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Breccia M, Saglio G. Interferon in chronic myeloid leukaemia: Is it useful for treatment-free remission? Br J Haematol 2023; 202:1087-1088. [PMID: 37537862 DOI: 10.1111/bjh.19013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 08/05/2023]
Abstract
The role of IFNα in chronic myeloid leukaemia patients who have achieved a deep molecular response (DMR) is still unknown. The study reported by Irani et al., which shows the prospective biological effects of the drug in combination with a second-generation tyrosine kinase inhibitor, pave the way for further clinical studies aimed at increasing the rate of DMR for a possible successful discontinuation. Commentary on: Irani et al. Immune modulation in chronic myeloid leukaemia patients treated with nilotinib and interferon-alpha. Br J Haematol 2023;202:1127-1136.
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Affiliation(s)
- Massimo Breccia
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Giuseppe Saglio
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
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2
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Roy L, Chomel JC, Guilhot J, Guerci-Bresler A, Escoffre-Barbe M, Giraudier S, Charbonnier A, Dubruille V, Huguet F, Johnson-Ansah H, Lenain P, Ame S, Etienne G, Nicolini FE, Rea D, Cony-Makhoul P, Courby S, Ianotto JC, Legros L, Machet A, Coiteux V, Hermet E, Cayssials E, Bouchet S, Mahon FX, Rousselot P, Guilhot F. Dasatinib plus Peg-Interferon alpha 2b combination in newly diagnosed chronic phase chronic myeloid leukaemia: Results of a multicenter phase 2 study (DASA-PegIFN study). Br J Haematol 2023; 200:175-186. [PMID: 36214090 DOI: 10.1111/bjh.18486] [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: 05/13/2022] [Revised: 09/04/2022] [Accepted: 09/16/2022] [Indexed: 01/14/2023]
Abstract
Superior rates of deep molecular response (DMR) have been reported with the combination of tyrosine kinase inhibitors and pegylated-interferon-alpha (Peg-IFN) in patients with newly diagnosed chronic phase-chronic myeloid leukaemia (CP-CML). In this setting, this study investigated the efficacy and safety of dasatinib combined to Peg-IFN-α2b (Dasa-PegIFN, NCT01872442). A total of 79 patients (age ≤65 years) started dasatinib; 61 were eligible for Peg-IFNα-2b add-on therapy at month 3 for a maximum 21-months duration. Dasatinib was continued thereafter. The primary endpoint was the cumulative rate of molecular response 4.5 log (MR4.5 ) by 12 months. The results are reported for the 5-year duration of the study. Grade 3 neutropenia was frequent with the combination but did not induce severe infection (one of grade 3). Other adverse events were generally low grade (4% of grade 3-4) and expected. Seventy-nine per cent and 61% of patients continued the Peg-IFN until months 12 and 24, respectively. Overall, at these time points, MR4.5 rates were 25% and 38%, respectively. Thereafter, 32% and 46% of patients achieved a sustained (≥2 years) MR4.5 or MR4 , respectively. This work established the feasibility and high rates of achievement of early and sustained DMR (a prerequisite for treatment-free-remission) with dasatinib and Peg-IFNα-2b combination as initial therapy.
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Affiliation(s)
- Lydia Roy
- Hôpital Universitaire Henri Mondor, APHP, Faculté de Santé, UPEC, Service d'Hématologie Clinique, Créteil, France
| | | | | | | | | | - Stéphane Giraudier
- Hôpital Saint-Louis, APHP et INSERM Université de Paris, Service de biologie cellulaire, Paris, France
| | - Aude Charbonnier
- Institut Paoli-Calmettes, Service d'Hématologie Clinique, Marseille, France
| | | | - Françoise Huguet
- Service d'Hématologie Clinique, CHU Toulouse, I.U.C.T.O, Toulouse, France
| | | | - Pascal Lenain
- Centre Henri Becquerel, Service d'Hématologie Clinique, Rouen, France
| | - Shanti Ame
- CHU Strasbourg, Service d'Hématologie Clinique, Strasbourg, France
| | - Gabriel Etienne
- Institut Bergonié, Service d'Hématologie Clinique, Bordeaux, France
| | - Franck E Nicolini
- Centre Léon Bérard, Service d'Hématologie Clinique & INSERM U1052 CRC, Lyon, France
| | - Delphine Rea
- Hôpital St Louis, APHP, Service d'Hématologie Clinique, Paris, France
| | | | - Stéphane Courby
- CHU Grenoble Service d'Hématologie Clinique, Grenoble, France
| | | | - Laurence Legros
- Hôpital Paul Brousse, AP-HP, Service d'Hématologie Clinique, INSERM UMRS-MD1197, Villejuif, France
| | - Antoine Machet
- Hôpital Bretonneau, CHRU Tours Service d'Hématologie Clinique, Tours, France
| | - Valérie Coiteux
- Hôpital Claude Huriez, CHRU Lille Service d'Hématologie Clinique, Lille, France
| | - Eric Hermet
- CHU d'Estaing, Clermont-Ferrand, Service d'Hématologie Clinique, Clermont-Ferrand, France
| | - Emilie Cayssials
- INSERM CIC 1402, CHU Poitiers, Poitiers, France.,CHU de Poitiers, Service d'Hématologie Clinique, Poitiers, France
| | - Stéphane Bouchet
- Hôpital Pellegrin, CHU Bordeaux, Laboratoire de pharmacologie, Bordeaux, France
| | | | - Philippe Rousselot
- Centre Hospitalier de Versailles, Université Paris Saclay UMR 1184, Service d'Hématologie Clinique, Le Chesnay, France
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- French CML group (Fi-LMC), Centre Léon Bérard, Lyon, France
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Niederwieser C, Kröger N. Transplantation in CML in the TKI era: who, when, and how? HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2022; 2022:114-122. [PMID: 36485123 PMCID: PMC9820642 DOI: 10.1182/hematology.2022000329] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Molecular therapy with tyrosine kinase inhibitors (TKIs) has significantly reduced the indication for allogeneic hematopoietic stem cell transplantation (allo-HSCT) in chronic myeloid leukemia (CML). Treatment-free remission can be obtained in about 50% of patients with an optimal response. However, cure rates up to 90% are restricted to patients receiving HSCT. Timing is essential since HSCT in the early stages of the disease has the best outcome. Patients in a more advanced phase (AdP) than chronic-phase (chP) CML undergo HSCT with suboptimal outcomes, and the gap between chP and AdP disease is widening. First-line therapy should start with first- or second-generation (G) TKIs. Patients failing treatment (BCR-ABL1 transcripts of greater than 10% at 3 and 6 months and greater than 1% at 12 months) should be switched to second-line TKIs, and HSCT should be considered. Patients not responding to 2G-TKI therapy as well as patients in an accelerated phase (AP) or blast crisis (BC) are candidates for HSCT. Therapy resistant BCR-ABL1 mutations, high-risk additional cytogenetic abnormalities, and molecular signs of leukemia progression should trigger the indication for HSCT. Patients who, despite dose adjustments, do not tolerate or develop severe adverse events, including vascular events, to multiple TKIs are also candidates for HSCT. In AdP CML, TKIs do not show long-lasting results, and the outcome of HSCT is less optimal without pretransplant therapy. In these patients the induction of chP2 with TKIs, either alone (AP) or in combination with intensive chemotherapy (BC), followed by HSCT should be pursued.
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Affiliation(s)
- Christian Niederwieser
- Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Germany
| | - Nicolaus Kröger
- Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Germany
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Robin JB, Theron A, Quittet P, Exbrayat C, Gaillard JB, Lavabre-Bertrand T, David S, Saad A, Jourdan E, Cartron G. Discontinuation of tyrosine kinase inhibitor in chronic myeloid leukemia: a retrospective cohort in east occitania. Ann Hematol 2022; 101:1015-1022. [DOI: 10.1007/s00277-022-04779-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 01/30/2022] [Indexed: 11/28/2022]
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5
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Flygt H, Söderlund S, Stentoft J, Richter J, Koskenvesa P, Mustjoki S, Majeed W, Lübking A, Dreimane A, Markevärn B, Stenke L, Myhr Eriksson K, Gjertsen BT, Gedde-Dahl T, Dimitrijevic A, Udby L, Olsson-Strömberg U, Hjorth-Hansen H. Long-term tolerability and efficacy after initial PegIFN-α addition to dasatinib in CML-CP: Five-year follow-up of the NordCML007 study. Eur J Haematol 2021; 107:617-623. [PMID: 34418168 DOI: 10.1111/ejh.13699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Treatment-free remission (TFR) has emerged as a treatment goal in chronic myeloid leukemia in the chronic phase (CML-CP). Attempts to increase proportion of patients achieving TFR include combination of tyrosine kinase inhibitors (TKI) and other drugs. Interferon-α in addition to TKI has shown promising efficacy but with dose-dependent toxicity and discontinuations. NordCML007 was initiated to study the efficacy and safety of low dose pegylated IFN-α (PegIFN-α) in combination with dasatinib (DAS) in CML-CP. METHODS Forty patients with newly diagnosed CML-CP were given DAS upfront. After month 3 (M3) 15 μg/wk of PegIFN-α was added and increased to 25 μg/wk from M7 until M15. DAS treatment was continued and adverse events and BCR-ABL1 qRT-PCR values were reported yearly after M24. Results from M1 to M18 have previously been published, and here we present long-term data. RESULTS After 5 years of follow-up, there were no suspected unexpected serious adverse reactions, no increase in serosal effusions, no disease progressions and no CML-related deaths. Rates of MR3.0 (MMR), MR4.0 and MR4.5 were 84.6%, 64.1% and 51.3% respectively at M60, and 95% of patients reached MMR at some point during the study. CONCLUSION Initial addition of PegIFN-α to DAS shows good long-term efficacy without increased toxicity.
