51
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Barratt DT, Cox HK, Menelaou A, Yeung DT, White DL, Hughes TP, Somogyi AA. CYP2C8 Genotype Significantly Alters Imatinib Metabolism in Chronic Myeloid Leukaemia Patients. Clin Pharmacokinet 2016; 56:977-985. [DOI: 10.1007/s40262-016-0494-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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52
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Cortes J, Kantarjian H. Chronic myeloid leukemia: sequencing of TKI therapies. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2016; 2016:164-169. [PMID: 27913476 PMCID: PMC6142480 DOI: 10.1182/asheducation-2016.1.164] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Multiple tyrosine kinase inhibitors (TKIs) are available for managing patients with chronic myeloid leukemia. Although most patients have a favorable outcome with their initial therapy, whether imatinib or a second-generation TKI was used, some will require subsequent use of one or more different TKIs. Such sequencing might be indicated in a reactive way (ie, for patients who have experienced resistance or intolerance to their initial therapy) or in a proactive way (ie, for patients with a somewhat favorable outcome who have not reached an "optimal" outcome). Sequencing of TKIs has become standard practice, and the proper use of sequenced TKIs is likely to optimize outcomes and resource utilization.
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Affiliation(s)
- Jorge Cortes
- Department of Leukemia, MD Anderson Cancer Center, Houston, TX
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53
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Abstract
Imatinib mesylate was the first tyrosine kinase inhibitor (TKI) approved for the management of chronic myeloid leukemia. Imatinib produces acceptable responses in approximately 60% of patients, with approximately 20% discontinuing therapy because of intolerance and approximately 20% developing drug resistance. The advent of newer TKIs, such as nilotinib, dasatinib, bosutinib, and ponatinib, has provided multiple options for patients. These agents are more potent, have unique adverse effect profiles, and are more likely to achieve relevant milestones, such as early molecular responses (3-6 months) and optimal molecular responses (12 months). The acquisition of BCR-ABL kinase domain mutations is also reportedly lower with these drugs. Thus far, none of the randomized phase III clinical trials have shown a clinically significant survival difference between frontline imatinib versus newer TKIs. Cost and safety issues with the newer TKIs, such as vascular disease with nilotinib and ponatinib and pulmonary hypertension with dasatinib, have dampened the enthusiasm of using these drugs as frontline options. While the utility of new TKIs in the setting of imatinib failure or intolerance is clear, their use as frontline agents should factor in the age of the patient, additional comorbidities, risk stratification (Sokal score), and cost. Combination therapies and newer agents with potential to eradicate quiescent chronic myeloid leukemia stem cells offers future hope.
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54
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Rosti G, Castagnetti F, Gugliotta G, Baccarani M. Tyrosine kinase inhibitors in chronic myeloid leukaemia: which, when, for whom? Nat Rev Clin Oncol 2016; 14:141-154. [PMID: 27752053 DOI: 10.1038/nrclinonc.2016.139] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The therapeutic armamentarium for chronic myeloid leukaemia (CML) comprises mainly tyrosine kinase inhibitors (TKIs), with several agents available for frontline treatment, or for the treatment of disease resistance or intolerance to the first-choice or second-choice drug. The availability of different drugs is a major achievement, but means that choices must be made - which can be difficult and questionable at times. The most important end point considered in decision-making regarding treatment for any cancer is overall survival, but additional factors (such as age, prognostic category, safety, or the possibility of achieving treatment-free remission) should be considered when selecting an agent for frontline treatment. Regardless of the TKI selected for first-line treatment, guidelines that define the importance of reaching specific response indicators and procedures for vigilant follow-up monitoring are established to ensure timely implementation of second-line TKIs. Herein, we discuss the benefits and risks of the different TKIs available for the treatment of patients with CML, and how to decide when to employ these agents at different treatment settings.
