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Voso MT, Ferrara F, Galimberti S, Rambaldi A, Venditti A. Diagnostic Workup of Acute Myeloid Leukemia: What Is Really Necessary? An Italian Survey. Front Oncol 2022; 12:828072. [PMID: 35251997 PMCID: PMC8893956 DOI: 10.3389/fonc.2022.828072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/26/2022] [Indexed: 11/23/2022] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous disease with a wide variety of clinical presentations, morphological features, and immunophenotypes. The diagnostic approaches to AML that are adopted in Italy have been explored using an online Delphi-based process to expand the global discussion on mandatory tests for the correct diagnosis and, consequently, for optimal management of AML in clinical practice. The final results of the panel of Italian hematologists involved in this work highlight the importance of genetic evaluation for classification and risk stratification and firmly establish that karyotyping, fluorescence in situ hybridization in cases with non-evaluable karyotype, and molecular tests must be performed in every case of AML, regardless of age. Obtaining clinically relevant genetic data at diagnosis is the basis for the success of patient-tailored therapy. The Italian specialists also confirm the role of multidisciplinary diagnostics for AML, now mandatory and expected to become more important in the future context of “precision” medicine.
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Affiliation(s)
- Maria Teresa Voso
- Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
- *Correspondence: Maria Teresa Voso,
| | | | - Sara Galimberti
- Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Alessandro Rambaldi
- Department of Oncology-Hematology, University of Milan, Milan, Italy
- Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | - Adriano Venditti
- Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
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Balagopal V, Hantel A, Kadri S, Steinhardt G, Zhen CJ, Kang W, Wanjari P, Ritterhouse LL, Stock W, Segal JP. Measurable residual disease monitoring for patients with acute myeloid leukemia following hematopoietic cell transplantation using error corrected hybrid capture next generation sequencing. PLoS One 2019; 14:e0224097. [PMID: 31658273 PMCID: PMC6816574 DOI: 10.1371/journal.pone.0224097] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/05/2019] [Indexed: 12/22/2022] Open
Abstract
Improved systems for detection of measurable residual disease (MRD) in acute myeloid leukemia (AML) are urgently needed, however attempts to utilize broad-scale next-generation sequencing (NGS) panels to perform multi-gene surveillance in AML post-induction have been stymied by persistent premalignant mutation-bearing clones. We hypothesized that this technology may be more suitable for evaluation of fully engrafted patients following hematopoietic cell transplantation (HCT). To address this question, we developed a hybrid-capture NGS panel utilizing unique molecular identifiers (UMIs) to detect variants at 0.1% VAF or below across 22 genes frequently mutated in myeloid disorders and applied it to a retrospective sample set of blood and bone marrow DNA samples previously evaluated as negative for disease via standard-of-care short tandem repeat (STR)-based engraftment testing and hematopathology analysis in our laboratory. Of 30 patients who demonstrated trackable mutations in the 22 genes at eventual relapse by standard NGS analysis, we were able to definitively detect relapse-associated mutations in 18/30 (60%) at previously disease-negative timepoints collected 20-100 days prior to relapse date. MRD was detected in both bone marrow (15/28, 53.6%) and peripheral blood samples (9/18, 50%), while showing excellent technical specificity in our sample set. We also confirmed the disappearance of all MRD signal with increasing time prior to relapse (>100 days), indicating true clinical specificity, even using genes commonly associated with clonal hematopoiesis of indeterminate potential (CHIP). This study highlights the efficacy of a highly sensitive, NGS panel-based approach to early detection of relapse in AML and supports the clinical validity of extending MRD analysis across many genes in the post-transplant setting.
