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He GQ, Lei YP, Huang DW, Gao J, Yang R. Philadelphia chromosome-like acute lymphoblastic leukemia with concomitant rearrangements of CRLF2 and ABL1: a pediatric case report. BMC Pediatr 2024; 24:517. [PMID: 39127642 PMCID: PMC11316372 DOI: 10.1186/s12887-024-04991-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 08/01/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND BCR::ABL1-like or Philadelphia chromosome-like (Ph-like) acute lymphoblastic leukemia (ALL) was first reported in 2009. Ph-like ALL is characterized by gene signature similar to Philadelphia chromosome ALL, but without BCR::ABL1 fusions. Molecularly, Ph-like ALL is divided into seven categories, with CRLF2 and ABL-class rearrangements being the two most common subtypes, exhibiting alterations in distinct downstream signaling cascades. CASE PRESENTATION We report a rare case of pediatric Ph-like ALL with concomitant CRLF2 and ABL1 rearrangements. CRLF2 was fused with P2RY8, its most common fusion partner, whereas ABL1 was fused with MYO18B, a novel fusion partner that has not been previously reported. The 4-year-old female patient was treated using the national multicenter CCCG-ALL-2020 protocol with the addition of dasatinib at the end of induction when ABL1 rearrangement was confirmed by RNA-seq. Morphologically and molecularly, the patient remained in continuous remission until the last follow-up. To the best of our knowledge, this is the first case of Ph-like ALL harboring two distinct rearrangement categories. CONCLUSIONS Our results identified that ABL1 rearrangement and CRLF2 rearrangement can coexist. The application of FISH, whole transcription sequencing, PCR can help us to have a more comprehensive understanding of ALL cytogenetics and molecular biology. Further studies are needed to explore the role of targeted therapies in such rare clinical scenarios.
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Affiliation(s)
- Guo-Qian He
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, West China Second University Hospital, Ministry of Education, Sichuan University, Chengdu, China
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yu-Peng Lei
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, West China Second University Hospital, Ministry of Education, Sichuan University, Chengdu, China
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Duo-Wen Huang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, West China Second University Hospital, Ministry of Education, Sichuan University, Chengdu, China
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ju Gao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, West China Second University Hospital, Ministry of Education, Sichuan University, Chengdu, China
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Rong Yang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, West China Second University Hospital, Ministry of Education, Sichuan University, Chengdu, China.
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.
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2
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Moreno-Lorenzana D, Juárez-Velázquez R, Reyes-León A, Martínez-Anaya D, Juárez-Villegas L, Zapata Tarrés M, López Santiago N, Pérez-Vera P. CRLF2 and IKZF1 abnormalities in childhood hematological malignancies other than B-cell Acute Lymphoblastic Leukemia. Leuk Lymphoma 2024:1-11. [PMID: 39034479 DOI: 10.1080/10428194.2024.2378817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 07/07/2024] [Indexed: 07/23/2024]
Abstract
Rearrangements and overexpression of CRLF2 are hallmarks of poor outcomes in BCR::ABL1-like B-ALL, and CRLF2 overexpression is a high-risk marker in T-ALL. However, CRLF2 alterations in pediatric hematologic malignancies other than B-ALL have not been reported. In this study, we analyzed the CRLF2 overexpression, rearrangements (P2RY8::CRLF2 and IGH::CRLF2), activation (pSTAT5 and pERK), and the expression of dominant-negative IKZF1 isoforms (Ik6 and Ik8), implied in CRLF2 dysregulation, in 16 pediatric patients (AML, n = 9; T-ALL, n = 3; LBL, n = 2; HL, n = 1; cytopenia, n = 1). A high frequency of CRLF2 rearrangements and overexpression was found in the 16 patients: 28.6% (4/14) showed CRLF2 overexpression, 93.8% (15/16) were positive for CRLF2 total protein (cell-surface and/or cytoplasmic), while 62.5% (10/16) were positive for P2RY8::CRLF2 and 12.6% (2/16) for IGH::CRLF2. In addition, 43.8% (7/16) expressed Ik6 and Ik8 isoforms. However, only a few patients were positive for the surrogate markers pSTAT5 (14.3%; 2/14) and pERK (21.4%; 3/14).
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Affiliation(s)
- Dafné Moreno-Lorenzana
- CONAHCYT-Instituto Nacional de Pediatría, Mexico City, Mexico
- Laboratorio de Genética y Cáncer, Subdirección de Investigación Médica, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - Rocío Juárez-Velázquez
- Laboratorio de Genética y Cáncer, Subdirección de Investigación Médica, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - Adriana Reyes-León
- Laboratorio de Genética y Cáncer, Subdirección de Investigación Médica, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - Daniel Martínez-Anaya
- CONAHCYT-Instituto Nacional de Pediatría, Mexico City, Mexico
- Laboratorio de Genética y Cáncer, Subdirección de Investigación Médica, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - Luis Juárez-Villegas
- Servicio de Hemato-Oncología, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Martha Zapata Tarrés
- Coordinación de Investigación, Fundación IMSS, A.C., Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Patricia Pérez-Vera
- Laboratorio de Genética y Cáncer, Subdirección de Investigación Médica, Instituto Nacional de Pediatría, Mexico City, Mexico
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3
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Choi JK, Xiao W, Chen X, Loghavi S, Elenitoba-Johnson KS, Naresh KN, Medeiros LJ, Czader M. Fifth Edition of the World Health Organization Classification of Tumors of the Hematopoietic and Lymphoid Tissues: Acute Lymphoblastic Leukemias, Mixed-Phenotype Acute Leukemias, Myeloid/Lymphoid Neoplasms With Eosinophilia, Dendritic/Histiocytic Neoplasms, and Genetic Tumor Syndromes. Mod Pathol 2024; 37:100466. [PMID: 38460674 DOI: 10.1016/j.modpat.2024.100466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/11/2024] [Accepted: 03/01/2024] [Indexed: 03/11/2024]
Abstract
This manuscript represents a review of lymphoblastic leukemia/lymphoma (acute lymphoblastic leukemia/lymphoblastic lymphoma), acute leukemias of ambiguous lineage, mixed-phenotype acute leukemias, myeloid/lymphoid neoplasms with eosinophilia and defining gene rearrangements, histiocytic and dendritic neoplasms, and genetic tumor syndromes of the 5th edition of the World Health Organization Classification of Tumors of the Hematopoietic and Lymphoid Tissues. The diagnostic, clinicopathologic, cytogenetic, and molecular genetic features are discussed. The differences in comparison to the 4th revised edition of the World Health Organization classification of hematolymphoid neoplasms are highlighted.
