1
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Liu Z, Shen H, Han M, Zhao X, Liu H, Ding K, Song J, Fu R. Immune profiles to predict bortezomib-based treatment response for multiple myeloma patients. Int Immunopharmacol 2024; 130:111640. [PMID: 38377849 DOI: 10.1016/j.intimp.2024.111640] [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: 11/10/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND To evaluate the distribution of bone marrow immune cell subsets and their correlation with treatment efficacy in patients with multiple myeloma (MM). METHODS We analyzed the bone marrow lymphocyte subsets of 186 newly diagnosed MM patients at diagnosis and their correlation with clinical characteristics. In our study, eight-color flow cytometry, a method commonly used to detect plasma cell phenotypes, was used to analyze seven bone marrow immune cell groups by change gate-strategy. RESULTS First, for all the 7 immune cell groups, the percentage of immature B cells was significantly lower in stage III patients than in stage I patients, while the trend was reversed in memory B cells in both the International Staging System(p = 0.004) and Revised International Staging System(p = 0.018). Second, the percentage of naïve B cells were significantly lower in patients with severe anemia, while the percentage of memory B cells had reversed trend. The percentage of immature B cells were lower in patients with Cr ≥ 2 mg/dL than in patients with Cr < 2 mg/dL. Then we followed the treatment efficacy of 152 patients who received four cycles of induction therapy (bortezomib + dexamethasone or bortezomib + lenalidomide + dexamethasone) and analyzed the relationship between bone marrow lymphocyte subsets at the initial stage and treatment response datasets. We found that both the percentage of B cells(p<0.001) and immature B(p = 0.002) were increased in patients who achieved very good partial remission(VGPR) after four cycles of induction therapy. The ROC results indicated the combination of the multiple immune subgroups had predictive values (AUC = 0.802, p<0.001) in the treatment effect after four cycles of induction therapy. CONCLUSIONS Overall, these results suggest that the analysis of lymphocyte subsets along with plasma cell immunophenotyping could be a potential index for determining the prognosis of MM patients.
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Affiliation(s)
- Zhaoyun Liu
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China.
| | - Hongli Shen
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Mei Han
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Xianghong Zhao
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Hui Liu
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Kai Ding
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Jia Song
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan Street, Heping District, Tianjin 300052, PR China; Tianjin Key Laboratory of Bone Marrow Failure and Malignant Hemopoietic Clone Control, Tianjin 300052 P. R. China.
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Wang YF, Li JL, Lee CC, Wallace PK, Ko BS. Using Artificial Intelligence to Interpret Clinical Flow Cytometry Datasets for Automated Disease Diagnosis and/or Monitoring. Methods Mol Biol 2024; 2779:353-367. [PMID: 38526794 DOI: 10.1007/978-1-0716-3738-8_16] [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] [Indexed: 03/27/2024]
Abstract
Flow cytometry (FC) is routinely used for hematological disease diagnosis and monitoring. Advancement in this technology allows us to measure an increasing number of markers simultaneously, generating complex high-dimensional datasets. However, current analytic software and methods rely on experienced analysts to perform labor-intensive manual inspection and interpretation on a series of 2-dimensional plots via a complex, sequential gating process. With an aggravating shortage of professionals and growing demands, it is very challenging to provide the FC analysis results in a fast, accurate, and reproducible way. Artificial intelligence has been widely used in many sectors to develop automated detection or classification tools. Here we describe a type of machine learning method for developing automated disease classification and residual disease monitoring on clinical flow datasets.
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Affiliation(s)
- Yu-Fen Wang
- AHEAD Medicine Corporation, San Jose, CA, USA.
- AHEAD Intelligence Ltd, Taipei, Taiwan.
