1
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Krigstein M, Iland HJ, Wei AH. Applying molecular measurable residual disease testing in acute myeloid leukaemia. Pathology 2023; 55:1-7. [PMID: 36503638 DOI: 10.1016/j.pathol.2022.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022]
Abstract
Molecular testing in acute myeloid leukaemia (AML) has continued to dramatically advance in recent years, facilitating the ability to detect residual disease at exponentially lower levels. With the advent of the recently updated ELN consensus recommendations, there is increasing complexity to ordering and interpreting measurable residual disease (MRD) assays in AML. We outline the technology itself in conjunction with the relevant testing timepoints, clinically significant thresholds and potential prognostic and therapeutic significance of MRD testing for the major molecular targets in AML. This practical overview should assist haematologists in incorporating molecular MRD assays routinely into their personalised AML clinical management.
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Affiliation(s)
- Michael Krigstein
- Department of Haematology, St Vincent's Hospital, Sydney, NSW, Australia.
| | - Harry J Iland
- Department of Haematology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Andrew H Wei
- Department of Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Vic, Australia
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2
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Shi Y, Xue Y, Wang C, Yu L. Nucleophosmin 1: from its pathogenic role to a tantalizing therapeutic target in acute myeloid leukemia. Hematology 2022; 27:609-619. [PMID: 35621728 DOI: 10.1080/16078454.2022.2067939] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Nucleophosmin 1 (NPM1, also known as B23) is a multifunctional protein involved in a variety of cellular processes, including ribosomal maturation, centrosome replication, maintenance of genomic stability, cell cycle control, and apoptosis. NPM1 is the most commonly mutated gene in adult acute myeloid leukemia (AML) and is present in approximately 40% of all AML cases. The underlying mechanisms of mutant NPM1 (NPM1mut) in leukemogenesis remain unclear. This review summarizes the structure and physiological function of NPM1, mechanisms underlying the pathogenesis of NPM1-mutated AML, and the potential role of NPM1 as a therapeutic target. It is reported that dysfunctional NPM1 might cause AML pathogenesis via its role as a protein chaperone, inhibiting differentiation of leukemia stem cells and regulation of non-coding RNAs. Besides conventional chemotherapies, NPM1 is a promising therapeutic target against AML that warrants further investigation. NPM1-based therapeutic strategies include inducing nucleolar relocalisation of NPM1 mutants, interfering with NPM1 oligomerization, and NPM1 as an immune response target.
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Affiliation(s)
- Yuye Shi
- Department of Hematology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, People's Republic of China.,Department of Hematology, The Huaian Clinical College of Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Yuhao Xue
- Department of Hematology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, People's Republic of China
| | - Chunling Wang
- Department of Hematology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, People's Republic of China.,Department of Hematology, The Huaian Clinical College of Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Liang Yu
- Department of Hematology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, People's Republic of China.,Department of Hematology, The Huaian Clinical College of Xuzhou Medical University, Xuzhou, People's Republic of China
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3
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The Role of Nucleophosmin 1 ( NPM1) Mutation in the Diagnosis and Management of Myeloid Neoplasms. LIFE (BASEL, SWITZERLAND) 2022; 12:life12010109. [PMID: 35054502 PMCID: PMC8780493 DOI: 10.3390/life12010109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 11/17/2022]
Abstract
Nucleophosmin (NPM1) is a multifunctional protein with both proliferative and growth-suppressive roles in the cell. In humans, NPM1 is involved in tumorigenesis via chromosomal translocations, deletions, or mutation. Acute myeloid leukemia (AML) with mutated NPM1, a distinct diagnostic entity by the current WHO Classification of myeloid neoplasm, represents the most common diagnostic subtype in AML and is associated with a favorable prognosis. The persistence of NPM1 mutation in AML at relapse makes this mutation an ideal target for minimal measurable disease (MRD) detection. The clinical implication of this is far-reaching because NPM1-mutated AML is currently classified as being of standard risk, with the best treatment strategy (transplantation versus chemotherapy) yet undefined. Myeloid neoplasms with NPM1 mutations and <20% blasts are characterized by an aggressive clinical course and a rapid progression to AML. The pathological classification of these cases remains controversial. Future studies will determine whether NPM1 gene mutation may be sufficient for diagnosing NPM1-mutated AML independent of the blast count. This review aims to summarize the role of NPM1 in normal cells and in human cancer and discusses its current role in clinical management of AML and related myeloid neoplasms.
