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Xiong ZY, Shen YJ, Zhang SZ, Zhu HH. A review of immunotargeted therapy for Philadelphia chromosome positive acute lymphoblastic leukaemia: making progress in chemotherapy-free regimens. Hematology 2024; 29:2335856. [PMID: 38581291 DOI: 10.1080/16078454.2024.2335856] [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: 08/21/2023] [Accepted: 03/23/2024] [Indexed: 04/08/2024] Open
Abstract
Philadelphia chromosome-positive acute lymphoblastic leukemia (PH + ALL) is the most common cytogenetic abnormality of B-ALL in adults and is associated with poor prognosis. Previously, the only curative treatment option in PH + ALL was allogeneic hematopoietic stem cell transplantation (Allo-HSCT). Since 2000, targeted therapy combined with chemotherapy, represented by the tyrosine kinase inhibitor Imatinib, has become the first-line treatment for PH + ALL. Currently, the remission rate and survival rate of Imatinib are superior to those of simple chemotherapy, and it can also improve the efficacy of transplantation. More recently, some innovative immune-targeted therapy greatly improved the prognosis of PH + ALL, such as Blinatumomab and Inotuzumab Ozogamicin. For patients with ABL1 mutations and those who have relapsed or are refractory to other treatments, targeted oral small molecule drugs, monoclonal antibodies, Bispecific T cell Engagers (BiTE), and chimeric antigen receptor (CAR) T cells immunotherapy are emerging as potential treatment options. These new therapeutic interventions are changing the treatment landscape for PH + ALL. In summary, this review discusses the current advancements in targeted therapeutic agents shift in the treatment strategy of PH + ALL towards using more tolerable chemotherapy-free induction and consolidation regimens confers better disease outcomes and might obviate the need for HSCT.
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Affiliation(s)
- Zhen-Yu Xiong
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, People's Republic of China
- College of Basic Medical Sciences, China Three Gorges University, Yichang, People's Republic of China
| | - Yao-Jia Shen
- Department of Hematology, Children's Hospital of Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Shi-Zhong Zhang
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, People's Republic of China
- College of Basic Medical Sciences, China Three Gorges University, Yichang, People's Republic of China
| | - Hong-Hu Zhu
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, People's Republic of China
- College of Basic Medical Sciences, China Three Gorges University, Yichang, People's Republic of China
- Department of Hematology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China
- Chinese Institutes for Medical Research, Beijing, People's Republic of China
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2
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Abou Dalle I, Moukalled N, El Cheikh J, Mohty M, Bazarbachi A. Philadelphia-chromosome positive acute lymphoblastic leukemia: ten frequently asked questions. Leukemia 2024:10.1038/s41375-024-02319-2. [PMID: 38902471 DOI: 10.1038/s41375-024-02319-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 06/22/2024]
Abstract
Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) constitutes a distinctive cytogenetic entity associated with challenging outcomes, particularly in adult patients. Current upfront chemotherapy-tyrosine kinase inhibitor (TKI)-based therapies include first, second and third-generation TKIs that have revolutionized patient outcomes including molecular remission and overall survival. Chemotherapy-free regimens such as blinatumomab-dasatinib or blinatumomab-ponatinib offer exciting possibilities, yet challenges arise, particularly in preventing central nervous system relapse. Monitoring measurable residual disease is now a cornerstone particularly using next-generation sequencing (NGS)-Clonoseq for accurate assessment. Controversy regarding the ability to omit consolidation with allogeneic stem cell transplantation, specifically for patients achieving early molecular remission, is related to the excellent survival achieved with novel combinations in the upfront setting, however challenged by the lower disease control when transplant is utilized beyond first remission. Post-transplant maintenance introduces new dilemmas: the optimal TKI, dosing, and duration of therapy are open questions. Meanwhile, a myriad of new combinations and cellular therapies are used for relapsed Ph+ ALL, prompting us to unravel the optimal sequencing of these promising regimen. In this review, we delve into the breakthroughs and controversies in Ph+ ALL with ten commonly asked questions.
