1
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Hayashi RJ, Hermiston ML, Wood BL, Teachey DT, Devidas M, Chen Z, Annett RD, Asselin BL, August K, Cho S, Dunsmore KP, Freedman JL, Galardy PJ, Harker-Murray P, Horton TM, Jaju A, Lam A, Messinger YH, Miles RR, Okada M, Patel S, Schafer ES, Schechter T, Shimano KA, Singh N, Steele A, Sulis ML, Vargas SL, Winter SS, Wood C, Zweidler-McKay PA, Loh ML, Hunger SP, Raetz EA, Bollard CM, Allen CE. MRD at the end of induction and EFS in T-cell lymphoblastic lymphoma: Children's Oncology Group trial AALL1231. Blood 2024; 143:2053-2058. [PMID: 38457359 PMCID: PMC11143515 DOI: 10.1182/blood.2023021184] [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: 09/14/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/10/2024] Open
Abstract
ABSTRACT Defining prognostic variables in T-lymphoblastic lymphoma (T-LL) remains a challenge. AALL1231 was a Children's Oncology Group phase 3 clinical trial for newly diagnosed patients with T acute lymphoblastic leukemia or T-LL, randomizing children and young adults to a modified augmented Berlin-Frankfurt-Münster backbone to receive standard therapy (arm A) or with addition of bortezomib (arm B). Optional bone marrow samples to assess minimal residual disease (MRD) at the end of induction (EOI) were collected in T-LL analyzed to assess the correlation of MRD at the EOI to event-free survival (EFS). Eighty-six (41%) of the 209 patients with T-LL accrued to this trial submitted samples for MRD assessment. Patients with MRD <0.1% (n = 75) at EOI had a superior 4-year EFS vs those with MRD ≥0.1% (n = 11) (89.0% ± 4.4% vs 63.6% ± 17.2%; P = .025). Overall survival did not significantly differ between the 2 groups. Cox regression for EFS using arm A as a reference demonstrated that MRD EOI ≥0.1% was associated with a greater risk of inferior outcome (hazard ratio, 3.73; 95% confidence interval, 1.12-12.40; P = .032), which was independent of treatment arm assignment. Consideration to incorporate MRD at EOI into future trials will help establish its value in defining risk groups. CT# NCT02112916.
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Affiliation(s)
- Robert J. Hayashi
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
| | - Michelle L. Hermiston
- Pediatric Hematology Oncology, University of California, San Francisco, San Francisco, CA
| | - Brent L. Wood
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA
| | - David T. Teachey
- Division of Pediatric Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St. Jude Children's Research Hospital, Memphis, TN
| | - Zhiguo Chen
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - Robert D. Annett
- Department of Pediatrics, University of New Mexico, Albuquerque, NM
| | - Barbara L. Asselin
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Golisano Children's Hospital, University of Rochester, Rochester, NY
| | - Keith August
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Steve Cho
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Wisconsin Institute for Medical Research, Madison, WI
| | - Kimberly P. Dunsmore
- Department of Pediatrics, Virginia Tech Carilion School of Medicine, Roanoke, VA
| | - Jason Lawrence Freedman
- Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Paul J. Galardy
- Department of Pediatric Hematology and Oncology, Mayo Clinic, Rochester, MN
| | - Paul Harker-Murray
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Midwest Children's Cancer Center, Milwaukee, WI
| | - Terzah M. Horton
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Texas Children’s Cancer Center, Baylor College of Medicine, Houston, TX
| | - Alok Jaju
- Division of Pediatric Radiology, Department of Radiology, Lurie Children's Hospital, Chicago, IL
| | - Allison Lam
- Miller Children's and Women’s Hospital, Long Beach, CA
| | - Yoav H. Messinger
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Children's Hospitals and Clinics of Minnesota, Minneapolis, MN
| | - Rodney R. Miles
- Division of Hematopathology, Department of Pathology, ARUP Institute for Clinical and Experimental Pathology, University of Utah, Primary Children's Hospital, Salt Lake City, UT
| | - Maki Okada
- Division of Radiation Oncology, Department of Oncology, University of Alberta–Stollery Children’s Hospital, Edmonton, AB, Canada
| | - Samir Patel
- Division of Radiation Oncology, Department of Oncology, University of Alberta–Stollery Children’s Hospital, Edmonton, AB, Canada
| | - Eric S. Schafer
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX
| | - Tal Schechter
- Division of Hematology/Oncology, Department of Pediatrics, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Kristin A. Shimano
- Department of Pediatrics, University of California Benioff Children’s Hospital, San Francisco, CA
| | - Neelam Singh
- Michigan State University Clinical Center, Lansing, MI
| | - Amii Steele
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Carolinas Medical Center/Levine Cancer Institute, Charlotte, NC
| | - Maria L. Sulis
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Sarah L. Vargas
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Children's Oncology Group, Monrovia, CA
| | - Stuart S. Winter
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Research Institute and Cancer and Blood Disorders Program, Children's Minnesota, Minneapolis, MN
| | - Charlotte Wood
- Department of Biostatistics, Children's Oncology Group Data Center, Gainesville, FL
| | | | - Mignon L. Loh
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, University of Washington, Seattle, WA
| | - Stephen P. Hunger
- Division of Pediatric Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Elizabeth A. Raetz
- Division of Pediatric Hematology and Oncology, Stephen D. Hassenfeld Children's Center for Cancer and Blood Disorders, NYU Langone Health, New York, NY
| | - Catherine M. Bollard
- Division of Blood and Bone Marrow Transplantation, Department of Pediatrics, Center for Cancer and Immunology Research, Children's National Medical Center, Washington, DC
| | - Carl E. Allen
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX
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2
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Wood BL, Devidas M, Summers RJ, Chen Z, Asselin B, Rabin KR, Zweidler-McKay PA, Winick NJ, Borowitz MJ, Carroll WL, Raetz EA, Loh ML, Hunger SP, Dunsmore KP, Teachey DT, Winter SS. Prognostic significance of ETP phenotype and minimal residual disease in T-ALL: a Children's Oncology Group study. Blood 2023; 142:2069-2078. [PMID: 37556734 PMCID: PMC10862241 DOI: 10.1182/blood.2023020678] [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: 04/07/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 08/11/2023] Open
Abstract
The early thymic precursor (ETP) immunophenotype was previously reported to confer poor outcome in T-cell acute lymphoblastic leukemia (T-ALL). Between 2009 and 2014, 1256 newly diagnosed children and young adults enrolled in Children's Oncology Group (COG) AALL0434 were assessed for ETP status and minimal residual disease (MRD) using flow cytometry at a central reference laboratory. The subject phenotypes were categorized as ETP (n = 145; 11.5%), near-ETP (n = 209; 16.7%), or non-ETP (n = 902; 71.8%). Despite higher rates of induction failure for ETP (6.2%) and near-ETP (6.2%) than non-ETP (1.2%; P < .0001), all 3 groups showed excellent 5-year event-free survival (EFS) and overall survival (OS): ETP (80.4% ± 3.9% and 86.8 ± 3.4%, respectively), near-ETP (81.1% ± 3.3% and 89.6% ± 2.6%, respectively), and non-ETP (85.3% ± 1.4% and 90.0% ± 1.2%, respectively; P = .1679 and P = .3297, respectively). There was no difference in EFS or OS for subjects with a day-29 MRD <0.01% vs 0.01% to 0.1%. However, day-29 MRD ≥0.1% was associated with inferior EFS and OS for patients with near-ETP and non-ETP, but not for those with ETP. For subjects with day-29 MRD ≥1%, end-consolidation MRD ≥0.01% was a striking predictor of inferior EFS (80.9% ± 4.1% vs 52.4% ± 8.1%, respectively; P = .0001). When considered as a single variable, subjects with all 3 T-ALL phenotypes had similar outcomes and subjects with persistent postinduction disease had inferior outcomes, regardless of their ETP phenotype. This clinical trial was registered at AALL0434 as #NCT00408005.
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Affiliation(s)
- Brent L. Wood
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Meenakshi Devidas
- Department of Global Pediatric Medicine, Saint Jude Children's Research Hospital, Memphis, TN
| | - Ryan J. Summers
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA
- Department of Pediatrics, Emory University, Atlanta, GA
| | - Zhiguo Chen
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - Barbara Asselin
- Department of Pediatrics, University of Rochester, Rochester, NY
| | - Karen R. Rabin
- Pediatric Hematology/Oncology, Baylor College of Medicine/Dan L Duncan Comprehensive Cancer Center, Houston, TX
| | | | - Naomi J. Winick
- Pediatric Hematology and Oncology, UT Southwestern/Simmons Cancer Center-Dallas, Dallas, TX
| | - Michael J. Borowitz
- Department of Pathology, Johns Hopkins University/Sidney Kimmel Cancer Center, Baltimore, MD
| | - William L. Carroll
- Department of Pediatrics and Pathology, Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, Hassenfeld Children's Center, New York, NY
| | - Elizabeth A. Raetz
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, New York, NY
| | - Mignon L. Loh
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, WA
- Department of Pediatrics, Seattle Children’s Hospital, University of Washington, Seattle, WA
| | - Stephen P. Hunger
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia, and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Kimberly P. Dunsmore
- Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA
| | - David T. Teachey
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia, and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Stuart S. Winter
- Cancer and Blood Disorders Program, Children’s Minnesota, Minneapolis, MN
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Kanaan SB, Urselli F, Radich JP, Nelson JL. Ultrasensitive chimerism enhances measurable residual disease testing after allogeneic hematopoietic cell transplantation. Blood Adv 2023; 7:6066-6079. [PMID: 37467017 PMCID: PMC10582300 DOI: 10.1182/bloodadvances.2023010332] [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: 04/04/2023] [Revised: 06/15/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
Increasing mixed chimerism (reemerging recipient cells) after allogeneic hematopoietic cell transplant (allo-HCT) can indicate relapse, the leading factor determining mortality in blood malignancies. Most clinical chimerism tests have limited sensitivity and are primarily designed to monitor engraftment. We developed a panel of quantitative polymerase chain reaction assays using TaqMan chemistry capable of quantifying chimerism in the order of 1 in a million. At such analytic sensitivity, we hypothesized that it could inform on relapse risk. As a proof-of-concept, we applied our panel to a retrospective cohort of patients with acute leukemia who underwent allo-HCT with known outcomes. Recipient cells in bone marrow aspirates (BMAs) remained detectable in 97.8% of tested samples. Absolute recipient chimerism proportions and rates at which these proportions increased in BMAs in the first 540 days after allo-HCT were associated with relapse. Detectable measurable residual disease (MRD) via flow cytometry in BMAs after allo-HCT showed limited correlation with relapse. This correlation noticeably strengthened when combined with increased recipient chimerism in BMAs, demonstrating the ability of our ultrasensitive chimerism assay to augment MRD data. Our technology reveals an underappreciated usefulness of clinical chimerism. Used side by side with MRD assays, it promises to improve identification of patients with the highest risk of disease reoccurrence for a chance of early intervention.