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Affiliation(s)
- John K Choi
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Wenbin Xiao
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Xueyan Chen
- Section of Pathology, Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Sanam Loghavi
- Department of Hematopathology, MD Anderson Cancer Center, Houston, Texas
| | - Kojo S Elenitoba-Johnson
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kikkeri N Naresh
- Section of Pathology, Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - L Jeffrey Medeiros
- Department of Hematopathology, MD Anderson Cancer Center, Houston, Texas
| | - Magdalena Czader
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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4
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Kegyes D, Ghiaur G, Bancos A, Tomuleasa C, Gale RP. Immune therapies of B-cell acute lymphoblastic leukaemia in children and adults. Crit Rev Oncol Hematol 2024; 196:104317. [PMID: 38437908 DOI: 10.1016/j.critrevonc.2024.104317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 01/26/2024] [Accepted: 02/27/2024] [Indexed: 03/06/2024] Open
Abstract
B-cell acute lymphoblastic leukaemia (B-cell ALL) is a common haematologic cancer in children and adults. About 10 percent of children and 50 percent of adults fail to achieve a histological complete remission or subsequently relapse despite current anti-leukaemia drug therapies and/or haematopoietic cell transplants. Several new immune therapies including monoclonal antibodies and chimeric antigen receptor (CAR)-T-cells are proved safe and effective in this setting. We review data on US Food and Drug Administration (FDA)-approved immune therapies for B-cell ALL in children and adults including blinatumomab, inotuzumab ozogamicin, tisagenlecleucel, and brexucabtagene autoleucel. We also summarize pharmaco-dynamics, pharmaco-kinetics, and pharmaco-economics of these interventions.
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Affiliation(s)
- David Kegyes
- Department of Hematology-Medfuture Research Center for Advanced Medicine, Iuliu Hațieganu University of Medicine and Pharmacy Cluj Napoca, Romania; Department of Hematology, Ion Chiricuta Oncology Institute, Cluj Napoca, Romania; Academy of Romanian Scientists, Bucharest, Romania
| | - Gabriel Ghiaur
- Department of Hematology-Medfuture Research Center for Advanced Medicine, Iuliu Hațieganu University of Medicine and Pharmacy Cluj Napoca, Romania; Department of Leukemia, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University, Baltimore, MD, USA
| | - Anamaria Bancos
- Department of Hematology-Medfuture Research Center for Advanced Medicine, Iuliu Hațieganu University of Medicine and Pharmacy Cluj Napoca, Romania; Department of Hematology, Ion Chiricuta Oncology Institute, Cluj Napoca, Romania
| | - Ciprian Tomuleasa
- Department of Hematology-Medfuture Research Center for Advanced Medicine, Iuliu Hațieganu University of Medicine and Pharmacy Cluj Napoca, Romania; Department of Hematology, Ion Chiricuta Oncology Institute, Cluj Napoca, Romania; Academy of Romanian Scientists, Bucharest, Romania.
| | - Robert Peter Gale
- Centre for Haematology, Imperial College of Science, Technology and Medicine, London, UK; Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Hematology, Peking University People's Hospital, Beijing, China
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5
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He J, Munir F, Catueno S, Connors JS, Gibson A, Robusto L, McCall D, Nunez C, Roth M, Tewari P, Garces S, Cuglievan B, Garcia MB. Biological Markers of High-Risk Childhood Acute Lymphoblastic Leukemia. Cancers (Basel) 2024; 16:858. [PMID: 38473221 DOI: 10.3390/cancers16050858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/14/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
Childhood acute lymphoblastic leukemia (ALL) has witnessed substantial improvements in prognosis; however, a subset of patients classified as high-risk continues to face higher rates of relapse and increased mortality. While the National Cancer Institute (NCI) criteria have traditionally guided risk stratification based on initial clinical information, recent advances highlight the pivotal role of biological markers in shaping the prognosis of childhood ALL. This review delves into the emerging understanding of high-risk childhood ALL, focusing on molecular, cytogenetic, and immunophenotypic markers. These markers not only contribute to unraveling the underlying mechanisms of the disease, but also shed light on specific clinical patterns that dictate prognosis. The paradigm shift in treatment strategies, exemplified by the success of tyrosine kinase inhibitors in Philadelphia chromosome-positive leukemia, underscores the importance of recognizing and targeting precise risk factors. Through a comprehensive exploration of high-risk childhood ALL characteristics, this review aims to enhance our comprehension of the disease, offering insights into its molecular landscape and clinical intricacies in the hope of contributing to future targeted and tailored therapies.
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Affiliation(s)
- Jiasen He
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Faryal Munir
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Samanta Catueno
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jeremy S Connors
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Amber Gibson
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lindsay Robusto
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - David McCall
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Cesar Nunez
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Michael Roth
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Priti Tewari
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sofia Garces
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Branko Cuglievan
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Miriam B Garcia
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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6
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Gestrich CK, De Lancy SJ, Kresak A, Meyerson H, Pateva I, Yalley AK, Ryder C, Shetty S, Bledsoe J, Moore EM, Oduro KA. IGJ and SPATS2L immunohistochemistry sensitively and specifically identify BCR::ABL1+ and BCR::ABL1-like B-acute lymphoblastic leukaemia. Br J Haematol 2024; 204:229-239. [PMID: 37871900 DOI: 10.1111/bjh.19142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/25/2023]
Abstract
Therapeutic management and prognostication for patients with B-acute lymphoblastic leukaemia (B-ALL) require appropriate disease subclassification. BCR::ABL1-like B-ALL is unique in that it is defined by a gene expression profile similar to BCR::ABL1+ B-ALL rather than a unifying recurrent translocation. Current molecular/cytogenetic techniques to identify this subtype are expensive, not widely accessible, have long turnaround times and/or require an adequate liquid biopsy. We have studied a total of 118 B-ALL cases from three institutions in two laboratories to identify surrogates for BCR::ABL1+/like B-ALL. We report that immunoglobulin joining chain (IGJ) and spermatogenesis associated serine-rich 2-like (SPATS2L) immunohistochemistry (IHC) sensitively and specifically identify BCR::ABL1+/like B-ALL. IGJ IHC positivity has a sensitivity of 83%, a specificity of 95%, a positive predictive value (PPV) of 89% and a negative predictive value (NPV) of 90%. SPATS2L staining has similar sensitivity and NPV but lower specificity (85%) and PPV (70%). The presence of either IGJ or SPATS2L staining augments the sensitivity (93%) and NPV (95%). While these findings would need to be validated in larger studies, they suggest that IGJ and/or SPATS2L IHC may be utilized in identifying BCR::ABL1-like B-ALL or in selecting B-ALL cases for confirmatory molecular/genetic testing, particularly in resource-limited settings.