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Affiliation(s)
- Gianantonio Rosti
- Institute of Haematology and Medical Oncology Lorenzo ed Ariosto Seràgnoli, Department of Experimental, Diagnostic and Specialty Medicine, Bologna University School of Medicine, S.Orsola-Malpighi University Hospital, Via Massarenti 9, 40138 Bologna, Italy
| | - Fausto Castagnetti
- Institute of Haematology and Medical Oncology Lorenzo ed Ariosto Seràgnoli, Department of Experimental, Diagnostic and Specialty Medicine, Bologna University School of Medicine, S.Orsola-Malpighi University Hospital, Via Massarenti 9, 40138 Bologna, Italy
| | - Gabriele Gugliotta
- Institute of Haematology and Medical Oncology Lorenzo ed Ariosto Seràgnoli, Department of Experimental, Diagnostic and Specialty Medicine, Bologna University School of Medicine, S.Orsola-Malpighi University Hospital, Via Massarenti 9, 40138 Bologna, Italy
| | - Michele Baccarani
- Institute of Haematology and Medical Oncology Lorenzo ed Ariosto Seràgnoli, Department of Experimental, Diagnostic and Specialty Medicine, Bologna University School of Medicine, S.Orsola-Malpighi University Hospital, Via Massarenti 9, 40138 Bologna, Italy
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55
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Petrackova M, Hamsikova E, Duskova M, Ptackova P, Klamova H, Humlova Z, Vonka V. Predictive value of serum cytokine levels in chronic myeloid leukemia patients. Immunol Lett 2016; 179:61-67. [PMID: 27637765 DOI: 10.1016/j.imlet.2016.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/05/2016] [Accepted: 09/12/2016] [Indexed: 12/12/2022]
Abstract
Serum samples taken at diagnosis in 28 chronic myeloid leukemia patients were tested for the presence of 20 cytokines by a magnetic bead-based Bio-plex immunoassay. According to complete cytogenetic remission achieved at 12 months of treatment, patients were divided into groups with either optimal or non-optimal outcome. Patients with increased cytokine levels tended to react optimally to the therapy more frequently than those others. TGF-β3 was a notable exception; its levels were significantly higher in patients with non-optimal outcomes. Further analysis enabled us to define two combinations of cytokine cut-off levels - namely low TGF-β3 and either high IL-8 or high MCP-1-each of which corresponded to therapy outcome better than either Sokal or EUTOS scores.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Biomarkers
- Cytokines/blood
- Female
- Humans
- Kaplan-Meier Estimate
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/mortality
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy
- Male
- Middle Aged
- Predictive Value of Tests
- Prognosis
- Treatment Outcome
- Young Adult
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Affiliation(s)
- Martina Petrackova
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic.
| | - Eva Hamsikova
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Martina Duskova
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Pavlina Ptackova
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Hana Klamova
- Clinical Department, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Zuzana Humlova
- Department of Immunology and Microbiology, 1st Medical Faculty, Charles University, Prague, Czech Republic
| | - Vladimir Vonka
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
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56
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Branford S. Monitoring and defining early response: Where to draw the line? Best Pract Res Clin Haematol 2016; 29:284-294. [DOI: 10.1016/j.beha.2016.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/10/2016] [Indexed: 11/26/2022]
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57
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Sweet K, Pinilla-Ibarz J. Early switch in tyrosine kinase inhibitor therapy for patients with chronic myeloid leukemia: An emerging clinical question. Crit Rev Oncol Hematol 2016; 103:99-108. [DOI: 10.1016/j.critrevonc.2016.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 03/29/2016] [Accepted: 05/12/2016] [Indexed: 01/09/2023] Open
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58
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The clinical significance of ABCB1 overexpression in predicting outcome of CML patients undergoing first-line imatinib treatment. Leukemia 2016; 31:75-82. [DOI: 10.1038/leu.2016.179] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 06/07/2016] [Accepted: 06/10/2016] [Indexed: 12/16/2022]
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59
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Yun S, Vincelette ND, Segar JM, Dong Y, Shen Y, Kim DW, Abraham I. Comparative Effectiveness of Newer Tyrosine Kinase Inhibitors Versus Imatinib in the First-Line Treatment of Chronic-Phase Chronic Myeloid Leukemia Across Risk Groups: A Systematic Review and Meta-Analysis of Eight Randomized Trials. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2016; 16:e85-94. [DOI: 10.1016/j.clml.2016.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 03/06/2016] [Accepted: 03/21/2016] [Indexed: 10/22/2022]
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60
