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Afrough A, Alsfeld LC, Milton DR, Delgado R, Popat UR, Nieto Y, Kebriaei P, Oran B, Saini N, Srour S, Hosing C, Cheema FH, Ahmed S, Manasanch EE, Lee HC, Kaufman GP, Patel KK, Weber DM, Orlowski RZ, Pinnix CC, Dabaja BS, Thomas SK, Champlin RE, Shpall EJ, Qazilbash MH, Bashir Q. Long-Term Outcomes of Allogeneic Hematopoietic Cell Transplantation in Patients with Newly Diagnosed Multiple Myeloma. Transplant Cell Ther 2023; 29:264.e1-264.e9. [PMID: 35605883 DOI: 10.1016/j.jtct.2022.05.023] [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: 01/13/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 02/05/2023]
Abstract
Despite remarkable progress in survival with the availability of novel agents, an overwhelming majority of patients with multiple myeloma (MM) have disease that relapses. Allogeneic (allo-) hematopoietic cell transplantation (HCT) is a potentially curative option for a subgroup of patients with high-risk MM. This study assessed the long-term outcome of MM patients who underwent allo-HCT while in first remission as consolidation treatment. Thirty-three patients with newly diagnosed MM who underwent allo-HCT as part of consolidation therapy between 1994 and 2016 were reviewed retrospectively. Of these patients, 70% underwent autologous HCT before allo-HCT. All patients were chemosensitive and achieved at least partial response before proceeding to allo-HCT. Most received nonmyeloablative/reduced-intensity conditioning (88%) and a matched sibling donor graft (85%). Acute graft-versus-host disease (GVHD) and chronic GVHD occurred in 30% and 61% of patients, respectively. The median duration of follow-up was 64.1 months (range, 1.4 to 199.2 months) for all patients and 164.4 months (range, 56.0 to 199.2 months) for survivors. The median progression-free survival (PFS) was 36 months (95% confidence interval (CI), 8.6 to 73.0 months). The median time from treatment to progression was 73.0 months (95% CI, 30.6 months to not reached). The median overall survival (OS) was 131.9 months (95% CI, 38.4 months to not reached). Of all patients, 39% were alive for more than 10 years, with 46% (n = 6) without progression or relapse. The cumulative incidence of relapse was 18% at 1 year, 39% at 5 years, and 46% at 10 years post-allo-HCT. The cumulative incidence of nonrelapse mortality was 3% at 100 days, 18% at 1 year, 21% at 3 years, and 24% at 5 year post-allo-HCT. On multivariable analysis, high-risk cytogenetics were associated with a shorter PFS (hazard ratio [HR], 2.7; 95% CI, 1.01 to 7.21; P = .047) and OS (HR, 4.91; 95% CI, 1.48 to 16.27; P = .009). Achieving complete remission after allo-HCT also was associated with longer PFS (HR, 0.24; 95% CI, 0.09 to 0.64; P = .004) and OS (HR, .23; 95% CI, .07 to .72; P = .012). Allo-HCT may confer a survival advantage in a selected population of MM patients when performed early in the disease course; additional data on identifying the patients who will benefit the most are needed.
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Affiliation(s)
- Aimaz Afrough
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Leonard C Alsfeld
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Denái R Milton
- Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ruby Delgado
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Uday R Popat
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yago Nieto
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Partow Kebriaei
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Betul Oran
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Neeraj Saini
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Samer Srour
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Chitra Hosing
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Faisal H Cheema
- The University of Houston College of Medicine, Houston, Texas
| | - Sairah Ahmed
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Elisabet E Manasanch
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Hans C Lee
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gregory P Kaufman
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Krina K Patel
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Donna M Weber
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Robert Z Orlowski
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Chelsea C Pinnix
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bouthaina S Dabaja
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sheeba K Thomas
- Department of Lymphoma/Myeloma, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Richard E Champlin
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Elizabeth J Shpall
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Muzaffar H Qazilbash
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Qaiser Bashir
- Department of Stem Cell Transplantation & Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, Texas.
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Current Role of Allogeneic Stem Cell Transplantation in Multiple Myeloma. Oncol Ther 2022; 10:105-122. [PMID: 35377068 PMCID: PMC9098709 DOI: 10.1007/s40487-022-00195-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/10/2022] [Indexed: 11/01/2022] Open
Abstract
Major progress in the treatment of multiple myeloma has been made in the last several years. However, myeloma remains incurable and patients with high-risk cytogenetics or advanced stage disease have an even worsen survival. Only allogeneic transplantation may have curative potential in some patients. However, the high non-relapse mortality and incidence of chronic graft-versus-host disease have raised controversy regarding this procedure. In this review, we will address the role of upfront and delayed allogeneic transplant.
