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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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Li Y, Zhang Q, Shao H. Chemotherapy vs. "TKI + immunotherapy" in treatment of B-cell acute lymphoblastic leukemia harboring the RCSD1::ABL2 fusion gene. Ann Hematol 2024; 103:3257-3259. [PMID: 38809455 DOI: 10.1007/s00277-024-05816-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 05/25/2024] [Indexed: 05/30/2024]
Affiliation(s)
- Yan Li
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Qin Zhang
- Department of Hematology, Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Haigang Shao
- Department of Hematology, Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.
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3
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Gupta DG, Varma N, Abdulkadir SA, Sreedharanunni S, Sachdeva MUS, Naseem S, Bose P, Binota J, Malhotra P, Khadwal A, Trehan A, Varma S. A surrogate molecular approach for the detection of Philadelphia chromosome-like B-acute lymphoblastic leukemia. Cancer 2024; 130:713-726. [PMID: 37819686 DOI: 10.1002/cncr.35051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/13/2023] [Accepted: 09/08/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Philadelphia chromosome (Ph)-like B-acute lymphoblastic leukemia (B-ALL) is a clinically significant, high-risk genetic subtype of B-ALL cases. There are few data on the incidence, characterization, and treatment outcomes of Ph-like ALL cases from low- and middle-income countries. There is a pressing need to establish a well-organized/cost-effective approach for identifying Ph-like ALL instances. METHODS Multiplex reverse transcriptase polymerase chain reaction, nCounter NanoString, and fluorescence in situ hybridization were used to detect and characterize Ph-like ALL cases among recurrent genetic abnormalities (RGA)neg B-ALL cases. At the end of induction therapy, flow cytometry-minimal residual disease (MRD) assay was used to quantify MRD positivity in Ph-like ALL cases. RESULTS Of 130 newly diagnosed B-ALL cases, 25% (BCR::ABL1), 4% (ETV6::RUNX1), 5% (TCF3::PBX1), 2% (KM2TA::AFF1), and 65% RGAneg B-ALL cases were revealed by multiplex reverse transcriptase polymerase chain reaction. Among RGAneg B-ALL cases, 24% Ph-like ALL cases using nCounter NanoString were identified, with 48% CRLF2high cases with 45% CRLF2::P2RY8 and 18% CRLF2::IGH rearrangements(∼r) revealed by fluorescence in situ hybridization. In 52% of CRLF2low cases, 17% ABL1 and JAK2∼r 8% EPOR::IGH & PDGRFB∼r were identified. Ph-like ALL cases had higher total leukocyte count (p < .05), male preponderance (p < .05), and high MRD-positivity/induction failure compared with RGAneg B-ALL cases. Furthermore, in Ph-like ALL cases, 11 significant genes using quantitative polymerase chain reaction were identified and validated. CRLF2, IGJ, CEACAM6, MUC4, SPATS2L and NRXN3 genes were overexpressed and show statistical significance (p < .05) in Ph-like ALL cases. CONCLUSIONS This study showed the high incidence of Ph-like ALL cases with kinase activating alterations and treatment outcomes from low- and middle-income region. Furthermore, a surrogate cost-effective multiplex panel of 11 overexpressed genes for the prompt detection of Ph-like ALL cases is proposed. PLAIN LANGUAGE SUMMARY Identification of recurrent gene abnormalities (RGA)neg B-acute lymphoblastic leukemia (B-ALL) cases using multiplex-reverse transcriptase polymerase chain reaction. Identification and characterization of Philadelphia (Ph)-like ALL cases using nCounter NanoString gene expression profiling and fluorescence in situ hybridization. Furthermore, Ph-like ALL cases were characterized according to CRLF2 expression and kinase-activating genomic alterations. Minimal residual disease of Ph-like ALL cases were quantified using flow cytometry-minimal residual disease assay. A surrogate molecular approach was established to detect Ph-like ALL cases from low- and middle-income countries.