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Churchman ML, Evans K, Richmond J, Robbins A, Jones L, Shapiro IM, Pachter JA, Weaver DT, Houghton PJ, Smith MA, Lock RB, Mullighan CG. Synergism of FAK and tyrosine kinase inhibition in Ph + B-ALL. JCI Insight 2016; 1:86082. [PMID: 27123491 DOI: 10.1172/jci.insight.86082] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BCR-ABL1+ B progenitor acute lymphoblastic leukemia (Ph+ B-ALL) is an aggressive disease that frequently responds poorly to currently available therapies. Alterations in IKZF1, which encodes the lymphoid transcription factor Ikaros, are present in over 80% of Ph+ ALL and are associated with a stem cell-like phenotype, aberrant adhesion molecule expression and signaling, leukemic cell adhesion to the bone marrow stem cell niche, and poor outcome. Here, we show that FAK1 is upregulated in Ph+ B-ALL with further overexpression in IKZF1-altered cells and that the FAK inhibitor VS-4718 potently inhibits aberrant FAK signaling and leukemic cell adhesion, potentiating responsiveness to tyrosine kinase inhibitors, inducing cure in vivo. Thus, targeting FAK with VS-4718 is an attractive approach to overcome the deleterious effects of FAK overexpression in Ph+ B-ALL, particularly in abrogating the adhesive phenotype induced by Ikaros alterations, and warrants evaluation in clinical trials for Ph+ B-ALL, regardless of IKZF1 status.
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Affiliation(s)
- Michelle L Churchman
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Kathryn Evans
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, New South Wales, Sydney, Australia
| | - Jennifer Richmond
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, New South Wales, Sydney, Australia
| | - Alissa Robbins
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, New South Wales, Sydney, Australia
| | - Luke Jones
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, New South Wales, Sydney, Australia
| | | | | | | | - Peter J Houghton
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center San Antonio, San Antonio, Texas, USA
| | - Malcolm A Smith
- Cancer Therapy Evaluation Program, National Cancer Institute, Bethesda, Maryland, USA
| | - Richard B Lock
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, New South Wales, Sydney, Australia
| | - Charles G Mullighan
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
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61
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Abstract
The development of BCR/ABL1 tyrosine kinase inhibitors (TKIs) over the past 20 years has dramatically improved the outcomes for patients with every stage of Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML). Clinicians now have access to 5 oral, generally well-tolerated, and highly effective TKIs. How should these agents be used for an individual patient to ensure the best possible duration and quality-of-life, to avoid treatment-related complications, and potentially to achieve a cure at an affordable cost? Because CML patients may need to continue TKI therapy indefinitely, the long-term safety of each treatment option must be considered. Evidence-based care requires an understanding of the optimal use of these drugs, their specific early and late toxicities, the prognostic significance of achieving treatment milestones, and the critical importance of molecular monitoring. Efficacy is important, but treatment choice does not depend only on efficacy. Choosing among various treatment options is informed by understanding the distinct benefits and risks of each agent, along with careful consideration of patient-specific factors, such as risk status, age, and comorbidities.
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62
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TGF-α and IL-6 plasma levels selectively identify CML patients who fail to achieve an early molecular response or progress in the first year of therapy. Leukemia 2016; 30:1263-72. [PMID: 26898188 DOI: 10.1038/leu.2016.34] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/03/2016] [Accepted: 01/18/2016] [Indexed: 12/16/2022]
Abstract
Early molecular response (EMR, BCR-ABL1 (IS)⩽10% at 3 months) is a strong predictor of outcome in imatinib-treated chronic phase chronic myeloid leukemia (CP-CML) patients, but for patients who transform early, 3 months may be too late for effective therapeutic intervention. Here, we employed multiplex cytokine profiling of plasma samples to test newly diagnosed CP-CML patients who subsequently received imatinib treatment. A wide range of pro-inflammatory and angiogenesis-promoting cytokines, chemokines and growth factors were elevated in the plasma of CML patients compared with that of healthy donors. Most of these normalized after tyrosine kinase inhibitor treatment while others remained high in remission samples. Importantly, we identified TGF-α and IL-6 as novel biomarkers with high diagnostic plasma levels strongly predictive of subsequent failure to achieve EMR and deep molecular response, as well as transformation to blast crisis and event-free survival. Interestingly, high TGF-α alone can also delineate a poor response group raising the possibility of a pathogenic role. This suggests that the incorporation of these simple measurements to the diagnostic work-up of CP-CML patients may enable therapy intensity to be individualized early according to the cytokine-risk profile of the patient.