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4
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Austin AE, Byrne M. Detecting and preventing post-hematopoietic cell transplant relapse in AML. Curr Opin Hematol 2021; 28:380-388. [PMID: 34534984 DOI: 10.1097/moh.0000000000000686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Relapsed disease is the primary cause of mortality for acute myeloid leukemia (AML) patients after allogeneic hematopoietic cell transplantation (HCT). This review outlines the most recent advances in the detection and prevention of AML relapse following allogeneic HCT. RECENT FINDINGS Conventional methods for predicting post-HCT relapse rely on the molecular and cytogenetics features present at diagnosis. These methods are slow to reflect a growing understanding of the molecular heterogeneity of AML and impact of new therapies on post-HCT outcomes. The use of measurable residual disease (MRD) techniques, including multiparameter flow cytometry and molecular testing, may improve the prognostic ability of these models and should be incorporated into post-HCT surveillance whenever possible.In the post-HCT setting, FLT3 inhibitor maintenance data indicate that effective therapies can improve post-HCT outcomes. Maintenance data with DNA methyltransferase inhibitor monotherapy is less compelling and outcomes may improve with combinations. Early interventions directed at preemptive management of MRD may further improve post-HCT outcomes. SUMMARY Post-HCT AML relapse prevention has evolved to include more sensitive measures of disease detection and novel therapies that may improve outcomes of poor-risk AML patients. Additional work is needed to maintain this progress.
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Affiliation(s)
| | - Michael Byrne
- Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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5
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Yu T, Chi J, Wang L. Clinical values of gene alterations as marker of minimal residual disease in non-M3 acute myeloid leukemia. Hematology 2021; 26:848-859. [PMID: 34674615 DOI: 10.1080/16078454.2021.1990503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Acute myeloid leukemia (AML) is a malignant disease of the hematopoietic system. Residual leukemic cells after treatment are associated with relapse. Thus, detecting minimal residual disease (MRD) is significant. Major techniques for MRD assessment include multiparameter flow cytometry (MFC), polymerase chain reaction (PCR), and next-generation sequencing (NGS). At a molecular level, AML is the consequence of collaboration of several gene alterations. Some of these gene alterations can also be used as MRD markers to evaluate the level of residual leukemic cells by PCR and NGS. However, when as MRD markers, different gene alterations have different clinical values. This paper aims to summarize the characteristics of various MRD markers, so as to better predict the clinical outcome of AML patients and guide the treatment.
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Affiliation(s)
- Tingyu Yu
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Jianxiang Chi
- Center for the Study of Hematological Malignancies, Nicosia, Cyprus
| | - Li Wang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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6
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Lopez A, Patel S, Geyer JT, Racchumi J, Chadburn A, Simonson P, Ouseph MM, Inghirami G, Mencia-Trinchant N, Guzman ML, Gomez-Arteaga A, Lee S, Desai P, Ritchie EK, Roboz GJ, Tam W, Kluk MJ. Comparison of Multiple Clinical Testing Modalities for Assessment of NPM1-Mutant AML. Front Oncol 2021; 11:701318. [PMID: 34527579 PMCID: PMC8435844 DOI: 10.3389/fonc.2021.701318] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/12/2021] [Indexed: 11/13/2022] Open
Abstract
Background NPM1 mutation status can influence prognosis and management in AML. Accordingly, clinical testing (i.e., RT-PCR, NGS and IHC) for mutant NPM1 is increasing in order to detect residual disease in AML, alongside flow cytometry (FC). However, the relationship of the results from RT-PCR to traditional NGS, IHC and FC is not widely known among many practitioners. Herein, we aim to: i) describe the performance of RT-PCR compared to traditional NGS and IHC for the detection of mutant NPM1 in clinical practice, and also compare it to FC, and ii) provide our observations regarding the advantages and disadvantages of each approach in order to inform future clinical testing algorithms. Methods Peripheral blood and bone marrow samples collected for clinical testing at variable time points during patient management were tested by quantitative, real-time, RT-PCR and results were compared to findings from a Myeloid NGS panel, mutant NPM1 IHC and FC. Results RT-PCR showed superior sensitivity compared to NGS, IHC and FC with the main challenge of NGS, IHC and FC being the ability to identify a low disease burden (<0.5% NCN by RT-PCR). Nevertheless, the positive predictive value of NGS, IHC and FC were each ≥ 80% indicating that positive results by those assays are typically associated with RT-PCR positivity. IHC, unlike bulk methods (RT-PCR, NGS and FC), is able provide information regarding cellular/architectural context of disease in biopsies. FC did not identify any NPM1-mutated residual disease not already detected by RT-PCR, NGS or IHC. Conclusion Overall, our findings demonstrate that RT-PCR shows superior sensitivity compared to a traditional Myeloid NGS, suggesting the need for “deep-sequencing” NGS panels for NGS-based monitoring of residual disease in NPM1-mutant AML. IHC provides complementary cytomorphologic information to RT-PCR. Lastly, FC may not be necessary in the setting of post-therapy follow up for NPM1-mutated AML. Together, these findings can help inform future clinical testing algorithms.