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Affiliation(s)
- Dikshat Gopal Gupta
- Department of Urology & 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
| | - Sarki Abba Abdulkadir
- Department of Urology & Pathology, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sreejesh Sreedharanunni
- Department of Hematology, 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
| | - 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 & Medical Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Alka Khadwal
- Department of Clinical Hematology & Medical Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Amita Trehan
- 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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4
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Ganguly S, Sasi A, Pushpam D, Bakhshi S. Philadelphia Chromosome Positive and Philadelphia-Like Acute Lymphoblastic Leukemia in Children and Adolescents: Current Management, Controversies and Emerging Concepts. Indian J Pediatr 2024; 91:37-46. [PMID: 37632689 DOI: 10.1007/s12098-023-04782-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/12/2023] [Indexed: 08/28/2023]
Abstract
Philadelphia chromosome positive (Ph+) acute lymphoblastic lymphoma (ALL) is an uncommon subtype of ALL in children, seen in 2-5% cases. Diagnostic evaluation includes conventional karyotyping and detection of BCR-ABL1 translocation by fluorescence in-situ hybridization (FISH) or reverse transcriptase polymerase chain reaction (RT-PCR). For children, the frontline management includes combination of intensive chemotherapy along with imatinib (300-340 mg/m2/d) or dasatinib (60-80 mg/m2/d). Imatinib/dasatinib should be introduced in induction as soon as results for BCR-ABL are available. Minimal residual disease (MRD) monitoring is essential; multi-parametric flowcytometry and immunoglobulin/T-cell receptor rearrangement PCR are the preferred methods. Intrathecal therapy with at least 12 doses of methotrexate is adequate for central nervous system (CNS) prophylaxis, but cranial radiation is necessary for CNS3 involvement. Allogeneic hematopoietic stem cell transplantation (HSCT) in first remission may be considered in high-risk cases (persistent MRD positivity/induction failure). Maintenance therapy with tyrosine kinase inhibitors (TKI) in children is debatable, with potential concerns for long term adverse effects. At relapse, the choice of TKI is guided by the presence of BCR-ABL tyrosine kinase domain resistance mutations, although the frequency of resistance mutations in children are lower. Allogeneic HSCT is essential for consolidation in second remission, if not done. Ph-like ALL is a newly recognized molecular entity, with gene expression profile similar to Ph+ALL and poor survival outcomes. In resource-constrained settings, a stepwise cost-effective diagnostic evaluation should be considered among high-risk patients without recurrent genetic abnormalities. Current treatment strategies remain similar to Ph-negative ALL. Enrolment in clinical trials is encouraged for such children to evaluate potential targeted agents in this subtype.
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Affiliation(s)
- Shuvadeep Ganguly
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Archana Sasi
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Deepam Pushpam
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sameer Bakhshi
- Department of Medical Oncology, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, 110029, India.
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5
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Wang H, Wang Y, Hao L, Liu X, Zhang J, Yao P, Liu D, Wang R. Treatment for a primary multidrug-resistant B-cell acute lymphoblastic leukemia patient carrying a SSBP2-CSF1R fusion gene: a case report. Front Oncol 2023; 13:1291570. [PMID: 38107066 PMCID: PMC10723836 DOI: 10.3389/fonc.2023.1291570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 11/09/2023] [Indexed: 12/19/2023] Open
Abstract
SSBP2-CSF1R is an important biomarker for clinical diagnosis and prognosis of Philadelphia chromosome-like acute lymphoblastic leukemia (Ph-like ALL). This case report presents a pediatric Ph-like ALL patient carrying the SSBP2-CSF1R fusion gene. The patient was resistant to most conventional chemotherapy regimens and to dasatinib, an inhibitor that has been reported to have a therapeutic effect on SSBP2-CSF1R fusion Ph-like ALL, as she remained minimal residual disease (MRD) positive (detection by flow cytometry) and SSBP2-CSF1R fusion gene (detection by RT-PCR) positive after five rounds of such regimens. We thus conducted a large-scale in vitro screening to assess the sensitivity of the patient's leukemic cells to anti-cancer drugs. Based on the susceptibility results, we chose to combine cytarabine, homoharringtonine, dexamethasone, fludarabine, vindesine, and epirubicin for treatment. Clinical results showed that after a course of treatment, both MRD and SSBP2-CSF1R fusion gene turned negative, and there was no recurrence during an 18-month follow-up. In conclusion, our study suggests that the SSBP2-CSF1R fusion gene may be an important biomarker of primary drug resistance in Ph-like ALL, and indicate that the combination of cytarabine, homoharringtonine, dexamethasone, fludarabine, vindesine, and epirubicin can achieve optimal therapeutic results in this category of patients.