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Affiliation(s)
- Sami B. Kanaan
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
- Research and Development, Chimerocyte Inc, Seattle, WA
| | - Francesca Urselli
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Jerald P. Radich
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
- Division of Hematology and Oncology, Department of Medicine, University of Washington, Seattle, WA
| | - J. Lee Nelson
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
- Research and Development, Chimerocyte Inc, Seattle, WA
- Division of Rheumatology, Department of Medicine, University of Washington, Seattle, WA
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4
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Wang M, Wang B, Xu LP, Wang Y, Zhang XH, Cheng YF, Sun YQ, Zhang YY, Liu YR, Chang YJ, Liu KY, Huang XJ. The lower relapse rate and better survival advantages of haploidentical allograft compared with HLA-matched sibling donor allografts for intermediate- and adverse-risk AML patients with pretransplantation minimal residual disease. Bone Marrow Transplant 2023; 58:215-218. [PMID: 36376473 DOI: 10.1038/s41409-022-01872-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Affiliation(s)
- Ming Wang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Bixia Wang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Lan-Ping Xu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yu Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Xiao-Hui Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yi-Fei Cheng
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yu-Qian Sun
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yuan-Yuan Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yan-Rong Liu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Ying-Jun Chang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Kai-Yan Liu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Xiao-Jun Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China. .,Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China. .,Peking-Tsinghua Center for Life Sciences, Beijing, China.
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5
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Chen X, Gao Q, Roshal M, Cherian S. Flow cytometric assessment for minimal/measurable residual disease in B lymphoblastic leukemia/lymphoma in the era of immunotherapy. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2023; 104:205-223. [PMID: 36683279 DOI: 10.1002/cyto.b.22113] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 11/30/2022] [Accepted: 12/28/2022] [Indexed: 01/24/2023]
Abstract
Minimal/measurable residual disease (MRD) is the most important independent prognostic factor for patients with B-lymphoblastic leukemia (B-LL). MRD post therapy has been incorporated into risk stratification and clinical management, resulting in substantially improved outcomes in pediatric and adult patients. Currently, MRD in B-ALL is most commonly assessed by multiparametric flow cytometry and molecular (polymerase chain reaction or high-throughput sequencing based) methods. The detection of MRD by flow cytometry in B-ALL often begins with B cell antigen-based gating strategies. Over the past several years, targeted immunotherapy directed against B cell markers has been introduced in patients with relapsed or refractory B-ALL and has demonstrated encouraging results. However, targeted therapies have significant impact on the immunophenotype of leukemic blasts, in particular, downregulation or loss of targeted antigens on blasts and normal B cell precursors, posing challenges for MRD detection using standard gating strategies. Novel flow cytometric approaches, using alternative strategies for population identification, sometimes including alternative gating reagents, have been developed and implemented to monitor MRD in the setting of post targeted therapy.
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Affiliation(s)
- Xueyan Chen
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Qi Gao
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Mikhail Roshal
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Sindhu Cherian
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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6
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"Blasts" in myeloid neoplasms - how do we define blasts and how do we incorporate them into diagnostic schema moving forward? Leukemia 2022; 36:327-332. [PMID: 35042955 DOI: 10.1038/s41375-021-01498-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 11/08/2022]
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Abstract
Minimal or measurable residual disease (MRD) after therapy is the most important independent prognostic factor in acute myeloid leukemia. MRD measured by multiparametric flow cytometry and real-time quantitative polymerase chain reaction has been integrated into risk stratification and used to guide future treatment strategies. Recent technological advances have allowed the application of the novel molecular method, high-throughput sequencing, in MRD detection in clinical practice to improve sensitivity and specificity. Randomized studies are needed to address outstanding issues, including the optimal methods and timing of MRD testing and interlaboratory standardization to facilitate comparisons, to further improve MRD-directed interventions.
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Affiliation(s)
- Xueyan Chen
- Hematopathology, SCCA G7800, 825 Eastlake Ave E., Seattle, WA 98109, USA
| | - Sindhu Cherian
- Hematopathology, SCCA G7800, 825 Eastlake Ave E., Seattle, WA 98109, USA.
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8
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Minimal Residual Disease in Acute Lymphoblastic Leukemia: Current Practice and Future Directions. Cancers (Basel) 2021; 13:cancers13081847. [PMID: 33924381 PMCID: PMC8069391 DOI: 10.3390/cancers13081847] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/31/2021] [Accepted: 04/11/2021] [Indexed: 12/27/2022] Open
Abstract
Simple Summary Acute lymphoblastic leukemia minimal residual disease (MRD) refers to the presence of residual leukemia cells following the achievement of complete remission, but below the limit of detection using conventional morphologic assessment. Up to two thirds of children may have MRD detectable after induction therapy depending on the biological subtype and method of detection. Patients with detectable MRD have an increased likelihood of relapse. A rapid reduction of MRD reveals leukemia sensitivity to therapy and under this premise, MRD has emerged as the strongest independent predictor of individual patient outcome and is crucial for risk stratification. However, it is a poor surrogate for treatment effect on long term outcome at the trial level, with impending need of randomized trials to prove efficacy of MRD-adapted interventions. Abstract Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer and advances in its clinical and laboratory biology have grown exponentially over the last few decades. Treatment outcome has improved steadily with over 90% of patients surviving 5 years from initial diagnosis. This success can be attributed in part to the development of a risk stratification approach to identify those subsets of patients with an outstanding outcome that might qualify for a reduction in therapy associated with fewer short and long term side effects. Likewise, recognition of patients with an inferior prognosis allows for augmentation of therapy, which has been shown to improve outcome. Among the clinical and biological variables known to impact prognosis, the kinetics of the reduction in tumor burden during initial therapy has emerged as the most important prognostic variable. Specifically, various methods have been used to detect minimal residual disease (MRD) with flow cytometric and molecular detection of antigen receptor gene rearrangements being the most common. However, many questions remain as to the optimal timing of these assays, their sensitivity, integration with other variables and role in treatment allocation of various ALL subgroups. Importantly, the emergence of next generation sequencing assays is likely to broaden the use of these assays to track disease evolution. This review will discuss the biological basis for utilizing MRD in risk assessment, the technical approaches and limitations of MRD detection and its emerging applications.
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9
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Tembhare PR, Sriram H, Khanka T, Chatterjee G, Panda D, Ghogale S, Badrinath Y, Deshpande N, Patkar NV, Narula G, Bagal B, Jain H, Sengar M, Khattry N, Banavali S, Gujral S, Subramanian PG. Flow cytometric evaluation of CD38 expression levels in the newly diagnosed T-cell acute lymphoblastic leukemia and the effect of chemotherapy on its expression in measurable residual disease, refractory disease and relapsed disease: an implication for anti-CD38 immunotherapy. J Immunother Cancer 2021; 8:jitc-2020-000630. [PMID: 32439800 PMCID: PMC7247386 DOI: 10.1136/jitc-2020-000630] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2020] [Indexed: 12/12/2022] Open
Abstract
Background Recently, anti-CD38 monoclonal antibody (Mab) therapy has become a focus of attention as an additional/alternative option for many hematological neoplasms including T-cell acute lymphoblastic leukemia (T-ALL). It has been shown that antitumor efficacy of anti-CD38-Mab depends on the level of CD38 expression on tumor cells. Reports on CD38 expression in T-ALL are scarce, and data on the effect of cytotoxic chemotherapy on CD38 expression are limited to very few samples. Moreover, it lacks entirely in refractory disease and in adult T-ALL. We report the flow cytometric evaluation of CD38 expression in T-ALL blasts at diagnosis and the effect of cytotoxic chemotherapy on its expression in measurable residual disease (MRD), refractory disease (MRD≥5%), and relapsed disease in a large cohort of T-ALL. Methods The study included 347 samples (188 diagnostic, 100 MRD, 24 refractory and 35 relapse samples) from 196 (children: 85; adolescents/adults: 111) patients with T-ALL. CD38-positive blasts percentages (CD38-PBPs) and expression-intensity (mean fluorescent intensity, CD38-MFI) were studied using multicolor flow cytometry (MFC). MFC-based MRD was performed at the end-of-induction (EOI-MRD, day 30–35) and end-of-consolidation (EOC-MRD, day 78–85) subsequent follow-up (SFU-MRD) points. Results Patients were classified into early thymic precursor subtype of T-ALL (ETPALL, 54/188, 28.7%), and non-ETPALL (134/188, 71.3%). Of 188, EOI-MRD assessment was available in 152, EOC-MRD was available in 96 and SFU-MRD was available in 14 patients. CD38 was found positive in 97.9% (184/188) of diagnostic, 88.7% (110/124) MRD (including 24-refractory) and 82.9% (29/35) relapsed samples. Median (95% CI) of CD38-PBPs/MFI in diagnostic, MRD, refractory, and relapsed T-ALL samples were, respectively, 85.9% (82.10%–89.91%)/4.2 (3.88–4.47), 74.0% (58.87%–83.88%)/4.6 (3.67–6.81), 79.6% (65.25%–96.11%)/4.6 (3.33–8.47) and 85.2% (74.48%–93.01%)/5.6 (4.14–8.99). No significant difference was noted in CD38 expression between pediatric versus adult and patients with ETPALL versus non-ETPALL. No change was observed in CD38-MFI between diagnostic versus MRD and diagnostic versus relapsed paired samples. However, we noticed a mild drop in the CD38-PBPs in MRD samples compared with the diagnostic samples (p=0.016). Conclusion We report an in-depth analysis of CD38 expression in a large cohort of T-ALL at diagnosis, during chemotherapy, and at relapse. Our data demonstrated that CD38 is robustly expressed in T-ALL blasts with a little effect of cytotoxic chemotherapy making it a potentially effective target for antiCD38-Mab therapy.