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Affiliation(s)
- Amanda Lopez
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Sanjay Patel
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Julia T Geyer
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Joelle Racchumi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Amy Chadburn
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Paul Simonson
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Madhu M Ouseph
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Nuria Mencia-Trinchant
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Monica L Guzman
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Alexandra Gomez-Arteaga
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States.,Stem Cell Transplant Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Sangmin Lee
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Pinkal Desai
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Ellen K Ritchie
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Gail J Roboz
- Clinical and Translational Leukemia Program, Division of Hematology and Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Wayne Tam
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Michael J Kluk
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
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7
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Pettersson L, Johansson Alm S, Almstedt A, Chen Y, Orrsjö G, Shah-Barkhordar G, Zhou L, Kotarsky H, Vidovic K, Asp J, Lazarevic V, Saal LH, Fogelstrand L, Ehinger M. Comparison of RNA- and DNA-based methods for measurable residual disease analysis in NPM1-mutated acute myeloid leukemia. Int J Lab Hematol 2021; 43:664-674. [PMID: 34053184 DOI: 10.1111/ijlh.13608] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 05/02/2021] [Accepted: 05/06/2021] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Reverse transcriptase quantitative PCR (RT-qPCR) is considered the method of choice for measurable residual disease (MRD) assessment in NPM1-mutated acute myeloid leukemia (AML). MRD can also be determined with DNA-based methods offering certain advantages. We here compared the DNA-based methods quantitative PCR (qPCR), droplet digital PCR (ddPCR), and targeted deep sequencing (deep seq) with RT-qPCR. METHODS Of 110 follow-up samples from 30 patients with NPM1-mutated AML were analyzed by qPCR, ddPCR, deep seq, and RT-qPCR. To select DNA MRD cutoffs for bone marrow, we performed receiver operating characteristic analyses for each DNA method using prognostically relevant RT-qPCR cutoffs. RESULTS The DNA-based methods showed strong intermethod correlation, but were less sensitive than RT-qPCR. A bone marrow cutoff at 0.1% leukemic DNA for qPCR or 0.05% variant allele frequency for ddPCR and deep seq offered optimal sensitivity and specificity with respect to 3 log10 reduction of NPM1 transcripts and/or 2% mutant NPM1/ABL. With these cutoffs, MRD results agreed in 95% (191/201) of the analyses. Although more sensitive, RT-qPCR failed to detect leukemic signals in 10% of samples with detectable leukemic DNA. CONCLUSION DNA-based MRD techniques may complement RT-qPCR for assessment of residual leukemia. DNA-based methods offer high positive and negative predictive values with respect to residual leukemic NPM1 transcripts at levels of importance for response to treatment. However, moving to DNA-based MRD methods will miss a proportion of patients with residual leukemic RNA, but on the other hand some MRD samples with detectable leukemic DNA can be devoid of measurable leukemic RNA.
