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Braga AGO, Barbosa Pagnano KB, Campioni MDP, Lopes ABP, Duarte GO, Metze K, Lorand-Metze I. Peripheral lymphocyte subsets as predicting factors for molecular recurrence after imatinib discontinuation in a phase 2 imatinib discontinuation trial in patients with chronic myeloid leukemia. Hematol Transfus Cell Ther 2024; 46:268-272. [PMID: 37442648 PMCID: PMC11221257 DOI: 10.1016/j.htct.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/17/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
INTRODUCTION Treatment-free remission (TFR) is successful in half of the patients with chronic myeloid leukemia who discontinue Imatinib (IM) after sustained molecular response. METHODS In a prospective trial, we used pioglitazone for 3 months before stopping IM in 30 patients. Percentages of peripheral blood lymphocyte subsets were assessed before and after treatment. The relation of these data with duration of IM treatment and TRF were examined. RESULTS The median time of IM treatment was 117.6 months. After discontinuation, 11 patients had molecular recurrence after 5.2 months (2.4 - 30). The observation time for those remaining in TFR was 46 (26 - 56) months. The independent factors for the maintenance of TFR were the duration of IM treatment and the percentage of double-positive T cells at IM stop. CONCLUSION A longer treatment with imatinib was associated with a longer TFR after discontinuation. Pioglitazone could act as an immunomodulator, increasing DP T cells which may contribute to prevent relapse.
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Affiliation(s)
| | | | | | | | | | - Konradin Metze
- Faculdade de Ciências Médicas Universidade Estadual de Campinas (FCM Unicamp) Campinas, SP, Brazil
| | - Irene Lorand-Metze
- Hemocentro da Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil; Faculdade de Ciências Médicas Universidade Estadual de Campinas (FCM Unicamp) Campinas, SP, Brazil.
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Murbach B, Duarte G, Palma LC, Miranda E, Duffles G, Furlin GP, Toni I, De Souza C, Binelli L, Bassan VL, de Castro FA, de Figueiredo-Pontes LL, Pagnano KBB. Kinetics of BCR::ABL1 transcript levels and molecular relapse after tyrosine kinase inhibitors discontinuation in chronic myeloid leukemia patients: preliminary results from the DES-CML study. Front Oncol 2024; 14:1393191. [PMID: 38779092 PMCID: PMC11109364 DOI: 10.3389/fonc.2024.1393191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024] Open
Abstract
Tyrosine kinase inhibitors (TKI) have revolutionized the treatment of patients with chronic myeloid leukemia. Patients who achieve sustained deep molecular response are eligible for treatment discontinuation. DES-CML is an ongoing, phase 2 multicentric discontinuation trial. Adult patients with CML in chronic phase with typical BCR::ABL1 transcripts, stable deep molecular response (MR4.5 IS) for two years, and no previous resistance were eligible. Patients underwent a phase of TKI dose de-escalation for six months before discontinuation. TKI was reintroduced at the previous dose if the patient lost major molecular response (MMR) at any time. This study aimed to assess the impact of BCR-ABL transcript kinetics during TKI de-escalation and discontinuation phases on treatment-free survival. So far, the study recruited 41 patients, and 38 patients discontinued therapy (4 were in the second discontinuation attempt). Eleven patients lost MMR, one during the de-escalation phase and ten after discontinuation. 24-month treatment-free survival was 66% (95% CI: 48-84%) in a median follow-up of 7 (1-30) months. No patient lost hematological response or had disease progression. A higher rate of molecular relapses occurred in patients with fluctuating BCR::ABL1 levels after the discontinuation phase (with loss of MR4.5, but no loss of MMR) (P=0.04, HR-4.86 (1.03-22.9) but not confirmed in the multivariate analysis. The longer duration of TKI treatment (P=0.03, HR-1.02, 95%CI - 1.00-1.04) and MMR (P=0.004, HR-0.95, 95%CI - 0.92-098) were independent factors of a lower relapse rate.
