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Laganà A, Scalzulli E, Bisegna ML, Carmosino I, Ielo C, Costa A, Torrieri L, Totaro M, Martelli M, Breccia M. Treatment free remission (TFR) after second-generation tyrosine kinase inhibitors (2G-TKIs) treatment in chronic myeloid leukemia (CML): from feasibility to safety. Expert Opin Drug Saf 2024:1-11. [PMID: 38873693 DOI: 10.1080/14740338.2024.2368822] [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: 03/27/2024] [Accepted: 06/12/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION Chronic myeloid leukemia (CML) prevalence is currently increasing due to the great efficacy of tyrosine kinase inhibitor (TKI) therapy. Discontinuation of treatment in the long-term, owing to avoid off-target side effects or treatment-free remission (TFR), has become an additional treatment goal in CML patients who achieved a deep molecular response (DMR). Second-generation TKIs (2 G-TKIs) have a significantly higher rate of DMR than imatinib. Hence, especially in young patients with a strategy of TFR, 2 G-TKIs are becoming the most frequently used TKIs and may increase TFR attempts in the future. AREAS COVERED In this review, the main findings extrapolated from clinical trials and real-life evidence regarding 2 G-TKIs discontinuation were discussed, through broad research on Medline, Embase, and archives from EHA and ASH congresses. EXPERT OPINION Overall, TFR rate after 2 G-TKIs is ranging from 40% to 60% for selected patients with sustained DMR and it can be considered a safe procedure, that have become, nowadays, a daily practice. However, many crucial aspects regarding treatment choices, timings, as well as predictive factors, patient communication, and optimal strategies need to be better clarified to improve successful TFR rate.
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Affiliation(s)
- Alessandro Laganà
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Emilia Scalzulli
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Maria Laura Bisegna
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Ida Carmosino
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Claudia Ielo
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Alessandro Costa
- Hematology Unit, Department of Medical Sciences and Public Health, Businco Hospital, University of Cagliari, Cagliari, Italy
| | - Lorenzo Torrieri
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Matteo Totaro
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Maurizio Martelli
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Massimo Breccia
- Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
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Claudiani S, Chughtai F, Khan A, Hayden C, Fernando F, Khorashad J, Orovboni V, Scandura G, Innes A, Apperley JF, Milojkovic D. Long-term outcomes after upfront second-generation tyrosine kinase inhibitors for chronic myeloid leukemia: managing intolerance and resistance. Leukemia 2024; 38:796-802. [PMID: 38424138 PMCID: PMC10997507 DOI: 10.1038/s41375-024-02187-w] [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: 09/29/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024]
Abstract
Second-generation tyrosine kinase inhibitors (2GTKI) are more effective in inducing rapid molecular responses than imatinib when used first-line in patients with chronic myeloid leukemia in chronic phase (CML-CP). However, failure of first line-2GTKI (1L-2GTKI) still occurs and there is no consensus regarding subsequent management. We retrospectively analyzed the outcome of 106 CML-CP patients treated with 1L-2GTKI and with a median follow-up of 91 months. 45 patients (42.4%) switched to an alternative TKI, 28 for intolerance (26.4%) and 17 (16%) for resistance. Most patients who remained on 1L-2GTKI achieved deep molecular responses (DMR) and 15 (14.1%) are in treatment-free remission (TFR). Intolerant patients also obtained DMR, although most required multiple TKI changes and were slower to respond, particularly if treated with 2L-imatinib. Inferior outcomes were observed in resistant patients, who failed alternative 2L-2GTKI and required 3/4GTKI and/or allogeneic hematopoietic stem cell transplant (alloSCT). 7yr-OS was significantly lower for these individuals (66.1%) than for intolerant patients and those who remained on 1L-2GTKI (100% and 97.9%, respectively; p = 0.001). It is apparent that failure of 1L-2GTKI is a challenging problem in modern CML therapy. Intolerance can be effectively managed by switching to an alternative 2GTKI, but resistance requires early consideration of 3/4GTKI.
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Affiliation(s)
- Simone Claudiani
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK.