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Affiliation(s)
- Louise Pettersson
- Department of Clinical Sciences, Division of Pathology, Lund University, Skane University Hospital, Lund, Sweden.,Department of Pathology, Halland Hospital Halmstad, Region Halland, Halmstad, Sweden
| | - Sofie Johansson Alm
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Alvar Almstedt
- SciLife Clinical Genomics Gothenburg, Gothenburg, Sweden
| | - Yilun Chen
- Department of Clinical Sciences, Division of Oncology, Faculty of Medicine, Lund University, Lund, Sweden
| | - Gustav Orrsjö
- Section for Hematology and Coagulation, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Giti Shah-Barkhordar
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Li Zhou
- Klinisk Patologi, Region Laboratories, Region Skåne, Lund, Sweden
| | - Heike Kotarsky
- Klinisk Patologi, Region Laboratories, Region Skåne, Lund, Sweden
| | - Karina Vidovic
- Department of Clinical Sciences, Division of Pathology, Lund University, Skane University Hospital, Lund, Sweden
| | - Julia Asp
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Vladimir Lazarevic
- Department of Hematology, Oncology and Radiation Physics, Lund University, Skane University Hospital, Lund, Sweden
| | - Lao H Saal
- Department of Clinical Sciences, Division of Oncology, Faculty of Medicine, Lund University, Lund, Sweden.,Lund University Cancer Center, Medicon Village, Lund, Sweden
| | - Linda Fogelstrand
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Mats Ehinger
- Department of Clinical Sciences, Division of Pathology, Lund University, Skane University Hospital, Lund, Sweden.,Klinisk Patologi, Region Laboratories, Region Skåne, Lund, Sweden
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8
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Targeting CD300f to enhance hematopoietic stem cell transplantation in acute myeloid leukemia. Blood Adv 2021; 4:1206-1216. [PMID: 32215656 DOI: 10.1182/bloodadvances.2019001289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/19/2020] [Indexed: 12/11/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) significantly reduces the rate of relapse in acute myeloid leukemia (AML) but comes at the cost of significant treatment-related mortality. Despite the reduction in relapse overall, it remains common, especially in high-risk groups. The outcomes for patients who relapse after transplant remains very poor. A large proportion of the morbidity that prevents most patients from accessing allo-HSCT is due to toxic nonspecific conditioning agents that are required to remove recipient hematopoietic stem and progenitor cells (HSPCs), allowing for successful donor engraftment. CD300f is expressed evenly across HSPC subtypes. CD300f has transcription and protein expression equivalent to CD33 on AML. We have developed an anti-CD300f antibody that efficiently internalizes into target cells. We have generated a highly potent anti-CD300f antibody-drug conjugate (ADC) with a pyrrolobenzodiazepine warhead that selectively depletes AML cell lines and colony forming units in vitro. The ADC synergizes with fludarabine, making it a natural combination to use in a minimal toxicity conditioning regimen. Our ADC prolongs the survival of mice engrafted with human cell lines and depletes primary human AML engrafted with a single injection. In a humanized mouse model, a single injection of the ADC depletes CD34+ HSPCs and CD34+CD38-CD90+ hematopoietic stem cells. This work establishes an anti-CD300f ADC as an attractive potential therapeutic that, if validated in transplant models using a larger cohort of primary AML samples, will reduce relapse rate and toxicity for patients with AML undergoing allo-HSCT.
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9
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Luger SM. Consolidation Therapy for Acute Myeloid Leukemia: Defining a Benchmark. J Clin Oncol 2021; 39:870-875. [PMID: 33411591 DOI: 10.1200/jco.20.03142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The Oncology Grand Rounds series is designed to place original reports published in the Journal into clinical context. A case presentation is followed by a description of diagnostic and management challenges, a review of the relevant literature, and a summary of the authors' suggested management approaches. The goal of this series is to help readers better understand how to apply the results of key studies, including those published in the Journal of Clinical Oncology, to patients seen in their own clinical practice.
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Affiliation(s)
- Selina M Luger
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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10
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Loghavi S, DiNardo CD, Furudate K, Takahashi K, Tanaka T, Short NJ, Kadia T, Konopleva M, Kanagal-Shamanna R, Farnoud NR, Pierce S, Khoury JD, Jorgensen JL, Patel KP, Daver N, Yilmaz M, Medeiros LJ, Kantarjian H, Ravandi F, Wang SA. Flow cytometric immunophenotypic alterations of persistent clonal haematopoiesis in remission bone marrows of patients with NPM1-mutated acute myeloid leukaemia. Br J Haematol 2021; 192:1054-1063. [PMID: 33618432 DOI: 10.1111/bjh.17347] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/22/2020] [Accepted: 12/14/2020] [Indexed: 01/07/2023]
Abstract
Clonal haematopoiesis (CH) in patients with acute myeloid leukaemia (AML) may persist beyond attaining complete remission. From a consecutive cohort of 67 patients with nucleophosmin 1-mutated (NPM1mut ) AML, we identified 50 who achieved NPM1mut clearance and had parallel multicolour flow cytometry (MFC) and next generation sequencing (NGS). In total, 13 (26%) cleared all mutations, 37 (74%) had persistent CH frequently involving DNA methyltransferase 3α (DNMT3A,70%), tet methylcytosine dioxygenase 2 (TET2, 27%), isocitrate dehydrogenase 2 (IDH2, 19%) and IDH1 (11%). A small number (<1%) of aberrant CD34+ myeloblasts, but immunophenotypically different from original AML blasts [herein referred to as a pre-leukaemic (PL) phenotype], was detected in 17 (49%) patients with CH, but not in any patients with complete clearance of all mutations (P = 0·0037). A PL phenotype was associated with higher mutation burden (P = 0·005). Persistent IDH2 and serine and arginine-rich splicing factor 2 (SRSF2) mutations were exclusively observed in PL+ CH+ cases (P = 0·016). Persistent dysplasia was seen exclusively in cases with a PL+ phenotype (29% vs. none; P = 0·04). The PL+ phenotype did not correlate with age, intensity of induction therapy or relapse-free survival. Post-remission CH in the setting of NPM1mut clearance is common and may result in immunophenotypic changes in myeloid progenitors. It is important to not misinterpret these cells as AML measurable residual disease (MRD).