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63
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Jain P, Kantarjian H, Sasaki K, Jabbour E, Dasarathula J, Nogueras Gonzalez G, Verstovsek S, Borthakur G, Wierda W, Kadia T, Dellasala S, Pierce S, Ravandi F, O'Brien S, Cortes J. Analysis of 2013 European LeukaemiaNet (ELN) responses in chronic phase CML across four frontline TKI modalities and impact on clinical outcomes. Br J Haematol 2016; 173:114-26. [PMID: 26846160 DOI: 10.1111/bjh.13936] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 11/24/2015] [Indexed: 12/11/2022]
Abstract
This study assessed the relevance of 2013 European LeukaemiaNet (ELN) response categories on patients treated with common frontline tyrosine kinase inhibitors (TKI) in chronic myeloid leukaemia in chronic phase (CML-CP). Four hundred and eighty-seven patients treated with imatinib (400 mg; IM 400, n = 70; 800 mg; IM800, n = 201), dasatinib (n = 107) or nilotinib (n = 109) were analysed. Intention to treat (ITT) analysis indicated that the proportion of patients falling into optimal, warning and failure ELN categories were 89%, 6%, 6% at 3 months, 78%, 17% and 6% at 6 months, and 75%, 13% and 13% at 12 months, respectively. Rates of optimal response at 3 months were 75% for IM400, 90% for IM800, 89% for dasatinib and 97% for nilotinib; 41%, 80%, 86% and 89% at 6 months; and 47%, 77%, 76% and 87% at 12 months, respectively. Patients achieving optimal response had longer eventfree (EFS), failurefree (FFS), transformationfree (TFS) and overall survival (OS) compared to warning and failure responses at all-time points. Treatment with imatinib 800, dasatinib or nilotinib predicted for achieving an optimal response. Optimal response predicted for significantly longer EFS, FFS, TFS and OS at 3, 6 and 12 months, irrespective of the TKI modality used. ELN response categories reliably predicted outcomes in CML patients receiving commonly used TKIs.
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Affiliation(s)
- Preetesh Jain
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Internal Medicine, Utah, USA
| | - Hagop Kantarjian
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Koji Sasaki
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Elias Jabbour
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jyothsna Dasarathula
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Graciela Nogueras Gonzalez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Srdan Verstovsek
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Gautam Borthakur
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - William Wierda
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Tapan Kadia
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sara Dellasala
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sherry Pierce
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Farhad Ravandi
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Susan O'Brien
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jorge Cortes
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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64
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Akard LP, Bixby D. Considering baseline factors and early response rates to optimize therapy for chronic myeloid leukemia in chronic phase. Leuk Lymphoma 2016; 57:1002-14. [PMID: 26726949 DOI: 10.3109/10428194.2015.1122779] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Multiple BCR-ABL tyrosine kinase inhibitors (TKIs) are available for the treatment of chronic myeloid leukemia in chronic phase (CML-CP), and several baseline and on-treatment predictive factors have been identified that can be used to help guide TKI selection for individual patients. In particular, early molecular response (EMR; BCR-ABL ≤10% on the International Scale at 3 months) has become an accepted benchmark for evaluating whether patients with CML-CP are responding optimally to frontline TKI therapy. Failure to achieve EMR is considered an inadequate initial response according to the National Comprehensive Cancer Network guidelines and a warning response according to the European LeukemiaNet recommendations. Here we review data supporting the importance of achieving EMR for improving patients' long-term outcomes and discuss key considerations for selecting a frontline TKI in light of these data. Because a higher proportion of patients achieve EMR with second-generation TKIs such as nilotinib and dasatinib than with imatinib, these TKIs may be preferable for many patients, particularly those with known negative prognostic factors at baseline. We also discuss other considerations for frontline TKI choice, including toxicities, cost-effectiveness, and the emerging goals of deep molecular response and treatment-free remission.