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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
| | - Jesper Stentoft
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Johan Richter
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Perttu Koskenvesa
- Hematology Research Unit Helsinki, and Department of Hematology, Helsinki University Hospital Comprehensive Cancer Center, University of Helsinki, Helsinki, Finland
| | - Satu Mustjoki
- Hematology Research Unit Helsinki, and Department of Hematology, Helsinki University Hospital Comprehensive Cancer Center, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program and Department of Clinical Chemistry and Hematology, University of Helsinki, Helsinki, Finland
| | - Waleed Majeed
- Department of Hemato-Oncology, Stavanger University Hospital, Stavanger, Norway
| | - Anna Lübking
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Arta Dreimane
- Department of Hematology, Linköping University Hospital, Linköping, Sweden
| | - Berit Markevärn
- Department of Hematology, Umeå University Hospital, Umeå, Sweden
| | - Leif Stenke
- Department of Medicine Solna, Karolinska Institutet and Division of Hematology, Karolinska University Hospital, Stockholm, 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
| | | | - Lene Udby
- Department of Hematology, Zealand University Hospital, Roskilde, Denmark
| | - Ulla Olsson-Strömberg
- Department of Medical Science and Division of Hematology, Uppsala University Hospital, Uppsala, Sweden
| | - Henrik Hjorth-Hansen
- Department of Hematology, St Olavs Hospital Trondheim, Trondheim, Norway.,Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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Guilhot F, Rigal-Huguet F, Guilhot J, Guerci-Bresler AP, Maloisel F, Rea D, Coiteux V, Gardembas M, Berthou C, Vekhoff A, Jourdan E, Berger M, Fouillard L, Alexis M, Legros L, Rousselot P, Delmer A, Lenain P, Escoffre Barbe M, Gyan E, Bulabois CE, Dubruille V, Joly B, Pollet B, Cony-Makhoul P, Johnson-Ansah H, Mercier M, Caillot D, Charbonnier A, Kiladjian JJ, Chapiro J, Penot A, Dorvaux V, Vaida I, Santagostino A, Roy L, Zerazhi H, Deconinck E, Maisonneuve H, Plantier I, Lebon D, Arkam Y, Cambier N, Ghomari K, Miclea JM, Glaisner S, Cayuela JM, Chomel JC, Muller M, Lhermitte L, Delord M, Preudhomme C, Etienne G, Mahon FX, Nicolini FE. Long-term outcome of imatinib 400 mg compared to imatinib 600 mg or imatinib 400 mg daily in combination with cytarabine or pegylated interferon alpha 2a for chronic myeloid leukaemia: results from the French SPIRIT phase III randomised trial. Leukemia 2021; 35:2332-2345. [PMID: 33483613 DOI: 10.1038/s41375-020-01117-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 11/20/2020] [Accepted: 12/15/2020] [Indexed: 01/29/2023]
Abstract
The STI571 prospective randomised trial (SPIRIT) French trial is a four-arm study comparing imatinib (IM) 400 mg versus IM 600 mg, IM 400 mg + cytarabine (AraC), and IM 400 mg + pegylated interferon alpha2a (PegIFN-α2a) for the front-line treatment of chronic-phase chronic myeloid leukaemia (CML). Long-term analyses included overall and progression-free survival, molecular responses to treatment, and severe adverse events. Starting in 2003, the trial included 787 evaluable patients. The median overall follow-up of the patients was 13.5 years (range 3 months to 16.7 years). Based on intention-to-treat analyses, at 15 years, overall and progression-free survival were similar across arms: 85%, 83%, 80%, and 82% and 84%, 87%, 79%, and 79% for the IM 400 mg (N = 223), IM 600 mg (N = 171), IM 400 mg + AraC (N = 172), and IM 400 mg + PegIFN-α2a (N = 221) arms, respectively. The rate of major molecular response at 12 months and deep molecular response (MR4) over time were significantly higher with the combination IM 400 mg + PegIFN-α2a than with IM 400 mg: p = 0.0001 and p = 0.0035, respectively. Progression to advanced phases and secondary malignancies were the most frequent causes of death. Toxicity was the main reason for stopping AraC or PegIFN-α2a treatment.
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Affiliation(s)
| | | | | | | | | | - Delphine Rea
- Department of Hematology, Hopital Saint-Louis, APHP, Paris, France
| | - Valérie Coiteux
- Clinical Hematology Department, Hospital Claude Huriez, CHRU, Lille, France
| | | | | | - Anne Vekhoff
- Clinical Hematology Department, Hospital St Antoine, APHP. Sorbonne Université, Paris, France
| | - Eric Jourdan
- Hématologie Clinique, Institut de Cancérologie du Gard, CHU de Nîmes, Nîmes, France
| | - Marc Berger
- Hematologie Biologique, CHU Estaing, Clermont Ferrand, France
| | | | - Magda Alexis
- Hématologie et Thérapie Cellulaire, Grand Hôpital de l'EST Francilien, Meaux, France
| | - Laurence Legros
- Department of Haematology, Hopital Paul Brousse, AP-HP, INSERM UMRS-MD1197, Villejuif, France
| | - Philippe Rousselot
- Hematology Department, Division of Innovative Therapies, Centre Hospitalier de Versailles, Versailles and Université Paris-Saclay, Inserm, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Alain Delmer
- Clinical Hematology Department, CHU, Reims, France
| | - Pascal Lenain
- Clinical Hematology Department, Centre Henri Becquerel, Rouen, France
| | | | - Emmanuel Gyan
- Hematology and Cell Therapy Department, University of Tours, Tours, France
| | | | | | - Bertrand Joly
- Hématologie Clinique, CH Sud Francilien, Corbeil-Essonnes, France
| | - Bertrand Pollet
- Hématologie Clinique, CH Boulogne sur mer, Boulogne sur mer, France
| | | | | | - Melanie Mercier
- Service d'Dématologie Médecine Interne Maladies Infectieuses, Centre Hospitalier Bretagne Atlantique Vannes, Vannes, France
| | - Denis Caillot
- Hématologie Clinique, CHU Dijon Bourgogne, Dijon, France
| | - Aude Charbonnier
- Clinical Hematology Department, Institut Paoli Calmettes, Marseille, France
| | | | - Jacques Chapiro
- Service Hématologie Clinique, Hopitaux Civiles de Colmar, Colmar, France
| | - Amélie Penot
- Service Hématologie et Thérapie Cellulaire, CHU Limoges, Limoges, France
| | | | - Iona Vaida
- Hématologie Clinique, Centre Hospitalier René-Dubois, Cergy-Pontoise, France
| | | | - Lydia Roy
- Clinical Hematology Department, Hop Henri Mondor, APHP, UPEC, Créteil, France
| | - Hacene Zerazhi
- Service Oncologie Médicale et Hématologie Clinique, Centre Hospitalier Henri Duffaut, Avignon, France
| | | | | | | | - Delphine Lebon
- Service d'Hématologie Clinique CHU Amiens-Picardie, Amiens-Picardie, France
| | - Yazid Arkam
- Service d'Hématologie GHR Mulhouse, Mulhouse, France
| | | | - Kamel Ghomari
- Service d'Hématologie-Oncologie CH Beauvais, Beauvais, France
| | | | | | | | | | - Marc Muller
- Laboratoire de Génétique, CHRU Nancy, Nancy, France
| | - Ludovic Lhermitte
- Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Marc Delord
- Clinical Research Department, Hôpital André Mignot, Versailles, France
| | | | - Gabriel Etienne
- Clinical Hematology Department, Institut Bergonié, Bordeaux, France
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Kong J, Qin YZ, Zhao XS, Hou Y, Liu KY, Huang XJ, Jiang H. Profiles of NK cell subsets are associated with successful tyrosine kinase inhibitor discontinuation in chronic myeloid leukemia and changes following interferon treatment. Ann Hematol 2021; 100:2557-2566. [PMID: 34278524 DOI: 10.1007/s00277-021-04606-9] [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] [Received: 03/23/2021] [Accepted: 07/07/2021] [Indexed: 11/24/2022]
Abstract
Recent studies have shown that approximately 50% of patients with chronic myeloid leukemia (CML) receiving tyrosine kinase inhibitor (TKI) therapy with a sustained deep molecular response (DMR) (BCR-ABL1IS ≤ 0.01%) can achieve treatment-free remission (TFR, stopping TKI without relapse) and that prior interferon (IFN)-α therapy and higher NK cell counts at and after TKI discontinuation are associated with TFR. We recently reported that post-TKI discontinuation of IFN-α therapy could prevent molecular relapse (MR, BCR-ABL1IS > 0.1%). Here, we evaluated whether NK cells are associated with MR and investigated the effects of post-TKI discontinuation IFN-α therapy on lymphocyte subsets. A total of 34 patients measuring blood lymphocyte subclasses were included. In the 22 patients who did not receive IFN-α therapy, at 1 month after TKI discontinuation, the nonrelapsed patients showed a significantly higher proportion and count of NK cells than the relapsed patients. In particular, the proportion and count of CD56dim NK cells were significantly higher in the nonrelapsed patients than in the relapsed patients. In the 12 patients who received IFN-α therapy, the level of CD56bright NK cells increased significantly after 3 and 6 months of IFN-α therapy. In summary, NK cells, in particular CD56dim NK cells, were associated with MR after TKI discontinuation in patients with CML. Additionally, IFN-α therapy gradually increased the level of CD56bright NK cells in patients with CML.
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Affiliation(s)
- Jun Kong
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Ya-Zhen Qin
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Xiao-Su Zhao
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Yue Hou
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Kai-Yan Liu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Xiao-Jun Huang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
| | - Hao Jiang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Centre for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China.
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8
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Jun K, Ya-Zhen Q, Xiao-Su Z, Hong-Xia S, Yue-Yun L, Kai-Yan L, Xiao-Jun H, Hao J. Interferon-α may help prevent molecular relapse of chronic myeloid leukemia after the discontinuation of tyrosine kinase inhibitors. Ther Adv Hematol 2021; 12:2040620720986643. [PMID: 33613929 PMCID: PMC7841675 DOI: 10.1177/2040620720986643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/12/2020] [Indexed: 11/16/2022] Open
Abstract
Background Currently, the goal of chronic myeloid leukemia (CML) treatment is normal survival and good quality of life without life-long treatment, namely, "treatment-free remission" (TFR). At present, approximately only 50% of patients with CML with a deep molecular response are able to discontinue tyrosine kinase inhibitor (TKI) without experiencing molecular relapse [MR; loss of major molecular response (MMR)]. In addition, prior interferon (IFN) treatment is associated with a higher rate of TFR. Methods We aimed to evaluate the feasibility of TKI discontinuation in Chinese patients with CML and determine whether IFN could prevent MR when used after TKI discontinuation in patients with 0.0032% <BCR-ABL IS ⩽0.1%. Therefore, we retrospectively analyzed the data of patients with CML who discontinued TKI treatment at our center. Results Forty-nine patients who discontinued TKI therapy after achieving MR 4.5 were included in this study, and the median follow-up time from TKI discontinuation was 27 (7, 75) months. Nineteen patients eventually lost MMR, and the TFR rate of the 49 patients was 67% (95% confidence interval 53.6%, 80.3%) at 12 months. The duration of MR 4.5 ⩾54 months and duration of imatinib ⩾85 months were significantly associated with a higher TFR rate. Of the 22 patients with 0.0032% <BCR-ABL IS ⩽0.1%, 12 received IFN-α treatment. The median IFN-α therapy duration was nine (2, 18) months, and three patients eventually lost MMR. Three patients discontinued IFN-α after 2, 2.5, and 10 months, and maintained MMR for 9, 8, and 11 months after IFN discontinuation, respectively. Of the 10 patients not receiving IFN-α treatment, eight eventually lost MMR. The MR-free survival rate was significantly different between the patients treated with and those treated without IFN-α over 24 months (70.7% versus 15.0%, p = 0.002). Conclusion These results indicate that after TKI discontinuation, IFN-α can be administered to patients with 0.0032% <BCR-ABL IS ⩽0.1%, which may help prevent MR.