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Affiliation(s)
- Sanam Loghavi
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | | | - Ken Furudate
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA.,Department of Oral and Maxillofacial Surgery, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Koichi Takahashi
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Tomoyuki Tanaka
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Nicholas J Short
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Tapan Kadia
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Marina Konopleva
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | | | - Noushin R Farnoud
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sherry Pierce
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Joseph D Khoury
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - Jeffrey L Jorgensen
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - Keyur P Patel
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - Naval Daver
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Musa Yilmaz
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - L Jeffrey Medeiros
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - Hagop Kantarjian
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Farhad Ravandi
- The Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - Sa A Wang
- The Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
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11
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How I treat measurable (minimal) residual disease in acute leukemia after allogeneic hematopoietic cell transplantation. Blood 2020; 135:1639-1649. [PMID: 31961921 DOI: 10.1182/blood.2019003566] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/18/2020] [Indexed: 12/12/2022] Open
Abstract
Although allogeneic hematopoietic cell transplantation (allo-HCT) is currently the standard curative treatment of acute leukemia, relapse remains unacceptably high. Measurable (minimal) residual disease (MRD) after allo-HCT may be used as a predictor of impending relapse and should be part of routine follow-up for transplanted patients. Patients with MRD may respond to therapies aiming to unleash or enhance the graft-versus-leukemia effect. However, evidence-based recommendations on how to best implement MRD testing and MRD-directed therapy after allo-HCT are lacking. Here, I describe our institutional approach to MRD monitoring for preemptive MRD-triggered intervention, using patient scenarios to illustrate the discussion.
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12
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Abadir E, Gasiorowski RE, Silveira PA, Larsen S, Clark GJ. Is Hematopoietic Stem Cell Transplantation Required to Unleash the Full Potential of Immunotherapy in Acute Myeloid Leukemia? J Clin Med 2020; 9:E554. [PMID: 32085578 PMCID: PMC7073661 DOI: 10.3390/jcm9020554] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
From monoclonal antibodies (mAbs) to Chimeric Antigen Receptor (CAR) T cells, immunotherapies have enhanced the efficacy of treatments against B cell malignancies. The same has not been true for Acute Myeloid Leukemia (AML). Hematologic toxicity has limited the potential of modern immunotherapies for AML at preclinical and clinical levels. Gemtuzumab Ozogamicin has demonstrated hematologic toxicity, but the challenge of preserving normal hematopoiesis has become more apparent with the development of increasingly potent immunotherapies. To date, no single surface molecule has been identified that is able to differentiate AML from Hematopoietic Stem and Progenitor Cells (HSPC). Attempts have been made to spare hematopoiesis by targeting molecules expressed only on later myeloid progenitors as well as AML or using toxins that selectively kill AML over HSPC. Other strategies include targeting aberrantly expressed lymphoid molecules or only targeting monocyte-associated proteins in AML with monocytic differentiation. Recently, some groups have accepted that stem cell transplantation is required to access potent AML immunotherapy and envision it as a rescue to avoid severe hematologic toxicity. Whether it will ever be possible to differentiate AML from HSPC using surface molecules is unclear. Unless true specific AML surface targets are discovered, stem cell transplantation could be required to harness the true potential of immunotherapy in AML.