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Affiliation(s)
- Iman Abou Dalle
- Hematology-Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nour Moukalled
- Hematology-Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Jean El Cheikh
- Hematology-Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Mohamad Mohty
- Sorbonne University, Department of Clinical Hematology and Cellular Therapy, Saint-Antoine Hospital, AP-HP, INSERM UMRs 938, Paris, France
| | - Ali Bazarbachi
- Hematology-Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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3
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Candoni A, Chiusolo P, Lazzarotto D, Sartor C, Dargenio M, Chiaretti S, Skert C, Giglio F, Trappolini S, Fracchiolla NS, Medici S, Bresciani P, Cuoghi A, Papayannidis C. Ponatinib as a Prophylactic or Pre-Emptive Strategy to Prevent Cytological Relapse after Allogeneic Stem Cell Transplantation in Patients with Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia Transplanted in Complete Cytological Remission. Cancers (Basel) 2024; 16:2108. [PMID: 38893226 PMCID: PMC11171293 DOI: 10.3390/cancers16112108] [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: 04/01/2024] [Revised: 05/24/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The administration of TKIs after Allo-SCT in Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph + ALL) remains controversial, and the TKI approach (prophylactic, pre-emptive or salvage) is still heterogeneous in transplant centers. In this context, very little is known about the feasibility and safety of third-generation TKIs. In this paper, we analyze the efficacy and safety of ponatinib (PONA) administered after Allo-SCT to prevent cytologic relapse of Ph + ALL. This is a multicenter observational study including 48 patients (pts) with Ph + ALL (median age 49 years) who received PONA after Allo-SCT while in complete cytological remission (cCR); 26 (54%) had positive minimal residual disease (MRD pos) before Allo-SCT. PONA was administered after Allo-SCT prophylactically (starting with MRD neg) in 26 pts or pre-emptively (starting with MRD pos post-SCT and without hematological relapse) in 22 pts. Patients treated prophylactically with PONA started treatment earlier, at a median of 4.3 months (range 1.5-6) after Allo-SCT, than those treated pre-emptively, who started PONA at a median of 7.4 months (range 2-63) after Allo-SCT (p = 0.01). The median starting dose of PONA was 30 mg/day (range 15-45). A dose reduction was required in 10/48 (21%) of cases, but a permanent discontinuation of PONA, due to toxicity, was required in only 5/48 pts (10.5%). No deaths due to PONA-related adverse events (AEs) were reported. The median follow-up time after Allo-SCT was 34 months (range 7.7-118). At the last follow-up, the median duration of PONA therapy was 22 months (range 2-100). The 5-year OS and RFS after Allo-SCT were 92% and 71%, respectively. The 5-year RFS after Allo-SCT of pts who received PONA prophylaxis was 95%, and it was 57% for those who received PONA pre-emptively (log-rank p = 0.02). In conclusion, this multicenter analysis of 48 patients with Ph + ALL undergoing Allo-SCT while in CcR, although with the caution of the retrospective data, supports the feasibility of PONA maintenance strategy after Allo-SCT with a low rate of discontinuations (10.5%) due to PONA-related AE.
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Affiliation(s)
- Anna Candoni
- Section of Haematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41123 Modena, Italy
- Division of Hematology and Stem Cell Transplantation, ASUFC, 33100 Udine, Italy
| | - Patrizia Chiusolo
- Hematology and Stem Cell Transplantation Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00136 Rome, Italy
| | - Davide Lazzarotto
- Division of Hematology and Stem Cell Transplantation, ASUFC, 33100 Udine, Italy
| | - Chiara Sartor
- IRCCS Azienda Ospedaliero—Universitaria di Bologna, Istituto di Ematologia Seragnoli, 40126 Bologna, Italy
| | - Michelina Dargenio
- Unità Operativa di Ematologia e Trapianto, Ospedale Vito Fazzi, 73100 Lecce, Italy
| | - Sabina Chiaretti
- Department of Translational and Precision Medicine, Sapienza University, 00161 Rome, Italy
| | - Cristina Skert
- Hematology Unit, Ospedale Dell’Angelo, Mestre, 30174 Venice, Italy
| | - Fabio Giglio
- Hematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Silvia Trappolini
- Hematology Department, University of Ancona, Azienda Ospedaliera Universitaria Ospedali Riuniti di Ancona, 60126 Ancona, Italy
| | | | - Sara Medici
- Section of Haematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41123 Modena, Italy
| | - Paola Bresciani
- Section of Haematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41123 Modena, Italy
| | - Angela Cuoghi
- Section of Haematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41123 Modena, Italy
| | - Cristina Papayannidis
- IRCCS Azienda Ospedaliero—Universitaria di Bologna, Istituto di Ematologia Seragnoli, 40126 Bologna, Italy
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Duminuco A, Markovic U, Parrinello NL, Lo Nigro L, Mauro E, Vetro C, Parisi M, Maugeri C, Fiumara PF, Milone G, Romano A, Di Raimondo F, Leotta S. Potential clinical impact of T-cell lymphocyte kinetics monitoring in patients with B cell precursors acute lymphoblastic leukemia treated with blinatumomab: a single-center experience. Front Immunol 2023; 14:1195734. [PMID: 37809082 PMCID: PMC10556455 DOI: 10.3389/fimmu.2023.1195734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 09/11/2023] [Indexed: 10/10/2023] Open
Abstract
Blinatumomab is a bispecific anti-CD3 and anti-CD19 antibody that acts as a T-cell engager: by binding CD19+ lymphoblasts, blinatumomab recruits cytotoxic CD3+ T-lymphocytes to target the cancer cells. Here we describe seven different patients affected by B-cell precursor acute lymphoblastic leukemia (Bcp-ALL) and treated with blinatumomab, on which we evaluated the potential association between the amount of different T-cells subsets and deep molecular response after the first cycle, identified as a complete remission in the absence of minimal residual disease (CR/MRD). The immune-system effector cells studied were CD3+, CD4+ effector memory (T4-EM), CD8+ effector memory (T8-EM), and T-regulatory (T-reg) lymphocytes, and myeloid-derived suppressor cells (MDSC). Measurements were performed in the peripheral blood using flow cytometry of the peripheral blood at baseline and after the first cycle of blinatumomab. The first results show that patients with a higher proportion of baseline T-lymphocytes achieved MRD negativity more frequently with no statistically significant difference (p=0.06) and without differences in the subpopulation count following the first treatment. These extremely preliminary data could potentially pave the way for future studies, including larger and less heterogeneous cohorts, in order to assess the T-cell kinetics in a specific set of patients with potential synergy effects in targeting myeloid-derived suppressor cells (MDSC), commonly known to have an immune evasion mechanism in Bcp-ALL.