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Affiliation(s)
- Kong Jun
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Qin Ya-Zhen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Zhao Xiao-Su
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Shi Hong-Xia
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Lai Yue-Yun
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Liu Kai-Yan
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Huang Xiao-Jun
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Jiang Hao
- Peking University People's Hospital, Institute of Hematology, National Clinical Research Center for Hematologic Disease, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People's Republic of China
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9
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Type I Interferons and Cancer: An Evolving Story Demanding Novel Clinical Applications. Cancers (Basel) 2019; 11:cancers11121943. [PMID: 31817234 PMCID: PMC6966569 DOI: 10.3390/cancers11121943] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/20/2019] [Accepted: 11/30/2019] [Indexed: 01/05/2023] Open
Abstract
The first report on the antitumor effects of interferon α/β (IFN-I) in mice was published 50 years ago. IFN-α were the first immunotherapeutic drugs approved by the FDA for clinical use in cancer. However, their clinical use occurred at a time when most of their mechanisms of action were still unknown. These cytokines were being used as either conventional cytostatic drugs or non-specific biological response modifiers. Specific biological activities subsequently ascribed to IFN-I were poorly considered for their clinical use. Notably, a lot of the data in humans and mice underlines the importance of endogenous IFN-I, produced by both immune and tumor cells, in the control of tumor growth and in the response to antitumor therapies. While many oncologists consider IFN-I as “dead drugs”, recent studies reveal new mechanisms of action with potential implications in cancer control and immunotherapy response or resistance, suggesting novel rationales for their usage in target and personalized anti-cancer treatments. In this Perspectives Article, we focus on the following aspects: (1) the added value of IFN-I for enhancing the antitumor impact of standard anticancer treatments (chemotherapy and radiotherapy) and new therapeutic approaches, such as check point inhibitors and epigenetic drugs; (2) the role of IFN-I in the control of cancer stem cells growth and its possible implications for the development of novel antitumor therapies; and (3) the role of IFN-I in the development of cancer vaccines and the intriguing therapeutic possibilities offered by in situ delivery of ex vivo IFN-stimulated dendritic cells.
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10
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Clark RE. Tyrosine Kinase Inhibitor Therapy Discontinuation for Patients with Chronic Myeloid Leukaemia in Clinical Practice. Curr Hematol Malig Rep 2019; 14:507-514. [PMID: 31701369 PMCID: PMC6934633 DOI: 10.1007/s11899-019-00548-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE In chronic myeloid leukaemia, tyrosine kinase inhibitor treatment is traditionally given continuously for life. However, these drugs produce excellent responses for many patients, and this is accompanied by survival that is close to normal. This has prompted studies of whether it is possible to stop treatment, thus achieving a treatment-free remission (TFR). RECENT FINDINGS Most TFR studies have focussed on abrupt cessation in patients with long-standing deep remissions, but recent data suggest that more gradual treatment de-escalation may improve TFR success, and that it may be possible to extend TFR attempts to patients who are in stable major molecular response but not necessarily MR4. Further data are badly needed on TFR for patients whose remission is less than stable MR4 and on the importance of prior interferon-alpha treatment. Funding TFR trials in a disease with such an excellent outlook is an increasing challenge.
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MESH Headings
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/adverse effects
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor
- Clinical Decision-Making
- Disease Management
- Drug Resistance, Neoplasm
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Fusion Proteins, bcr-abl/genetics
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/etiology
- Molecular Targeted Therapy
- Practice Patterns, Physicians'
- Protein Kinase Inhibitors/administration & dosage
- Protein Kinase Inhibitors/adverse effects
- Protein Kinase Inhibitors/therapeutic use
- Recurrence
- Remission Induction
- Treatment Outcome
- Withholding Treatment
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Affiliation(s)
- Richard E Clark
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Room 150, First floor, Sherrington Building, Ashton Street, Liverpool,, L69 3GE, UK.
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11
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Moisoiu V, Teodorescu P, Parajdi L, Pasca S, Zdrenghea M, Dima D, Precup R, Tomuleasa C, Soverini S. Assessing Measurable Residual Disease in Chronic Myeloid Leukemia. BCR-ABL1 IS in the Avant-Garde of Molecular Hematology. Front Oncol 2019; 9:863. [PMID: 31608223 PMCID: PMC6768007 DOI: 10.3389/fonc.2019.00863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/20/2019] [Indexed: 11/17/2022] Open
Abstract
Chronic myelogenous leukemia (CML) is a malignancy of the myeloid cell lineage characterized by a recurrent chromosomal abnormality: the Philadelphia chromosome, which results from the reciprocal translocation of the chromosomes 9 and 22. The Philadelphia chromosome contains a fusion gene called BCR-ABL1. The BCR-ABL1 codes for an aberrantly functioning tyrosine kinase that drives the malignant proliferation of the founding clone. The advent of tyrosine kinase inhibitors (TKI) represents a landmark in the treatment of CML, that has led to tremendous improvement in the remission and survival rates. Since the introduction of imatinib, the first TKI, several other TKI have been approved that further broadened the arsenal against CML. Patients treated with TKIs require sensitive monitoring of BCR-ABL1 transcripts with quantitative real-time polymerase chain reaction (qRT-PCT), which has become an essential part of managing patients with CML. In this review, we discuss the importance of the BCR-ABL1 assay, and we highlight the growing importance of BCR-ABL1 dynamics. We also introduce a mathematical correction for the BCR-ABL1 assay that could help homogenizing the use of the ABL1 as a control gene. Finally, we discuss the growing body of evidence concerning treatment-free remission. Along with the continuous improvement in the therapeutic arsenal against CML, the molecular monitoring of CML represents the avant-garde in the struggle to make CML a curable disease.
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Affiliation(s)
- Vlad Moisoiu
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Patric Teodorescu
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
- Department of Hematology, Ion Chiricuta Clinical Research Center, Cluj Napoca, Romania
| | - Lorand Parajdi
- Department of Mathematics, Babes Bolyai University, Cluj Napoca, Romania
| | - Sergiu Pasca
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Mihnea Zdrenghea
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Delia Dima
- Department of Hematology, Ion Chiricuta Clinical Research Center, Cluj Napoca, Romania
| | - Radu Precup
- Department of Mathematics, Babes Bolyai University, Cluj Napoca, Romania
| | - Ciprian Tomuleasa
- Department of Hematology, Ion Chiricuta Clinical Research Center, Cluj Napoca, Romania
- Department of Hematology, Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Simona Soverini
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology L. and A. Seràgnoli, S. Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
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12
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Bloch J, Spertini O, Stucki A, Solly F, Blum S. Over 20 years of treatment-free remission after interferon-alpha monotherapy for chronic myeloid leukemia. Leuk Res 2018; 73:103-104. [DOI: 10.1016/j.leukres.2018.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 11/16/2022]
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13
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Rousselot P. The story of tyrosine kinase inhibitors discontinuation in clinical practice. Leuk Lymphoma 2018; 59:2782-2791. [PMID: 29909726 DOI: 10.1080/10428194.2018.1459611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Chronic myeloid leukemia is the first example of successful clinical use of tyrosine kinase inhibitors (TKIs). Blockade of oncogenic BCR-ABL1 tyrosine kinase activity by imatinib translated into an impressive demonstration of clinical and biological control of the disease. Historically, the primary objective of TKIs use was to achieve long-term survival. Today this is a reality for the majority of patients. The rapid development of BCR-ABL1 quantification by RT-qPCR has facilitated the monitoring of residual disease. Molecular response has emerged as a new therapeutic objective, opening the door to TKIs discontinuation. The first prospective stop study in patients in deep molecular response was initiated in 2004, with today nearly 15 years of follow-up. The pioneering observations of this study followed by numerous stop-studies have led to a new therapeutic goal of treatment-free remission. Five cases of patients who discontinued TKIs are reviewed, illustrating the current issues and challenges surrounding this approach.
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Affiliation(s)
- Philippe Rousselot
- a Department of Hematology and Oncology , Université Versailles Saint-Quentin-en-Yvelines, Université Paris Saclay, INSERM U1173, Centre Hospitalier de Versailles , Le Chesnay , France
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14
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Abstract
PURPOSE OF REVIEW A large number of chronic myeloid leukemia (CML) patients receiving tyrosine kinase inhibitors (TKIs) can now enjoy a deep molecular control of the disease and the life span could be approaching that of normal population. The purpose of the review is to evaluate current evidence and if we can talk of a cure. RECENT FINDINGS The revolution in the treatment of CML was apparent since the exquisite efficacy of imatinib mesylate, a tyrosine kinase inhibitor, was proven and received approval for newly diagnosed cases in 2001. Subsequent development of second-generation TKIs, nilotinib and dasatinib, has increased our armamentarium. These TKIs, because of their safety and efficacy, are now offered as first-line therapy, thus relegating use of allogeneic transplant to the second line or beyond. It has also been possible to stop TKIs in selected subsets in whom leukemia burden became undetectable and ~ 40% of them remain drug-free for a number of years-treatment-free remission (TFR). Nevertheless, much work needs to be done to eradicate leukemia stem cells as current TKIs appear unable to eradicate leukemia stem cells (LSC). Effective treatment of more advanced phase CML remains elusive. Further efforts to develop newer molecules targeting BCR-ABL and beyond must be continued. Although TKIs have revolutionized treatment of chronic phase CML, longer follow-up is necessary to realize their curative potential. Equally important is to explore newer targets and development of more potent small molecules for eradication of leukemia clone in all patients.