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Affiliation(s)
- Prashant Ramesh Tembhare
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India .,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Harshini Sriram
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Twinkle Khanka
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Gaurav Chatterjee
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Devasis Panda
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Sitaram Ghogale
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Yajamanam Badrinath
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Nilesh Deshpande
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Nikhil V Patkar
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Gaurav Narula
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Pediatric Oncology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Bhausaheb Bagal
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Medical Oncology, Tata Memorial Center, Mumbai, Maharashtra, India
| | - Hasmukh Jain
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Medical Oncology, Tata Memorial Center, Mumbai, Maharashtra, India
| | - Manju Sengar
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Medical Oncology, Tata Memorial Center, Mumbai, Maharashtra, India
| | - Navin Khattry
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Medical Oncology, Tata Memorial Center, Mumbai, Maharashtra, India
| | - Shripad Banavali
- Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Pediatric Oncology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Sumeet Gujral
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Papagudi G Subramanian
- Hematopathology Laboratory, Tata Memorial Centre, Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
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10
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Cao LQ, Zhou Y, Liu YR, Xu LP, Zhang XH, Wang Y, Chen H, Chen YH, Wang FR, Han W, Sun YQ, Yan CH, Tang FF, Mo XD, Liu KY, Fan QZ, Chang YJ, Huang XJ. A risk score system for stratifying the risk of relapse in B cell acute lymphocytic leukemia patients after allogenic stem cell transplantation. Chin Med J (Engl) 2021; 134:1199-1208. [PMID: 33734137 PMCID: PMC8143760 DOI: 10.1097/cm9.0000000000001402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND For patients with B cell acute lymphocytic leukemia (B-ALL) who underwent allogeneic stem cell transplantation (allo-SCT), many variables have been demonstrated to be associated with leukemia relapse. In this study, we attempted to establish a risk score system to predict transplant outcomes more precisely in patients with B-ALL after allo-SCT. METHODS A total of 477 patients with B-ALL who underwent allo-SCT at Peking University People's Hospital from December 2010 to December 2015 were enrolled in this retrospective study. We aimed to evaluate the factors associated with transplant outcomes after allo-SCT, and establish a risk score to identify patients with different probabilities of relapse. The univariate and multivariate analyses were performed with the Cox proportional hazards model with time-dependent variables. RESULTS All patients achieved neutrophil engraftment, and 95.4% of patients achieved platelet engraftment. The 5-year cumulative incidence of relapse (CIR), overall survival (OS), leukemia-free survival (LFS), and non-relapse mortality were 20.7%, 70.4%, 65.6%, and 13.9%, respectively. Multivariate analysis showed that patients with positive post-transplantation minimal residual disease (MRD), transplanted beyond the first complete remission (≥CR2), and without chronic graft-versus-host disease (cGVHD) had higher CIR (P < 0.001, P = 0.004, and P < 0.001, respectively) and worse LFS (P < 0.001, P = 0.017, and P < 0.001, respectively), and OS (P < 0.001, P = 0.009, and P < 0.001, respectively) than patients without MRD after transplantation, transplanted in CR1, and with cGVHD. A risk score for predicting relapse was formulated with the three above variables. The 5-year relapse rates were 6.3%, 16.6%, 55.9%, and 81.8% for patients with scores of 0, 1, 2, and 3 (P < 0.001), respectively, while the 5-year LFS and OS values decreased with increasing risk score. CONCLUSION This new risk score system might stratify patients with different risks of relapse, which could guide treatment.
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Affiliation(s)
- Le-Qing Cao
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Yang Zhou
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Yan-Rong Liu
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Lan-Ping Xu
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Xiao-Hui Zhang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Yu Wang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Huan Chen
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Yu-Hong Chen
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Feng-Rong Wang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Wei Han
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Yu-Qian Sun
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Chen-Hua Yan
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Fei-Fei Tang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Xiao-Dong Mo
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Kai-Yan Liu
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Qiao-Zhen Fan
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Ying-Jun Chang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
| | - Xiao-Jun Huang
- Peking University People's Hospital & Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing 100044, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Research Unit of Key Technique for Diagnosis and Treatments of Hematologic Malignancies, Chinese Academy of Medical Sciences, 2019RU029, Beijing, China
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11
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Demaree B, Delley CL, Vasudevan HN, Peretz CAC, Ruff D, Smith CC, Abate AR. Joint profiling of DNA and proteins in single cells to dissect genotype-phenotype associations in leukemia. Nat Commun 2021; 12:1583. [PMID: 33707421 PMCID: PMC7952600 DOI: 10.1038/s41467-021-21810-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/11/2021] [Indexed: 12/13/2022] Open
Abstract
Studies of acute myeloid leukemia rely on DNA sequencing and immunophenotyping by flow cytometry as primary tools for disease characterization. However, leukemia tumor heterogeneity complicates integration of DNA variants and immunophenotypes from separate measurements. Here we introduce DAb-seq, a technology for simultaneous capture of DNA genotype and cell surface phenotype from single cells at high throughput, enabling direct profiling of proteogenomic states in tens of thousands of cells. To demonstrate the approach, we analyze the disease of three patients with leukemia over multiple treatment timepoints and disease recurrences. We observe complex genotype-phenotype dynamics that illustrate the subtlety of the disease process and the degree of incongruity between blast cell genotype and phenotype in different clinical scenarios. Our results highlight the importance of combined single-cell DNA and protein measurements to fully characterize the heterogeneity of leukemia.
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Affiliation(s)
- Benjamin Demaree
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA, USA
| | - Cyrille L Delley
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Harish N Vasudevan
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA, USA
| | - Cheryl A C Peretz
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- Children's Hospital and Research Center Oakland, Oakland, CA, USA
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA
| | - David Ruff
- Mission Bio, Inc., South San Francisco, CA, USA
| | - Catherine C Smith
- Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA
| | - Adam R Abate
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA.
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA, USA.
- Chan Zuckerberg Biohub, San Francisco, CA, USA.
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12
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Hayashi RJ, Winter SS, Dunsmore KP, Devidas M, Chen Z, Wood BL, Hermiston ML, Teachey DT, Perkins SL, Miles RR, Raetz EA, Loh ML, Winick NJ, Carroll WL, Hunger SP, Lim MS, Gross TG, Bollard CM. Successful Outcomes of Newly Diagnosed T Lymphoblastic Lymphoma: Results From Children's Oncology Group AALL0434. J Clin Oncol 2020; 38:3062-3070. [PMID: 32552472 PMCID: PMC7479761 DOI: 10.1200/jco.20.00531] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2020] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The Children's Oncology Group (COG) protocol AALL0434 evaluated the safety and efficacy of multi-agent chemotherapy with Capizzi-based methotrexate/pegaspargase (C-MTX) in patients with newly diagnosed pediatric T-cell lymphoblastic lymphoma (T-LL) and gained preliminary data using nelarabine in high-risk patients. PATIENTS AND METHODS The trial enrolled 299 patients, age 1-31 years. High-risk (HR) patients had ≥ 1% minimal detectable disease (MDD) in the bone marrow at diagnosis or received prior steroid treatment. Induction failure was defined as failure to achieve a partial response (PR) by the end of the 4-week induction. All patients received the augmented Berlin-Frankfurt-Muenster (ABFM) C-MTX regimen. HR patients were randomly assigned to receive or not receive 6 5-day courses of nelarabine incorporated into ABFM. Patients with induction failure were nonrandomly assigned to ABFM C-MTX plus nelarabine. No patients received prophylactic cranial radiation; however, patients with CNS3 disease (CSF WBC ≥ 5/μL with blasts or cranial nerve palsies, brain/eye involvement, or hypothalamic syndrome) were ineligible. RESULTS At end-induction, 98.8% of evaluable participants had at least a PR. The 4-year event-free survival (EFS) and overall survival (OS) were 84.7% ± 2.3% and 89.0% ± 2.0%. The 4-year disease-free survival (DFS) from end-induction was 85.9% ± 2.6%. There was no difference in DFS observed between the HR and standard-risk groups (P = .29) or by treatment regimen (P = .55). Disease stage, tumor response, and MDD at diagnosis did not demonstrate thresholds that resulted in differences in EFS. Nelarabine did not show an advantage for HR patients. CNS relapse occurred in only 4 patients. CONCLUSION COG AALL0434 produced excellent outcomes in one of the largest trials ever conducted for patients with newly diagnosed T-LL. The COG ABFM regimen with C-MTX provided excellent EFS and OS without cranial radiation.