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Affiliation(s)
- Edward Abadir
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown 2050, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Robin E. Gasiorowski
- The University of Sydney, Camperdown 2039, NSW, Australia;
- Department of Haematology, Concord Repatriation and General Hospital, Concord 2039, NSW, Australia
| | - Pablo A. Silveira
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Stephen Larsen
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown 2050, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Georgina J. Clark
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
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Patkar N, Kodgule R, Kakirde C, Raval G, Bhanshe P, Joshi S, Chaudhary S, Badrinath Y, Ghoghale S, Kadechkar S, Khizer SH, Kannan S, Shetty D, Gokarn A, Punatkar S, Jain H, Bagal B, Menon H, Sengar M, Khattry N, Tembhare P, Subramanian P, Gujral S. Clinical impact of measurable residual disease monitoring by ultradeep next generation sequencing in NPM1 mutated acute myeloid leukemia. Oncotarget 2018; 9:36613-36624. [PMID: 30564301 PMCID: PMC6290958 DOI: 10.18632/oncotarget.26400] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 11/16/2018] [Indexed: 01/18/2023] Open
Abstract
Detection of measurable residual disease (MRD) by mutation specific techniques has prognostic relevance in NPM1 mutated AML (NPM1mut AML). However, the clinical utility of next generation sequencing (NGS) to detect MRD in AML remains unproven. We analysed the clinical significance of monitoring MRD using ultradeep NGS (NGS-MRD) and flow cytometry (FCM-MRD) in 137 samples obtained from 83 patients of NPM1mut AML at the end of induction (PI) and consolidation (PC). We could monitor 12 different types of NPM1 mutations at a sensitivity of 0.001% using NGS-MRD. We demonstrated a significant correlation between NGS-MRD and real time quantitative PCR (RQ-PCR). Based upon a one log reduction between PI and PC time points we could classify patients as NGS-MRD positive (<1log reduction) or negative (>1log reduction). NGS-MRD, FCM-MRD as well as DNMT3A mutations were predictive of inferior overall survival (OS) and relapse free survival (RFS). On a multivariate analysis NGS-MRD emerged as an independent, most important prognostic factor predictive of inferior OS (hazard ratio, 3.64; 95% confidence interval [CI] 1.58 to 8.37) and RFS (hazard ratio, 4.8; 95% CI:2.24 to 10.28). We establish that DNA based NPM1 NGS MRD is a highly useful test for prediction of relapse and survival in NPM1mut AML.
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Affiliation(s)
- Nikhil Patkar
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Rohan Kodgule
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India.,Homi Bhabha National Institute, Training School Complex, Mumbai, India
| | - Chinmayee Kakirde
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Goutham Raval
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Prasanna Bhanshe
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Swapnali Joshi
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Shruti Chaudhary
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Y Badrinath
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Sitaram Ghoghale
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Shraddha Kadechkar
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Syed Hasan Khizer
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Sadhana Kannan
- Biostatistics, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | - Dhanalaxmi Shetty
- Dept of Cytogenetics, ACTREC, Tata Memorial Centre, Navi 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
| | - 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
| | - Navin Khattry
- Adult Haematolymphoid Disease Management Group, Tata Memorial Centre, Mumbai, India
| | - Prashant Tembhare
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
| | | | - Sumeet Gujral
- Haematopathology Laboratory, ACTREC, Tata Memorial Centre, Navi Mumbai, India
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Minimal/Measurable Residual Disease Monitoring in NPM1-Mutated Acute Myeloid Leukemia: A Clinical Viewpoint and Perspectives. Int J Mol Sci 2018; 19:ijms19113492. [PMID: 30404199 PMCID: PMC6274702 DOI: 10.3390/ijms19113492] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 02/06/2023] Open
Abstract
Acute myeloid leukemia (AML) with NPM1 gene mutations is currently recognized as a distinct entity, due to its unique biological and clinical features. We summarize here the results of published studies investigating the clinical application of minimal/measurable residual disease (MRD) in patients with NPM1-mutated AML, receiving either intensive chemotherapy or hematopoietic stem cell transplantation. Several clinical trials have so far demonstrated a significant independent prognostic impact of molecular MRD monitoring in NPM1-mutated AML and, accordingly, the Consensus Document from the European Leukemia Net MRD Working Party has recently recommended that NPM1-mutated AML patients have MRD assessment at informative clinical timepoints during treatment and follow-up. However, several controversies remain, mainly with regard to the most clinically significant timepoints and the MRD thresholds to be considered, but also with respect to the optimal source to be analyzed, namely bone marrow or peripheral blood samples, and the correlation of MRD with other known prognostic indicators. Moreover, we discuss potential advantages, as well as drawbacks, of newer molecular technologies such as digital droplet PCR and next-generation sequencing in comparison to conventional RQ-PCR to quantify NPM1-mutated MRD. In conclusion, further prospective clinical trials are warranted to standardize MRD monitoring strategies and to optimize MRD-guided therapeutic interventions in NPM1-mutated AML patients.
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