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15
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Khoury HJ, Williams LA, Atallah E, Hehlmann R. Chronic Myeloid Leukemia: What Every Practitioner Needs to Know in 2017. Am Soc Clin Oncol Educ Book 2017; 37:468-479. [PMID: 28561719 DOI: 10.1200/edbk_175712] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The prognosis of chronic phase chronic myeloid leukemia (CML) has improved so that life expectancy for patients responding to tyrosine kinase inhibitors (TKIs) is now equivalent to age-matched controls. Attention should be paid to comorbidities that impact survival. The success of TKI therapy can be easily and reliably assessed at well-accepted time points using quantitative polymerase chain reaction (PCR) standardized to the international scale. Patient-reported outcome (PRO) tools are readily available for use in the clinic and provide complementary information on the tolerance of TKIs. Effectively managing adverse events of TKIs can improve compliance and quality of life. Discontinuation of TKIs is the next frontier in CML. In select patients with sustained deep molecular remission, a discontinuation of TKI is associated with a durable treatment-free remission in approximately 50%. Patient engagement in their discontinuation can be achieved through a provider multi-team coaching, is complementary to the available guidelines, and may provide an additional safety net so that these discontinuations remain safe when applied in general practices.
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Affiliation(s)
- Hanna Jean Khoury
- From the Winship Cancer Institute, Emory University, Atlanta, GA; The University of Texas MD Anderson Cancer Center, Houston, TX; Medizinische Fakultät Mannheim der Universität Heidelberg, Mannheim, Germany
| | - Loretta A Williams
- From the Winship Cancer Institute, Emory University, Atlanta, GA; The University of Texas MD Anderson Cancer Center, Houston, TX; Medizinische Fakultät Mannheim der Universität Heidelberg, Mannheim, Germany
| | - Ehab Atallah
- From the Winship Cancer Institute, Emory University, Atlanta, GA; The University of Texas MD Anderson Cancer Center, Houston, TX; Medizinische Fakultät Mannheim der Universität Heidelberg, Mannheim, Germany
| | - Rüdiger Hehlmann
- From the Winship Cancer Institute, Emory University, Atlanta, GA; The University of Texas MD Anderson Cancer Center, Houston, TX; Medizinische Fakultät Mannheim der Universität Heidelberg, Mannheim, Germany
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16
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Mahon FX. Treatment-free remission in CML: who, how, and why? HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2017; 2017:102-109. [PMID: 29222243 PMCID: PMC6142562 DOI: 10.1182/asheducation-2017.1.102] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chronic myeloid leukemia (CML) is the best example of successful targeted therapy. Today, the overall survival of patients with CML treated by using tyrosine kinase inhibitors (TKIs) is very close to that of the healthy population. The current question is: how can we further ameliorate the clinical outcome of patients with CML? Clinical trials have shown that some patients with CML in the chronic phase who achieve sustained deep molecular responses on TKI therapy can safely suspend therapy with no evidence of relapse. The long follow-up studies and the number of eligible patients have now validated the concept of treatment-free remission (ie, the ability to maintain a molecular response after stopping therapy). It should be considered as the future criterion to evaluate the success of clinical trials, especially if we want to take into account the quality of life of patients in addition to the economic aspect. Because post-TKI discontinuation follow-ups have been increasing over time with no evidence of relapse in some patients, the next step for the coming decade will be to address the topic of CML cure.
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Affiliation(s)
- Francois-Xavier Mahon
- Institut Bergonié, Cancer Centre, Laboratory of Mammary and Leukemic Oncogenesis: Genetic Diversity and Resistance to Treatment, INSERM U1218, University of Bordeaux, Bordeaux, France
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17
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Abstract
Abstract
Chronic myeloid leukemia (CML) is the best example of successful targeted therapy. Today, the overall survival of patients with CML treated by using tyrosine kinase inhibitors (TKIs) is very close to that of the healthy population. The current question is: how can we further ameliorate the clinical outcome of patients with CML? Clinical trials have shown that some patients with CML in the chronic phase who achieve sustained deep molecular responses on TKI therapy can safely suspend therapy with no evidence of relapse. The long follow-up studies and the number of eligible patients have now validated the concept of treatment-free remission (ie, the ability to maintain a molecular response after stopping therapy). It should be considered as the future criterion to evaluate the success of clinical trials, especially if we want to take into account the quality of life of patients in addition to the economic aspect. Because post-TKI discontinuation follow-ups have been increasing over time with no evidence of relapse in some patients, the next step for the coming decade will be to address the topic of CML cure.
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18
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Rea D, Mahon FX. How I manage relapse of chronic myeloid leukaemia after stopping tyrosine kinase inhibitor therapy. Br J Haematol 2017; 180:24-32. [PMID: 29048128 DOI: 10.1111/bjh.14973] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
During the last 10 years, clinical trials formally demonstrated that about 50% of patients with chronic phase (CP) chronic myeloid leukaemia (CML) who achieve and maintain deep molecular responses for a prolonged period of time during treatment with imatinib or new generation tyrosine kinase inhibitors (TKIs) may successfully stop their anti-leukaemic therapy. Based on the accumulated knowledge from abundant clinical trial experience, TKI discontinuation is becoming an important goal to achieve and is about to enter clinical practice. This review focuses on relapse definition, laboratory tests to identify relapse and relapse management after TKI discontinuation.
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Affiliation(s)
- Delphine Rea
- Service d'hématologie Adulte, Unité INSERM, UMR-1160 and France Intergroupe des Leucémies Myéloïdes Chroniques (Fi-LMC), Hôpital Saint-Louis, Paris, France
| | - François-Xavier Mahon
- Unicancer Center, Institut Bergonié and France Intergroupe des Leucémies Myéloïdes Chroniques (Fi-LMC), Bordeaux, France
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19
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Can any patients with chronic myeloid leukemia outside of a clinical trial have their tyrosine kinase inhibitor discontinued? Curr Opin Hematol 2017; 24:125-131. [PMID: 28099274 DOI: 10.1097/moh.0000000000000321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE OF REVIEW This article critically appraises the state of treatment-free remission as a strategy for patients with chronic myeloid leukemia (CML) in deep remission after therapy with tyrosine kinase inhibitors (TKIs). RECENT FINDINGS Approximately half of patients with CML defined fairly narrowly by trial criteria - TKI sensitive, in deep molecular remission for a defined period - can successfully maintain protective levels of response after TKI cessation. Those who cannot appear at very low risk of disease control loss and can promptly regain remission with TKI resumption. Increasing numbers of patients followed longer term in trials have proven as well as a lack of additional late relapse in either group and that 'functional cure' of CML is feasible. Both the definition of remission sufficient to attempt treatment-free remission and the trigger to resume treatment have been relaxed somewhat while outcomes have remained the same. Based on repeated confirmatory data, economic pressures, and pragmatism, the question of feasibility and safety of TKI cessation outside of clinical trials is at hand. SUMMARY TKI cessation outside of clinical trials, if performed under strict guidelines, utilizing optimal monitoring techniques, with counsel available from experts in the field, and after full disclosure of the risks and benefits with the patient, may be safe (see video, supplemental digital content 1, which summarizes the abstract and offers the author's perspective,http://links.lww.com/COH/A15).
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20
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Schütz C, Inselmann S, Sausslele S, Dietz CT, Müller MC, Eigendorff E, Brendel CA, Metzelder SK, Brümmendorf TH, Waller C, Dengler J, Goebeler ME, Herbst R, Freunek G, Hanzel S, Illmer T, Wang Y, Lange T, Finkernagel F, Hehlmann R, Huber M, Neubauer A, Hochhaus A, Guilhot J, Xavier Mahon F, Pfirrmann M, Burchert A. Expression of the CTLA-4 ligand CD86 on plasmacytoid dendritic cells (pDC) predicts risk of disease recurrence after treatment discontinuation in CML. Leukemia 2017; 31:829-836. [DOI: 10.1038/leu.2017.9] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/15/2016] [Accepted: 12/21/2016] [Indexed: 12/23/2022]
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21
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Saußele S, Richter J, Hochhaus A, Mahon FX. The concept of treatment-free remission in chronic myeloid leukemia. Leukemia 2016; 30:1638-47. [PMID: 27133824 PMCID: PMC4980559 DOI: 10.1038/leu.2016.115] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/22/2016] [Accepted: 03/30/2016] [Indexed: 02/08/2023]
Abstract
The advent of tyrosine kinase inhibitors (TKI) into the management of patients with chronic myeloid leukemia (CML) has profoundly improved prognosis. Survival of responders is approaching that of the general population but lifelong treatment is still recommended. In several trials, TKI treatment has been stopped successfully in approximately half of the patients with deep molecular response. This has prompted the development of a new concept in the evaluation of CML patients known as 'treatment-free remission'. The future in CML treatment will be to define criteria for the safe and most promising discontinuation of TKI on one hand, and, on the other, to increase the number of patients available for such an attempt. Until safe criteria have been defined, discontinuation of therapy is still experimental and should be restricted to clinical trials or registries. This review will provide an overview of current knowledge as well as an outlook on future challenges.
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Affiliation(s)
- S Saußele
- III. Medizinische Klinik, Universitätsmedizin, Medizinische Fakultät Mannheim der Universität Heidelberg, Mannheim, Germany
| | - J Richter
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - A Hochhaus
- Klinik für Innere Medizin II, Hämatologie/Onkologie, Universitätsklinikum Jena, Jena, Germany
| | - F-X Mahon
- Bergonié Cancer Institute, INSERM Unit 916, University of Bordeaux, Bordeaux, France
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22
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Safety and efficacy of the combination of pegylated interferon-α2b and dasatinib in newly diagnosed chronic-phase chronic myeloid leukemia patients. Leukemia 2016; 30:1853-60. [DOI: 10.1038/leu.2016.121] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/05/2016] [Accepted: 04/08/2016] [Indexed: 01/13/2023]
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23
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Moving treatment-free remission into mainstream clinical practice in CML. Blood 2016; 128:17-23. [PMID: 27013442 DOI: 10.1182/blood-2016-01-694265] [Citation(s) in RCA: 237] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/22/2016] [Indexed: 12/16/2022] Open
Abstract
The dramatic success of tyrosine kinase inhibitors (TKIs) has led to the widespread perception that chronic myeloid leukemia (CML) has become another chronic disease, where lifelong commitment to pharmacologic control is the paradigm. Recent trials demonstrate that some CML patients who have achieved stable deep molecular response can safely cease their therapy without relapsing (treatment free remission [TFR]). Furthermore, those who are unsuccessful in their cessation attempt can safely re-establish remission after restarting their TKI therapy. Based on the accumulated data on TFR, we propose that it is now time to change our approach for the many CML patients who have achieved a stable deep molecular response on long-term TKI therapy. Perhaps half of these patients could successfully achieve TFR if offered the opportunity. For many of these patients ongoing therapy is impairing quality of life and imposing a heavy financial burden while arguably achieving nothing. This recommendation is based on the evident safety of cessation attempts and TFR in the clinical trial setting. We acknowledge that there are potential risks associated with cessation attempts in wider clinical practice, but this should not deter us. Instead we need to establish criteria for safe and appropriate TKI cessation. Clinical trials will enable us to define the best strategies to achieve TFR, but clinicians need guidance today about how to approach this issue with their patients. We outline circumstances in which it would be in the patient's best interest to continue TKI, as well as criteria for a safe TFR attempt.