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Affiliation(s)
- Robert J. Hayashi
- Pediatric Hematology/Oncology, Washington School of Medicine, St Louis Children’s Hospital, St Louis, MO
| | - Stuart S. Winter
- Children’s Minnesota Cancer and Blood Disorders Program, Minneapolis, MN
| | | | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St Jude Children’s Research Hospital, Memphis, TN
| | - Zhiguo Chen
- Department of Biostatistics, College of Medicine and College of Public Health and Health Professions, University of Florida, Gainesville, FL
| | - Brent L. Wood
- Laboratory Medicine, Seattle Children’s Hospital, Seattle, WA
| | - Michelle L. Hermiston
- Department of Pediatrics, UCSF Benioff Children’s Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - David T. Teachey
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Sherrie L. Perkins
- Department of Pathology, University of Utah Health Sciences Center, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Rodney R. Miles
- Department of Pathology, University of Utah Health Sciences Center, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Elizabeth A. Raetz
- Department of Pediatrics and Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, New York, NY
| | - Mignon L. Loh
- Department of Pediatrics, UCSF Benioff Children’s Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Naomi J. Winick
- Pediatric Hematology/Oncology, University of Texas Southwestern/Simmons Cancer Center, Dallas, TX
| | - William L. Carroll
- Department of Pediatrics and Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, New York, NY
| | - Stephen P. Hunger
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Megan S. Lim
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, and The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Thomas G. Gross
- National Cancer Institute Center for Global Health, Rockville, MD
| | - Catherine M. Bollard
- Division of Blood and Marrow Transplantation, Children’s National Health System, Washington, DC
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13
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Salhotra A, Yang D, Mokhtari S, Malki MMA, Ali H, Sandhu KS, Aribi A, Khaled S, Mei M, Budde E, Snyder D, Cao T, Spielberger R, Marcucci G, Pullarkat V, Forman SJ, Nakamura R, Stein A, Aldoss I. Outcomes of Allogeneic Hematopoietic Cell Transplantation after Salvage Therapy with Blinatumomab in Patients with Relapsed/Refractory Acute Lymphoblastic Leukemia. Biol Blood Marrow Transplant 2020; 26:1084-1090. [PMID: 32035275 DOI: 10.1016/j.bbmt.2020.01.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/10/2020] [Accepted: 01/29/2020] [Indexed: 12/19/2022]
Abstract
Historically, outcomes of adult patients with relapsed acute lymphoblastic leukemia (ALL) who fail to enter remission with conventional chemotherapy are very poor. Blinatumomab, a bispecific CD3/CD19 antibody, has shown remarkable activity in relapsed/refractory (r/r) ALL. Although allogeneic hematopoietic cell transplant (HCT) is the recommended consolidation therapy for patients with r/r ALL who respond to salvage therapy, HCT and toxicity outcomes for those who received blinatumomab salvage and HCT remain largely unknown. We treated 89 patients with r/r ALL with blinatumomab, of whom 43 patients (48%) achieved remission. Here we describe our single-center experience in the subset of patients who responded to blinatumomab salvage therapy for eradication of either gross (n = 24) or minimal residual disease (n = 11) before HCT. Overall survival at 1 and 2 years after allogeneic HCT was 77% and 52%, respectively. Leukemia-free survival at 1 and 2 years were 65% and 40%, respectively. Additionally, with blinatumomab administration pre-HCT, no unusual toxicities such as delayed neutrophil/platelet engraftment or graft failure were observed. Acute grades II to IV graft-versus-host disease (GVHD) at day +100 post-HCT was at 43% and 2-year chronic GVHD was 36%, both comparable with historic control subjects. Finally, results of our subset analysis based on pre-HCT minimal residual disease (MRD) status indicated no significant difference in survival outcomes among patients undergoing transplant in MRD-negative status and the entire cohort. In conclusion, based on results of this study, blinatumomab may be considered as a safe and effective agent for r/r ALL patients before HCT.
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Affiliation(s)
| | - Dongyun Yang
- Department of Computational Quantitative Medicine/BRI, City of Hope, Duarte, California
| | - Sally Mokhtari
- Department of Clinical Translational Project Development, City of Hope, Duarte, California
| | - Monzr M Al Malki
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Haris Ali
- Department of Hematology and HCT, City of Hope, Duarte, California
| | | | - Ahmed Aribi
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Samer Khaled
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Matthew Mei
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Elizabeth Budde
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - David Snyder
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Thai Cao
- Department of Hematology and HCT, City of Hope, Duarte, California
| | | | - Guido Marcucci
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Vinod Pullarkat
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Stephen J Forman
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Ryotaro Nakamura
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Anthony Stein
- Department of Hematology and HCT, City of Hope, Duarte, California
| | - Ibrahim Aldoss
- Department of Hematology and HCT, City of Hope, Duarte, California
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14
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Salhotra A, Afkhami M, Yang D, Mokhtari S, Telatar M, Gu D, Pillai RK, Weisenburger DD, Murata-Collins J, Weigel D, Aoun P, Aldoss I, Al Malki MM, Khaled S, Mei M, Ali H, Aribi A, Budde E, Sandhu K, O’Donnell M, Snyder D, Pullarkat V, Forman SJ, Marcucci G, Nakamura R, Stein A. Allogeneic Hematopoietic Cell Transplantation Outcomes in Patients Carrying Isocitrate Dehydrogenase Mutations. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 19:e400-e405. [DOI: 10.1016/j.clml.2019.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/27/2019] [Accepted: 04/15/2019] [Indexed: 01/09/2023]
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15
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Patkar N, Kakirde C, Bhanshe P, Joshi S, Chaudhary S, Badrinath Y, Ghoghale S, Deshpande N, Kadechkar S, Chatterjee G, Kannan S, Shetty D, Gokarn A, Punatkar S, Bonda A, Nayak L, Jain H, Bagal B, Menon H, Sengar M, Khizer SH, Khattry N, Tembhare P, Gujral S, Subramanian P. Utility of Immunophenotypic Measurable Residual Disease in Adult Acute Myeloid Leukemia-Real-World Context. Front Oncol 2019; 9:450. [PMID: 31263671 PMCID: PMC6584962 DOI: 10.3389/fonc.2019.00450] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 05/13/2019] [Indexed: 01/10/2023] Open
Abstract
Introduction: One of the mainstays of chemotherapy in acute myeloid leukemia (AML) is induction with a goal to achieve morphological complete remission (CR). However, not all patients by this remission criterion achieve long-term remission and a subset relapse. This relapse is explained by the presence of measurable residual disease (MRD). Methods: We accrued 451 consecutive patients of adult AML (from March 2012 to December 2017) after informed consent. All patients received standard chemotherapy. MRD testing was done at post-induction and, if feasible, post-consolidation using 8- and later 10-color FCM. Analysis of MRD was done using a combination of difference from normal and leukemia-associated immunophenotype approaches. Conventional karyotyping and FISH were done as per standard recommendations, and patients were classified into favorable, intermediate, and poor cytogenetic risk groups. The presence of FLT3-ITD, NPM1, and CEBPA mutations was detected by a fragment length analysis-based assay. Results: As compared to Western data, our cohort of patients was younger with a median age of 35 years. There were 62 induction deaths in this cohort (13.7%), and 77 patients (17.1%) were not in morphological remission. The median follow-up was 26.0 months. Poor-risk cytogenetics and the presence of FLT3-ITD were significantly associated with inferior outcome. The presence of post-induction MRD assessment was significantly associated with adverse outcome with respect to OS (p = 0.01) as well as RFS (p = 0.004). Among established genetic subgroups, detection of MRD in intermediate cytogenetic and NPM1 mutated groups was also highly predictive of inferior outcome. On multivariate analysis, immunophenotypic MRD at the end of induction and FLT3-ITD emerged as independent prognostic factors predictive for outcome. Conclusion: This is the first data from a resource-constrained real-world setting demonstrating the utility of AML MRD as well as long-term outcome of AML. Our data is in agreement with other studies that determination of MRD is extremely important in predicting outcome. AML MRD is a very useful guide for guiding post-remission strategies in AML and should be incorporated into routine treatment algorithms.
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Affiliation(s)
- Nikhil Patkar
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Chinmayee Kakirde
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Prasanna Bhanshe
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Swapnali Joshi
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Shruti Chaudhary
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | | | - Sitaram Ghoghale
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Nilesh Deshpande
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Shraddha Kadechkar
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Gaurav Chatterjee
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Sadhana Kannan
- Biostatistics, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Dhanalaxmi Shetty
- Department of Cytogenetics, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Anant Gokarn
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Sachin Punatkar
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Avinash Bonda
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Lingaraj Nayak
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Hasmukh Jain
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Bhausaheb Bagal
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Hari Menon
- Haemato-Oncology, CyteCare Cancer Hospital, Bangalore, India
| | - Manju Sengar
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Syed Hasan Khizer
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Navin Khattry
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Prashant Tembhare
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
| | - Sumeet Gujral
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Mumbai, India
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16
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Rastogi P, Sachdeva MUS. Flow Cytometric Minimal Residual Disease Analysis in Acute Leukemia: Current Status. Indian J Hematol Blood Transfus 2019; 36:3-15. [PMID: 32174688 DOI: 10.1007/s12288-019-01118-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 03/26/2019] [Indexed: 02/02/2023] Open
Abstract
Minimal residual disease (MRD) analysis for patients of acute leukemia has evolved as a significant prognostic factor. Based on the MRD results, the cases are risk-stratified after induction chemotherapy, and an alteration in further management is made to yield maximal therapeutic benefits. The two primary methodologies for MRD detection are multi-parameter flow cytometry (MFC) and polymerase chain reaction. MFC identifies the MRD based on characteristic 'leukemia-associated immunophenotypes' on the residual leukemia cells. MRD analysis by MFC is most frequently done at the post-induction stage of treatment and often can achieve a sensitivity of detecting one leukemic cell in 10,000 normal cells, or even higher at times. This review outlines the technical aspects and provides inputs on standard antibody panels used for MRD detection in B-, T-lineage acute lymphoblastic leukemias, and acute myeloid leukemia.
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Affiliation(s)
- Pulkit Rastogi
- 1Department of Histopathology, Level 5, Research Block A, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh, 160012 India
| | - Man Updesh Singh Sachdeva
- 2Department of Hematology, Level 5, Research Block A, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh, 160012 India
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17
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Chen X, Wood BL, Cherian S. Immunophenotypic Features of Myeloid Neoplasms Associated with Chromosome 7 Abnormalities. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 96:300-309. [DOI: 10.1002/cyto.b.21775] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/31/2019] [Accepted: 02/05/2019] [Indexed: 02/04/2023]
Affiliation(s)
- Xueyan Chen
- Department of Laboratory MedicineUniversity of Washington Seattle Washington
| | - Brent L. Wood
- Department of Laboratory MedicineUniversity of Washington Seattle Washington
- Seattle Cancer Care Alliance Seattle Washington
| | - Sindhu Cherian
- Department of Laboratory MedicineUniversity of Washington Seattle Washington
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18
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Abstract
Immunophenotyping by multiparameter flow cytometry is a rapid and efficient technique to simultaneously assess and correlate multiple individual cell properties like size and internal complexity along with antigen expression in a population of cells. This method is utilized for rapid characterization of the blasts and classification of acute myeloid leukemia (AML), in both the peripheral blood (PB) and bone marrow (BM). This technique is not only useful in the initial diagnosis but also in monitoring and determining prognosis of the disease through minimal residual disease (MRD) testing. This chapter provides an overview of procedures for specimen processing, staining, and immunophenotyping of AML and describes the principles of data analysis for AML classification and MRD testing.