| | - Jeng-Lin Li
- Department of Electrical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan
| | - Chi-Chun Lee
- Department of Electrical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan
| | - Paul K Wallace
- Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Bor-Sheng Ko
- AHEAD Medicine Corporation, San Jose, CA, USA
- AHEAD Intelligence Ltd, Taipei, Taiwan
- Department of Hematological Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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3
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Holstein SA, Asimakopoulos F, Azab AK, Bianchi G, Bhutani M, Crews LA, Cupedo T, Giles H, Gooding S, Hillengass J, John L, Kaiser S, Lee L, Maclachlan K, Pasquini MC, Pichiorri F, Shah N, Shokeen M, Shy BR, Smith EL, Verona R, Usmani SZ, McCarthy PL. Proceedings from the Blood and Marrow Transplant Clinical Trials Network Myeloma Intergroup Workshop on Immune and Cellular Therapy in Multiple Myeloma. Transplant Cell Ther 2022; 28:446-454. [PMID: 35605882 PMCID: PMC9357156 DOI: 10.1016/j.jtct.2022.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 11/30/2022]
Abstract
The Blood and Marrow Transplant Clinical Trials Network (BMT CTN) Myeloma Intergroup conducted a workshop on Immune and Cellular Therapy in Multiple Myeloma on January 7, 2022. This workshop included presentations by basic, translational, and clinical researchers with expertise in plasma cell dyscrasias. Four main topics were discussed: platforms for myeloma disease evaluation, insights into pathophysiology, therapeutic target and resistance mechanisms, and cellular therapy for multiple myeloma. Here we provide a comprehensive summary of these workshop presentations.
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Affiliation(s)
| | - Fotis Asimakopoulos
- Moores Cancer Center, University of California San Diego, La Jolla, California
| | | | - Giada Bianchi
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Leslie A Crews
- Moores Cancer Center, University of California San Diego, La Jolla, California
| | - Tom Cupedo
- ErasmusMC Cancer Institute Rotterdam, Rotterdam, The Netherlands
| | - Hannah Giles
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Sarah Gooding
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | | | - Lukas John
- University Hospital Heidelberg, Heidelberg, Germany
| | | | - Lydia Lee
- University College London, London, United Kingdom
| | | | | | - Flavia Pichiorri
- Judy and Bernard Briskin Center for Multiple Myeloma Research, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, California
| | - Nina Shah
- University of California San Francisco, San Francisco, California
| | - Monica Shokeen
- Washington University School of Medicine, St. Louis, Missouri
| | - Brian R Shy
- University of California San Francisco, San Francisco, California
| | - Eric L Smith
- Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Raluca Verona
- Janssen Research & Development, Spring House, Pennsylvania
| | - Saad Z Usmani
- Memorial Sloan Kettering Cancer Center, New York, New York
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4
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Charalampous C, Kourelis T. Minimal Residual Disease Assessment in Multiple Myeloma Patients: Minimal Disease With Maximal Implications. Front Oncol 2022; 11:801851. [PMID: 35155198 PMCID: PMC8825476 DOI: 10.3389/fonc.2021.801851] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/29/2021] [Indexed: 11/21/2022] Open
Abstract
Multiple Myeloma (MM), the second most common hematologic malignancy, has been the target of many therapeutic advances over the past two decades. The introduction of novel agents, such as proteasome inhibitors, immunomodulatory drugs, and monoclonal antibodies, along with autologous hematopoietic stem cell transplantation (ASCT) in the current standard of care, has increased the median survival of myeloma patients significantly. Nevertheless, a curative treatment option continues to elude us, and MM remains an incurable disease, with patients relapsing even after achieving deep conventionally defined responses, underscoring the need for the development of sensitive methods that will allow for proper identification and management of the patients with a higher probability of relapse. Accurate detection of Minimal Residual Disease (MRD) from a bone marrow biopsy represents a relatively new approach of evaluating response to treatment with data showing clear benefit from obtaining MRD(-) status at any point of the disease course. As life expectancy for patients with MM continues to increase and deep responses are starting to become the norm, establishing and refining the role of MRD in the disease course is more relevant than ever. This review examines the different methods used to detect MRD and discusses future considerations regarding the implementation in day-to-day clinical practice and as a prospective primary endpoint for clinical trials.
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5
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Holstein SA, Bahlis N, Bergsagel PL, Bhutani M, Bolli N, Brownstein C, Demolis P, Foureau D, Gay F, Ghobrial IM, Gormley N, Hillengass J, Kaiser M, Maus MV, Melenhorst JJ, Merz M, Dwyer MO, Paiva B, Pasquini MC, Shah N, Wong SW, Usmani SZ, McCarthy PL. The 2020 BMT CTN Myeloma Intergroup Workshop on Immune Profiling and Minimal Residual Disease Testing in Multiple Myeloma. Transplant Cell Ther 2021; 27:807-816. [PMID: 34107340 PMCID: PMC8478786 DOI: 10.1016/j.jtct.2021.05.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/27/2021] [Accepted: 05/31/2021] [Indexed: 01/17/2023]
Abstract
The fifth annual Blood and Marrow Transplant Clinical Trials Network Myeloma Intergroup Workshop on Immune Profiling and Minimal Residual Disease Testing in Multiple Myeloma was conducted as one of the American Society of Hematology Annual Meeting Scientific Workshops on Thursday December 3, 2020. This workshop focused on four main topics: (1) integrating minimal residual disease into clinical trial design and practice; (2) the molecular and immunobiology of disease evolution and progression in myeloma; (3) adaptation of next-generation sequencing, next-generation flow cytometry, and cytometry by time of flight techniques; and (4) chimeric antigen receptor T-cell and other cellular therapies for myeloma. In this report, we provide a summary of the workshop presentations and discuss future directions in the field.