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Affiliation(s)
- Bruna Murbach
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Gislaine Duarte
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Leonardo Carvalho Palma
- Hematology Division, Department of Medical Images, Hematology, and Clinical Oncology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Eliana Miranda
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Guilherme Duffles
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Graziele Pavan Furlin
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Isabella Toni
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Carmino De Souza
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Larissa Binelli
- Hematology Division, Department of Medical Images, Hematology, and Clinical Oncology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Vitor Leonardo Bassan
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Fabiola Attie de Castro
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Lorena Lobo de Figueiredo-Pontes
- Hematology Division, Department of Medical Images, Hematology, and Clinical Oncology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Katia Borgia Barbosa Pagnano
- Centro de Hematologia e Hemoterapia (Hemocentro-UNICAMP), Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
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SOHO State of the Art Updates and Next Questions | Update on Treatment-Free Remission in Chronic Myeloid Leukemia (CML). CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2023; 23:333-339. [PMID: 36934065 DOI: 10.1016/j.clml.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023]
Abstract
Tyrosine kinase inhibitor (TKI) discontinuation, also known as treatment-free remission (TFR) is currently one of the main goals of chronic myeloid leukemia (CML) therapy. TKI discontinuation should be considered in eligible patients for several reasons. Specifically, TKI therapy is associated with reduced quality of life, long-term side effects, and a heavy financial burden on both the patients and society. TKI discontinuation is a particularly important goal for younger patients diagnosed with CML because of the treatment's effects on their growth and development in addition to potential long-term side-effects. Numerous studies with thousands of patients have demonstrated the safety and feasibility of attempting TKI discontinuation in a select group of patients who have achieved a sustained deep molecular remission. With current TKIs, approximately 50% of patients will be eligible for attempting TFR of which only 50% will achieve a successful TFR. Therefore, in reality, only 20% of patients with newly diagnosed CML will achieve a successful TFR, and the majority of patients will need to continue TKI therapy indefinitely. However, several ongoing clinical trials are investigating treatment options for patients to achieve deeper remission with the ultimate goal of a cure, which is defined as being off drug with no evidence of disease.
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Chen Y, Zhao H, Guo J, Zou J, He W, Han D, Cheng F, Zhang Y, Li W. Successful treatment discontinuation in CML patients with full-dose and low-dose TKI: Results from real-world practice. Front Pharmacol 2023; 14:1101743. [PMID: 36755944 PMCID: PMC9899816 DOI: 10.3389/fphar.2023.1101743] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
Background: In clinical studies, some patients who achieve deep molecular response (DMR) can successfully discontinue tyrosine kinase inhibitor (TKI). TKI dose reduction is also an important aspect of alleviating adverse effects and improving quality of life. This study aimed to explore the outcome after drug withdrawal in Chinese CML patients. Methods: We conducted a retrospective analysis of the outcome of 190 patients who stopped TKI. 27 patients experienced dose reduction before TKI discontinuation. The median duration of TKI treatment and MR4 before discontinuation was 82 months and 61 months. Results: With median follow-up after stopping TKI treatment of 17 months, the estimated TFR (Treatment Free Remission) were 76.9% (95%CI, 70.2%-82.4%), 68.8% (95%CI, 61.3%-75.2%), and 65.5% (95%CI, 57.4%-72.5%) at 6, 12 and 24 months. For full-dose and low-dose TKI groups, the TFR at 24 months was 66.7% and 55.8% (p = 0.320, log-rank). Most patients (56/57) quickly achieved MMR after restarting TKI treatment. Multivariable analysis showed that patients with TKI resistance had a higher risk of molecular relapse than patients without TKI resistance (p < 0.001). Conclusion: TFR rates were not impaired in patients experiencing dose reduction before TKI discontinuation compared to patients with full-dose TKI. Our data on Chinese population may provide a basis for the safety and feasibility of TKI discontinuation, including discontinuation after dose reduction, in clinical practice.
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Affiliation(s)
- Yilin Chen
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Huifang Zhao
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jingming Guo
- Department of Hematology, Yichang Central People’s Hospital & First Clinical Medical College of China Three Gorges University, Yichang, Hubei, China
| | - Jing Zou
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wenjuan He
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Danlei Han
- Department of Hematology, Yichang Central People’s Hospital & First Clinical Medical College of China Three Gorges University, Yichang, Hubei, China
| | - Fanjun Cheng
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China,*Correspondence: Yanli Zhang, ; Weiming Li, ; Fanjun Cheng,
| | - Yanli Zhang
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China,*Correspondence: Yanli Zhang, ; Weiming Li, ; Fanjun Cheng,
| | - Weiming Li
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China,*Correspondence: Yanli Zhang, ; Weiming Li, ; Fanjun Cheng,
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