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19
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Fuda F, Chen W. Minimal/Measurable Residual Disease Detection in Acute Leukemias by Multiparameter Flow Cytometry. Curr Hematol Malig Rep 2018; 13:455-466. [DOI: 10.1007/s11899-018-0479-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Zhou Y, Moon A, Hoyle E, Fromm JR, Chen X, Soma L, Salipante SJ, Wood BL, Wu D. Pattern associated leukemia immunophenotypes and measurable disease detection in acute myeloid leukemia or myelodysplastic syndrome with mutated NPM1. CYTOMETRY PART B-CLINICAL CYTOMETRY 2018; 96:67-72. [DOI: 10.1002/cyto.b.21744] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 09/18/2018] [Accepted: 10/01/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Yi Zhou
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Andres Moon
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Eric Hoyle
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Jonathan R. Fromm
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Xueyan Chen
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Lori Soma
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Stephen J. Salipante
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - Brent L. Wood
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
| | - David Wu
- Department of Laboratory Medicine; University of Washington; Seattle Western Australia Australia
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Winter SS, Dunsmore KP, Devidas M, Wood BL, Esiashvili N, Chen Z, Eisenberg N, Briegel N, Hayashi RJ, Gastier-Foster JM, Carroll AJ, Heerema NA, Asselin BL, Gaynon PS, Borowitz MJ, Loh ML, Rabin KR, Raetz EA, Zweidler-Mckay PA, Winick NJ, Carroll WL, Hunger SP. Improved Survival for Children and Young Adults With T-Lineage Acute Lymphoblastic Leukemia: Results From the Children's Oncology Group AALL0434 Methotrexate Randomization. J Clin Oncol 2018; 36:2926-2934. [PMID: 30138085 DOI: 10.1200/jco.2018.77.7250] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
PURPOSE Early intensification with methotrexate (MTX) is a key component of acute lymphoblastic leukemia (ALL) therapy. Two different approaches to MTX intensification exist but had not been compared in T-cell ALL (T-ALL): the Children's Oncology Group (COG) escalating dose intravenous MTX without leucovorin rescue plus pegaspargase escalating dose, Capizzi-style, intravenous MTX (C-MTX) regimen and the Berlin-Frankfurt-Muenster (BFM) high-dose intravenous MTX (HDMTX) plus leucovorin rescue regimen. PATIENTS AND METHODS COG AALL0434 included a 2 × 2 randomization that compared the COG-augmented BFM (ABFM) regimen with either C-MTX or HDMTX during the 8-week interim maintenance phase. All patients with T-ALL, except for those with low-risk features, received prophylactic (12 Gy) or therapeutic (18 Gy for CNS3) cranial irradiation during either the consolidation (C-MTX; second month of therapy) or delayed intensification (HDMTX; seventh month of therapy) phase. RESULTS AALL0434 accrued 1,895 patients from 2007 to 2014. The 5-year event-free survival and overall survival rates for all eligible, evaluable patients with T-ALL were 83.8% (95% CI, 81.2% to 86.4%) and 89.5% (95% CI, 87.4% to 91.7%), respectively. The 1,031 patients with T-ALL but without CNS3 disease or testicular leukemia were randomly assigned to receive ABFM with C-MTX (n = 519) or HDMTX (n = 512). The estimated 5-year disease-free survival ( P = .005) and overall survival ( P = .04) rates were 91.5% (95% CI, 88.1% to 94.8%) and 93.7% (95% CI, 90.8% to 96.6%) for C-MTX and 85.3% (95% CI, 81.0%-89.5%) and 89.4% (95% CI, 85.7%-93.2%) for HDMTX. Patients assigned to C-MTX had 32 relapses, six with CNS involvement, whereas those assigned to HDMTX had 59 relapses, 23 with CNS involvement. CONCLUSION AALL0434 established that ABFM with C-MTX was superior to ABFM plus HDMTX for T-ALL in approximately 90% of patients who received CRT, with later timing for those receiving HDMTX.
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Affiliation(s)
- Stuart S Winter
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Kimberly P Dunsmore
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Meenakshi Devidas
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Brent L Wood
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Natia Esiashvili
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Zhiguo Chen
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Nancy Eisenberg
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Nikki Briegel
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Robert J Hayashi
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Julie M Gastier-Foster
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Andrew J Carroll
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Nyla A Heerema
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Barbara L Asselin
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Paul S Gaynon
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Michael J Borowitz
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Mignon L Loh
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Karen R Rabin
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Elizabeth A Raetz
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Patrick A Zweidler-Mckay
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Naomi J Winick
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - William L Carroll
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Stephen P Hunger
- Stuart S. Winter, Children's Minnesota Cancer and Blood Disorders Program, Minneapolis, MN; Kimberly P. Dunsmore, Carilion Clinic, Roanoke, VA; Meenakshi Devidas and Zhiguo Chen, University of Florida, Gainesville, FL; Brent L. Wood, Seattle Children's Hospital, Seattle, WA; Natia Esiashvili, Emory University, Atlanta, GA; Nancy Eisenberg, University of New Mexico Health Sciences Center, Albuquerque, NM; Nikki Briegel, Princess Margaret Hospital for Children, Perth, Western Australia, Australia; Robert J. Hayashi, St Louis Children's Hospital, St Louis, MO; Julie M. Gastier-Foster, Nationwide Children's Hospital; Julie M. Gastier-Foster and Nyla A. Heerema, Ohio State University, Columbus, OH; Andrew J. Carroll, University of Alabama at Birmingham, Birmingham, AL; Barbara L. Asselin, University of Rochester Medical Center and Wilmot Cancer Institute, Rochester; Elizabeth A. Raetz and William L. Carroll, Perlmutter Cancer Center at NYU Langone Health, New York, NY; Paul S. Gaynon, Children's Hospital of Los Angeles, Los Angeles; Mignon L. Loh, University of California, San Francisco, San Francisco, CA; Michael J. Borowitz, Johns Hopkins University, Baltimore, MD; Karen R. Rabin, Baylor College of Medicine, Houston; Naomi J. Winick, University of Texas Southwestern, Dallas, TX; Patrick A. Zweidler-Mckay, ImmunoGen, Waltham, MA; and Stephen P. Hunger, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
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22
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Abstract
The presence of measurable ("minimal") residual disease (MRD) after induction and/or consolidation chemotherapy is a significant risk factor for relapse in patients with acute myeloid leukemia (AML). In recognition of the clinical significance of AML MRD, the European LeukemiaNet (ELN) recently recommended the establishment of CR-MRDNegative as a separate category of treatment response. This recommendation represents a major milestone in the integration of AML MRD testing in standard clinical practice. This review article summarizes the methodologies employed in AML MRD detection and their application in clinical studies that provide evidence supporting the clinical utility of AML MRD testing. Future MRD evaluations in AML likely will require an integrated approach combining multi-parameter flow cytometry and high-sensitivity molecular techniques applied to time points during and after completion of therapy in order to provide the most accurate and comprehensive assessment of treatment response.
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Gupta S, Devidas M, Loh ML, Raetz EA, Chen S, Wang C, Brown P, Carroll AJ, Heerema NA, Gastier-Foster JM, Dunsmore KP, Larsen EC, Maloney KW, Mattano LA, Winter SS, Winick NJ, Carroll WL, Hunger SP, Borowitz MJ, Wood BL. Flow-cytometric vs. -morphologic assessment of remission in childhood acute lymphoblastic leukemia: a report from the Children's Oncology Group (COG). Leukemia 2018; 32:1370-1379. [PMID: 29472723 PMCID: PMC5992047 DOI: 10.1038/s41375-018-0039-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/30/2017] [Accepted: 11/10/2017] [Indexed: 12/30/2022]
Abstract
Minimal residual disease (MRD) after initial therapy is integral to risk stratification in B-precursor and T-precursor acute lymphoblastic leukemia (B-ALL, T-ALL). Although MRD determines depth of remission, remission remains defined by morphology. We determined the outcomes of children with discordant assessments of remission by morphology vs. flow cytometry using patients age 1-30.99 years enrolled on Children's Oncology Group ALL trials who underwent bone marrow assessment at the end of induction (N = 9350). Morphologic response was assessed locally as M1 (<5% lymphoblasts; remission), M2 (5-25%), or M3 (>25%). MRD was centrally measured by flow cytometry. Overall, 19.8% of patients with M2/M3 morphology had MRD < 5%. M1 with MRD ≥ 5% was less common in B-ALL (0.9%) than T-ALL (6.9%; p < 0.0001). In B-ALL, M1/MRD ≥ 5% was associated with superior 5-year event-free survival (EFS) than M2/MRD ≥ 5% (59.1% ± 6.5% vs. 39.1% ± 7.9%; p = 0.009), but was inferior to M1/MRD < 5% (87.1% ± 0.4%; p < 0.0001). MRD levels were higher in M2/MRD ≥ 5% than M1/MRD ≥ 5% patients. In T-ALL, EFS was not significantly different between M1/MRD ≥ 5% and M2/MRD ≥ 5%. Patients with morphologic remission but MRD ≥ 5% have outcomes similar to those who fail to achieve morphological remission, and significantly inferior to those with M1 marrows and concordant MRD, suggesting that flow cytometry should augment the definition of remission in ALL.
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Affiliation(s)
- Sumit Gupta
- Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
| | - Meenakshi Devidas
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Mignon L Loh
- Division of Hematology Oncology, University of California at San Francisco, San Francisco, CA, USA
| | - Elizabeth A Raetz
- Division of Pediatric Hematology-Oncology, Primary Children's Hospital, Salt Lake City, UT, USA
| | - Si Chen
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Cindy Wang
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Patrick Brown
- Johns Hopkins University/Sidney Kimmel Cancer Center, Baltimore, MD, USA
| | - Andrew J Carroll
- Department of Genetics, Children's Hospital of Alabama, Birmingham, AL, USA
| | - Nyla A Heerema
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | | | - Kimberly P Dunsmore
- Department of Pediatrics, University of Virginia Cancer Center, Norton, VA, USA
| | - Eric C Larsen
- Maine Children's Cancer Program, Scarborough, ME, USA
| | | | | | - Stuart S Winter
- University of New Mexico Cancer Center, Albuquerque, NM, USA
| | - Naomi J Winick
- Department of Pediatrics, University of Texas Southwestern/Simmons Cancer Center, Dallas, TX, USA
| | | | - Stephen P Hunger
- Department of Genetics, Children's Hospital of Alabama, Birmingham, AL, USA
- Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Michael J Borowitz
- Division of Hematologic Pathology, John Hopkins University, Baltimore, MD, USA
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24
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Deep NPM1 Sequencing Following Allogeneic Hematopoietic Cell Transplantation Improves Risk Assessment in Adults with NPM1-Mutated AML. Biol Blood Marrow Transplant 2018; 24:1615-1620. [PMID: 29684564 DOI: 10.1016/j.bbmt.2018.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/12/2018] [Indexed: 12/12/2022]
Abstract
Relapse is the major cause of death in patients with acute myeloid leukemia (AML) after allogeneic hematopoietic cell transplantation (HCT). Measurable residual disease (MRD) detected by multiparameter flow cytometry (MFC) before and after HCT is a strong, independent risk factor for relapse. As next-generation sequencing (NGS) is increasingly applied in AML MRD detection, it remains to be determined if NGS can improve prediction of post-HCT relapse. Herein, we investigated pre-HCT MRD detected by MFC and NGS in 59 adult patients with NPM1-mutated AML in morphologic remission; 45 of the 59 had post-HCT MRD determined by MFC and NGS around day 28. Before HCT, MRD detected by MFC was the most significant risk factor for relapse (hazard ratio [HR], 4.63; P < .001), whereas MRD detected only by NGS was not. After HCT, MRD detected by either MFC or NGS was significant risk factor for relapse (HR, 4.96, P = .004 and HR, 4.36, P = .002, respectively). Combining pre- and post-HCT MRD provided the best prediction for relapse (HR, 5.25; P < .001), with a sensitivity at 83%. We conclude that NGS testing of mutated NPM1 post-HCT improves the risk assessment for relapse, whereas pre-HCT MFC testing identifies a subset of high-risk patients in whom additional therapy should be tested.