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Affiliation(s)
- Andrea Duminuco
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
- Postgraduate School of Hematology, University of Catania, Catania, Italy
| | - Uros Markovic
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
- Division of Hematology with Bone Marrow Transplant, Istituto Oncologico del Mediterraneo, Viagrande, Italy
| | - Nunziatina Laura Parrinello
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Luca Lo Nigro
- Center of Pediatric Hematology Oncology, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Elisa Mauro
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Calogero Vetro
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Marina Parisi
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Cinzia Maugeri
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Paolo Fabio Fiumara
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Giuseppe Milone
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Alessandra Romano
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
- Dipartimento di Specialità Medico-Chirurgiche, CHIRMED, Sezione di Ematologia, University of Catania, Catania, Italy
| | - Francesco Di Raimondo
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
- Dipartimento di Specialità Medico-Chirurgiche, CHIRMED, Sezione di Ematologia, University of Catania, Catania, Italy
| | - Salvatore Leotta
- Division of Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliero Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
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5
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Hodroj MH, Abou Dalle I, Moukalled N, El Cheikh J, Mohty M, Bazarbachi A. Novel strategies to prevent and overcome relapse after allogeneic hematopoietic cell transplantation in acute lymphoblastic leukemia. Front Immunol 2023; 14:1191912. [PMID: 37359547 PMCID: PMC10285443 DOI: 10.3389/fimmu.2023.1191912] [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: 03/22/2023] [Accepted: 05/26/2023] [Indexed: 06/28/2023] Open
Abstract
The outcome of B-cell acute lymphoblastic leukemia (B-ALL) has improved over time with the incorporation of multi-agent chemotherapy in the treatment landscape as well as the recent approval of immunotherapeutic agents allowing a larger proportion of patients to undergo allogeneic hematopoietic cell transplantation (allo-HCT) which is still considered a potential curative approach. However, relapse post-transplant is still occurring and constitutes a common cause of treatment failure in B-ALL. The present review aims to discuss the novel strategies and therapies used to prevent and overcome relapse post allo-HCT in patients with ALL, focusing on the role of tyrosine kinase inhibitors in Philadelphia chromosome positive B-ALL, the role of innovative agents such as blinatumomab and inotuzumab ozogamicin, and finally the role of cellular therapy.