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Affiliation(s)
- Catherine K Gestrich
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Shanelle J De Lancy
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Adam Kresak
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Howard Meyerson
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Irina Pateva
- Division of Hematology and Oncology, Department of Pediatrics, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Akua K Yalley
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Accra, Ghana
| | - Christopher Ryder
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Shashirekha Shetty
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
| | - Jacob Bledsoe
- Department of Pathology, Boston Children Hospital, Boston, Massachusetts, USA
| | - Erika M Moore
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Kwadwo A Oduro
- Department of Pathology, University Hospitals Cleveland Medical Center, University Hospitals Rainbow Babies and Children's Hospital and Case Western Reserve University, Cleveland, Ohio, USA
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7
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Chen X, Wang W, Yeh J, Wu Y, Oehler VG, Naresh KN, Liu YJ. Clinical Validation of FusionPlex RNA Sequencing and Its Utility in the Diagnosis and Classification of Hematologic Neoplasms. J Mol Diagn 2023; 25:932-944. [PMID: 37813298 DOI: 10.1016/j.jmoldx.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 08/11/2023] [Accepted: 09/12/2023] [Indexed: 10/11/2023] Open
Abstract
Recurrent gene rearrangements result in gene fusions that encode chimeric proteins, driving the pathogenesis of many hematologic neoplasms. The fifth edition World Health Organization classification and International Consensus Classification 2022 include an expanding list of entities defined by such gene rearrangements. Therefore, sensitive and rapid methods are needed to identify a broad range of gene fusions for precise diagnosis and prognostication. In this study, we validated the FusionPlex Pan-Heme panel analysis using anchored multiplex PCR/targeted RNA next-generation sequencing for routine clinical testing. Furthermore, we assessed its utility in detecting gene fusions in myeloid and lymphoid neoplasms. The validation cohort of 61 cases demonstrated good concordance between the FusionPlex Pan-Heme panel and other methods, including chromosome analysis, fluorescence in situ hybridization, RT-PCR, and Sanger sequencing, with an analytic sensitivity and specificity of 95% and 100%, respectively. In an independent cohort of 28 patients indicated for FusionPlex testing, gene fusions were detected in 21 patients. The FusionPlex Pan-Heme panel analysis reliably detected fusion partners and patient-specific fusion sequences, allowing accurate classification of hematologic neoplasms and the discovery of new fusion partners, contributing to a better understanding of the pathogenesis of the diseases.
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Affiliation(s)
- Xueyan Chen
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington; Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Wenjing Wang
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Jeffrey Yeh
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Yu Wu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Vivian G Oehler
- Department of Medicine, University of Washington, Seattle, Washington
| | - Kikkeri N Naresh
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington; Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Yajuan J Liu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington.
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8
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Gupta DG, Varma N, Sharma P, Truica MI, Abdulkadir SA, Singh P, Singh Sachdeva MU, Naseem S, Siddiqui MR, Bose P, Binota J, Malhotra P, Khadwal A, Trehan A, Varma S. Hematological, clinical, immunophenotypic characterization, and treatment outcomes of prognostically significant genetic subtypes of B-lineage acute lymphoblastic leukemia: A report of 1021 patients from India. Cancer 2023; 129:3390-3404. [PMID: 37498973 DOI: 10.1002/cncr.34957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND The published literature on hematological, clinical, flowcytometric-immunophenotyping, and minimal residual disease outcomes of the prognostically important genetic subtypes of acute lymphoblastic leukemia (ALL) is scarce from low-income countries. For newer classifications such as BCR::ABL1-like ALLs, the scarcity of patient-level data is even more pronounced. METHODS The authors performed comprehensive detection of recurrent gene fusions and BCR::ABL1-like ALL cases followed by immunophenotypic profiling and obtained clinical outcome parameters for a large cohort (n = 1021) of patients from India. This cohort included a significant number of patients with BCR::ABL1-like ALL subtype and other genetic subtypes of ALL. RESULTS Patients with BCR::ABL1-positive and BCR::ABL1-like ALL were significantly older, had male preponderance, and expressed a higher white blood cell count than BCR::ABL1-negative cases (p < .05). Logistic regression modeling of B-lineage-ALL (B-ALL) subtypes revealed that cluster of differentiation (CD)36 is a strong statistically significant predictive marker of BCR::ABL1-like ALL (p < .05). Furthermore, patients with BCR::ABL1-like ALLs show a significantly higher frequency of CD36 expression compared to BCR::ABL1-negative ALLs (p < .05). In terms of clinical symptoms, lymphadenopathy is a strong statistically significant predictive marker in BCR::ABL1-like ALLs compared to BCR::ABL1-negative ALL cases (p < .05). In terms of treatment outcomes, minimal residual disease (MRD) positivity in BCR::ABL1-positive ALL cases were statistically significant (p < .05), and BCR::ABL1-like ALL cases had high MRD-positivity as compared to BCR::ABL1-negative ALL cases but did not show statistical significance. CONCLUSIONS The findings evince the use of novel therapies and personalized treatment regimens to improve the overall survival of the newer incorporated entities in B-ALLs. This is the first report characterizing the hematological, clinical, flowcytometric-immunophenotyping, and minimal residual disease outcomes of the prognostically significant subtypes of ALLs in patients from India. PLAIN LANGUAGE SUMMARY Characterizing the hematological, clinical, flowcytometric-immunophenotyping, and minimal residual disease outcomes of the prognostically significant subtypes (n = 1021) of acute lymphoblastic leukemia (ALLs) in patients from India. We have made two independent logistic regression models of cluster of differentiation (CD) markers and clinical symptoms to differentiate prognostically significant subtypes of ALLs. Logistic regression analysis of CD markers revealed CD36 as a strong predictor in BCR::ABL1-like ALL cases compared to BCR::ABL1-negative ALL cases. Logistic regression analysis of clinical symptoms revealed lymphadenopathy significantly predicts BCR::ABL1-like ALLs (p < .05). In terms of treatment outcomes, BCR::ABL1-positive ALL had statistically significant minimal residual disease (MRD) (p < .05), and BCR::ABL1-like ALL cases had high MRD-positivity but did not show statistical significance as compared to BCR::ABL1-negative ALLs.