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Gahrton G, Iacobelli S, Garderet L, Yakoub-Agha I, Schönland S. Allogeneic Transplantation in Multiple Myeloma-Does It Still Have a Place? J Clin Med 2020; 9:E2180. [PMID: 32664274 PMCID: PMC7408931 DOI: 10.3390/jcm9072180] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 06/30/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023] Open
Abstract
Novel drugs have improved survival for patients with multiple myeloma in recent years. However, the disease is still fatal. Allogeneic stem cell transplantation (Allo) has proven to cure some patients with the disease, but its role is controversial due to relatively high transplant-related toxicity and mortality (nonrelapse mortality, NRM). Using nonmyeloablative reduced-intensity conditioning (RIC), both toxicity and NRM can be reduced, and RICAllo is, therefore, an option for subgroups of patients. Upfront tandem autologous/RICAllo (Auto/RICAllo) was shown to be superior to single Auto or tandem Auto/Auto in both progression-free (PFS) and overall survival (OS) in two prospective studies with long-term follow-up, while three similarly designed studies did not detect a difference. A recent update of pooled patient data from four of these studies showed significantly superior PFS and OS with Auto/RICAllo. Importantly, none of these studies showed inferior results with Auto/RICAllo in patients less than 70 years of age. Auto/RICAllo appears to overcome some poor risk cytogenetic markers. Encouraging results have also been seen in treatment of relapsed patients. Combining Allo with new proteasome inhibitors and immunomodulatory drugs may further improve results. Other encouraging new cell therapies such as with CAR T-cells, NK- and CAR NK-cells may well have a place in combination with RICAllo. Such studies are warranted.
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Affiliation(s)
- Gösta Gahrton
- Department of Medicine, Karolinska Institutet, Huddinge, SE 14186 Stockholm, Sweden
| | - Simona Iacobelli
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy;
| | - Laurent Garderet
- Department of Hematology and Cellular Therapy, Hospital Hospital-Pitié Salpêtrière, 75013 Paris, France;
| | - Ibrahim Yakoub-Agha
- CHU de Lille, Université de Lille, INSERM U1286, Infinite, 59000 Lille, France;
| | - Stefan Schönland
- Department of Internal Medicine V, University of Heidelberg, 69120 Heidelberg, Germany;
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Eisfeld C, Eßeling E, Wullenkord R, Khandanpour C, Reusch J, Mikesch JH, Reicherts C, Kerkhoff A, Schliemann C, Kessler T, Mesters RM, Berdel WE, Lenz G, Stelljes M. Long-term survival and polyclonal immunoglobulin reconstitution after allogeneic stem cell transplantation in multiple myeloma. Ann Hematol 2020; 99:1907-1915. [PMID: 32444892 PMCID: PMC7340674 DOI: 10.1007/s00277-020-04068-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/28/2020] [Indexed: 01/19/2023]
Abstract
Despite significant progress made in the treatment of patients with multiple myeloma (MM) in the last decade, for patients with early relapse or rapidly progressing high-risk disease, allogeneic hematopoietic stem cell transplantation (SCT) might be an option leading to long-term survival. Here, we retrospectively analyzed the outcomes of 90 MM patients who received allogeneic SCT in our center between 1999 and 2017. We specifically assessed the association of impaired humoral immune reconstitution, referred to as immunoparesis, and post-transplant survival. Sixty-four patients received allogeneic SCT in relapse following 2–7 lines of therapy; 26 patients received upfront tandem autologous-allogeneic SCT. With a median follow-up of 76 months, OS and PFS were 52.6% (95% CI 42.9–64.3) and 36.4% (95% CI 27.6–47.9) at 2 years and 38.6% (95% CI 29.2–51.1) and 25.3% (95% CI 17.5–36.4) at 5 years, respectively. Receiving more than two therapy lines prior to transplantation was an independent risk factor for OS (HR 3.68, 95% CI 2.02–6.70) and PFS (HR 3.69, 95% CI 2.09–6.50). In a landmark analysis at day 200, prolonged immunoparesis was associated with reduced OS (HR 3.22, 95% CI 1.14–9.11). Allogeneic stem cell transplantation offers an additional treatment element that may lead to long-term remission in selected patients with poor prognosis, probably exploiting graft-versus-myeloma effects. Immunoparesis could potentially serve as an indicator for impaired survival following allogeneic transplantation, an observation to be further studied prospectively.
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Affiliation(s)
- Christine Eisfeld
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Eva Eßeling
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Ramona Wullenkord
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Cyrus Khandanpour
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Julia Reusch
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | | | | | - Andrea Kerkhoff
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | | | - Torsten Kessler
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Rolf M Mesters
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Wolfgang E Berdel
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Georg Lenz
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Matthias Stelljes
- Department of Medicine A, University Hospital Münster, Münster, Germany.