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Affiliation(s)
- Huan Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yujiao Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Liangchun Hao
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xuan Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jihong Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Pin Yao
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Danping Liu
- Precision Targeted Therapy Discovery Center, Institute of Technology Innovation, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, China
| | - Runan Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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6
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Kovach AE, Wood BL. Updates on lymphoblastic leukemia/lymphoma classification and minimal/measurable residual disease analysis. Semin Diagn Pathol 2023; 40:457-471. [PMID: 37953192 DOI: 10.1053/j.semdp.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/18/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
Lymphoblastic leukemia/lymphoma (ALL/LBL), especially certain subtypes, continues to confer morbidity and mortality despite significant therapeutic advances. The pathologic classification of ALL/LBL, especially that of B-ALL, has recently substantially expanded with the identification of several distinct and prognostically important genetic drivers. These discoveries are reflected in both current classification systems, the World Health Organization (WHO) 5th edition and the new International Consensus Classification (ICC). In this article, novel subtypes of B-ALL are reviewed, including DUX4, MEF2D and ZNF384-rearranged B-ALL; the rare pediatric entity B-ALL with TLF3::HLF, now added to the classifications, is discussed; updates to the category of B-ALL with BCR::ABL1-like features (Ph-like B-ALL) are summarized; and emerging genetic subtypes of T-ALL are presented. The second half of the article details current approaches to minimal/measurable residual disease (MRD) detection in B-ALL and T-ALL and presents anticipated challenges to current approaches in the burgeoning era of antigen-directed immunotherapy.
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Affiliation(s)
- Alexandra E Kovach
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA, United States; Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.
| | - Brent L Wood
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA, United States; Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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7
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Alghandour R, Sakr DH, Shaaban Y. Philadelphia-like acute lymphoblastic leukemia: the journey from molecular background to the role of bone marrow transplant-review article. Ann Hematol 2023; 102:1287-1300. [PMID: 37129698 PMCID: PMC10181978 DOI: 10.1007/s00277-023-05241-2] [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: 12/20/2022] [Accepted: 04/20/2023] [Indexed: 05/03/2023]
Abstract
Philadelphia chromosome-like (Ph-like) ALL is a recent subtype of acute lymphoblastic leukemia. Although it does not express the BCR-ABL fusion gene, it has a behavior like true BCR/ABL1-positive cases. This subtype harbors different molecular alterations most commonly CRLF2 rearrangements. Most cases of Ph-like ALL are associated with high white blood cell count, high minimal residual disease level after induction therapy, and high relapse rate. Efforts should be encouraged for early recognition of Ph-like ALL to enhance therapeutic strategies. Recently, many trials are investigating the possibility of adding the tyrosine kinase inhibitor (TKI) to chemotherapy to improve clinical outcomes. The role and best timing of allogeneic bone marrow transplant in those cases are still unclear. Precision medicine should be implemented in the treatment of such cases. Here in this review, we summarize the available data on Ph-like ALL.