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Affiliation(s)
| | - Nizar Bahlis
- University of Calgary, Arnie Charbonneau Cancer Research Institute, Calgary, Alberta, Canada
| | | | | | - Niccolo Bolli
- Department of Oncology and Hemato-Oncology, University of Milan, and Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | | | | | - Francesca Gay
- University of Torino, Divisione di Ematologia 1, Myeloma Unit, Azienda Ospedaliera Citta della Salute e della Scienza, Torino, Italy
| | - Irene M Ghobrial
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Nicole Gormley
- U.S. Food and Drug Administration, Silver Spring, Maryland
| | | | - Martin Kaiser
- Institute of Cancer Research, London, United Kingdom
| | | | | | - Maximilian Merz
- Roswell Park Comprehensive Cancer Center, Buffalo, New York; Department of Medicine II, University Clinic Leipzig, Germany
| | | | - Bruno Paiva
- Clinica Universidad de Navarra, Centro de Investigacion Medica Aplicada (CIMA), Instituto de Investigacion Sanitaria de Navarra (IDISNA), CIBER-ONC number CB16/12/00369, Pamplona, Spain
| | | | - Nina Shah
- University of California San Francisco, San Francisco, California
| | - Sandy W Wong
- University of California San Francisco, San Francisco, California
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6
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Zhaoyun L, Rong F. Predictive Role of Immune Profiling for Survival of Multiple Myeloma Patients. Front Immunol 2021; 12:663748. [PMID: 34290698 PMCID: PMC8287504 DOI: 10.3389/fimmu.2021.663748] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/23/2021] [Indexed: 01/10/2023] Open
Abstract
Despite new efficacy drugs and cell therapy have been used for multiple myeloma (MM) patients, some patients will relapse over time. We wonder the immune system play a vital role as well as MM cell during the development of disease. It is clear that the characteristic of myeloma cell is associated with the survival of MM patients. However, the link between the immune profiling and the prognosis of the disease is still not entirely clear. As more study focus on the role of immunity on multiple myeloma pathogenesis. There are plenty of study about the predictive role of immunity on the survival of multiple myeloma patients. Up to mow, the majority reviews published have focused on the immunotherapy and immune pathogenesis. It is indispensable to overlook the predictive role of immunity on multiple myeloma patients. Here, we give a review of vital previous works and recent progress related to the predictive role of immune profiling on multiple myeloma, such as absolute lymphocyte count, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, lymphocytes and cytokines.
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Affiliation(s)
- Liu Zhaoyun
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Fu Rong
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
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7
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A large meta-analysis establishes the role of MRD negativity in long-term survival outcomes in patients with multiple myeloma. Blood Adv 2021; 4:5988-5999. [PMID: 33284948 DOI: 10.1182/bloodadvances.2020002827] [Citation(s) in RCA: 196] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/10/2020] [Indexed: 12/19/2022] Open
Abstract
The prognostic value of minimal residual disease (MRD) for progression-free survival (PFS) and overall survival (OS) was evaluated in a large cohort of patients with multiple myeloma (MM) using a systematic literature review and meta-analysis. Medline and EMBASE databases were searched for articles published up to 8 June 2019, with no date limit on the indexed database. Clinical end points stratified by MRD status (positive or negative) were extracted, including hazard ratios (HRs) on PFS and OS, P values, and confidence intervals (CIs). HRs were estimated based on reconstructed patient-level data from published Kaplan-Meier curves. Forty-four eligible studies with PFS data from 8098 patients, and 23 studies with OS data from 4297 patients were identified to assess the association between MRD status and survival outcomes. Compared with MRD positivity, achieving MRD negativity improved PFS (HR, 0.33; 95% CI, 0.29-0.37; P < .001) and OS (HR, 0.45; 95% CI, 0.39-0.51; P < .001). MRD negativity was associated with significantly improved survival outcomes regardless of disease setting (newly diagnosed or relapsed/refractory MM), MRD sensitivity thresholds, cytogenetic risk, method of MRD assessment, depth of clinical response at the time of MRD measurement, and MRD assessment premaintenance and 12 months after start of maintenance therapy. The strong prognostic value of MRD negativity and its association with favorable outcomes in various disease and treatment settings sets the stage to adopt MRD as a treatment end point, including development of therapeutic strategies. This large meta-analysis confirms the utility of MRD as a relevant surrogate for PFS and OS in MM.