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Allogeneic transplantation in multiple myeloma: long-term follow-up and cytogenetic subgroup analysis. Leukemia 2019; 33:2710-2719. [DOI: 10.1038/s41375-019-0537-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 05/29/2019] [Indexed: 12/16/2022]
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6
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Franssen LE, Mutis T, Lokhorst HM, van de Donk NWCJ. Immunotherapy in myeloma: how far have we come? Ther Adv Hematol 2019; 10:2040620718822660. [PMID: 30719268 PMCID: PMC6348514 DOI: 10.1177/2040620718822660] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/06/2018] [Indexed: 12/31/2022] Open
Abstract
The treatment of multiple myeloma (MM) has evolved substantially over the past decades, leading to a significantly improved outcome of MM patients. The introduction of high-dose therapy, especially, and autologous stem cell transplantation, as well as the development of new drugs, such as immunomodulatory drugs (IMiDs) and proteasome inhibitors have contributed to the improvement in survival. However, eventually most MM patients relapse, which indicates that there is a need for new agents and novel treatment strategies. Importantly, the long-term survival in a subset of MM patients after allogeneic stem cell transplantation illustrates the potential of immunotherapy in MM, but allogeneic stem cell transplantation is also associated with a high rate of treatment-related mortality. Recently, a better insight into several immune-evasion mechanisms, which contribute to tumor progression, has resulted in the development of active and well-tolerated novel forms of immunotherapy. These immunotherapeutic agents can be used as monotherapy, or, even more successfully, in combination with other established anti-MM agents to further improve depth and duration of response by preventing the outgrowth of resistant clones. This review will discuss the mechanisms used by MM cells to evade the immune system, and also provide an overview of currently approved immunotherapeutic drugs, such as IMiDs (e.g. lenalidomide and pomalidomide) and monoclonal antibodies that target cell surface antigens present on the MM cell (e.g. elotuzumab and daratumumab), as well as novel immunotherapies (e.g. chimeric antigen receptor T-cells, bispecific antibodies and checkpoint inhibitors) currently in clinical development in MM.
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Affiliation(s)
- Laurens E Franssen
- Department of Hematology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Tuna Mutis
- Department of Hematology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Henk M Lokhorst
- Department of Hematology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Niels W C J van de Donk
- Department of Hematology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
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Lehners N, Hayden PJ, Goldschmidt H, Raab MS. Management of high-risk Myeloma: an evidence-based review of treatment strategies. Expert Rev Hematol 2016; 9:753-65. [PMID: 27337562 DOI: 10.1080/17474086.2016.1204908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Despite the progress made in the treatment of patients with multiple myeloma over recent decades, a significant cohort with high-risk disease as defined by specific clinical and genetic criteria continue to respond poorly to standard treatment. These patients represent a particular challenge to the treating physician and require early identification as well as personalized treatment strategies. AREAS COVERED In this review, we discuss the prognostic impact of adverse clinical, radiological and genetic factors, evaluate available scoring systems and highlight key aspects of the therapeutic management of high-risk myeloma. MEDLINE and recent scientific meetings' databases were searched for the keywords 'high-risk' and 'multiple myeloma' and relevant studies relating to both diagnostic and therapeutic approaches were identified. Expert commentary: A case is made for intensive induction using combinations of novel agents, early high-dose therapy supported by autologous stem cell transplantation and the widespread use of maintenance therapies. Novel therapeutic options, especially in the field of immunotherapy, are currently explored in clinical trials and have the potential to further improve outcomes for patients with high-risk multiple myeloma.