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Affiliation(s)
- Reham Alghandour
- Medical oncology Unit, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | - Doaa H Sakr
- Medical oncology Unit, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Yasmin Shaaban
- Clinical Hematology Unit, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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8
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Kim Z, Lee JH. Neurofibromatosis Symptom-Lacking B-Cell Lineage Acute Lymphoblastic Leukemia with Only an NF1 Gene Pathogenic Variant. Diagnostics (Basel) 2023; 13:diagnostics13081486. [PMID: 37189588 DOI: 10.3390/diagnostics13081486] [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: 02/28/2023] [Revised: 04/13/2023] [Accepted: 04/19/2023] [Indexed: 05/17/2023] Open
Abstract
Next-generation sequencing technology has improved molecular genetic analysis, and many molecular genetic studies have been utilized for diagnostic classification, risk stratification, and prognosis prediction of acute lymphoblastic leukemia (ALL). Inactivation of neurofibromin or Nf1, a protein derived from the NF1 gene, causes Ras pathway regulation failure, which is related to leukemogenesis. Pathogenic variants of the NF1 gene in B-cell lineage ALL are uncommon, and in this study, we reported a pathogenic variant that is not registered in any public database. The patient diagnosed with B-cell lineage ALL had no clinical symptoms of neurofibromatosis. Studies on the biology, diagnosis, and treatment of this uncommon disease, as well as other related hematologic neoplasms, such as acute myeloid leukemia and juvenile myelomonocytic leukemia, were reviewed. Biological studies included epidemiological differences among age intervals and pathways for leukemia, such as the Ras pathway. Diagnostic studies included cytogenetic, FISH, and molecular tests for leukemia-related genes and ALL classification, such as Ph-like ALL or BCR-ABL1-like ALL. Treatment studies included pathway inhibitors and chimeric antigen cell receptor T-cells. Resistance mechanisms related to leukemia drugs were also investigated. We believe that these literature reviews will enhance medical care for the uncommon diagnosis of B-cell lineage ALL.
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Affiliation(s)
- Zehwan Kim
- Department of Laboratory Medicine, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
| | - Jong Ho Lee
- Department of Laboratory Medicine, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
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9
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Davis K, Sheikh T, Aggarwal N. Emerging molecular subtypes and therapies in acute lymphoblastic leukemia. Semin Diagn Pathol 2023; 40:202-215. [PMID: 37120350 DOI: 10.1053/j.semdp.2023.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 05/01/2023]
Abstract
Tremendous strides have been made in the molecular and cytogenetic classification of acute lymphoblastic leukemia based on gene expression profiling data, leading to an expansion of entities in the recent International Consensus Classification (ICC) of myeloid neoplasms and acute leukemias and 2022 WHO Classification of Tumours: Haematolymphoid Tumors, 5th edition. This increased diagnostic and therapeutic complexity can be overwhelming, and this review compares nomenclature differences between the ICC and WHO 5th edition publications, compiles key features of each entity, and provides a diagnostic algorithmic approach. In covering B-lymphoblastic leukemia (B-ALL), we divided the entities into established (those present in the revised 4th edition WHO) and novel (those added to either the ICC or WHO 5th edition) groups. The established B-ALL entities include B-ALL with BCR::ABL1 fusion, BCR::ABL1-like features, KMT2A rearrangement, ETV6::RUNX1 rearrangement, high hyperdiploidy, hypodiploidy (focusing on near haploid and low hypodiploid), IGH::IL3 rearrangement, TCF3::PBX1 rearrangement, and iAMP21. The novel B-ALL entities include B-ALL with MYC rearrangement; DUX4 rearrangement; MEF2D rearrangement; ZNF384 or ZNF362 rearrangement, NUTM1 rearrangement; HLF rearrangement; UBTF::ATXN7L3/PAN3,CDX2; mutated IKZF1 N159Y; mutated PAX5 P80R; ETV6::RUNX1-like features; PAX5 alteration; mutated ZEB2 (p.H1038R)/IGH::CEBPE; ZNF384 rearranged-like; KMT2A-rearranged-like; and CRLF2 rearrangement (non-Ph-like). Classification of T-ALL is complex with some variability in how the subtypes are defined in recent literature. It was classified as early T-precursor lymphoblastic leukemia/lymphoma and T-ALL, NOS in the WHO revised 4th edition and WHO 5th edition. The ICC added an entity into early T-cell precursor ALL, BCL11B-activated, and also added provisional entities subclassified based on transcription factor families that are aberrantly activated.
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Affiliation(s)
- Katelynn Davis
- Department of Hematopathology, School of Medicine and UPMC, University of Pittsburgh, USA
| | | | - Nidhi Aggarwal
- Department of Hematopathology, School of Medicine and UPMC, University of Pittsburgh, USA.