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Affiliation(s)
- Mohammad Hassan Hodroj
- Division of Hematology & Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Iman Abou Dalle
- Division of Hematology & Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
- Bone Marrow Transplantation Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nour Moukalled
- Division of Hematology & Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
- Bone Marrow Transplantation Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Jean El Cheikh
- Division of Hematology & Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
- Bone Marrow Transplantation Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Mohamad Mohty
- Sorbonne University, Saint-Antoine Hospital, AP-HP, INSERM UMRs 938, Paris, France
| | - Ali Bazarbachi
- Division of Hematology & Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
- Bone Marrow Transplantation Program, American University of Beirut Medical Center, Beirut, Lebanon
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6
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Giammarco S, Bellesi S, Metafuni E, Rossi M, Minnella G, Bacigalupo A, Sica S, Chiusolo P. Cord blood resilience in a patient with relapsing Ph + B lymphoblastic acute leukemia after hematopoietic stem cell transplantation. Ann Hematol 2022; 101:2565-2566. [PMID: 35994061 DOI: 10.1007/s00277-022-04962-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/17/2022] [Indexed: 11/01/2022]
Affiliation(s)
- S Giammarco
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - S Bellesi
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - E Metafuni
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - M Rossi
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - G Minnella
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - A Bacigalupo
- Sezione Di Ematologia, Dipartimento Di Scienze Radiologiche Ed Ematologiche, Università Cattolica del Sacro Cuore, Rome, Italy
| | - S Sica
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy. .,Sezione Di Ematologia, Dipartimento Di Scienze Radiologiche Ed Ematologiche, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - P Chiusolo
- Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy.,Sezione Di Ematologia, Dipartimento Di Scienze Radiologiche Ed Ematologiche, Università Cattolica del Sacro Cuore, Rome, Italy
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Impact of Different Cell Counting Methods in Molecular Monitoring of Chronic Myeloid Leukemia Patients. Diagnostics (Basel) 2022; 12:diagnostics12051051. [PMID: 35626209 PMCID: PMC9140187 DOI: 10.3390/diagnostics12051051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/14/2022] [Accepted: 04/21/2022] [Indexed: 01/06/2023] Open
Abstract
Background: Detection of BCR-ABL1 transcript level via real-time quantitative-polymerase-chain reaction (Q-PCR) is a clinical routine for disease monitoring, assessing Tyrosine Kinase Inhibitor therapy efficacy and predicting long-term response in chronic myeloid leukemia (CML) patients. For valid Q-PCR results, each stage of the laboratory procedures need be optimized, including the cell-counting method that represents a critical step in obtaining g an appropriate amount of RNA and reliable Q-PCR results. Traditionally, manual or automated methods are used for the detection and enumeration of white blood cells (WBCs). Here, we compared the performance of the manual counting measurement to the flow cytometry (FC)-based automatic counting assay employing CytoFLEX platform. Methods: We tested five different types of measurements: one manual hemocytometer-based count and four FC-based automatic cell-counting methods, including absolute, based on beads, based on 7-amino actinomycin D, combining and associating beads and 7AAD. The recovery efficiency for each counting method was established considering the quality and quantity of total RNA isolated and the Q-PCR results in matched samples from 90 adults with CML. Results: Our analyses showed no consistent bias between the different types of measurements, with comparable number of WBCs counted for each type of measurement. Similarly, we observed a 100% concordance in the amount of RNA extracted and in the Q-PCR cycle threshold values for both BCR-ABL1 and ABL1 gene transcripts in matched counted specimens from all the investigated groups. Overall, we show that FC-based automatic absolute cell counting has comparable performance to manual measurements and allows accurate cell counts without the use of expensive beads or the addition of the time-consuming intercalator 7AAD. Conclusions: This automatic method can replace the more laborious manual workflow, especially when high-throughput isolations from blood of CML patients are needed.
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Saleh K, Fernandez A, Pasquier F. Treatment of Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia in Adults. Cancers (Basel) 2022; 14:cancers14071805. [PMID: 35406576 PMCID: PMC8997772 DOI: 10.3390/cancers14071805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 12/23/2022] Open
Abstract
Simple Summary Outcome of patients with Philadelphia-chromosome positive acute lymphoblastic leukemia (Ph+ ALL) dramatically improved during the past 20 years with the advent of tyrosine kinase inhibitors and monoclonal antibodies. Their great efficacy in young and fit patients led to question our reliance on chemotherapy and allogeneic hematopoietic stem cell transplantation. Moreover, these well-tolerated treatments can be safely administrated even in the elderly that represent the majority of Ph+ ALL patient. This review will focus on the recent changes of paradigm in the management of Ph+ ALL patients and the development of novel therapeutic strategies. Abstract Philadelphia-chromosome positive acute lymphoblastic leukemia (Ph+ ALL) is the most common subtype of B-ALL in adults and its incidence increases with age. It is characterized by the presence of BCR-ABL oncoprotein that plays a central role in the leukemogenesis of Ph+ ALL. Ph+ ALL patients traditionally had dismal prognosis and long-term survivors were only observed among patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT) in first complete remission (CR1). However, feasibility of allo-HSCT is limited in this elderly population. Fortunately, development of increasingly powerful tyrosine kinase inhibitors (TKIs) from the beginning of the 2000′s dramatically improved the prognosis of Ph+ ALL patients with complete response rates above 90%, deep molecular responses and prolonged survival, altogether with good tolerance. TKIs became the keystone of Ph+ ALL management and their great efficacy led to develop reduced-intensity chemotherapy backbones. Subsequent introduction of blinatumomab allowed going further with development of chemo free strategies. This review will focus on these amazing recent advances as well as novel therapeutic strategies in adult Ph+ ALL.
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Affiliation(s)
- Khalil Saleh
- Department of Hematology, Gustave Roussy, 94805 Villejuif, France; (K.S.); (A.F.)
| | - Alexis Fernandez
- Department of Hematology, Gustave Roussy, 94805 Villejuif, France; (K.S.); (A.F.)
| | - Florence Pasquier
- Department of Hematology, Gustave Roussy, 94805 Villejuif, France; (K.S.); (A.F.)
- INSERM, UMR 1287, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
- Correspondence:
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