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24
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Zhang B, Li L, Ho Y, Li M, Marcucci G, Tong W, Bhatia R. Heterogeneity of leukemia-initiating capacity of chronic myelogenous leukemia stem cells. J Clin Invest 2016; 126:975-91. [PMID: 26878174 DOI: 10.1172/jci79196] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/04/2016] [Indexed: 12/27/2022] Open
Abstract
Chronic myelogenous leukemia (CML) results from transformation of a long-term hematopoietic stem cell (LTHSC) by expression of the BCR-ABL fusion gene. However, BCR-ABL-expressing LTHSCs are heterogeneous in their capacity as leukemic stem cells (LSCs). Although discrepancies in proliferative, self-renewal, and differentiation properties of normal LTHSCs are being increasingly recognized, the mechanisms underlying heterogeneity of leukemic LTHSCs are poorly understood. Using a CML mouse model, we identified gene expression differences between leukemic and nonleukemic LTHSCs. Expression of the thrombopoietin (THPO) receptor MPL was elevated in leukemic LTHSC populations. Compared with LTHSCs with low MPL expression, LTHSCs with high MPL expression showed enhanced JAK/STAT signaling and proliferation in response to THPO in vitro and increased leukemogenic capacity in vivo. Although both G0 and S phase subpopulations were increased in LTHSCs with high MPL expression, LSC capacity was restricted to quiescent cells. Inhibition of MPL expression in CML LTHSCs reduced THPO-induced JAK/STAT signaling and leukemogenic potential. These same phenotypes were also present in LTHSCs from patients with CML, and patient LTHSCs with high MPL expression had reduced sensitivity to BCR-ABL tyrosine kinase inhibitor treatment but increased sensitivity to JAK inhibitors. Together, our studies identify MPL expression levels as a key determinant of heterogeneous leukemia-initiating capacity and drug sensitivity of CML LTHSCs and suggest that high MPL-expressing CML stem cells are potential targets for therapy.
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25
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Burchert A, Saussele S, Eigendorff E, Müller MC, Sohlbach K, Inselmann S, Schütz C, Metzelder SK, Ziermann J, Kostrewa P, Hoffmann J, Hehlmann R, Neubauer A, Hochhaus A. Interferon alpha 2 maintenance therapy may enable high rates of treatment discontinuation in chronic myeloid leukemia. Leukemia 2015; 29:1331-5. [PMID: 25712735 DOI: 10.1038/leu.2015.45] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 01/14/2015] [Accepted: 01/20/2015] [Indexed: 01/06/2023]
Abstract
A minority of chronic myeloid leukemia (CML) patients is capable of successfully discontinuing imatinib. Treatment modalities to increase this proportion are currently unknown. Here, we assessed the role of interferon alpha 2a (IFN) on therapy discontinuation in a previously reported cohort of 20 chronic phase CML patients who were treated upfront with IFN alpha plus imatinib followed by IFN monotherapy to maintain cytogenetic or molecular remission (MR) after imatinib discontinuation. After a median follow-up of 7.9 years (range, 5.2-12.2), relapse-free survival was 73% (8/11 patients) and 84% (5/6 patients) for patients who discontinued imatinib in major MR (MMR) and MR4/MR4.5, respectively. Ten patients discontinued IFN after a median of 4.5 years (range, 0.24-9.3). After a median of 2.8 years (range, 0.7-5.1), nine of them remain in ongoing treatment-free remission with MR5 (n=6) and MR4.5 (n=3). The four patients who still administer IFN are in stable MR5, MR4.5, MR4, and MMR, respectively. In conclusion, an IFN/imatinib induction treatment followed by a temporary IFN maintenance therapy may enable a high rate of treatment discontinuation in CML patients in at least MMR when stopping imatinib.
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Affiliation(s)
- A Burchert
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - S Saussele
- III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany
| | - E Eigendorff
- Abt. f. Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Jena, Germany
| | - M C Müller
- III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany
| | - K Sohlbach
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - S Inselmann
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - C Schütz
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - S K Metzelder
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - J Ziermann
- Abt. f. Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Jena, Germany
| | - P Kostrewa
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - J Hoffmann
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - R Hehlmann
- III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany
| | - A Neubauer
- Klinik für Hämatologie/Onkologie und Immunologie, Universitätsklinikum Gießen und Marburg, Standort Marburg, Philipps Universität Marburg, Marburg, Germany
| | - A Hochhaus
- Abt. f. Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Jena, Germany
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26
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Ilander M, Kreutzman A, Mustjoki S. IFNα induces prolonged remissions modeling curative immunologic responses in chronic myeloid leukemia. Oncoimmunology 2014; 3:e28781. [PMID: 25050224 PMCID: PMC4063137 DOI: 10.4161/onci.28781] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 04/03/2014] [Indexed: 11/23/2022] Open
Abstract
Tyrosine kinase inhibitor therapy has dramatically changed the outcome of chronic myeloid leukemia (CML) patients. However, the treatment is not considered to be curative and may present deleterious side effects, such that additional therapy options are warranted. Here, we discuss the beneficial immunomodulatory effects of interferon α (IFNα) therapy and the immunological changes related to optimal treatment responses.
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Affiliation(s)
- Mette Ilander
- Hematology Research Unit; Department of Hematology; University of Helsinki and Helsinki University Central Hospital Cancer Center; Helsinki, Finland
| | - Anna Kreutzman
- Hematology Research Unit; Department of Hematology; University of Helsinki and Helsinki University Central Hospital Cancer Center; Helsinki, Finland
| | - Satu Mustjoki
- Hematology Research Unit; Department of Hematology; University of Helsinki and Helsinki University Central Hospital Cancer Center; Helsinki, Finland
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27
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Marin D. Patient With Chronic Myeloid Leukemia in Complete Cytogenetic Response: What Does It Mean, and What Does One Do Next? J Clin Oncol 2014; 32:379-84. [DOI: 10.1200/jco.2013.52.9230] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- David Marin
- Imperial College London, Hammersmith Hospital, London, United Kingdom
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28
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Ilander M, Kreutzman A, Rohon P, Melo T, Faber E, Porkka K, Vakkila J, Mustjoki S. Enlarged memory T-cell pool and enhanced Th1-type responses in chronic myeloid leukemia patients who have successfully discontinued IFN-α monotherapy. PLoS One 2014; 9:e87794. [PMID: 24498197 PMCID: PMC3909235 DOI: 10.1371/journal.pone.0087794] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 01/02/2014] [Indexed: 01/01/2023] Open
Abstract
A small proportion of chronic myeloid leukemia patients treated with interferon-α (IFN-α) monotherapy are able to discontinue the treatment without disease relapse although residual leukemia cells are present. Recently, we showed that these patients have increased amount of NK-cells and a distinct blood cytokine profile. We now aimed to study the function of NK- and T-cells in order to understand the role of the immune system in maintaining the treatment response after IFN-α discontinuation. The study included 13 patients: 5 patients were still treated with IFN-α monotherapy (IFN-ON, median treatment time 163 months) and 8 had stopped the treatment successfully (IFN-OFF, median time without therapy 42 months). Detailed immunophenotype and cytokine production of NK- and T-cells was analyzed with flow cytometry. In addition, the cytotoxicity of NK-cells was studied using K562 as target cells and both the degranulation and direct killing was measured. Compared to healthy controls, IFN-OFF patients had increased proportion of CD4+ effector memory (CCR7−CD45RA−; median 23% vs. healthy 16%, p = 0.009) and CD8+ central memory T-cells (CCR7+CD45RA−; median 26% vs. healthy 14%, p = 0.004). Further, upon stimulation the IFN-γ/TNF-α cytokine secretion by CD4+ T-cells was significantly enhanced in IFN-OFF patients (median 13.7% vs. healthy 7.8%, p = 0.01), and CD4+ effector and central memory cells were the main cytokine producers. No similar increase was observed in IFN-ON group (6.5%). In addition, the proportion of NK-cells was significantly increased in IFN-OFF patients (median IFN-OFF 24%, healthy 13%, p = 0.04), but their direct killing of K562 cells was impaired. The cytotoxicity of NK-cells was also diminished in IFN-ON patients. To conclude, in addition to elevated NK-cell count, IFN-OFF patients have increased amount of memory T-cells, which are able to induce strong cytokine response upon stimulation. This activity may contribute to the maintenance of prolonged remission after successful IFN-α discontinuation.