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8
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Holstein SA, Howard A, Avigan D, Bhutani M, Cohen AD, Costa LJ, Dhodapkar MV, Gay F, Gormley N, Green DJ, Hillengass J, Korde N, Li Z, Mailankody S, Neri P, Parekh S, Pasquini MC, Puig N, Roodman GD, Samur MK, Shah N, Shah UA, Shi Q, Spencer A, Suman VJ, Usmani SZ, McCarthy PL. Summary of the 2019 Blood and Marrow Transplant Clinical Trials Network Myeloma Intergroup Workshop on Minimal Residual Disease and Immune Profiling. Biol Blood Marrow Transplant 2020; 26:e247-e255. [PMID: 32589921 PMCID: PMC7529908 DOI: 10.1016/j.bbmt.2020.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 12/22/2022]
Abstract
The Blood and Marrow Transplant Clinical Trials Network (BMT CTN) Myeloma Intergroup has organized an annual workshop focused on minimal residual disease (MRD) testing and immune profiling (IP) in multiple myeloma since 2016. In 2019, the workshop took place as an American Society of Hematology (ASH) Friday Scientific Workshop titled "Immune Profiling and Minimal Residual Disease Testing in Multiple Myeloma." This workshop focused on 4 main topics: the molecular and immunologic evolution of plasma cell disorders, development of new laboratory- and imaging-based MRD assessment approaches, chimeric antigen receptor T cell therapy research, and statistical and regulatory issues associated with novel clinical endpoints. In this report, we provide a summary of the workshop and discuss future directions.
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Affiliation(s)
| | - Alan Howard
- Center for International Blood and Marrow Transplant Research, Minneapolis, Minnesota
| | - David Avigan
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | - Adam D Cohen
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | - Francesca Gay
- Myeloma Unit, Division of Hematology, University of Torino, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, Torino, Italy
| | - Nicole Gormley
- US Food and Drug Administration, Silver Spring, Maryland
| | - Damian J Green
- Fred Hutchinson Cancer Research Center & Seattle Cancer Care Alliance, Seattle, Washington
| | | | - Neha Korde
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Zihai Li
- The Ohio State University, Columbus, Ohio
| | | | | | - Samir Parekh
- Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Noemi Puig
- Institute for Biomedical Research of Salamanca, University Hospital of Salamanca, Salamanca, Spain
| | - G David Roodman
- Indiana University School of Medicine, Indianapolis, Indiana
| | | | - Nina Shah
- University of California San Francisco, San Francisco, California
| | - Urvi A Shah
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Qian Shi
- Mayo Clinic, Rochester, Minnesota
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9
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Patel DA, Gopalakrishnan R, Engelhardt BG, McArthur E, Sengsayadeth S, Culos KA, Byrne M, Goodman S, Savani BN, Chinratanalab W, Jagasia M, Mosse CA, Cornell RF, Kassim AA. Minimal residual disease negativity and lenalidomide maintenance therapy are associated with superior survival outcomes in multiple myeloma. Bone Marrow Transplant 2020; 55:1137-1146. [PMID: 31992845 DOI: 10.1038/s41409-020-0791-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 12/02/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022]
Abstract
Modern combinations of therapies for multiple myeloma have led to improvement in survival outcomes with near 100% overall response rate and 25% complete response rates, particularly with autologous hematopoietic cell transplant (AHCT). Minimal residual disease (MRD) assessment with multiparameter flow cytometry is a valid prognostic biomarker for progression-free survival (PFS) and overall survival (OS). However, few data exist regarding whether MRD positivity or negativity will meaningfully influence treatment decisions. We evaluated 433 patients who received induction therapy, followed by AHCT. Participants had MRD assessment by multiparameter flow cytometry before and at days +100 and +365 following AHCT. They also received either lenalidomide, bortezomib, or no maintenance therapy following AHCT. Maintenance treatment with lenalidomide improved MRD negativity at day +365 compared to bortezomib (92.9% vs 41.6%, p = 0.01), or no maintenance therapy (92.9% vs 24.4%, p = 0.012). The median PFS for patients who were MRD negative at day + 365 was 42 vs 17.5 months (p < 0.001) and median OS was 80.6 vs 59 months (p = 0.02). Maintenance therapy following AHCT for multiple myeloma improves the depth of response as assessed by MRD.