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Affiliation(s)
- Dikshat Gopal Gupta
- Department of Urology and Pathology, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Neelam Varma
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Praveen Sharma
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Mihai I Truica
- Department of Urology and Pathology, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sarki A Abdulkadir
- Department of Urology and Pathology, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Parmod Singh
- Department of Anatomy, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Man Updesh Singh Sachdeva
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Shano Naseem
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Mohammad Rizwan Siddiqui
- Department of Pediatrics, Northwestern University Feinberg School of Medicine and Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Parveen Bose
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Jogeshwar Binota
- Department of Hematology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Pankaj Malhotra
- Department of Clinical Hematology and Medical Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Alka Khadwal
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Amita Trehan
- Pediatric Hematology Oncology Unit, Department of Pediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Subhash Varma
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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9
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The 5th edition of the World Health Organization Classification of Haematolymphoid Tumours: Lymphoid Neoplasms. Leukemia 2022; 36:1720-1748. [PMID: 35732829 PMCID: PMC9214472 DOI: 10.1038/s41375-022-01620-2] [Citation(s) in RCA: 1133] [Impact Index Per Article: 566.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 02/05/2023]
Abstract
We herein present an overview of the upcoming 5th edition of the World Health Organization Classification of Haematolymphoid Tumours focussing on lymphoid neoplasms. Myeloid and histiocytic neoplasms will be presented in a separate accompanying article. Besides listing the entities of the classification, we highlight and explain changes from the revised 4th edition. These include reorganization of entities by a hierarchical system as is adopted throughout the 5th edition of the WHO classification of tumours of all organ systems, modification of nomenclature for some entities, revision of diagnostic criteria or subtypes, deletion of certain entities, and introduction of new entities, as well as inclusion of tumour-like lesions, mesenchymal lesions specific to lymph node and spleen, and germline predisposition syndromes associated with the lymphoid neoplasms.
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10
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Linares Ballesteros A, Yunis LK, García J, Aponte N, Flechas J, Martinez C, Uribe G, Quintero E, Díaz A, Pardo C, Sarmiento IC, Contreras A, Yunis JJ. Philadelphia-like acute lymphoblastic leukemia: Characterization in a pediatric cohort in a referral center in Colombia. Cancer Rep (Hoboken) 2022; 5:e1587. [PMID: 34787376 PMCID: PMC9124514 DOI: 10.1002/cnr2.1587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/25/2021] [Accepted: 10/25/2021] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Philadelphia-like (Ph-like) acute lymphoblastic leukemia (ALL) is a subtype of pediatric leukemia with high risk factors and poor outcome. There are few reports of its prevalence in Latin America. AIM This study evaluated the frequency and clinical and biological characteristics of Ph-like ALL in a pediatric cancer center in Colombia. METHODS The Ph-like genetic profile was analyzed by a low-density array (LDA). Samples from patients with Ph-like ALL were analyzed by fluorescent in situ hybridization for cytokine receptor like factor 2 (CRLF2) and ABL proto-oncogene 1, non-receptor tyrosine kinase (ABL1) rearrangements. Copy number variations were assessed by multiplex ligation probe amplification. RESULTS Data from 121 patients were analyzed. Fifteen patients (12.4%) had Ph-like ALL, and these patients had significantly higher leukocyte counts at diagnosis and higher levels of minimal residual disease on days 15 and 33 of induction than patients without the Ph-like subtype. There were no significant differences in sex, age, or response to prednisone at day 8 between the two groups. CRLF2 rearrangements were identified in eight patients, and ABL1 rearrangements were identified in two patients. Other genetic alterations alone or in combination were identified in 77% of patients, including deletions in cyclin dependent kinase inhibitor 2 A/B (46.2%), IKAROS family zinc finger 1 (38.3%), and paired box 5 (30.8%). CONCLUSIONS Ph-like ALL had a 12.4% prevalence in our cohort of patients with pediatric ALL. The identification of this group of patients has importance for risk stratification and future targeted therapy.