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Affiliation(s)
- Nicola Lehners
- a Department of Hematology , University Hospital of Heidelberg , Heidelberg , Germany
| | - Patrick J Hayden
- b Academic Department of Haematology , St. James's Hospital, Trinity College Dublin, College Green , Dublin 2 , Ireland
| | - Hartmut Goldschmidt
- a Department of Hematology , University Hospital of Heidelberg , Heidelberg , Germany
| | - Marc-Steffen Raab
- a Department of Hematology , University Hospital of Heidelberg , Heidelberg , Germany
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8
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Paviglianiti A, Xavier E, Ruggeri A, Ceballos P, Deconinck E, Cornelissen JJ, Nguyen-Quoc S, Maillard N, Sanz G, Rohrlich PS, Garderet L, Volt F, Rocha V, Kroeger N, Gluckman E, Fegueux N, Mohty M. Outcomes of unrelated cord blood transplantation in patients with multiple myeloma: a survey on behalf of Eurocord, the Cord Blood Committee of Cellular Therapy and Immunobiology Working Party, and the Chronic Leukemia Working Party of the EBMT. Haematologica 2016; 101:1120-7. [PMID: 27229716 DOI: 10.3324/haematol.2015.138917] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 05/24/2016] [Indexed: 12/11/2022] Open
Abstract
Although allogeneic stem cell transplantation is not a standard therapy for multiple myeloma, some patients can benefit from this intense therapy. There are few reports on outcomes after umbilical cord blood transplantation in multiple myeloma, and investigation of this procedure is warranted. We retrospectively analyzed 95 patients, 85 with multiple myeloma and 10 with plasma cell leukemia, receiving single or double umbilical cord blood transplantation from 2001 to 2013. Median follow up was 41 months. The majority of patients received a reduced intensity conditioning. The cumulative incidence of neutrophil engraftment was 97%±3% at 60 days, and that of 100-day acute graft-versus-host disease grade II-IV was 41%±5%. Chronic graft-versus-host disease at two years was 22%±4%. Relapse and non-relapse mortality was 47%±5% and 29%±5% at three years, respectively. Three-year progression-free survival and overall survival were 24%±5% and 40%±5%, respectively. Anti-thymocyte globulin was associated with decreased incidence of acute graft-versus-host disease, higher non-relapse mortality, decreased overall and progression-free survival. Patients with high cytogenetic risk had higher relapse, and worse overall and progression-free survival. In conclusion, umbilical cord blood transplantation is feasible for multiple myeloma patients.
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Affiliation(s)
- Annalisa Paviglianiti
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France
| | - Erick Xavier
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France
| | - Annalisa Ruggeri
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France Service d'Hématologie et Thérapie Cellulaire, Hôpital Saint Antoine, AP-HP, Paris, France
| | - Patrice Ceballos
- Département d'Hématologie Clinique, CHU Lapeyronie, Montpellier, France
| | | | - Jan J Cornelissen
- Department of Hematology, Erasmus MC-Daniel den Hoed Cancer Centre, Rotterdam, the Netherlands
| | - Stephanie Nguyen-Quoc
- Department Hematology, University Paris IV, Hôpital la Pitié-Salpêtrière, Paris, France
| | - Natacha Maillard
- Bone Marrow Transplant Unit Clinical Hematology, Hôpital La Miletrie, Poitiers, France
| | - Guillermo Sanz
- Servicio de Hematologia, Hospital Universitario y Politecnico La Fe, Valencia, Spain
| | | | - Laurent Garderet
- Service d'Hématologie et Thérapie Cellulaire, Hôpital Saint Antoine, AP-HP, Paris, France
| | - Fernanda Volt
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France
| | - Vanderson Rocha
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France Department Hematology, Churchill Hospital, Oxford, UK
| | - Nicolaus Kroeger
- Dept. Stem Cell Transplantation, University Hospital of Hamburg, Germany
| | - Eliane Gluckman
- Eurocord, APHP, University Paris Diderot, Hôpital Saint Louis, Paris, France Monacord, Centre Scientifique de Monaco, France
| | - Nathalie Fegueux
- Département d'Hématologie Clinique, CHU Lapeyronie, Montpellier, France
| | - Mohamad Mohty
- Service d'Hématologie et Thérapie Cellulaire, Hôpital Saint Antoine, AP-HP, Paris, France INSERM, UMRs 938, Paris, France
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9
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Franssen LE, Raymakers RAP, Buijs A, Schmitz MF, van Dorp S, Mutis T, Lokhorst HM, van de Donk NWCJ. Outcome of allogeneic transplantation in newly diagnosed and relapsed/refractory multiple myeloma: long-term follow-up in a single institution. Eur J Haematol 2016; 97:479-488. [DOI: 10.1111/ejh.12758] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Laurens E. Franssen
- Department of Hematology; University Medical Center Utrecht; Utrecht the Netherlands
- Department of Hematology; VU University Medical Center; Amsterdam the Netherlands
| | | | - Arjan Buijs
- Department of Genetics; University Medical Center Utrecht; Utrecht the Netherlands
| | - Marian F. Schmitz
- Department of Hematology; University Medical Center Utrecht; Utrecht the Netherlands
| | - Suzanne van Dorp
- Department of Hematology; Radboud University Medical Center; Nijmegen the Netherlands
| | - Tuna Mutis
- Department of Hematology; VU University Medical Center; Amsterdam the Netherlands
| | - Henk M. Lokhorst
- Department of Hematology; University Medical Center Utrecht; Utrecht the Netherlands
- Department of Hematology; VU University Medical Center; Amsterdam the Netherlands
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