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25
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Abstract
Therapeutics that block kinases, transcriptional modifiers, immune checkpoints and other biological vulnerabilities are transforming cancer treatment. As a result, many patients achieve dramatic responses, including complete radiographical or pathological remission, yet retain minimal residual disease (MRD), which results in relapse. New functional approaches can characterize clonal heterogeneity and predict therapeutic sensitivity of MRD at a single-cell level. Preliminary evidence suggests that iterative detection, profiling and targeting of MRD would meaningfully improve outcomes and may even lead to cure.
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Affiliation(s)
- Marlise R. Luskin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA,
| | - Mark A. Murakami
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA,
| | - Scott R. Manalis
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA
- Corresponding authors: (S. R. M.) and (D. M. W.)
| | - David M. Weinstock
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA,
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, 02142, USA
- Corresponding authors: (S. R. M.) and (D. M. W.)
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26
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Wu D, Waalkes A, Penewit K, Salipante SJ. Ultrasensitive Detection of Chimerism by Single-Molecule Molecular Inversion Probe Capture and High-Throughput Sequencing of Copy Number Deletion Polymorphisms. Clin Chem 2018; 64:938-949. [PMID: 29549183 DOI: 10.1373/clinchem.2017.284737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/21/2018] [Indexed: 11/06/2022]
Abstract
BACKGROUND Genomic chimerism, the co-occurrence of cells from different genetic origins, provides important diagnostic information in diverse clinical contexts, including graft injury detection and longitudinal surveillance of hematopoietic stem cell transplantation patients, but existing assays are limiting. Here we applied single-molecule molecular inversion probes (smMIPs), a high-throughput sequencing technology combining multiplexed target capture with read quantification mediated by unique molecular identifiers, to detect chimerism based on the presence or absence of polymorphic genomic loci. METHODS We designed a 159-smMIP panel targeting 40 autosomal regions of frequent homozygous deletion across human populations and 2 sex-linked loci. We developed methods for detecting and quantitating loci absent from 1 cell population but present in another, which could be used to sensitively identify chimeric cell populations. RESULTS Unrelated individuals and first-degree relatives were highly polymorphic across the loci examined. Using synthetic DNA mixtures, limits of detection of at least 1 in 10000 chimeric cells were demonstrated without prior knowledge of genotypes, and mixtures of up to 4 separate donors could be deconvoluted. Quantitative linearity over 4 orders of magnitude and false-positive rates <1 in 85000 events were achieved. Eleven of 11 posttransplant clinical specimens from patients with hematological malignancies testing positive for residual cancer by conventional methods had detectable chimeric populations by smMIP, whereas 11 of 11 specimens testing negative by conventional methods were low-positive for chimerism by smMIP. CONCLUSIONS smMIPs are scalable to high sensitivity and large numbers of informative markers, enabling ultrasensitive chimerism detection for many clinical purposes.
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Affiliation(s)
- David Wu
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Adam Waalkes
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Kelsi Penewit
- Department of Laboratory Medicine, University of Washington, Seattle, WA
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27
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Tsitsikov E, Harris MH, Silverman LB, Sallan SE, Weinberg OK. Role of CD81 and CD58 in minimal residual disease detection in pediatric B lymphoblastic leukemia. Int J Lab Hematol 2018; 40:343-351. [DOI: 10.1111/ijlh.12795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 01/24/2018] [Indexed: 12/24/2022]
Affiliation(s)
- E. Tsitsikov
- Department of Pathology; Boston Children's Hospital; Boston MA USA
| | - M. H. Harris
- Department of Pathology; Boston Children's Hospital; Boston MA USA
| | - L. B. Silverman
- Department of Pediatric Oncology; Dana-Farber Cancer Institute; Boston MA USA
- Division of Pediatric Hematology-Oncology; Boston Children's Hospital; Boston MA USA
| | - S. E. Sallan
- Department of Pediatric Oncology; Dana-Farber Cancer Institute; Boston MA USA
- Division of Pediatric Hematology-Oncology; Boston Children's Hospital; Boston MA USA
| | - O. K. Weinberg
- Department of Pathology; Boston Children's Hospital; Boston MA USA
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28
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Bride KL, Vincent TL, Im SY, Aplenc R, Barrett DM, Carroll WL, Carson R, Dai Y, Devidas M, Dunsmore KP, Fuller T, Glisovic-Aplenc T, Horton TM, Hunger SP, Loh ML, Maude SL, Raetz EA, Winter SS, Grupp SA, Hermiston ML, Wood BL, Teachey DT. Preclinical efficacy of daratumumab in T-cell acute lymphoblastic leukemia. Blood 2018; 131:995-999. [PMID: 29305553 PMCID: PMC5833263 DOI: 10.1182/blood-2017-07-794214] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 12/11/2017] [Indexed: 12/27/2022] Open
Abstract
As a consequence of acquired or intrinsic disease resistance, the prognosis for patients with relapsed or refractory T-cell acute lymphoblastic leukemia (T-ALL) is dismal. Novel, less toxic drugs are clearly needed. One of the most promising emerging therapeutic strategies for cancer treatment is targeted immunotherapy. Immune therapies have improved outcomes for patients with other hematologic malignancies including B-cell ALL; however no immune therapy has been successfully developed for T-ALL. We hypothesize targeting CD38 will be effective against T-ALL. We demonstrate that blasts from patients with T-ALL have robust surface CD38 surface expression and that this expression remains stable after exposure to multiagent chemotherapy. CD38 is expressed at very low levels on normal lymphoid and myeloid cells and on a few tissues of nonhematopoietic origin, suggesting that CD38 may be an ideal target. Daratumumab is a human immunoglobulin G1κ monoclonal antibody that binds CD38, and has been demonstrated to be safe and effective in patients with refractory multiple myeloma. We tested daratumumab in a large panel of T-ALL patient-derived xenografts (PDX) and found striking efficacy in 14 of 15 different PDX. These data suggest that daratumumab is a promising novel therapy for pediatric T-ALL patients.
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Affiliation(s)
- Karen L Bride
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Tiffaney L Vincent
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Soo-Yeon Im
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Richard Aplenc
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - David M Barrett
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - William L Carroll
- Laura and Isaac Perlmutter Cancer Center at NYU Langone, New York University, New York, NY
| | | | - Yunfeng Dai
- Department of Biostatistics, University of Florida, Gainesville, FL
| | | | | | - Tori Fuller
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Tina Glisovic-Aplenc
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Terzah M Horton
- Baylor College of Medicine Dan L. Duncan Comprehensive Cancer Center, Houston, TX
| | - Stephen P Hunger
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Mignon L Loh
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital, San Francisco, CA
| | - Shannon L Maude
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Elizabeth A Raetz
- Department of Pediatrics and Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - Stuart S Winter
- Children's Minnesota Cancer and Blood Disorders, Minneapolis, MN; and
| | - Stephan A Grupp
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Michelle L Hermiston
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital, San Francisco, CA
| | | | - David T Teachey
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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29
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Impact of pre-transplantation minimal residual disease determined by multiparameter flow cytometry on the outcome of AML patients with FLT3-ITD after allogeneic stem cell transplantation. Ann Hematol 2018; 97:967-975. [DOI: 10.1007/s00277-018-3265-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/29/2018] [Indexed: 12/20/2022]
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31
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Shaver AC, Seegmiller AC. B Lymphoblastic Leukemia Minimal Residual Disease Assessment by Flow Cytometric Analysis. Clin Lab Med 2017; 37:771-785. [DOI: 10.1016/j.cll.2017.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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How do we measure MRD in ALL and how should measurements affect decisions. Re: Treatment and prognosis? Best Pract Res Clin Haematol 2017; 30:237-248. [DOI: 10.1016/j.beha.2017.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 07/03/2017] [Indexed: 12/18/2022]
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33
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Is there a need for morphologic exam to detect relapse in AML if multi-parameter flow cytometry is employed? Leukemia 2017; 31:2536-2537. [DOI: 10.1038/leu.2017.263] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Chang YJ, Wang Y, Liu YR, Xu LP, Zhang XH, Chen H, Chen YH, Wang FR, Han W, Sun YQ, Yan CH, Tang FF, Mo XD, Liu KY, Huang XJ. Haploidentical allograft is superior to matched sibling donor allograft in eradicating pre-transplantation minimal residual disease of AML patients as determined by multiparameter flow cytometry: a retrospective and prospective analysis. J Hematol Oncol 2017; 10:134. [PMID: 28676064 PMCID: PMC5496245 DOI: 10.1186/s13045-017-0502-3] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 06/26/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND This study compared the effects of pre-transplantation minimal residual disease (pre-MRD) on outcomes in AML patients who underwent human leukocyte antigen-matched sibling donor transplantation (MSDT) or who received unmanipulated haploidentical allografts. METHODS A retrospective study (n = 339) and a prospective study (n = 340) were performed. MRD was determined using multiparameter flow cytometry. RESULTS Either after retrospective or prospective analysis, patients with negative pre-MRD (pre-MRDneg) had a lower incidence of relapse than those with positive pre-MRD (pre-MRDpos) in MSDT settings (P < 0.001 for all), but relapse was comparable in Haplo-SCT settings for patients with pre-MRDneg versus pre-MRDpos (P = 0.866 and 0.161, respectively). In either the retrospective (n = 65) or the prospective study (n = 76), pre-MRDpos subjects receiving Haplo-SCT experienced a lower incidence of relapse than those who underwent MSDT (P < 0.001 and p = 0.017, respectively). Of the patients with pre-MRDpos in either the total (n = 141) or the subgroup excluding cases which received donor lymphocyte infusion (DLI; n = 105), those who underwent MSDT had a higher incidence of relapse than those receiving haplo-SCT (P < 0.01 for all). Multivariate analysis showed that, for pre-MRDpos cases, haplo-SCT was associated with a low incidence of relapse and with better LFS and OS in either retrospective group, prospective group, combination groups, or subgroup not including cases which received DLI. CONCLUSIONS The results indicated that, for pre-MRD-positive AML patients, haplo-SCT was associated with lower incidence of relapse and better survival, suggesting a stronger anti-leukemia effect.