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Affiliation(s)
- Adriana Linares Ballesteros
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
- Grupo Oncohematología PediátricaUniversidad Nacional de ColombiaBogotáColombia
| | - Luz Karime Yunis
- Servicios Médicos Yunis Turbay y Cía S.A.S. Instituto de GenéticaBogotáColombia
- Grupo de Patología MolecularUniversidad Nacional de ColombiaBogotáColombia
| | - Johnny García
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
| | - Nelson Aponte
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
| | - Jessica Flechas
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
- Grupo Oncohematología PediátricaUniversidad Nacional de ColombiaBogotáColombia
| | - Cindy Martinez
- Grupo Oncohematología PediátricaUniversidad Nacional de ColombiaBogotáColombia
| | - Gloria Uribe
- Pediatric Pathology UnitHOMI Fundación Hospital Pediatrico la MisericordiaBogotáColombia
| | - Edna Quintero
- Pediatric Pathology UnitHOMI Fundación Hospital Pediatrico la MisericordiaBogotáColombia
| | - Angela Díaz
- Servicios Médicos Yunis Turbay y Cía S.A.S. Instituto de GenéticaBogotáColombia
| | - Carlos Pardo
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
- Grupo Oncohematología PediátricaUniversidad Nacional de ColombiaBogotáColombia
| | | | - Agustin Contreras
- Pediatric Hematology/Oncology UnitHOMI Fundación Hospital Pediátrico la MisericordiaBogotáColombia
| | - Juan Jose Yunis
- Servicios Médicos Yunis Turbay y Cía S.A.S. Instituto de GenéticaBogotáColombia
- Grupo de Patología MolecularUniversidad Nacional de ColombiaBogotáColombia
- Departamento de Patología, Facultad de Medicina e Instituto de GenéticaUniversidad Nacional de ColombiaBogotáColombia
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11
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Kośmider K, Karska K, Kozakiewicz A, Lejman M, Zawitkowska J. Overcoming Steroid Resistance in Pediatric Acute Lymphoblastic Leukemia-The State-of-the-Art Knowledge and Future Prospects. Int J Mol Sci 2022; 23:ijms23073795. [PMID: 35409154 PMCID: PMC8999045 DOI: 10.3390/ijms23073795] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/20/2022] [Accepted: 03/28/2022] [Indexed: 12/13/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common malignancy among children. Despite the enormous progress in ALL therapy, resulting in achieving a 5-year survival rate of up to 90%, the ambitious goal of reaching a 100% survival rate is still being pursued. A typical ALL treatment includes three phases: remission induction and consolidation and maintenance, preceded by a prednisone prephase. Poor prednisone response (PPR) is defined as the presence of ≥1.0 × 109 blasts/L in the peripheral blood on day eight of therapy and results in significantly frequent relapses and worse outcomes. Hence, identifying risk factors of steroid resistance and finding methods of overcoming that resistance may significantly improve patients' outcomes. A mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK-ERK) pathway seems to be a particularly attractive target, as its activation leads to steroid resistance via a phosphorylating Bcl-2-interacting mediator of cell death (BIM), which is crucial in the steroid-induced cell death. Several mutations causing activation of MAPK-ERK were discovered, notably the interleukin-7 receptor (IL-7R) pathway mutations in T-cell ALL and rat sarcoma virus (Ras) pathway mutations in precursor B-cell ALL. MAPK-ERK pathway inhibitors were demonstrated to enhance the results of dexamethasone therapy in preclinical ALL studies. This report summarizes steroids' mechanism of action, resistance to treatment, and prospects of steroids therapy in pediatric ALL.
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Affiliation(s)
- Kamil Kośmider
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (K.K.); (A.K.)
| | - Katarzyna Karska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland;
| | - Agata Kozakiewicz
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (K.K.); (A.K.)
| | - Monika Lejman
- Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland;
| | - Joanna Zawitkowska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland;
- Correspondence:
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12
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Silva WF, Amano MT, Perruso LL, Cordeiro MG, Kishimoto RK, de Medeiros Leal A, Nardinelli L, Bendit I, Velloso ED, Rego EM, Rocha V. Adult acute lymphoblastic leukemia in a resource-constrained setting: outcomes after expansion of genetic evaluation. Hematology 2022; 27:396-403. [PMID: 35344469 DOI: 10.1080/16078454.2022.2052602] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is a challenging disease with a growing genetic landscape, even though there is substantial gap between developed and non-developed countries when it comes to availability of such new technologies. This manuscript reports a 5-year retrospective cohort of newly diagnosed ALL patients and their genetic findings and outcomes. An expanded genetic evaluation by using FISH and RT-PCR was implemented, aiming to identify Ph-like alterations. Patients were treated according to our local protocol, which allocated patients according to age and Philadelphia-chromosome status. A total of 104 patients was included, with median age of 37.5 years. Philadelphia chromosome was detected in 33 cases of B-lineage. Among 45 Ph-negative B-lineage, after excluding KMT2A or TCF3-PBX1 cases, we identified 9 cases with Ph-like fusion. Ph-positive and Ph-like patients had higher initial WBC (p = 0.06). Out of 104 cases, two cases did not start chemotherapy and an early death rate of 10.8% was found. Allogeneic transplantation was performed in 18 cases, being ten performed in first CR. Three-year overall survival (OS) and 3-year event-free survival were 42.8% and 30.8%, respectively. For patients treated with a pediatric regimen, 3-year OS was 52.5%. Extramedullary disease (HR 0.42) and platelet counts (HR 0.9) were independently associated with OS. We still face excessive non-relapse mortality that compromises our results. Alternative strategies implementing FISH and RT-PCR are feasible and able to identify Ph-like fusions. Delays in allogeneic transplantation, as well as the unavailability of new agents, impact long-term survival. Measures to decrease early infection are desirable.
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Affiliation(s)
- Wellington F Silva
- Division of Hematology, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil.,Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Mariane T Amano
- Instituto Sírio-Libanês de Ensino e Pesquisa, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Luiza L Perruso
- Division of Hematology, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil
| | - Maria Gabriella Cordeiro
- Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | - Aline de Medeiros Leal
- Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Luciana Nardinelli
- Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Israel Bendit
- Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Elvira Drp Velloso
- Division of Hematology, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil.,Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil.,Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Eduardo M Rego
- Division of Hematology, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil.,Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Vanderson Rocha
- Division of Hematology, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil.,Division of Hematology, Hospital das Clinicas da Faculdade de Medicina (HCFMUSP), Universidade de Sao Paulo, Sao Paulo, Brazil.,Laboratory of Medical Investigation in Pathogenesis and targeted therapy in Onco-Immuno-Hematology (LIM-31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
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13
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Vettenranta K, Dobsinska V, Kertész G, Svec P, Buechner J, Schultz KR. What Is the Role of HSCT in Philadelphia-Chromosome-Positive and Philadelphia-Chromosome-Like ALL in the Tyrosine Kinase Inhibitor Era? Front Pediatr 2022; 9:807002. [PMID: 35186828 PMCID: PMC8848997 DOI: 10.3389/fped.2021.807002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Previously, the outcome of paediatric Philadelphia-chromosome-positive (Ph+) ALL treated with conventional chemotherapy alone was poor, necessitating the use of haematopoietic stem cell transplantation (HSCT) for the best outcomes. The recent addition of tyrosine kinase inhibitors (TKIs) alongside the chemotherapy regimens for Ph+ ALL has markedly improved outcomes, replacing the need for HSCT for lower risk patients. An additional poor prognosis group of Philadelphia-chromosome-like (Ph-like) ALL has also been identified. This group also can be targeted by TKIs in combination with chemotherapy, but the role of HSCT in this population is not clear. The impact of novel targeted immunotherapies (chimeric antigen receptor T cells and bispecific or drug-conjugated antibodies) has improved the outcome of patients, in combination with chemotherapy, and made the role of HSCT as the optimal curative therapy for Ph+ ALL and Ph-like ALL less clear. The prognosis of patients with Ph+ ALL and persistent minimal residual disease (MRD) at the end of consolidation despite TKI therapy or with additional genetic risk factors remains inferior when HSCT is not used. For such high-risk patients, HSCT using total-body-irradiation-containing conditioning is currently recommended. This review aims to provide an update on the current and future role of HSCT for Ph+ ALL and addresses key questions related to the management of these patients, including the role of HSCT in first complete remission, MRD evaluation and related actions post HSCT, TKI usage post HSCT, and the putative role of HSCT in Ph-like ALL.