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MESH Headings
- Adult
- CD4 Lymphocyte Count
- Female
- Humans
- Immunologic Factors/administration & dosage
- Immunologic Memory/drug effects
- Interferon-alpha/administration & dosage
- K562 Cells
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Killer Cells, Natural/pathology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/immunology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Male
- Middle Aged
- Th1 Cells/immunology
- Th1 Cells/metabolism
- Th1 Cells/pathology
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Affiliation(s)
- Mette Ilander
- Hematology Research Unit Helsinki, Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Anna Kreutzman
- Hematology Research Unit Helsinki, Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Peter Rohon
- Department of Hemato-Oncology, Faculty Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | | | - Edgar Faber
- Department of Hemato-Oncology, Faculty Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Kimmo Porkka
- Hematology Research Unit Helsinki, Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Jukka Vakkila
- Hematology Research Unit Helsinki, Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Satu Mustjoki
- Hematology Research Unit Helsinki, Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
- * E-mail:
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29
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Koskenvesa P, Kreutzman A, Rohon P, Pihlman M, Vakkila E, Räsänen A, Vapaatalo M, Remes K, Lundán T, Hjorth-Hansen H, Vakkila J, Simonsson B, Mustjoki S, Porkka K. Imatinib and pegylated IFN-α2b discontinuation in first-line chronic myeloid leukemia patients following a major molecular response. Eur J Haematol 2014; 92:413-20. [DOI: 10.1111/ejh.12258] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Perttu Koskenvesa
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | - Anna Kreutzman
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | - Peter Rohon
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
- Department of Hemato-Oncology; Faculty Hospital Olomouc and Faculty of Medicine and Dentistry; Palacky University; Olomouc Czech Republic
| | - Markus Pihlman
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | - Emmi Vakkila
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | | | - Mirja Vapaatalo
- Department of Medicine; Helsinki University central Hospital; Helsinki Finland
| | - Kari Remes
- Turku University Central Hospital; Turku Finland
| | - Tuija Lundán
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
- TYKSLAB; Turku University Central Hospital; Turku Finland
| | - Henrik Hjorth-Hansen
- Department of Hematology; St Olavs Hospital; Norwegian University of Science and Technology (NTNU); Trondheim Norway
- Department of Cancer Research and Molecular Medicine; Norwegian University of Science and Technology (NTNU); Trondheim Norway
| | - Jukka Vakkila
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | | | - Satu Mustjoki
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
| | - Kimmo Porkka
- Hematology Research Unit Helsinki; Department of Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki Finland
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Rousselot P, Charbonnier A, Cony-Makhoul P, Agape P, Nicolini FE, Varet B, Gardembas M, Etienne G, Réa D, Roy L, Escoffre-Barbe M, Guerci-Bresler A, Tulliez M, Prost S, Spentchian M, Cayuela JM, Reiffers J, Chomel JC, Turhan A, Guilhot J, Guilhot F, Mahon FX. Loss of major molecular response as a trigger for restarting tyrosine kinase inhibitor therapy in patients with chronic-phase chronic myelogenous leukemia who have stopped imatinib after durable undetectable disease. J Clin Oncol 2013; 32:424-30. [PMID: 24323036 DOI: 10.1200/jco.2012.48.5797] [Citation(s) in RCA: 307] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
PURPOSE More than half of patients with chronic-phase chronic myelogenous leukemia (CP-CML) in complete molecular response (CMR) experience molecular relapse after imatinib discontinuation. We investigated loss of major molecular response (MMR) as a criterion for resuming therapy. PATIENTS AND METHODS A multicenter observational study (A-STIM [According to Stop Imatinib]) evaluating MMR persistence was conducted in 80 patients with CP-CML who had stopped imatinib after prolonged CMR. RESULTS Median time from imatinib initiation to discontinuation was 79 months (range, 30 to 145 months);median duration of CMR before imatinib discontinuation was 41 months (range, 24 to 96 months); median follow-up after discontinuation was 31 months (range, 8 to 92 months). Twenty-nine patients (36%) lost MMR after a median of 4 months off therapy (range, 2 to 17 months). Cumulative incidence of MMR loss was estimated as 35% (95% CI, 25% to 46%) at 12 months and 36% (95% CI, 26% to 47%) at 24 months, whereas probability of losing CMR was higher. Fluctuation of BCR-ABL transcript levels below the MMR threshold (≥ two consecutive positive values) was observed in 31% of patients after imatinib discontinuation. Treatment-free remission was estimated as 64% (95% CI, 54% to 75%) at 12 and 24 months and 61% (95% CI, 51% to 73%) at 36 months. Median to time to second CMR was estimated as 7.3 months in re-treated patients. CONCLUSION Loss of MMR is a practical and safe criterion for restarting therapy in patients with CML with prolonged CMR.
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Affiliation(s)
- Philippe Rousselot
- Philippe Rousselot, Hôpital Mignot, Université Versailles Saint-Quentin-en-Yvelines, Versailles; Aude Charbonnier, Institut Paoli Calmette, Marseille; Pascale Cony-Makhoul, Hôpital d'Annecy, Pringy; Philippe Agape, Hôpital Felix Guyon-Centre Hospitalier Universitaire en France (CHU) de la Réunion, La Réunion; Franck E. Nicolini, Centre Hospitalier Lyon Sud, Pierre-Bénite; Bruno Varet, Hôpital Necker, Assistance Publique-Hopitaux de Paris (AP-HP) et Université Paris Descartes; Delphine Réa and Jean Michel Cayuela, Hôpital Saint-Louis, AP-HP, Paris; Martine Gardembas, CHU d'Angers, Angers; Gabriel Etienne and Josy Reiffers, Institut Bergonié; François-Xavier Mahon, Hôpital Haut-Levèque et Université Bordeaux Ségalen, Bordeaux; Lydia Roy, Joëlle Guilhot, and François Guilhot, Institut National de la Santé et de la Recherche Médicale (INSERM) Centres d'Investigation Clinique CHU de Poitiers, Poitiers; Martine Escoffre-Barbe, Centre Hospitalier Pontchaillou, Rennes; Agnès Guerci-Bresler, CHU Brabois Vandoeuvre, Nancy; Michel Tulliez, Hôpital Henri Mondor, AP-HP, Créteil; Stéphane Prost, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institute of Emerging Diseases and Innovative Therapies, Fontenay-aux-Roses; Marc Spentchian, Hôpital Mignot, Le Chesnay; and Jean Claude Chomel and Ali Turhan, INSERM U935, Université Poitiers et Paris Sud, Le Kremlin Bicêtre, France
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31
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Striving to achieve safe, permanent treatment discontinuation in chronic myeloid leukemia. Leuk Res 2013; 37:1395-403. [DOI: 10.1016/j.leukres.2013.07.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 07/19/2013] [Indexed: 12/11/2022]
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32
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Safety and efficacy of imatinib cessation for CML patients with stable undetectable minimal residual disease: results from the TWISTER study. Blood 2013; 122:515-22. [PMID: 23704092 DOI: 10.1182/blood-2013-02-483750] [Citation(s) in RCA: 543] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Most patients with chronic myeloid leukemia (CML) treated with imatinib will relapse if treatment is withdrawn. We conducted a prospective clinical trial of imatinib withdrawal in 40 chronic-phase CML patients who had sustained undetectable minimal residual disease (UMRD) by conventional quantitative polymerase chain reaction (PCR) on imatinib for at least 2 years. Patients stopped imatinib and were monitored frequently for molecular relapse. At 24 months, the actuarial estimate of stable treatment-free remission was 47.1%. Most relapses occurred within 4 months of stopping imatinib, and no relapses beyond 27 months were seen. In the 21 patients treated with interferon before imatinib, a shorter duration of interferon treatment before imatinib was significantly associated with relapse risk, as was slower achievement of UMRD after switching to imatinib. Highly sensitive patient-specific BCR-ABL DNA PCR showed persistence of the original CML clone in all patients with stable UMRD, even several years after imatinib withdrawal. No patients with molecular relapse after discontinuation have progressed or developed BCR-ABL mutations (median follow-up, 42 months). All patients who relapsed remained sensitive to imatinib re-treatment. These results confirm the safety and efficacy of a trial of imatinib withdrawal in stable UMRD with frequent, sensitive molecular monitoring and early rescue of molecular relapse.
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33
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Abstract
Abstract
After more than a decade of treatment of chronic myeloid leukemia (CML) patients with the BCR-ABL tyrosine kinase inhibitor imatinib, and despite the impressive clinical results of this targeted therapeutic, many questions remain unresolved. One major question is how to cure CML, and the next step for the future will be to address this key issue. CML is a good model of cancer. The fact that the majority of CML patients who respond very well but discontinue tyrosine kinase inhibitors later show evidence of molecular recurrence focuses attention on the need for further research on leukemic stem cells. The challenge now is to understand why, after stopping treatment, the leukemia recurs in some patients but not in others. If we win this battle, this progress will certainly benefit the treatment and management of other leukemias and solid tumors and will validate this new topic.
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34
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Talpaz M, Hehlmann R, Quintás-Cardama A, Mercer J, Cortes J. Re-emergence of interferon-α in the treatment of chronic myeloid leukemia. Leukemia 2012; 27:803-12. [PMID: 23238589 PMCID: PMC3703612 DOI: 10.1038/leu.2012.313] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Treatment for chronic myeloid leukemia (CML) has evolved from chemotherapy (busulfan, hydroxyurea) to interferon-α (IFNα), and finally to tyrosine kinase inhibitors such as imatinib. Although imatinib has profoundly improved outcomes for patients with CML, it has limitations. Most significantly, imatinib cannot eradicate CML primitive progenitors, which likely accounts for the high relapse rate when imatinib is discontinued. IFNα, unlike imatinib, preferentially targets CML stem cells. Early studies with IFNα in CML demonstrated its ability to induce cytogenetic remission. Moreover, a small percentage of patients treated with IFNα were able to sustain durable remissions after discontinuing therapy and were probably cured. The mechanisms by which IFNα exerts its antitumor activity in CML are not well understood; however, activation of leukemia-specific immunity may have a role. Some clinical studies have demonstrated that the combination of imatinib and IFNα is superior to either therapy alone, perhaps because of their different mechanisms of action. Nonetheless, the side effects of IFNα often impede its administration, especially in combination therapy. Here, we review the role of IFNα in CML treatment and the recent developments that have renewed interest in this once standard therapy for patients with CML.
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Affiliation(s)
- M Talpaz
- Department of Internal Medicine, Division of Hematology Oncology, University of Michigan Comprehensive Cancer Center, Ann Arbor, MI 48109-5936, USA.
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35
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Abstract
The introduction of the tyrosine kinase inhibitor (TKI) imatinib in the treatment of Philadelphia chromosome-positive chronic myeloid leukemia (CML) has substantially improved the outcome of CML patients. Despite the positive results, problems and questions remained. This was the rationale to setup trials for treatment optimization, where imatinib was administered in higher dose and/or in combination with other therapy but where also new and potentially more efficacious second-generation TKI, nilotinib and dasatinib, were investigated. This review summarizes data of recently published first-line studies with the standard treatment imatinib 400 mg as one study arm. Results of randomized comparisons to higher-dose imatinib treatment, nilotinib or dasatinib are discussed. With regard to outcome interpretation, general aspects on statistical issues and endpoint definitions are put into focus. Considering decidedly increased longevity thanks to TKI treatment, future research should include the evaluation of the quality of life (QoL). Relating also to QoL, safe ways of drug discontinuation need to be investigated.
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Affiliation(s)
- Susanne Saussele
- Universitätsmedizin Mannheim, Universität Heidelberg, III. Medizinische Klinik, Mannheim, Germany.
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36
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Rohon P. Biological therapy and the immune system in patients with chronic myeloid leukemia. Int J Hematol 2012; 96:1-9. [PMID: 22661045 DOI: 10.1007/s12185-012-1116-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Revised: 05/22/2012] [Accepted: 05/23/2012] [Indexed: 02/01/2023]
Abstract
Chronic myeloid leukemia (CML) is a clonal myeloproliferative disorder of hematopoietic stem cells that has been recognized as a disease responsive to immunotherapy. Despite the huge success of the tyrosine kinase inhibitors (TKIs), CML remains for the most part incurable, probably due to treatment resistance of leukemic stem cells, which are responsible for rapid disease relapse after discontinuation of therapy. Only allogeneic stem cell transplantation enables disease eradication. In addition to the Bcr-Abl1 oncoprotein, TKIs also inhibit off-target kinases (e.g. c-kit, Src, Tec), some of them having physiological functions in immune responses. In vitro studies have implied immunomodulatory effects of TKIs and interferon-alpha (IFN-α), but comprehensive information from in vivo analyses is missing. This review summarizes the recent advances in the field of immunology of CML, including basic information about leukemia-associated antigens and peptide vaccines, that could lead to the incorporation of TKIs and IFN-α in future therapeutic, potentially curative, interventions for CML.