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Affiliation(s)
- Ying-Jun Chang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Yu Wang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Yan-Rong Liu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Lan-Ping Xu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Xiao-Hui Zhang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Huan Chen
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Yu-Hong Chen
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Feng-Rong Wang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Wei Han
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Yu-Qian Sun
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Chen-Hua Yan
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Fei-Fei Tang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Xiao-Dong Mo
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Kai-Yan Liu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China
| | - Xiao-Jun Huang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University People's Hospital & Peking University Institute of Hematology, No. 11 South Street of Xizhimen, Xicheng District, Beijing, 100044, People's Republic of China. .,Peking-Tsinghua Center for Life Sciences, Beijing, 100871, China.
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Chen X, Othus M, Wood BL, Walter RB, Percival MEM, Becker PS, Hendrie PC, Appelbaum FR, Estey EH. Flow cytometric demonstration of decrease in bone marrow leukemic blasts after ‘Day 14’ without further therapy in acute myeloid leukemia. Leuk Lymphoma 2017; 58:2717-2719. [DOI: 10.1080/10428194.2017.1307359] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Xueyan Chen
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Megan Othus
- Department of Biostatistics and Biomathematics, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Brent L. Wood
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Roland B. Walter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Mary-Elizabeth M. Percival
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Pamela S. Becker
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Paul C. Hendrie
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Frederick R. Appelbaum
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Elihu H. Estey
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
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Chen X, Wood BL. Monitoring minimal residual disease in acute leukemia: Technical challenges and interpretive complexities. Blood Rev 2017; 31:63-75. [DOI: 10.1016/j.blre.2016.09.006] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/20/2016] [Accepted: 09/30/2016] [Indexed: 01/04/2023]
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Percival ME, Lai C, Estey E, Hourigan CS. Bone marrow evaluation for diagnosis and monitoring of acute myeloid leukemia. Blood Rev 2017; 31:185-192. [PMID: 28190619 DOI: 10.1016/j.blre.2017.01.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 01/31/2017] [Indexed: 12/20/2022]
Abstract
The diagnosis of acute myeloid leukemia (AML) can be made based on peripheral blood or bone marrow blasts. In this review, we will discuss the role of bone marrow evaluation and peripheral blood monitoring in the diagnosis, management, and follow up of AML patients. For patients with circulating blasts, it is reasonable to perform the necessary studies needed for diagnosis and risk stratification, including multiparametric flow cytometry, cytogenetics, and molecular analysis, on a peripheral blood specimen. The day 14 marrow is used to document hypocellularity in response to induction chemotherapy, but it is unclear if that assessment is necessary as it often does not affect immediate management. Currently, response assessments performed at count recovery for evaluation of remission and measurable residual disease rely on bone marrow sampling. For monitoring of relapse, peripheral blood evaluation may be adequate, but the sensitivity of bone marrow testing is in some cases superior. While bone marrow evaluation can certainly be avoided in particular situations, this cumbersome and uncomfortable procedure currently remains the de facto standard for response assessment.
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Affiliation(s)
- Mary-Elizabeth Percival
- Department of Medicine, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
| | - Catherine Lai
- Myeloid Malignancies Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Elihu Estey
- Department of Medicine, University of Washington, Seattle, WA, USA; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Christopher S Hourigan
- Myeloid Malignancies Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
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Milano F, Gooley T, Wood B, Woolfrey A, Flowers ME, Doney K, Witherspoon R, Mielcarek M, Deeg JH, Sorror M, Dahlberg A, Sandmaier BM, Salit R, Petersdorf E, Appelbaum FR, Delaney C. Cord-Blood Transplantation in Patients with Minimal Residual Disease. N Engl J Med 2016; 375:944-53. [PMID: 27602666 PMCID: PMC5513721 DOI: 10.1056/nejmoa1602074] [Citation(s) in RCA: 316] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND The majority of patients in need of a hematopoietic-cell transplant do not have a matched related donor. Data are needed to inform the choice among various alternative donor-cell sources. METHODS In this retrospective analysis, we compared outcomes in 582 consecutive patients with acute leukemia or the myelodysplastic syndrome who received a first myeloablative hematopoietic-cell transplant from an unrelated cord-blood donor (140 patients), an HLA-matched unrelated donor (344), or an HLA-mismatched unrelated donor (98). RESULTS The relative risks of death and relapse between the cord-blood group and the two other unrelated-donor groups appeared to vary according to the presence of minimal residual disease status before transplantation. Among patients with minimal residual disease, the risk of death was higher in the HLA-mismatched group than in the cord-blood group (hazard ratio, 2.92; 95% confidence interval [CI], 1.52 to 5.63; P=0.001); the risk was also higher in the HLA-matched group than in the cord-blood group but not significantly so (hazard ratio, 1.69; 95% CI, 0.94 to 3.02; P=0.08). Among patients without minimal residual disease, the hazard ratios were lower (hazard ratio in the HLA-mismatched group, 1.36; 95% CI, 0.76 to 2.46; P=0.30; hazard ratio in the HLA-matched group, 0.78; 95% CI, 0.48 to 1.28; P=0.33). The risk of relapse among patients with minimal residual disease was significantly higher in the two unrelated-donor groups than in the cord-blood group (hazard ratio in the HLA-mismatched group, 3.01; 95% CI, 1.22 to 7.38; P=0.02; hazard ratio in the HLA-matched group, 2.92; 95% CI, 1.34 to 6.35; P=0.007). Among patients without minimal residual disease, the magnitude of these associations was lower (hazard ratio in the HLA-mismatched group, 1.28; 95% CI, 0.51 to 3.25; P=0.60; hazard ratio in the HLA-matched group, 1.30; 95% CI, 0.65 to 2.58; P=0.46). CONCLUSIONS Our data suggest that among patients with pretransplantation minimal residual disease, the probability of overall survival after receipt of a transplant from a cord-blood donor was at least as favorable as that after receipt of a transplant from an HLA-matched unrelated donor and was significantly higher than the probability after receipt of a transplant from an HLA-mismatched unrelated donor. Furthermore, the probability of relapse was lower in the cord-blood group than in either of the other groups.
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Affiliation(s)
- Filippo Milano
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Ted Gooley
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Brent Wood
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Ann Woolfrey
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Mary E Flowers
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Kristine Doney
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Robert Witherspoon
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Marco Mielcarek
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Joachim H Deeg
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Mohamed Sorror
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Ann Dahlberg
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Brenda M Sandmaier
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Rachel Salit
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Effie Petersdorf
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Frederick R Appelbaum
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
| | - Colleen Delaney
- From the Clinical Research Division, Fred Hutchinson Cancer Research Center (F.M., T.G., A.W., M.E.F., K.D., R.W., M.M., J.H.D., M.S., A.D., B.M.S., R.S., E.P., F.R.A., C.D.), and the Departments of Medicine (F.M., B.W., M.E.F., M.M., J.H.D., M.S., B.M.S., R.S., E.P., F.R.A.) and Pediatrics (A.W., A.D., C.D.), University of Washington - both in Seattle
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Vrotsos E, Gorgan M, DiGiuseppe JA. Detection of small abnormal B-Lymphoblast populations at diagnosis of chronic myelogenous leukemia, BCR-ABL1+: Incidence, phenotypic features, and clinical implications. CYTOMETRY PART B-CLINICAL CYTOMETRY 2015; 92:275-278. [PMID: 25916436 DOI: 10.1002/cyto.b.21250] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/04/2015] [Accepted: 04/20/2015] [Indexed: 11/12/2022]
Abstract
BACKGROUND According to the 2008 World Health Organization (WHO) Classification of Tumors of the Haematopoietic and Lymphoid Tissues, the finding of B lymphoblasts in the blood or bone marrow of a patient with chronic myelogenous leukemia, BCR-ABL1+ (CML) should raise a concern for progression of the disease to B-lymphoblastic blast phase. Data addressing the incidence and phenotypic features of abnormal B lymphoblasts in CML, and whether the detection of B lymphoblasts inexorably heralds blast phase in CML, though, are limited. METHODS We reviewed a consecutive series of patients with newly diagnosed CML who had undergone bone marrow examination with flow cytometric immunophenotyping. Polychromatic immunophenotyping data were reviewed, and clinical follow-up data were obtained. RESULTS A precursor B-cell population with an abnormal composite immunophenotype was detected in 4 of 36 (11.1%) diagnostic bone marrow samples, at levels ranging from 0.01% to 0.30% of viable single cells acquired. The most common phenotypic aberrations were abnormally bright expression of CD10 and CD19 (seen in four and three cases, respectively), and abnormally dim expression of CD38 (seen in four cases). All three patients with adequate clinical follow-up have achieved and maintained a deep or major molecular response with a tyrosine kinase inhibitor, and none has progressed to B-lymphoblastic blast phase (follow-up duration: 17-46 months). CONCLUSIONS In chronic-phase CML, a small (<0.5%) abnormal B-lymphoblast population is present in a significant minority of diagnostic bone marrow samples, but does not inevitably herald progression to B-lymphoblastic blast phase. © 2015 International Clinical Cytometry Society.