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Affiliation(s)
- Luke P Akard
- a Indiana Blood and Marrow Transplantation, Franciscan St Francis Hospital and Health Centers , Indianapolis , IN , USA
| | - Dale Bixby
- b Division of Hematology and Oncology, Department of Internal Medicine , University of Michigan Comprehensive Cancer Center , Ann Arbor , MI , USA
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65
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KIR2DL5B genotype predicts outcomes in CML patients treated with response-directed sequential imatinib/nilotinib strategy. Blood 2015; 126:2720-3. [DOI: 10.1182/blood-2015-07-655589] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/18/2015] [Indexed: 11/20/2022] Open
Abstract
Key Points
KIR2DL5B is associated with poor molecular response and transformation-free survival in CML patients enrolled to the TIDEL-II study. KIR genotyping would select out high risk CML patients at baseline and allow better targeting of novel interventions.
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66
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Russo D, Malagola M, Skert C, Cancelli V, Turri D, Pregno P, Bergamaschi M, Fogli M, Testoni N, De Vivo A, Castagnetti F, Pungolino E, Stagno F, Breccia M, Martino B, Intermesoli T, Cambrin GR, Nicolini G, Abruzzese E, Tiribelli M, Bigazzi C, Usala E, Russo S, Russo-Rossi A, Lunghi M, Bocchia M, D'Emilio A, Santini V, Girasoli M, Lorenzo RD, Bernardi S, Palma AD, Cesana BM, Soverini S, Martinelli G, Rosti G, Baccarani M. Managing chronic myeloid leukaemia in the elderly with intermittent imatinib treatment. Blood Cancer J 2015; 5:e347. [PMID: 26383820 PMCID: PMC4648524 DOI: 10.1038/bcj.2015.75] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 07/21/2015] [Indexed: 01/18/2023] Open
Abstract
The aim of this study was to investigate the effects of a non-standard, intermittent imatinib treatment in elderly patients with Philadelphia-positive chronic myeloid leukaemia and to answer the question on which dose should be used once a stable optimal response has been achieved. Seventy-six patients aged ⩾65 years in optimal and stable response with ⩾2 years of standard imatinib treatment were enrolled in a study testing a regimen of intermittent imatinib (INTERIM; 1-month on and 1-month off). With a minimum follow-up of 6 years, 16/76 patients (21%) have lost complete cytogenetic response (CCyR) and major molecular response (MMR), and 16 patients (21%) have lost MMR only. All these patients were given imatinib again, the same dose, on the standard schedule and achieved again CCyR and MMR or an even deeper molecular response. The probability of remaining on INTERIM at 6 years was 48% (95% confidence interval 35-59%). Nine patients died in remission. No progressions were recorded. Side effects of continuous treatment were reduced by 50%. In optimal and stable responders, a policy of intermittent imatinib treatment is feasible, is successful in about 50% of patients and is safe, as all the patients who relapsed could be brought back to optimal response.