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Affiliation(s)
- Kim Vettenranta
- University of Helsinki and Children's Hospital, University of Helsinki, Helsinki, Finland
| | - Veronika Dobsinska
- Department of Pediatric Hematology and Oncology, National Institute of Children's Diseases, Comenius University, Bratislava, Slovakia
| | - Gabriella Kertész
- Department of Pediatric Hematology and Stem Cell Transplantation, Central Hospital of Southern Pest – National Institute of Hematology and Infectious Diseases, Budapest, Hungary
| | - Peter Svec
- Department of Pediatric Hematology and Oncology, National Institute of Children's Diseases, Comenius University, Bratislava, Slovakia
| | - Jochen Buechner
- Department of Pediatric Hematology and Oncology, Oslo University Hospital, Oslo, Norway
| | - Kirk R. Schultz
- Michael Cuccione Childhood Cancer Research Program, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
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14
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Montecchini O, Braidotti S, Franca R, Zudeh G, Boni C, Sorio C, Toffoletti E, Rabusin M, Tommasini A, Decorti G, Stocco G. A Novel ELISA-Based Peptide Biosensor Assay for Screening ABL1 Activity in vitro: A Challenge for Precision Therapy in BCR-ABL1 and BCR-ABL1 Like Leukemias. Front Pharmacol 2021; 12:749361. [PMID: 34867354 PMCID: PMC8640483 DOI: 10.3389/fphar.2021.749361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/08/2021] [Indexed: 11/13/2022] Open
Abstract
The pathogenic role of the overactivated ABL1 tyrosine kinase (TK) pathway is well recognized in some forms of BCR-ABL1 like acute lymphoblastic leukemia (ALL); TK inhibitors represent a useful therapeutic choice in these patients who respond poorly to conventional chemotherapy. Here we report a novel peptide biosensor (PABL)-ELISA assay to investigate ABL1 activity in four immortalized leukemic cell lines with different genetic background. The PABL sequence comprises an ABL1 tyrosine (Y) phosphorylation site and a targeting sequence that increases the specificity for ABL1; additional peptides (Y-site-mutated (PABL-F) and fully-phosphorylated (PPHOSPHO-ABL) biosensors) were included in the assay. After incubation with whole cell lysates, average PABL phosphorylation was significantly increased (basal vs. PABL phosphorylation: 6.84 ± 1.46% vs. 32.44 ± 3.25%, p-value < 0.0001, two-way ANOVA, Bonferroni post-test, percentages relative to PPHOSPHO-ABL in each cell line). Cell lines expressing ABL1-chimeric proteins (K562, ALL-SIL) presented the higher TK activity on PABL; a lower signal was instead observed for NALM6 and REH (p < 0.001 and p < 0.05 vs. K562, respectively). Phosphorylation was ABL1-mediated, as demonstrated by the specific inhibition of imatinib (p < 0.001 for K562, NALM6, ALL-SIL and p < 0.01 for REH) in contrast to ruxolitinib (JAK2-inhibitor), and occurred on the ABL1 Y-site, as demonstrated by PABL-F whose phosphorylation was comparable to basal levels. In order to validate this novel PABL-ELISA assay on leukemic cells isolated from patient’s bone marrow aspirates, preliminary analysis on blasts derived from an adult affected by chronic myeloid leukaemia (BCR-ABL1 positive) and a child affected by ALL (BCR-ABL1 negative) were performed. Phosphorylation of PABL was specifically inhibited after the incubation of BCR-ABL1 positive cell lysates with imatinib, but not with ruxolitinib. While requiring further optimization and validation in leukemic blasts to be of clinical interest, the PABL-based ELISA assay provides a novel in vitro tool for screening both the aberrant ABL1 activity in BCR-ABL1 like ALL leukemic cells and their potential response to TK inhibitors.