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Affiliation(s)
- Vidya Balagopal
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - Andrew Hantel
- Department of Medicine, Section of Hematology/Oncology, The University of Chicago, Chicago, Illinois, United States of America
| | - Sabah Kadri
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - George Steinhardt
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - Chao Jie Zhen
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - Wenjun Kang
- Center for Research Informatics, The University of Chicago, Chicago, Illinois, United States of America
| | - Pankhuri Wanjari
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - Lauren L. Ritterhouse
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
| | - Wendy Stock
- Department of Medicine, Section of Hematology/Oncology, The University of Chicago, Chicago, Illinois, United States of America
| | - Jeremy P. Segal
- Department of Pathology, Division of Genomic and Molecular Pathology, The University of Chicago, Chicago, Illinois, United States of America
- * E-mail:
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Salehzadeh S, Guerrini F, Pizzano U, Grassi S, Ciabatti E, Iovino L, Buda G, Caracciolo F, Benedetti E, Orciuolo E, Pelosini M, Consani G, Carulli G, Metelli MR, Martini F, Mazziotta F, Mazzantini E, Rossi P, Tavarozzi R, Ricci F, Petrini M, Galimberti S. The assessment of minimal residual disease versus that of somatic mutations for predicting the outcome of acute myeloid leukemia patients. Cancer Cell Int 2019; 19:83. [PMID: 30992690 PMCID: PMC6449954 DOI: 10.1186/s12935-019-0807-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 03/28/2019] [Indexed: 12/22/2022] Open
Abstract
Background In addition to morphological and cytogenetic features, acute myeloid leukemias are characterized by mutations that can be used for target-therapy; also the minimal/measurable residual disease (MRD) could be an important prognostic factor. The purpose of this retrospective study was to investigate if somatic mutations could represent an additional prognostic value in respect of MRD alone. Method At baseline, 98 patients were tested for NPM1, FLT3, and for WT1 expression; 31 for ASXL1, TET2, IDH1, IDH2, N-RAS, WT1, c-KIT, RUNX1, and DNMT3A. The same genes have been also tested after induction and consolidation. Results Overall, 60.2% of our patients resulted mutated: 24.5% carried mutations of FLT3-ITD, 38.7% of NPM1, 48.4% of c-KIT, 25.8% of N-RAS and 19.3% of IDH2. The probability of achieving a complete response (CR) was higher for younger patients, with low ELN risk score, NPM1-mutated, with low WT1 levels, and without FLT3. The presence of additional mutations represented a poor predictive factor: only 19% of these cases achieved CR in comparison to 43% of subjects without any of it. Concerning survival, it was conditioned by a lower ELN risk score, younger age, reduction > 1 log of the NPM1 mutational burden, disappearance of FLT3 mutations and lower WT1 expression. Regarding the role of the additional mutations, they impaired the outcome of 20% of the already MRD-negative patients. Concerning the possibility of predicting relapse, we observed an increase of the NPM1 mutational burden at the time-point immediately preceding the relapse (about 2 months earlier) in 50% of subjects. Similarly concerning WT1, an increase of its expression anticipated disease recurrence in 64% of cases. Conclusions We demonstrated that additional somatic mutations are able to impair outcome of the already MRD-negative subjects. About MRD, we suggest a prognostic role also for the WT1 expression. Finally, we considered as relevant the assessment of NPM1 quantity clearance instead of the presence/absence of mutations alone. Still remains in doubt the utility in terms of long-term prognosis of a baseline more complex mutational screening; we could hypothesize that it would be useful for those patients where other markers are not available or who reached the MRD negativity. Electronic supplementary material The online version of this article (10.1186/s12935-019-0807-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Serena Salehzadeh
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy.,4University of Rome Tor Vergata, Rome, Italy.,5Ospedale S. Chiara, UO Ematologia, Via Roma, 67, 56126 Pisa, Italy
| | - Francesca Guerrini
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Umberto Pizzano
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Susanna Grassi
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Elena Ciabatti
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Lorenzo Iovino
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Gabriele Buda
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Francesco Caracciolo
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Edoardo Benedetti
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Enrico Orciuolo
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Matteo Pelosini
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Giovanni Consani
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Giovanni Carulli
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | | | - Francesca Martini
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Francesco Mazziotta
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy.,2GeNOMEC School of Doctorate, University of Siena, Siena, Italy
| | - Elisa Mazzantini
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Pietro Rossi
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Rita Tavarozzi
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Federica Ricci
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Mario Petrini
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
| | - Sara Galimberti
- 1Department of Clinical and Experimental Medicine, Section of Hematology, University of Pisa, Pisa, Italy
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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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