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Affiliation(s)
- D Russo
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - M Malagola
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - C Skert
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - V Cancelli
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - D Turri
- Ematologia 1-TMO, AOR Villa Sofia-Cervello, Palermo, Italy
| | - P Pregno
- S.C. Ematologia, Dipartimento di Oncologia ed Ematologia, A.O.U. Città della Salute e della Scienza di Torino, Torino, Italy
| | - M Bergamaschi
- Dipartimento di Terapie Oncologiche Integrate, IRCCS AOU S. Martino-IST, Genova, Italy
| | - M Fogli
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - N Testoni
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - A De Vivo
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - F Castagnetti
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - E Pungolino
- Division of Hematology, Department of Oncology and Hematology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - F Stagno
- Divisione Clinicizzata di Ematologia AOU Policlinico-V. Emanuele, University of Catania, Catania, Italy
| | - M Breccia
- Azienda Policlinico Umberto I, Sapienza Università, Roma, Italy
| | - B Martino
- Hematology Unit, ‘Bianchi-Melacrino-Morelli' Hospital, Reggio Calabria, Italy
| | - T Intermesoli
- Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy
| | - G R Cambrin
- University of Turin, San Luigi Gonzaga Hospital, Turin, Italy
| | - G Nicolini
- Hematology and Hematopoietic Stem Cell Transplant Center, San Salvatore Hospital, Pesaro, Italy
| | - E Abruzzese
- Hematology, S Eugenio Hospital Tor Vergata University, Rome, Italy
| | - M Tiribelli
- Division of Hematology and BMT, Azienda Ospedaliero—Universitaria di Udine, Udine, Italy
| | - C Bigazzi
- Hematology, Mazzoni Hospital, Ascoli Piceno, Italy
| | - E Usala
- U O Ematologia e CTMO Ospedale A., Businco-Cagliari, Italy
| | - S Russo
- UOC Ematologia AOU 'G Martino' Policlinico Universitario di Messina, Messina, Italy
| | - A Russo-Rossi
- Division of Hematology, University of Bari, Bari, Italy
| | - M Lunghi
- Division of Hematology, Department of Clinical and Experimental Medicine, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - M Bocchia
- Hematology and Transplants, University of Siena and AOUS, Siena, Italy
| | - A D'Emilio
- Department of Cellular Therapies and Haematology, San Bortolo Hospital, Vicenza, Italy
| | - V Santini
- Unità di Ematologia, AOU Careggi, University of Florence, Florence, Italy
| | - M Girasoli
- Hematology Department, 'A. Perrino' Hospital, Brindisi, Italy
| | - R Di Lorenzo
- Division of Haematology, Spirito Santo Hospital, Pescara, Italy
| | - S Bernardi
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - A Di Palma
- Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, Brescia, Italy
| | - B M Cesana
- DMMT, Unit of Medical Statistics, University of Brescia, Brescia, Italy
| | - S Soverini
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - G Martinelli
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - G Rosti
- Institute of Hematology 'L. & A. Seràgnoli', DIMES, University of Bologna, Bologna, Italy
| | - M Baccarani
- Department of Haematology-Oncology 'L. and A. Seràgnoli' – S. Orsola Malpighi Hospital, University of Bologna, Bologna, Italy
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Davies J. First-line therapy for CML: decisions, decisions. Lancet Haematol 2015; 2:e89-e90. [PMID: 26687802 DOI: 10.1016/s2352-3026(15)00022-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 02/11/2015] [Indexed: 06/05/2023]
Affiliation(s)
- Jeff Davies
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, John Vane Science Centre, London EC1M 6BQ, UK.
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Larson RA. Is there a best TKI for chronic phase CML? HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2015; 2015:250-256. [PMID: 26637730 DOI: 10.1182/asheducation-2015.1.250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The development of BCR/ABL1 tyrosine kinase inhibitors (TKIs) over the past 20 years has dramatically improved the outcomes for patients with every stage of Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML). Clinicians now have access to 5 oral, generally well-tolerated, and highly effective TKIs. How should these agents be used for an individual patient to ensure the best possible duration and quality-of-life, to avoid treatment-related complications, and potentially to achieve a cure at an affordable cost? Because CML patients may need to continue TKI therapy indefinitely, the long-term safety of each treatment option must be considered. Evidence-based care requires an understanding of the optimal use of these drugs, their specific early and late toxicities, the prognostic significance of achieving treatment milestones, and the critical importance of molecular monitoring. Efficacy is important, but treatment choice does not depend only on efficacy. Choosing among various treatment options is informed by understanding the distinct benefits and risks of each agent, along with careful consideration of patient-specific factors, such as risk status, age, and comorbidities.
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Affiliation(s)
- Richard A Larson
- Section of Hematology/Oncology, Department of Medicine, and Comprehensive Cancer Center, The University of Chicago, Chicago, IL
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