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Affiliation(s)
- Dilan A Patel
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Ragisha Gopalakrishnan
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Brian G Engelhardt
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Evonne McArthur
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Salyka Sengsayadeth
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Katie A Culos
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pharmaceutical Services, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Michael Byrne
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Stacey Goodman
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Bipin N Savani
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Wichai Chinratanalab
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Madan Jagasia
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Claudio A Mosse
- Department of Pathology, Microbiology, Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Pathology and Laboratory Medicine, VA Tennessee Valley Healthcare System, Nashville, TN, USA
| | - Robert F Cornell
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Adetola A Kassim
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.
- Department of Medicine, Division of Hematology/Oncology, Hematology and Stem Cell Transplant, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.
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10
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Othus M, Gale RP, Hourigan CS, Walter RB. Statistics and measurable residual disease (MRD) testing: uses and abuses in hematopoietic cell transplantation. Bone Marrow Transplant 2020; 55:843-850. [PMID: 31666655 PMCID: PMC7462748 DOI: 10.1038/s41409-019-0729-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 10/09/2019] [Accepted: 10/15/2019] [Indexed: 12/23/2022]
Abstract
SERIES EDITORS' NOTE The decision whether to recommend a transplant to someone with acute leukemia in first remission is complex and challenging. Diverse, often confounded co-variates interact to influence one's recommendation. Briefly, the decision metric can be viewed in three spheres: (1) subject-; (2) transplant-; and (3) disease-related co-variates. Subject-related co-variates include items such as age and comorbidities. Transplant-related co-variates include items such as donor-types, graft source, proposed conditioning and pre- and post-transplant immune suppression.But what of disease-related variables? Previously haematologists relied on co-variates such as WBC at diagnosis, chemotherapy cycles to achieve first remission, cytogenetics and most recently, mutation topography. However, these co-variates have largely been replaced by results of measurable residual disease (MRD)-testing. Many chemotherapy-only and transplant studies report strong correlations between results of MRD-testing on therapy outcomes such as cumulative incidence of relapse (CIR), leukemia-free survival (LFS) or survival. (CIR makes biological sense in a transplant context whereas LFS and survival do not give competing causes of death such as transplant-related mortality (TRM), graft-versus-host disease and interstitial pneumonia unrelated to relapse probability).This raises the question of how useful results are of MRD-testing in predicting CIR after transplants. Elsewhere we discussed accuracy and precision of MRD-testing in predicting outcomes of therapy of acute myeloid leukemia (Estey E, Gale RP. Leukemia 31:1255-1258, 2017; Hourigan CS, Gale RP, Gormley NJ, Ossenkoppele GJ, Walter RB. Leukemia 31:1482-1490, 2017). Briefly put, not terribly good. Although results of MRD-testing are often the most powerful predictor of CIR in multivariable analyses, the C-statistic (a measure of prediction accuracy) is often only about 0.75. This is much better than flipping a fair coin but far from ideal.In the typescript which follows, Othus and colleagues discuss statistical issues underlying MRD-testing in the context of haematopoietic cell transplants. We hope readers, especially haematologists who often need to make transplant recommendations to people with acute leukemia in first remission, will read it carefully and critically. The bottom line is MRD-test data are useful but considerable uncertainty is unavoidable with substantial false-positive and -negative rates. We need to acknowledge this uncertainty to ourselves and to the people we counsel. The authors quote Voltaire who said: Doubt is not a pleasant condition, but certainty is an absurd one. Sadly so, but we do the best we can. Robert Peter Gale, Imperial College London, and Mei-Jie Zhang, Medical College of Wisconsin and CIBMTR.
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Affiliation(s)
- Megan Othus
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Robert Peter Gale
- Haematology Research Centre, Division of Experimental Medicine, Department of Medicine, Imperial College London, London, UK
| | - Christopher S Hourigan
- Myeloid Malignancies Section, Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Roland B Walter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
- Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA.
- Department of Pathology, University of Washington, Seattle, WA, USA.
- Department of Epidemiology, University of Washington, Seattle, WA, USA.