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Affiliation(s)
- Peter Rohon
- University Hospital, Olomouc, Czech Republic.
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37
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Chomel JC, Turhan AG. Chronic myeloid leukemia stem cells in the era of targeted therapies: resistance, persistence and long-term dormancy. Oncotarget 2012; 2:713-27. [PMID: 21946665 PMCID: PMC3248215 DOI: 10.18632/oncotarget.333] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Targeted therapies of chronic myeloid leukemia (CML) using tyrosine kinase inhibitors (TKI) have profoundly changed the natural history of the disease with a major impact on survival. Molecular monitoring with BCR-ABL quantification shows that a status of undetectable molecular residual disease (UMRD) is obtained in a significant minority of patients. However, it remains unclear whether these patients are definitively cured of their leukemia. Imatinib mesylate withdrawal trials have demonstrated the rapid appearance of the malignant clone in the majority of the patients whereas some patients remain in a state of UMRD. It has clearly been demonstrated that the most primitive stem cells are refractory to all TKIs used in clinical practice. In addition, long-term dormancy is one of the most fundamental characteristics of hematopoietic stem cells. In this context, we have recently undertaken a systematic analysis of the bone marrow stem cell compartment in several patients in durable UMRD. We have demonstrated the long-term persistence of a considerable amount of BCR-ABL-expressing stem cells, even in the absence of relapse. The phenomenon of long-term leukemic stem cell dormancy is of major importance in CML and one of the key questions in cancer biology in general. We discuss, here, the potential mechanisms, including intrinsic and microenvironmental factors, that control the response of leukemic stem cells (LSCs) to targeted therapies and potential novel strategies currently in progress with a curative intent. Moreover, we propose a molecular evaluation of the residual LSC compartment in selected patients in order to develop rational TKI-cessation strategies in CML.
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Affiliation(s)
- Jean-Claude Chomel
- Service d'Hématologie et Oncologie Biologique, CHU de Poitiers, Université de Poitiers, France
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38
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Faber E, Kuba A, Zapletalová J, Divoká M, Rožmanová Š, Rohoň P, Holzerová M, Jarošová M, Indrák K. Operational cures after interferon-alpha in patients with chronic myeloid leukemia in Central and Northern Moravia. J Interferon Cytokine Res 2011; 32:230-4. [PMID: 22191465 DOI: 10.1089/jir.2011.0108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We assessed long-term outcome of 118 consecutive patients in chronic phase of chronic myeloid leukemia (CML) treated with interferon-alpha (IFN-α) in the Central and Northern Moravia region between 1989 and 2006 with focus on operational cure. The median follow-up was 82.6 months (range 12.4-212.6). Eighteen (15.3%) patients achieved complete cytogenetic response (CCyR) after median 16.7 (3.7-40.8) months. Nine of these patients (7.6%) achieved BCR-ABL negativity in nested reverse transcriptase-polymerase chain reaction ["complete" molecular response (CMR)] and 6 of them have been operationally cured without any treatment for median 6 (4-10) years, while 2 continue with IFN-α and 1 died from CML-unrelated cause. Operationally cured patients had a significantly lower percentage of initial peripheral promyelocytes, blasts, and erythroblasts than the rest of patients treated for more than 12 months (P=0.01-0.03). Unlike patients with sole CCyR, the majority of whom lost CCyR despite continuing IFN-α therapy and required imatinib, patients who achieved CMR had excellent long-term outcome.
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Affiliation(s)
- Edgar Faber
- Department of Hemato-Oncology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Olomouc, Czech Republic.
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40
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Long-term persistence of molecular response after discontinuation of interferon-alpha in two patients with chronic myeloid leukaemia. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2011; 10:233-4. [PMID: 22044951 DOI: 10.2450/2011.0057-11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 06/28/2011] [Indexed: 11/21/2022]
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41
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Kreutzman A, Rohon P, Faber E, Indrak K, Juvonen V, Kairisto V, Voglová J, Sinisalo M, Flochová E, Vakkila J, Arstila P, Porkka K, Mustjoki S. Chronic myeloid leukemia patients in prolonged remission following interferon-α monotherapy have distinct cytokine and oligoclonal lymphocyte profile. PLoS One 2011; 6:e23022. [PMID: 21857985 PMCID: PMC3153480 DOI: 10.1371/journal.pone.0023022] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 07/05/2011] [Indexed: 01/21/2023] Open
Abstract
Before the era of tyrosine kinase inhibitors (TKIs), interferon-alpha (IFN-α) was the treatment of choice in chronic myeloid leukemia (CML). Curiously, some IFN-α treated patients were able to discontinue therapy without disease progression. The aim of this project was to study the immunomodulatory effects of IFN-α in CML patients in prolonged remission and isolate biological markers predicting response. Due to rarity of patients on IFN-α monotherapy, a relatively small cohort of patients still on treatment (IFN-ON, n = 10, median therapy duration 11.8 years) or had discontinued IFN-α therapy but remained in remission for >2 years (IFN-OFF, n = 9) were studied. The lymphocyte immunophenotype was analyzed with a comprehensive flow cytometry panel and plasma cytokine levels were measured with multiplex bead-based assay. In addition, the clonality status of different lymphocyte subpopulations was analyzed by TCR γ/δ rearrangement assay. Median NK-cell absolute number and proportion from lymphocytes in blood was higher in IFN-OFF patients as compared to IFN-ON patients or controls (0.42, 0.19, 0.21×109/L; 26%, 12%, 11%, respectively, p<0.001). The proportion of CD8+ T-cells was significantly increased in both patient groups and a larger proportion of T-cells expressed CD45RO. Most (95%) patients had significant numbers of oligoclonal lymphocytes characterized by T-cell receptor γ/δ rearrangements. Strikingly, in the majority of patients (79%) a distinct clonal Vγ9 gene rearrangement was observed residing in γδ+ T-cell population. Similar unique clonality pattern was not observed in TKI treated CML patients. Plasma eotaxin and MCP-1 cytokines were significantly increased in IFN-OFF patients. Despite the limited number of patients, our data indicates that IFN-α treated CML patients in remission have increased numbers of NK-cells and clonal γδ+ T-cells and a unique plasma cytokine profile. These factors may relate to anti-leukemic effects of IFN-α in this specific group of patients and account for prolonged therapy responses even after drug discontinuation.
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MESH Headings
- Adult
- Amino Acid Sequence
- Base Sequence
- CD3 Complex/metabolism
- Cytokines/metabolism
- Female
- Flow Cytometry
- Gene Rearrangement, T-Lymphocyte/genetics
- Humans
- Immunologic Factors/therapeutic use
- Immunophenotyping
- Interferon-alpha/therapeutic use
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/immunology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukocyte Common Antigens/metabolism
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Lymphocytes/metabolism
- Male
- Middle Aged
- Molecular Sequence Data
- Real-Time Polymerase Chain Reaction
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- Remission Induction
- Time Factors
- Young Adult
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Affiliation(s)
- Anna Kreutzman
- Hematology Research Unit, Biomedicum Helsinki, Helsinki University Central Hospital (HUCH), Helsinki, Finland
| | - Peter Rohon
- Hematology Research Unit, Biomedicum Helsinki, Helsinki University Central Hospital (HUCH), Helsinki, Finland
- Department of Hemato-Oncology, University Hospital Olomouc, Olomouc, Czech Republic
| | - Edgar Faber
- Department of Hemato-Oncology, University Hospital Olomouc, Olomouc, Czech Republic
| | - Karel Indrak
- Department of Hemato-Oncology, University Hospital Olomouc, Olomouc, Czech Republic
| | - Vesa Juvonen
- Department of Clinical Chemistry and TYKSLAB, Turku University Central Hospital, Turku, Finland
| | - Veli Kairisto
- Department of Clinical Chemistry and TYKSLAB, Turku University Central Hospital, Turku, Finland
| | - Jaroslava Voglová
- 2nd Department of Internal Medicine, Clinical Hematology, University Hospital Hradec Králové, Hradec Králové, Czech Republic
| | - Marjatta Sinisalo
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Emília Flochová
- Department of Hematology and Transfusiology, University Hospital Martin, Martin, Slovak Republic
| | - Jukka Vakkila
- Hematology Research Unit, Biomedicum Helsinki, Helsinki University Central Hospital (HUCH), Helsinki, Finland
| | - Petteri Arstila
- Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Kimmo Porkka
- Hematology Research Unit, Biomedicum Helsinki, Helsinki University Central Hospital (HUCH), Helsinki, Finland
- Division of Hematology, Department of Medicine, Helsinki University Central Hospital (HUCH), Helsinki, Finland
| | - Satu Mustjoki
- Hematology Research Unit, Biomedicum Helsinki, Helsinki University Central Hospital (HUCH), Helsinki, Finland
- Division of Hematology, Department of Medicine, Helsinki University Central Hospital (HUCH), Helsinki, Finland
- Laboratory of Hematology, Department of Clinical Chemistry, Helsinki University Central Hospital (HUCH), Helsinki, Finland
- * E-mail:
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O'Brien S, Berman E, Moore JO, Pinilla-Ibarz J, Radich JP, Shami PJ, Smith BD, Snyder DS, Sundar HM, Talpaz M, Wetzler M. NCCN Task Force report: tyrosine kinase inhibitor therapy selection in the management of patients with chronic myelogenous leukemia. J Natl Compr Canc Netw 2011; 9 Suppl 2:S1-25. [PMID: 21335443 PMCID: PMC4234100 DOI: 10.6004/jnccn.2011.0125] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The advent of imatinib has dramatically improved outcomes in patients with chronic myelogenous leukemia (CML). It has become the standard of care for all patients with newly diagnosed chronic-phase CML based on its successful induction of durable responses in most patients. However, its use is complicated by the development of resistance in some patients. Dose escalation might overcome this resistance if detected early. The second-generation tyrosine kinase inhibitors (TKIs) dasatinib and nilotinib provide effective therapeutic options for managing patients resistant or intolerant to imatinib. Recent studies have shown that dasatinib and nilotinib provide quicker and potentially better responses than standard-dose imatinib when used as a first-line treatment. The goal of therapy for patients with CML is the achievement of a complete cytogenetic response, and eventually a major molecular response, to prevent disease progression to accelerated or blast phase. Selecting the appropriate TKI depends on many factors, including disease phase, primary or secondary resistance to TKI, the agent's side effect profile and its relative effectiveness against BCR-ABL mutations, and the patient's tolerance to therapy. In October 2010, NCCN organized a task force consisting of a panel of experts from NCCN Member Institutions with expertise in the management of patients with CML to discuss these issues. This report provides recommendations regarding the selection of TKI therapy for the management of patients with CML based on the evaluation of available published clinical data and expert opinion among the task force members.
