. Systemic treatment should be proposed to patients with disseminated disease, but regimens that can worsen a pre-existing polyneuropathy should be avoided. PPCL is located at the other end of the spectrum of plasma cell disorders and is associated with an aggressive disease course and poor prognosis. It requires an imminent, multi-phase and novel agents-based therapy, including induction, ASCT, consolidation and maintenance, with short treatment-free intervals. Patients not eligible for transplant procedures require personalized, intensive therapeutic approach. Allogeneic stem cell transplantation can be used in selected patients.

PMID:
30038381
DOI:
10.1038/s41375-018-0209-7

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