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK.
| | - Farhan Chughtai
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
| | - Afzal Khan
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
| | - Chloe Hayden
- Imperial Molecular Pathology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Fiona Fernando
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Jamshid Khorashad
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
| | - Victoria Orovboni
- Imperial Molecular Pathology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Glenda Scandura
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
| | - Andrew Innes
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Jane F Apperley
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Dragana Milojkovic
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, UK
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
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Flygt H, Söderlund S, Richter J, Saussele S, Koskenvesa P, Stenke L, Mustjoki S, Dimitrijevic A, Stentoft J, Majeed W, Roy L, Wolf D, Dreimane A, Gjertsen BT, Gedde-Dahl T, Ahlstrand E, Markevärn B, Hjorth-Hansen H, Janssen J, Olsson-Strömberg U. Treatment-free remission after a second TKI discontinuation attempt in patients with Chronic Myeloid Leukemia re-treated with dasatinib - interim results from the DAstop2 trial. Leukemia 2024; 38:781-787. [PMID: 38278960 PMCID: PMC10997502 DOI: 10.1038/s41375-024-02145-6] [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: 11/01/2023] [Revised: 12/25/2023] [Accepted: 01/08/2024] [Indexed: 01/28/2024]
Abstract
Tyrosine kinase inhibitor (TKI) discontinuation in chronic myeloid leukemia (CML) has become part of routine care for patients with a sustained deep molecular response (DMR). Approximately 50% experience a molecular relapse upon TKI cessation. Most of them quickly regain DMR upon TKI resumption. Whether these patients can achieve a second treatment-free remission (TFR) remains unclear. DAstop2 (ClinicalTrials.gov ID: NCT03573596) is a prospective study including patients with a failed first TFR attempt re-treated with any TKI for ≥ one year. Upon entering the study, patients received the TKI dasatinib for additional two years. Patients with sustained DMR for ≥1 year qualified for a second TKI stop. Ninety-four patients were included between Oct 2017-Dec 2021. At the time of data analysis, 62 patients had attempted a 2nd stop. After a median follow-up of 27 months from 2nd stop, TFR rates were 61, 56 and 46% at 6, 12 and 24 months respectively. No progression to advanced stage disease was seen and 87% had re-achieved MR4 within a median of 3 months from TKI re-initiation. In summary, we show that a 2nd TFR attempt after dasatinib treatment is safe, feasible and TFR rates seem in the range of those reported in trials of a first TKI stop.
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Affiliation(s)
- Hjalmar Flygt
- Department of Medical Science and Division of Hematology, Uppsala University Hospital, Uppsala, Sweden.
| | - Stina Söderlund
- Department of Medical Science and Division of Hematology, Uppsala University Hospital, Uppsala, Sweden
| | - Johan Richter
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Susanne Saussele
- Medical Clinic, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Perttu Koskenvesa
- Department of Hematology, Hematology Research Unit Helsinki and Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
| | - Leif Stenke
- Department of Hematology, Karolinska University Hospital and Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Satu Mustjoki
- Department of Hematology, Hematology Research Unit Helsinki and Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
- Translational Immunology Research Program and Department of Clinical Chemistry and Hematology, University of Helsinki, Helsinki, Finland
- ICAN Digital Precision Cancer Medicine Flagship, Helsinki, Finland
| | | | - Jesper Stentoft
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Waleed Majeed
- Department of Hemato-Oncology, Stavanger University Hospital, Stavanger, Norway
| | - Lydia Roy
- French CML group Fi-LMC, Centre Léon Bérard, Lyon, Hôpital Universitaire Henri Mondor, AP-HP, Service d'hématologie Clinique & Faculté de Santé, Université Paris Est Créteil, Créteil, France
| | - Dominik Wolf
- Department of Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Tyrolean Cancer Research Institute (TKFI), Medical University Innsbruck, Innsbruck, Austria
- Medical Clinic 3, Universitätsklinikum, Bonn, Germany
| | - Arta Dreimane
- Department of Hematology, Linköping University Hospital, Linköping, Sweden
| | - Bjørn Tore Gjertsen
- Department of Internal Medicine, Hematology Section, Haukeland University Hospital, Bergen, Norway
| | - Tobias Gedde-Dahl
- Department of Hematology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Erik Ahlstrand
- Department of Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Berit Markevärn
- Department of Hematology, Umeå University Hospital, Umeå, Sweden
| | | | - Jeroen Janssen
- Department of Hematology, Radboud University medical center, Nijmegen, The Netherlands
| | - Ulla Olsson-Strömberg
- Department of Medical Science and Division of Hematology, Uppsala University Hospital, Uppsala, Sweden
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