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Affiliation(s)
- Oksana Montecchini
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Stefania Braidotti
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Raffaella Franca
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Giulia Zudeh
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Christian Boni
- Department of Medicine, University of Verona, Verona, Italy
| | - Claudio Sorio
- Department of Medicine, University of Verona, Verona, Italy
| | - Eleonora Toffoletti
- Division of Hematology and Bone Marrow Transplantation, Azienda Ospedaliero-Universitaria, Udine, Italy
| | - Marco Rabusin
- Institute for Maternal and Child Health (I.R.C.C.S) Burlo Garofolo, Trieste, Italy
| | - Alberto Tommasini
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.,Institute for Maternal and Child Health (I.R.C.C.S) Burlo Garofolo, Trieste, Italy
| | - Giuliana Decorti
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.,Institute for Maternal and Child Health (I.R.C.C.S) Burlo Garofolo, Trieste, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste, Italy
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15
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Transcriptional and Mutational Profiling of B-Other Acute Lymphoblastic Leukemia for Improved Diagnostics. Cancers (Basel) 2021; 13:cancers13225653. [PMID: 34830809 PMCID: PMC8616234 DOI: 10.3390/cancers13225653] [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: 10/08/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 12/11/2022] Open
Abstract
B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is the most common cancer in children, and significant progress has been made in diagnostics and the treatment of this disease based on the subtypes of BCP-ALL. However, in a large proportion of cases (B-other), recurrent BCP-ALL-associated genomic alterations remain unidentifiable by current diagnostic procedures. In this study, we performed RNA sequencing and analyzed gene fusions, expression profiles, and mutations in diagnostic samples of 185 children with BCP-ALL. Gene expression clustering showed that a subset of B-other samples partially clusters with some of the known subgroups, particularly DUX4-positive. Mutation analysis coupled with gene expression profiling revealed the presence of distinctive BCP-ALL subgroups, characterized by the presence of mutations in known ALL driver genes, e.g., PAX5 and IKZF1. Moreover, we identified novel fusion partners of lymphoid lineage transcriptional factors ETV6, IKZF1 and PAX5. In addition, we report on low blast count detection thresholds and show that the use of EDTA tubes for sample collection does not have adverse effects on sequencing and downstream analysis. Taken together, our findings demonstrate the applicability of whole-transcriptome sequencing for personalized diagnostics in pediatric ALL, including tentative classification of the B-other cases that are difficult to diagnose using conventional methods.
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16
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Mangum DS, Meyer JA, Mason CC, Shams S, Maese LD, Gardiner JD, Downie JM, Pei D, Cheng C, Gleason A, Luo M, Pui CH, Aplenc R, Hunger SP, Loh M, Greaves M, Trede N, Raetz E, Frazer JK, Mullighan CG, Engel ME, Miles RR, Rabin KR, Schiffman JD. Association of Combined Focal 22q11.22 Deletion and IKZF1 Alterations With Outcomes in Childhood Acute Lymphoblastic Leukemia. JAMA Oncol 2021; 7:1521-1528. [PMID: 34410295 DOI: 10.1001/jamaoncol.2021.2723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Alterations in the IKZF1 gene drive B-cell acute lymphoblastic leukemia (B-ALL) but are not routinely used to stratify patients by risk because of inconsistent associations with outcomes. We describe a novel deletion in 22q11.22 that was consistently associated with very poor outcomes in patients with B-ALL with IKZF1 alterations. Objective To determine whether focal deletions within the λ variable chain region in chromosome 22q11.22 were associated with patients with B-ALL with IKZF1 alterations with the highest risk of relapse and/or death. Design, Setting, and Participants This cohort study included 1310 primarily high-risk pediatric patients with B-ALL who were taken from 6 independent clinical cohorts, consisting of 3 multicenter cohorts (AALL0232 [2004-2011], P9906 [2000-2003], and patients with Down syndrome who were pooled from national and international studies) and 3 single-institution cohorts (University of Utah [Salt Lake City], Children's Hospital of Philadelphia [Philadelphia, Pennsylvania], and St. Jude Children's Hospital [Memphis, Tennessee]). Data analysis began in 2011 using patients from the older studies first, and data analysis concluded in 2021. Exposures Focal 22q11.22 deletions. Main Outcomes and Measures Event-free and overall survival was investigated. The hypothesis that 22q11.22 deletions stratified the prognostic effect of IKZF1 alterations was formulated while investigating nearby deletions in VPREB1 in 2 initial cohorts (n = 270). Four additional cohorts were then obtained to further study this association (n = 1040). Results This study of 1310 patients with B-ALL (717 male [56.1%] and 562 female patients [43.9%]) found that focal 22q11.22 deletions are frequent (518 of 1310 [39.5%]) in B-ALL and inconsistent with physiologic V(D)J recombination. A total of 299 of 1310 patients with B-ALL had IKZF1 alterations. Among patients with IKZF1 alterations, more than half shared concomitant focal 22q11.22 deletions (159 of 299 [53.0%]). Patients with combined IKZF1 alterations and 22q11.22 deletions had worse outcomes compared with patients with IKZF1 alterations and wild-type 22q11.22 alleles in every cohort examined (combined cohorts: 5-year event-free survival rates, 43.3% vs 68.5%; hazard ratio [HR], 2.18; 95% CI, 1.54-3.07; P < .001; 5-year overall survival rates, 66.9% vs 83.9%; HR, 2.05; 95% CI, 1.32-3.21; P = .001). While 22q11.22 deletions were not prognostic in patients with wild-type IKZF1 , concomitant 22q11.22 deletions in patients with IKZF1 alterations stratified outcomes across additional risk groups, including patients who met the IKZF1plus criteria, and maintained independent significance in multivariate analysis for event-free survival (HR, 2.05; 95% CI, 1.27-3.29; P = .003) and overall survival (HR, 1.83; 95% CI, 1.01-3.34; P = .05). Conclusions and Relevance This cohort study suggests that 22q11.22 deletions identify patients with B-ALL and IKZF1 alterations who have very poor outcomes and may offer a new genetic biomarker to further refine B-ALL risk stratification and treatment strategies.