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Affiliation(s)
- Elena Vrotsos
- Department of Pathology & Laboratory Medicine, Hartford Hospital, Hartford, Connecticut
| | - Maria Gorgan
- Department of Pathology & Laboratory Medicine, Hartford Hospital, Hartford, Connecticut
| | - Joseph A DiGiuseppe
- Department of Pathology & Laboratory Medicine, Hartford Hospital, Hartford, Connecticut
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40
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Wood BL. Principles of minimal residual disease detection for hematopoietic neoplasms by flow cytometry. CYTOMETRY PART B-CLINICAL CYTOMETRY 2015; 90:47-53. [PMID: 25906832 DOI: 10.1002/cyto.b.21239] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/09/2015] [Accepted: 03/18/2015] [Indexed: 01/22/2023]
Abstract
Flow cytometry has become an indispensible tool for the diagnosis and classification of hematopoietic neoplasms. The ability to rapidly distinguish cellular subpopulations via multiparametric assessment of quantitative differences in antigen expression on single cells and enumerate the relative sizes of the resulting subpopulations is a key feature of the technology. More recently, these capabilities have been expanded to include the identification and enumeration of rare subpopulations within complex cellular mixtures, for example, blood or bone marrow, leading to the application for post-therapeutic monitoring or minimal residual disease detection. This review will briefly present the principles to be considered in the construction and use of flow cytometric assays for minimal residual disease detection including the use of informative antibody combinations, the impact of immunophenotypic instability, enumeration, assay sensitivity, and reproducibility.
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Affiliation(s)
- Brent L Wood
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington.,Seattle Cancer Care Alliance, Seattle, Washington
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Karawajew L, Dworzak M, Ratei R, Rhein P, Gaipa G, Buldini B, Basso G, Hrusak O, Ludwig WD, Henze G, Seeger K, von Stackelberg A, Mejstrikova E, Eckert C. Minimal residual disease analysis by eight-color flow cytometry in relapsed childhood acute lymphoblastic leukemia. Haematologica 2015; 100:935-44. [PMID: 26001791 DOI: 10.3324/haematol.2014.116707] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 04/30/2015] [Indexed: 01/17/2023] Open
Abstract
Multiparametric flow cytometry is an alternative approach to the polymerase chain reaction method for evaluating minimal residual disease in treatment protocols for primary acute lymphoblastic leukemia. Given considerable differences between primary and relapsed acute lymphoblastic leukemia treatment regimens, flow cytometric assessment of minimal residual disease in relapsed leukemia requires an independent comprehensive investigation. In the present study we addressed evaluation of minimal residual disease by flow cytometry in the clinical trial for childhood relapsed acute lymphoblastic leukemia using eight-color flow cytometry. The major challenge of the study was to reliably identify low amounts of residual leukemic cells against the complex background of regeneration, characteristic of follow-up samples during relapse treatment. In a prospective study of 263 follow-up bone marrow samples from 122 patients with B-cell precursor acute lymphoblastic leukemia, we tested various B-cell markers, adapted the antibody panel to the treatment protocol, and evaluated its performance by a blinded parallel comparison with the polymerase chain reaction data. The resulting eight-color single-tube panel showed a consistently high overall concordance (P<0.001) and, under optimal conditions, sensitivity similar to that of the reference polymerase chain reaction method. Overall, evaluation of minimal residual disease by flow cytometry can be successfully integrated into the clinical management of relapsed childhood acute lymphoblastic leukemia either as complementary to the polymerase chain reaction or as an independent risk stratification tool. ALL-REZ BFM 2002 clinical trial information: NCT00114348.
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Affiliation(s)
- Leonid Karawajew
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
| | - Michael Dworzak
- St. Anna Children's Hospital and Children's Cancer Research Institute, Department of Pediatrics, Medical University of Vienna, Austria
| | - Richard Ratei
- Robert-Roessle-Clinic in the HELIOS Klinikum Berlin, Germany
| | - Peter Rhein
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
| | - Giuseppe Gaipa
- Tettamanti Research Center, Department of Pediatrics, University of Milano-Bicocca, Ospedale San Gerardo, Monza, Italy
| | - Barbara Buldini
- Laboratory of Pediatric Onco-Hematology, Department of Pediatrics, University Hospital of Padova, Italy
| | - Giuseppe Basso
- Laboratory of Pediatric Onco-Hematology, Department of Pediatrics, University Hospital of Padova, Italy
| | - Ondrej Hrusak
- Department of Pediatric Hematology and Oncology, Charles University 2 Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | | | - Günter Henze
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
| | - Karl Seeger
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
| | - Arend von Stackelberg
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
| | - Ester Mejstrikova
- Department of Pediatric Hematology and Oncology, Charles University 2 Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Cornelia Eckert
- Department of Pediatric Oncology/Hematology, Charité Universitätsmedizin, Berlin, Germany
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Becker PS, Medeiros BC, Stein AS, Othus M, Appelbaum FR, Forman SJ, Scott BL, Hendrie PC, Gardner KM, Pagel JM, Walter RB, Parks C, Wood BL, Abkowitz JL, Estey EH. G-CSF priming, clofarabine, and high dose cytarabine (GCLAC) for upfront treatment of acute myeloid leukemia, advanced myelodysplastic syndrome or advanced myeloproliferative neoplasm. Am J Hematol 2015; 90:295-300. [PMID: 25545153 DOI: 10.1002/ajh.23927] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/20/2014] [Indexed: 11/11/2022]
Abstract
Prior study of the combination of clofarabine and high dose cytarabine with granulocyte colony-stimulating factor (G-CSF) priming (GCLAC) in relapsed or refractory acute myeloid leukemia resulted in a 46% rate of complete remission despite unfavorable risk cytogenetics. A multivariate analysis demonstrated that the remission rate and survival with GCLAC were superior to FLAG (fludarabine, cytarabine, G-CSF) in the relapsed setting. We therefore initiated a study of the GCLAC regimen in the upfront setting in a multicenter trial. The objectives were to evaluate the rates of complete remission (CR), overall and relapse-free survival (OS and RFS), and toxicity of GCLAC. Clofarabine was administered at 30 mg m(-2) day(-1) × 5 and cytarabine at 2 g m(-2) day(-1) × 5 after G-CSF priming in 50 newly-diagnosed patients ages 18-64 with AML or advanced myelodysplastic syndrome (MDS) or advanced myeloproliferative neoplasm (MPN). Responses were assessed in the different cytogenetic risk groups and in patients with antecedent hematologic disorder. The overall CR rate was 76% (95% confidence interval [CI] 64-88%) and the CR + CRp (CR with incomplete platelet count recovery) was 82% (95% CI 71-93%). The CR rate was 100% for patients with favorable, 84% for those with intermediate, and 62% for those with unfavorable risk cytogenetics. For patients with an antecedent hematologic disorder (AHD), the CR rate was 65%, compared to 85% for those without an AHD. The 60 day mortality was 2%. Thus, front line GCLAC is a well-tolerated, effective induction regimen for AML and advanced myelodysplastic or myeloproliferative disorders.
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Affiliation(s)
- Pamela S. Becker
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
| | - Bruno C. Medeiros
- Division of Hematology; Department of Medicine; Stanford School of Medicine; Palo Alto California
| | - Anthony S. Stein
- Department of Hematology and Hematopoietic Cell Transplantation; City of Hope Duarte California
| | - Megan Othus
- Public Health Sciences Division; Fred Hutchinson Cancer Research Center; Seattle Washington
| | - Frederick R. Appelbaum
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
- Division of Medical Oncology, Department of Medicine; University of Washington; Seattle Washington
| | - Stephen J. Forman
- Department of Hematology and Hematopoietic Cell Transplantation; City of Hope Duarte California
| | - Bart L. Scott
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
- Division of Medical Oncology, Department of Medicine; University of Washington; Seattle Washington
| | - Paul C. Hendrie
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
| | - Kelda M. Gardner
- Division of Medical Oncology, Department of Medicine; University of Washington; Seattle Washington
| | - John M. Pagel
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
- Division of Medical Oncology, Department of Medicine; University of Washington; Seattle Washington
| | - Roland B. Walter
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
| | - Cynthia Parks
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
| | - Brent L. Wood
- Department of Laboratory Medicine; University of Washington; Seattle Washington
| | - Janis L. Abkowitz
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
| | - Elihu H. Estey
- Division of Hematology, Department of Medicine; University of Washington; Seattle Washington
- Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
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Detection of minimal residual disease in NPM1-mutated acute myeloid leukemia by next-generation sequencing. Mod Pathol 2014; 27:1438-46. [PMID: 24743218 PMCID: PMC4201902 DOI: 10.1038/modpathol.2014.57] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/15/2014] [Accepted: 02/18/2014] [Indexed: 01/08/2023]
Abstract
Detection of minimal residual disease predicts adverse outcome in patients with acute myeloid leukemia. Currently, minimal residual disease may be detected by RQ-PCR or flow cytometry, both of which have practical and diagnostic limitations. Here, we describe a next-generation sequencing assay for minimal residual disease detection in NPM1-mutated acute myeloid leukemia, which encompasses ∼60% of patients with normal karyotype acute myeloid leukemia. Exon 12 of NPM1 was PCR amplified using sequencing adaptor-linked primers and deep sequenced to enable detection of low-prevalence, acute myeloid leukemia-specific activating mutations. We benchmarked our results against flow cytometry, the standard of care for acute myeloid leukemia minimal residual disease diagnosis at our institution. The performance of both approaches was evaluated using defined dilutions of an NPM1 mutation-positive cell line and longitudinal clinical samples from acute myeloid leukemia patients. Using defined control material, we found this assay sensitive to approximately 0.001% mutant cells, outperforming flow cytometry by an order of magnitude. Next-generation sequencing was precise and semiquantitative over four orders of magnitude. In 22 longitudinal samples from six acute myeloid leukemia patients, next-generation sequencing detected minimal residual disease in all samples deemed negative by flow cytometry. Further, in one-third of patients, sequencing detected alternate NPM1 mutations in addition to the patient's index mutation, consistent with tumor heterogeneity. Next-generation sequencing provides information without prior knowledge of NPM1 mutation subtype or validation of allele-specific probes as required for RQ-PCR assays, and without generation and interpretation of complex multidimensional flow cytometry data. This approach may complement current technologies to enhance patient-specific clinical decision-making.
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