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11
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Holstein SA, Suman VJ, Owzar K, Santo K, Benson DM, Shea TC, Martin T, Silverman M, Isola L, Vij R, Cheson BD, Linker C, Anderson KC, Richardson PG, McCarthy PL. Long-Term Follow-up of CALGB (Alliance) 100001: Autologous Followed by Nonmyeloablative Allogeneic Transplant for Multiple Myeloma. Biol Blood Marrow Transplant 2020; 26:1414-1424. [PMID: 32325171 DOI: 10.1016/j.bbmt.2020.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 03/25/2020] [Accepted: 03/31/2020] [Indexed: 11/18/2022]
Abstract
CALGB (Alliance) 100001 was a phase II study evaluating autologous stem cell transplant (ASCT) followed by nonmyeloablative allogeneic stem cell transplant (alloSCT) in patients with multiple myeloma who had received no more than 18 months of prior therapy and had experienced no more than 1 prior progression event. Conditioning for ASCT was with high-dose melphalan (200 mg/m2). The alloSCT reduced-intensity conditioning (RIC) regimen consisted of fludarabine (30 mg/m2/d i.v. on days -7 through -3) and cyclophosphamide (1 g/m2/d i.v. on days -4 through -3). The primary objective was to determine the 6-month post-alloSCT treatment-related mortality (TRM) rate. Additional objectives included determining the proportion of patients who could complete this tandem ASCT-alloSCT approach in a cooperative group setting, overall response rates, rates of donor chimerism, rates of graft-versus-host disease (GVHD), disease-free survival, and overall survival (OS). Sixty patients were enrolled, of whom 57 (95%) completed ASCT and 49 (82%) completed tandem ASCT-alloSCT. The TRM rate was 2% (1/49; 90% confidence interval, 0.10% to 9.3%). Moderate to severe (grades 2 to 3) acute GVHD was observed in 13 of 49 alloSCT patients (27%). One patient died due to GVHD within 9 months of alloSCT. Twenty-seven of the 49 patients (55%) who underwent alloSCT reported chronic GVHD as either limited (15/49; 31%) or extensive (12/49; 24%) in the first year post-alloSCT and prior to the start of nonprotocol therapy for progressive disease. With a median follow-up for survival of 11 years, the median OS time is 6.6 years and the median time to disease progression is 3.6 years. Similar to other studies, this study confirmed that tandem ASCT/alloSCT is associated with durable disease control in a subset of patients. This study demonstrated the feasibility of performing tandem ASCT/alloSCT in a cooperative group setting and determined that a fludarabine/cyclophosphamide RIC regimen is associated with a very low TRM rate.
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Affiliation(s)
| | - Vera J Suman
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
| | - Kouros Owzar
- Biostatistics and Bioinformatics, Duke Cancer Institute, Duke University, Durham, North Carolina
| | - Katelyn Santo
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
| | - Don M Benson
- The Ohio State University Comprehensive Cancer Center, Columbus, Ohio
| | - Thomas C Shea
- UNC Lineberger Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Thomas Martin
- University of California at San Francisco, San Francisco, California
| | | | - Luis Isola
- Mount Sinai School of Medicine, New York, New York
| | - Ravi Vij
- Washington University School of Medicine, St. Louis, Missouri
| | | | - Charles Linker
- University of California at San Francisco, San Francisco, California
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12
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Kothari S, Hillengass J, McCarthy PL, Holstein SA. Determination of Minimal Residual Disease in Multiple Myeloma: Does It Matter? Curr Hematol Malig Rep 2020; 14:39-46. [PMID: 30671912 DOI: 10.1007/s11899-019-0497-7] [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: 12/20/2022]
Abstract
PURPOSE OF REVIEW The ability to detect minimal residual disease (MRD) in myeloma has improved due to advances in flow cytometry and sequencing methodologies. Here, we evaluate recent clinical trial data and explore the current and future roles of MRD assessment in the context of clinical trial design and clinical practice. RECENT FINDINGS A review of recent phase III studies reveals that achievement of MRD negativity is associated with improved progression-free survival (PFS) and/or overall survival (OS). Treatment arms that are more effective from a PFS or overall response rate perspective are also associated with superior MRD negativity rates. The current standard MRD methodologies are limited by requiring bone marrow samples and refinement of methodologies that can detect disease outside of the bone marrow is needed. Currently, MRD is a prognostic biomarker and further efforts are required to determine whether it can serve as a surrogate endpoint. The use of MRD status to guide treatment decisions is currently not recommended outside the confines of a clinical trial.