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10
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Dasatinib for chronic myelomonocytic leukemia with ZMIZ1-ABL1 fusion gene: a case report. Int J Hematol 2023; 117:929-932. [PMID: 36694063 DOI: 10.1007/s12185-023-03531-z] [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: 11/07/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/25/2023]
Abstract
The fusion gene ZMIZ1-ABL1 is rare, with only one known case reported in lymphatic system malignancies, and none reported in a myeloid tumor. Here, we report the case of a patient with chronic myelomonocytic leukemia with the ZMIZ1-ABL1 fusion gene. Elevated leukocytes and splenomegaly were the main manifestations. Remission was achieved with the second-generation tyrosine kinase inhibitor (TKI) dasatinib, and the response has been sustained for 10 months. The treatment results in this case suggest that dasatinib is effective in treating ZMIZ1-ABL1 fusion gene-positive disease.
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11
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Zhang L, Habeebu SSM, Li W. Prognostic and Predictive Biomarkers in Precursor B-cell Acute Lymphoblastic Leukemia. Leukemia 2022. [DOI: 10.36255/exon-publications-leukemia-biomarkers-lymphoblastic-leukemia] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Barmettler S, Sharapova SO, Milota T, Greif PA, Magg T, Hauck F. Genomics Driving Diagnosis and Treatment of Inborn Errors of Immunity With Cancer Predisposition. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:1725-1736.e2. [PMID: 35364342 DOI: 10.1016/j.jaip.2022.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 12/14/2022]
Abstract
Inborn errors of immunity (IEI) are genetically and clinically heterogeneous disorders that, in addition to infection susceptibility and immune dysregulation, can have an enhanced cancer predisposition. The increasing availability of upfront next-generation sequencing diagnostics in immunology and oncology have uncovered substantial overlap of germline and somatic genetic conditions that can result in immunodeficiency and cancer. However, broad application of unbiased genetics in these neighboring disciplines still needs to be deployed, and joined therapeutic strategies guided by germline and somatic genetic risk factors are lacking. We illustrate the current difficulties encountered in clinical practice, summarize the historical development of pathophysiological concepts of cancer predisposition, and review select genetic, molecular, and cellular mechanisms of well-defined and illustrative disease entities such as DNA repair defects, combined immunodeficiencies with Epstein-Barr virus susceptibility, autoimmune lymphoproliferative syndromes, regulatory T-cell disorders, and defects in cell intrinsic immunity. We review genetic variants that, when present in the germline, cause IEI with cancer predisposition but, when arising as somatic variants, behave as oncogenes and cause specific cancer entities. We finally give examples of small molecular compounds that are developed and studied to target genetically defined cancers but might also proof useful to treat IEI.
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Affiliation(s)
- Sara Barmettler
- Allergy and Clinical Immunology Unit, Division of Rheumatology, Allergy, & Immunology, Massachusetts General Hospital, Boston, Mass
| | - Svetlana O Sharapova
- Research Department, Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Minsk, Belarus
| | - Tomas Milota
- Department of Immunology, Second Faculty of Medicine, Charles University Hospital and Motol University Hospital, Prague, Czechia
| | - Philipp A Greif
- Department of Medicine III, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, 81377 Munich, Germany; German Cancer Research Center (DKFZ), 69121 Heidelberg, Germany
| | - Thomas Magg
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Fabian Hauck
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
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13
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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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14
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Lejman M, Chałupnik A, Chilimoniuk Z, Dobosz M. Genetic Biomarkers and Their Clinical Implications in B-Cell Acute Lymphoblastic Leukemia in Children. Int J Mol Sci 2022; 23:2755. [PMID: 35269896 PMCID: PMC8911213 DOI: 10.3390/ijms23052755] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 02/04/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) is a heterogeneous group of hematologic malignancies characterized by abnormal proliferation of immature lymphoid cells. It is the most commonly diagnosed childhood cancer with an almost 80% cure rate. Despite favorable survival rates in the pediatric population, a significant number of patients develop resistance to therapy, resulting in poor prognosis. ALL is a heterogeneous disease at the genetic level, but the intensive development of sequencing in the last decade has made it possible to broaden the study of genomic changes. New technologies allow us to detect molecular changes such as point mutations or to characterize epigenetic or proteomic profiles. This process made it possible to identify new subtypes of this disease characterized by constellations of genetic alterations, including chromosome changes, sequence mutations, and DNA copy number alterations. These genetic abnormalities are used as diagnostic, prognostic and predictive biomarkers that play an important role in earlier disease detection, more accurate risk stratification, and treatment. Identification of new ALL biomarkers, and thus a greater understanding of their molecular basis, will lead to better monitoring of the course of the disease. In this article, we provide an overview of the latest information on genomic alterations found in childhood ALL and discuss their impact on patients' clinical outcomes.