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Affiliation(s)
- David Spencer Mangum
- Nemours/Alfred I. DuPont Hospital for Children, Division of Pediatric Hematology/Oncology, Wilmington, Delaware
| | - Julia A Meyer
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, University of Utah, Salt Lake City.,Division of Pediatric Hematology and Oncology, University of California, San Francisco
| | - Clinton C Mason
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, University of Utah, Salt Lake City
| | | | - Luke D Maese
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, University of Utah, Salt Lake City
| | - Jamie D Gardiner
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City
| | | | - Deqing Pei
- Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Cheng Cheng
- Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Adam Gleason
- Department of Pathology & Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Minjie Luo
- Department of Pathology & Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Ching-Hon Pui
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Richard Aplenc
- Division of Oncology and the Center for Childhood Cancer Research, The Children's Hospital of Philadelphia and The Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Stephen P Hunger
- Division of Oncology and the Center for Childhood Cancer Research, The Children's Hospital of Philadelphia and The Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Mignon Loh
- Division of Pediatric Hematology and Oncology, University of California, San Francisco
| | - Mel Greaves
- Institute of Cancer Research, London, England
| | | | - Elizabeth Raetz
- Department of Pediatrics, NYU Langone Health, New York, New York
| | - J Kimble Frazer
- Jimmy Everest Section of Pediatric Hematology-Oncology, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City
| | - Charles G Mullighan
- Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Michael E Engel
- Division of Pediatric Hematology Oncology, Department of Pediatrics, University of Virginia, Charlottesville
| | - Rodney R Miles
- Department of Pathology, University of Utah Health Sciences Center, Salt Lake City
| | - Karen R Rabin
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Joshua D Schiffman
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, University of Utah, Salt Lake City.,Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City.,PEEL Therapeutics, Inc, Salt Lake City, Utah
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17
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Ceppi F, Rizzati F, Colombini A, Conter V, Cazzaniga G. Utilizing the prognostic impact of minimal residual disease in treatment decisions for pediatric acute lymphoblastic leukemia. Expert Rev Hematol 2021; 14:795-807. [PMID: 34374613 DOI: 10.1080/17474086.2021.1967137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Acute lymphoblastic leukemia (ALL) is the first pediatric cancer where the assessment of early response to therapy by minimal residual disease (MRD) monitoring has demonstrated its importance to improve risk-based treatment approaches. The most standardized tools to study MRD in ALL are multiparametric flow cytometry and realtime-quantitative polymerase chain reaction amplification-based methods. In recent years, MRD measurement has reached greater levels of sensitivity and standardization through international laboratory networks collaboration. AREAS COVERED We herewith describe how to assess and apply the prognostic impact of MRD in treatment decisions, with specific focus on pediatric ALL. We also highlight the role of MRD monitoring in the context of genetically homogeneous subgroups of pediatric ALL. However, some queries remain to be addressed and emerging technologies hold the promise of improving MRD detection in ALL patients. EXPERT OPINION Emerging technologies, like next generation flow cytometry, droplet digital PCR, and next generation sequencing appear to be important methods for assessing MRD in pediatric ALL. These more specific and/or sensitive MRD monitoring methods may help to predict relapse with greater accuracy, and are currently being used in clinical trials to improve pediatric ALL outcome by optimizing patient stratification and earlier MRD-based interventional therapy.
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Affiliation(s)
- Francesco Ceppi
- Pediatric Hematology-Oncology Unit, Division of Pediatrics, Woman-Mother-Child Department, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Frida Rizzati
- Pediatric Hematology-Oncology Unit, Division of Pediatrics, Woman-Mother-Child Department, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Antonella Colombini
- Pediatric Hematology-Oncology, University Milano Bicocca, Fondazione MBBM/Ospedale San Gerardo, Monza, Italy
| | - Valentino Conter
- Pediatric Hematology-Oncology, University Milano Bicocca, Fondazione MBBM/Ospedale San Gerardo, Monza, Italy
| | - Giovanni Cazzaniga
- Centro Ricerca Tettamanti, Pediatrics, School of Medicine, University of Milano Bicocca, Fondazione MBBM/Ospedale San Gerardo, Monza, Italy.,Medical Genetics, School of Medicine, University of Milano Bicocca, Monza, Italy
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Abstract
The detection of gene rearrangements in pediatric leukemia is an essential component of the work-up, with implications for accurate diagnosis, proper risk stratification, and therapeutic decisions, including the use of targeted therapies. The traditional methods of karyotype and fluorescence in situ hybridization are still valuable, but many new assays are also available, with different strengths and weaknesses. These assays include next-generation sequencing-based assays that have the potential for highly multiplexed and/or unbiased detection of rearrangements.
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Affiliation(s)
- Marian H Harris
- Department of Pathology, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA.
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Genomic Analyses of Pediatric Acute Lymphoblastic Leukemia Ph+ and Ph-Like-Recent Progress in Treatment. Int J Mol Sci 2021; 22:ijms22126411. [PMID: 34203891 PMCID: PMC8232636 DOI: 10.3390/ijms22126411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/04/2021] [Accepted: 06/14/2021] [Indexed: 12/24/2022] Open
Abstract
Pediatric acute lymphoblastic leukemia (ALL) with t(9;22)(q34;q11.2) is a very rare malignancy in children. Approximately 3-5% of pediatric ALL patients present with the Philadelphia chromosome. Previously, children with Ph+ had a poor prognosis, and were considered for allogeneic stem cell transplantation (allo-HSCT) in their first remission (CR1). Over the last few years, the treatment of childhood ALL has significantly improved due to standardized research protocols. Hematopoietic stem cell transplantation (HSCT) has been the gold standard therapy in ALL Ph+ patients, but recently first-generation tyrosine kinase inhibitor (TKI)-imatinib became a major milestone in increasing overall survival. Genomic analyses give the opportunity for the investigation of new fusions or mutations, which can be used to establish effective targeted therapies. Alterations of the IKZF1 gene are present in a large proportion of pediatric and adult ALL Ph+ cases. IKZF1 deletions are present in ~15% of patients without BCR-ABL1 rearrangements. In BCR-ABL1-negative cases, IKZF1 deletions have been shown to have an independent prognostic impact, carrying a three-fold increased risk of treatment failure. The prognostic significance of IKZF1 gene aberrations in pediatric ALL Ph+ is still under investigation. More research should focus on targeted therapies and immunotherapy, which is not associated with serious toxicity in the same way as classic chemotherapy, and on the improvement of patient outcomes. In this review, we provide a molecular analysis of childhood ALL with t(9;22)(q34;q11.2), including the Ph-like subtype, and of treatment strategies.
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Ribera JM. Philadelphia chromosome-like acute lymphoblastic leukemia. Still a pending matter. Haematologica 2021; 106:1514-1516. [PMID: 34060295 PMCID: PMC8168492 DOI: 10.3324/haematol.2020.270645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 12/21/2022] Open
Affiliation(s)
- Josep-Maria Ribera
- Clinical Hematology Department, ICO-Hospital Germans Trias i Pujol, Josep Carreras Research Institute, Badalona and Universitat Autònoma de Barcelona.
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21
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Neue Strategien zur Behandlung von Kindern und Jugendlichen mit akuter lymphoblastischer Leukämie. Monatsschr Kinderheilkd 2020. [DOI: 10.1007/s00112-020-01082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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