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Affiliation(s)
- Shalin Kothari
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Jens Hillengass
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Philip L McCarthy
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Sarah A Holstein
- Department of Internal Medicine, University of Nebraska Medical Center, 986840 Nebraska Medical Center, Omaha, NE, 68198, USA.
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13
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Morè S, Corvatta L, Maracci L, Costantini B, Olivieri A, Offidani M. Developments in consolidation and maintenance strategies in post-remission multiple myeloma. Expert Rev Hematol 2020; 13:351-362. [DOI: 10.1080/17474086.2020.1739517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sonia Morè
- Clinica di Ematologia Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, Ancona, Italy
| | - Laura Corvatta
- Department of Medicine, UOC Medicina Fabriano, Ancona, Italy
| | - Laura Maracci
- Clinica di Ematologia Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, Ancona, Italy
| | - Benedetta Costantini
- Clinica di Ematologia Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, Ancona, Italy
| | - Attilio Olivieri
- Clinica di Ematologia Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, Ancona, Italy
| | - Massimo Offidani
- Clinica di Ematologia Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, Ancona, Italy
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14
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Jacoby E, Shahani SA, Shah NN. Updates on CAR T-cell therapy in B-cell malignancies. Immunol Rev 2020; 290:39-59. [PMID: 31355492 DOI: 10.1111/imr.12774] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/09/2019] [Indexed: 12/22/2022]
Abstract
By increasing disease-free survival and offering the potential for long-term cure, chimeric antigen receptor (CAR) T-cell therapy has dramatically expanded therapeutic options among those with high-risk B-cell malignancies. As CAR T-cell utilization evolves however, novel challenges are generated. These include determining how to optimally integrate CAR T cells into standard of care and overcoming mechanisms of resistance to CAR T-cell therapy, such as evolutionary stress induced on cancer cells leading to immunophenotypic changes that allow leukemia to evade this targeted therapy. Compounding these challenges are the limited ability to determine differences between various CAR T-cell constructs, understanding the generalizability of trial outcomes from multiple sites utilizing unique CAR manufacturing strategies, and comparing distinct criteria for toxicity grading while defining optimal management. Additionally, as understanding of CAR behavior in humans has developed, strategies have appropriately evolved to proactively mitigate toxicities. These challenges offer complimentary insights and guide next steps to enhance the efficacy of this novel therapeutic modality. With a focus on B-cell malignancies as the paradigm for effective CAR T-cell therapy, this review describes advances in the field as well as current challenges and future directions.
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Affiliation(s)
- Elad Jacoby
- Division of Pediatric Hematology, Oncology and BMT, The Edmond and Lily Safra Children's Hospital, Sheba Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shilpa A Shahani
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Nirali N Shah
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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15
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Holstein SA, Al-Kadhimi Z, Costa LJ, Hahn T, Hari P, Hillengass J, Jacob A, Munshi NC, Oliva S, Pasquini MC, Shi Q, Stadtmauer EA, Waldvogel SL, McCarthy PL. Summary of the Third Annual Blood and Marrow Transplant Clinical Trials Network Myeloma Intergroup Workshop on Minimal Residual Disease and Immune Profiling. Biol Blood Marrow Transplant 2020; 26:e7-e15. [PMID: 31526843 PMCID: PMC6942175 DOI: 10.1016/j.bbmt.2019.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 12/22/2022]
Abstract
The third annual Blood and Marrow Transplant Clinical Trials Network (BMT CTN) Myeloma Intergroup Workshop on Minimal Residual Disease and Immune Profiling was held on November 29, 2018, at the American Society of Hematology (ASH) annual meeting. This workshop featured the latest research focused on minimal residual disease (MRD) assessment and immune profiling (IP) in myeloma as well as discussion of the statistical and regulatory issues intrinsic to the development of MRD as a surrogate endpoint. In this report, we provide a summary of the workshop and focus on the integration of MRD and IP assessment into trial design and clinical practice.