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Burchert A, Neubauer A. [Chronic myeloid leukemia. Diagnostics, therapy and future strategy]. Internist (Berl) 2011; 52:283-93; quiz 294-5. [PMID: 21253680 DOI: 10.1007/s00108-010-2791-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Survival of patients with chronic myeloid leukemia (CML) has dramatically improved with the introduction of the BCR-ABL-specific tyrosine kinase inhibitor imatinib. As a rule patients on therapy with imatinib achieve permanent complete cytogenetic and molecular remission. Patients who are primarily refractive to imatinib or lose remission achieved using imatinib are in the minority. This group has a poor prognosis. This article gives a transparent review of the diagnostics necessary when CML is primarily diagnosed and for assessment of the response during the course of the therapy. The guidelines developed for this procedure by the European leukemia network on the type and frequency of surveillance controls as well as the diagnostic criteria for imatinib resistance or suboptimal response will be presented. The indications for allogenic stem cell transplantation and the administration of second generation BCR-ABL inhibitors will be discussed as therapeutic alternatives in cases of imatinib failure in a stage-specific manner. Finally a view on therapy targets and forms of future first-line therapy of CML will be given.
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Affiliation(s)
- A Burchert
- Klinik für Hämatologie, Onkologie und Immunologie, Philipps Universität Marburg, Universitätsklinikum Giessen und Marburg, Baldingerstraße, Marburg, Germany.
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Melo JV, Ross DM. Minimal residual disease and discontinuation of therapy in chronic myeloid leukemia: can we aim at a cure? HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2011; 2011:136-142. [PMID: 22160025 DOI: 10.1182/asheducation-2011.1.136] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Patients with chronic myeloid leukemia (CML) who have achieved a complete molecular response (CMR) defined by no detectable BCR-ABL mRNA on imatinib (IM) treatment often ask whether it is necessary for treatment to continue. We now know that approximately 40% of patients with a stable CMR for at least 2 years are able to stop IM treatment and remain in molecular remission for at least 2 years. This exciting observation has raised hopes that many patients can be cured of CML without the need for transplantation and its attendant risks. One might argue that for many patients maintenance therapy with IM or an alternative kinase inhibitor is so well tolerated that there is no imperative to stop treatment; however, chronic medical therapy may be associated with impaired quality of life and reduced compliance. Inferences about the biology of CML in patients responding to kinase inhibitors can be drawn from clinical experience, molecular monitoring data, and experimental observations. We summarize this information herein, and propose 3 possible pathways to "cure" of CML by kinase inhibitors: stem-cell depletion, stem-cell exhaustion, and immunological control.
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Affiliation(s)
- Junia V Melo
- Directorate of Haematology, SA Pathology, and Centre for Cancer Biology, University of Adelaide, Adelaide, Australia.
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Hochhaus A. Educational session: managing chronic myeloid leukemia as a chronic disease. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2011; 2011:128-135. [PMID: 22160024 DOI: 10.1182/asheducation-2011.1.128] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Elucidation of the pathogenesis of chronic myeloid leukemia (CML) and the introduction of tyrosine kinase inhibitors (TKIs) has transformed this disease from being invariably fatal to being the type of leukemia with the best prognosis. Median survival associated with CML is estimated at > 20 years. Nevertheless, blast crisis occurs at an incidence of 1%-2% per year, and once this has occurred, treatment options are limited and survival is short. Due to the overall therapeutic success, the prevalence of CML is gradually increasing. The optimal management of this disease includes access to modern therapies and standardized surveillance methods for all patients, which will certainly create challenges. Furthermore, all available TKIs show mild but frequent side effects that may require symptomatic therapy. Adherence to therapy is the key prerequisite for efficacy of the drugs and for long-term success. Comprehensive information on the nature of the disease and the need for the continuous treatment using the appropriate dosages and timely information on efficacy data are key factors for optimal compliance. Standardized laboratory methods are required to provide optimal surveillance according to current recommendations. CML occurs in all age groups. Despite a median age of 55-60 years, particular challenges are the management of the disease in children, young women with the wish to get pregnant, and older patients. The main challenges in the long-term management of CML patients are discussed in this review.
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Abstract
Previous experience in the treatment of chronic myeloid leukaemia (CML) has shown that the achievement of clinical, morphological and cytogenetic remission does not indicate eradication of the disease. A complete molecular response (CMR; no detectable BCR-ABL mRNA) represents a deeper level of response, but even CMR is not a guarantee of elimination of the leukaemia, because the significance of CMR is determined by the detection limit of the assay that is used. Two studies of imatinib cessation in CMR are underway, cumulatively involving over 100 patients. The current estimated rate of stable CMR after stopping imatinib is approximately 40%, but the duration of follow-up is relatively short. The factors that determine relapse risk are yet to be identified. The intrinsic capacity of any residual leukaemia [corrected] cells to proliferate following the withdrawal of treatment may be important, but there may also be a role for immunological suppression of the leukaemia [corrected] clone. No currently available test can formally prove that the leukaemic clone is eradicated. Here we discuss the sensitive measurement of minimal residual disease, and speculate on the biology of BCR-ABL-positive cells that may persist after effective therapy of CML.
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Affiliation(s)
- D M Ross
- Department of Haematology, SA Pathology Centre for Cancer Biology, University of Adelaide, Adelaide, Australia
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In search of the original leukemic clone in chronic myeloid leukemia patients in complete molecular remission after stem cell transplantation or imatinib. Blood 2010; 116:1329-35. [PMID: 20462961 DOI: 10.1182/blood-2009-11-255109] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
It is not clear if absence of BCR-ABL transcripts--complete molecular response (CMR)--is synonymous with, or required for, cure of chronic myeloid leukemia (CML). Some patients achieve CMR with imatinib (IM), but most relapse shortly after treatment discontinuation. Furthermore, most patients in long-term remission (LTR) post-stem cell transplantation (SCT) are considered functionally cured, although some remain occasionally positive for low-level BCR-ABL mRNA. Interpretation of the latter is complicated because it has been observed in healthy subjects. We designed a patient-specific, highly sensitive, DNA quantitative polymerase chain reaction to test follow-up samples for the original leukemic clone, identified by its unique genomic BCR-ABL fusion (gBCR-ABL). In 5 IM-treated patients in CMR, gBCR-ABL was detected in transcript-negative samples; 4 patients became gBCR-ABL-negative with continuing IM therapy. In contrast, of 9 patients in LTR (13-27 years) post-SCT, gBCR-ABL was detected in only 1, despite occasional transcript-positive samples in 8 of them. In conclusion, in IM-treated patients, absence of transcripts should not be interpreted as absence of the leukemic clone, although continuing IM after achievement of CMR may lead to further reduction of residual disease. Post-SCT, we found little evidence that the transcripts occasionally detected originate from the leukemic clone.
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Burchert A, Müller MC, Kostrewa P, Erben P, Bostel T, Liebler S, Hehlmann R, Neubauer A, Hochhaus A. Sustained molecular response with interferon alfa maintenance after induction therapy with imatinib plus interferon alfa in patients with chronic myeloid leukemia. J Clin Oncol 2010; 28:1429-35. [PMID: 20142590 DOI: 10.1200/jco.2009.25.5075] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Imatinib induces sustained remissions in patients with chronic myelogenous leukemia (CML), but fails to eradicate CML stem cells. This is of major concern regarding the issues of cure, long-term imatinib tolerability, and imatinib resistance. We therefore asked whether interferon alfa-2a (IFN) alone could maintain molecular remissions achieved by a prior combination therapy with imatinib and IFN. PATIENTS AND METHODS Imatinib therapy was stopped in 20 patients who had concomitantly been pretreated with imatinib and IFN for a median of 2.4 years (range, 0.2 to 4.8 years) and 2.5 years (range, 0.2 to 4.9 years), respectively. After imatinib discontinuation, remission status was monitored monthly by quantitative analysis of the peripheral-blood BCR-ABL mRNA levels using real-time polymerase chain reaction. Proteinase-3 expression and proteinase-3-specific cytotoxic T cells (CTLs) were longitudinally measured to assess putative markers of IFN response. RESULTS With a median time of 2.4 years after imatinib withdrawal (range, 0.5 to 4.0 years), 15 (75%) of 20 patients remained in remission. The number of patients in complete molecular remission increased under IFN from two patients at baseline to five patients after 2 years. Relapses occurred in five patients within 0.4 years (range, 0.2 to 0.8 years), but patients underwent rescue treatment with imatinib, re-establishing molecular remission. IFN therapy was associated with an increase in the expression of leukemia-associated antigen proteinase 3 and induction of proteinase-3-specific CTLs. CONCLUSION Treatment with IFN enables discontinuation of imatinib in most patients after prior imatinib/IFN combination therapy and may result in improved molecular response. Induction of a proteinase-3-specific CTL response by IFN may contribute to this effect.
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Affiliation(s)
- Andreas Burchert
- Klinik für Hämatologie, Onkologie und Immunologie, Philipps Universität Marburg und Universitätsklinikum Giessen und Marburg, Standort Marburg, Marburg, Germany
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ICSBP-mediated immune protection against BCR-ABL-induced leukemia requires the CCL6 and CCL9 chemokines. Blood 2009; 113:3813-20. [PMID: 19171873 DOI: 10.1182/blood-2008-07-167189] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Interferon (IFN) is effective at inducing complete remissions in patients with chronic myelogenous leukemia (CML), and evidence supports an immune mechanism. Here we show that the type I IFNs (alpha and beta) regulate expression of the IFN consensus sequence-binding protein (ICSBP) in BCR-ABL-transformed cells and as shown previously for ICSBP, induce a vaccine-like immunoprotective effect in a murine model of BCR-ABL-induced leukemia. We identify the chemokines CCL6 and CCL9 as genes prominently induced by the type I IFNs and ICSBP, and demonstrate that these immunomodulators are required for the immunoprotective effect of ICSBP expression. Insights into the role of these chemokines in the antileukemic response of IFNs suggest new strategies for immunotherapy of CML.
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