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Affiliation(s)
- Monika Lejman
- Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
| | - Aleksandra Chałupnik
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
| | - Zuzanna Chilimoniuk
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
| | - Maciej Dobosz
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
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15
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Hrabovsky S, Vrzalova Z, Stika J, Jelinkova H, Jarosova M, Navrkalova V, Martenek J, Folber F, Salek C, Horacek JM, Pospisilova S, Mayer J, Doubek M. Genomic landscape of B-other acute lymphoblastic leukemia in an adult retrospective cohort with a focus on BCR-ABL1-like subtype. Acta Oncol 2021; 60:760-770. [PMID: 33750258 DOI: 10.1080/0284186x.2021.1900908] [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: 12/13/2022]
Abstract
INTRODUCTION BCR-ABL1-like acute lymphoblastic leukemia (ALL) is a high-risk disease with a complex genomic background. Though extensively studied, data on the frequency and mutual associations of present mutations are still incomplete in adult patients. This retrospective study aims to map the genomic landscape of B-other ALL in a cohort of adult patients with a focus on the BCR-ABL1-like ALL subtype. METHODS We analyzed bone marrow and peripheral blood samples of adult B-other ALL patients treated consecutively at three major Czech teaching hospitals. Samples were analyzed by cytogenetic methods, gene expression profiling, multiplex ligation-dependent probe amplification (MLPA), and next-generation sequencing (NGS). RESULTS Fifty-eight B-other ALL patients (not BCR-ABL1, KMT2A-rearranged, ETV6-RUNX1, TCF3-PBX1, or iAMP21) were included in the study. Median follow-up was 23.8 months. Samples from 33 patients were available for a gene expression analysis, 48.9% identified as BCR-ABL1-like ALL. Of the BCR-ABL1-like ALL cases, 18.8% harbored IGH-CRLF2 and 12.5% P2RY8-CRLF2 fusion gene. We observed a higher MRD failure rate in BCR-ABL1-like than in non-BCR-ABL1-like ALL patients after the induction treatment (50.0 vs. 13.3%, p=.05). There was a trend to worse progression-free and overall survival in the BCR-ABL1-like group, though not statistically significant. Deletions in IKZF1 gene were found in 31.3% of BCR-ABL1-like cases. Patients with concurrent IKZF1 and CDKN2A/B, PAX5 or PAR1 region deletions (IKZF1plus profile) had significantly worse progression-free survival than those with sole IKZF1 deletion or IKZF1 wild-type (p=.02). NGS analysis was performed in 54 patients and identified 99 short variants in TP53, JAK2, NRAS, PAX5, CREBBP, NF1, FLT3, ATM, KRAS, RUNX1, and other genes. Seventy-five of these gene variants have not yet been described in B-cell precursor ALL to date. CONCLUSION This study widens existing knowledge of the BCR-ABL1-like and B-other ALL genomic landscape in the adult population, supports previous findings, and identifies a number of novel gene variants.
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Affiliation(s)
- Stepan Hrabovsky
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
| | - Zuzana Vrzalova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Jiri Stika
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Hana Jelinkova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
| | - Marie Jarosova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Veronika Navrkalova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Jiri Martenek
- Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Frantisek Folber
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
| | - Cyril Salek
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
- Institute of Hematology and Blood Transfusion, Prague, Czechia
- Institute of Clinical and Experimental Hematology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Jan M. Horacek
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
- Fourth Department of Internal Medicine – Hematology, University Hospital Hradec Kralove, Hradec Kralove, Czechia
- Department of Military Internal Medicine and Hygiene, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czechia
| | - Sarka Pospisilova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Jiri Mayer
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
| | - Michael Doubek
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czechia
- Faculty of Medicine, Masaryk University, Brno, Czechia
- Czech Leukemia Study Group – for Life (CELL), Brno, Czechia
- Central European Institute of Technology (CEITEC), Brno, Czechia
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