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Affiliation(s)
- Sarah A Holstein
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
| | - Zaid Al-Kadhimi
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Luciano J Costa
- Division of Hematology & Oncology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Theresa Hahn
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Parameswaran Hari
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jens Hillengass
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | | | | | | | - Marcelo C Pasquini
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Qian Shi
- Mayo Clinic, Rochester, Minnesota
| | - Edward A Stadtmauer
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Stephanie L Waldvogel
- Center for International Blood and Marrow Transplant Research, Minneapolis, Minnesota
| | - Philip L McCarthy
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York
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16
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Holstein SA, Ye JC, Howard A, Bhutani M, Gormley N, Hahn T, Hillengass J, Krishnan A, Landgren CO, Munshi NC, Oliva S, Owen RG, Pasquini MC, Puig N, Weinhold N, Weisel K, McCarthy PL. Summary of the Second Annual BMT CTN Myeloma Intergroup Workshop on Minimal Residual Disease and Immune Profiling. Biol Blood Marrow Transplant 2019; 25:e89-e97. [PMID: 30408566 PMCID: PMC6445685 DOI: 10.1016/j.bbmt.2018.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/01/2018] [Indexed: 12/18/2022]
Abstract
The second annual Blood and Marrow Transplant Clinical Trials Network (BMT CTN) Myeloma Intergroup Workshop on Minimal Residual Disease and Immune Profiling was convened on December 7, 2017, at the American Society of Hematology (ASH) meeting. During this workshop, investigators from around the world presented their latest research involving assessment of minimal residual disease (MRD) and immune profiling (IP) in myeloma. This document summarizes the workshop presentations as well as relevant ASH abstracts and focuses on the regulatory issues involved in the integration of MRD and IP assessment in clinical trial design and practice.
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Affiliation(s)
- Sarah A Holstein
- Department of Internal Medicine, Division of Oncology and Hematology, University of Nebraska Medical Center, Omaha, Nebraska.
| | - J Christine Ye
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan, Ann Arbor, Michigan
| | - Alan Howard
- Center for International Blood and Marrow Transplant Research, Minneapolis, Minnesota
| | - Manisha Bhutani
- Department of Hematologic Oncology and Blood Disorders, Levine Cancer Institute, Charlotte, North Carolina
| | - Nicole Gormley
- US Food and Drug Administration, Silver Spring, Maryland
| | - Theresa Hahn
- The Transplant & Cellular Therapy Center, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Jens Hillengass
- The Transplant & Cellular Therapy Center, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Amrita Krishnan
- Department of Hematology & Hematopoietic Cell Transplantation, City of Hope, Duarte, California
| | - C Ola Landgren
- Department of Medicine, Myeloma Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Nikhil C Munshi
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Stefania Oliva
- Division of Hematology, Myeloma Unit, University of Torino, Torino, Italy
| | - Roger G Owen
- Haematological Malignancy Diagnostic Service, St James's Institute of Oncology, Leeds, United Kingdom
| | - Marcelo C Pasquini
- Department of Medicine, Division of Hematology and Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Noemi Puig
- Department of Hematology, Universit Hospital of Salamanca, Salamanca, Spain
| | - Niels Weinhold
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Katja Weisel
- Department of Hematology, Oncology, Immunology and Rheumatology, Universitatsklinikum Tubingen, Tubingen, Germany
| | - Philip L McCarthy
- The Transplant & Cellular Therapy Center, Roswell Park Comprehensive Cancer Center, Buffalo, New York
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17
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Holstein SA, Suman VJ, McCarthy PL. Update on the role of lenalidomide in patients with multiple myeloma. Ther Adv Hematol 2018; 9:175-190. [PMID: 30013765 DOI: 10.1177/2040620718775629] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/06/2018] [Indexed: 11/15/2022] Open
Abstract
Lenalidomide is a derivative of thalidomide and belongs to the class of drugs known as the immunomodulatory drugs (IMiDs). The IMiDs have played a large role in improving the survival outcomes of patients with multiple myeloma. In particular, lenalidomide is currently standard of care in the newly diagnosed setting, in the maintenance setting post-autologous stem cell transplant, as well as in the relapsed/refractory setting. While the combination of lenalidomide and various proteasome inhibitors has proven particularly effective, there are emerging data demonstrating the effectiveness of lenalidomide in combination with other important classes of drugs including the monoclonal antibodies. Recent studies have provided insight into the molecular target of lenalidomide and the other IMiDs, although there is still much to be learned regarding the mechanisms by which lenalidomide affects the myeloma cell and the immune system. Here we review the molecular mechanisms of action, side effects, and the results of the clinical trials which have led to the widespread incorporation of lenalidomide into the myeloma therapeutic armamentarium.
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Affiliation(s)
- Sarah A Holstein
- Division of Oncology and Hematology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vera J Suman
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Philip L McCarthy
- Department of Medicine, Blood and Marrow Transplant Center, Roswell Park Comprehensive Cancer Center, Buffalo, Elm and Carlton Streets, CSC 815, NY 14263, USA
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