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Updated: May 8, 2026

A Method for Screening and Validation of Resistant Mutations Against Kinase Inhibitors
Published on: December 7, 2014
[Mechanisms of resistance to BCR-ABL kinase inhibitors]
Joana Diamond1, Maria Gomes da Silva
1Laboratório de Hemato-Oncologia. Unidade de Biologia Molecular. Instituto Português de Oncologia Francisco Gentil. Lisboa. Portugal.. jdiamond@ipolisboa.min-saude.pt.
Abstract:
Since the introduction of imatinib mesylate for the treatment of chronic myeloid leukaemia, impressive clinical responses were observed in the majority of patients in chronic phase. However, not all patients experience an optimal response to imatinib mesylate or even to the more potent, second generation tyrosine kinase inhibitors. Furthermore, responses are not sustained in a number of patients, and it is yet unclear whether the inhibitors can be safely discontinued in patients who achieve long-term remission. The emergence of resistance to second generation tyrosine kinase inhibitors has become a significant problem that led to extensive studies on the causal mechanisms. This review will describe our current state of knowledge on why and how chronic myeloid leukaemia cells can develop resistance to second generation tyrosine kinase inhibitors.
Insights
Second-generation tyrosine kinase inhibitors (TKIs) are effective for chronic myeloid leukaemia, but resistance remains a challenge. This review explores the mechanisms behind TKI resistance in chronic myeloid leukaemia.
Area of Science:
- Hematology
- Oncology
- Molecular Biology
Context:
- Imatinib mesylate revolutionized chronic myeloid leukaemia (CML) treatment, achieving high response rates in chronic phase.
- Despite initial success, not all patients achieve optimal responses or sustained remission with imatinib or newer generation TKIs.
- The long-term safety of discontinuing TKIs in patients with deep remission is still under investigation.
Purpose:
- To review the current understanding of resistance mechanisms to second-generation tyrosine kinase inhibitors in chronic myeloid leukaemia.
- To elucidate the molecular pathways and cellular processes that lead to treatment failure.
Summary:
- While first- and second-generation tyrosine kinase inhibitors (TKIs) have transformed chronic myeloid leukaemia (CML) therapy, acquired resistance remains a significant clinical hurdle.
- This review details the known mechanisms by which CML cells develop resistance to potent second-generation TKIs.
- Understanding these resistance pathways is crucial for developing strategies to overcome treatment failure.
Impact:
- Provides a comprehensive overview of TKI resistance in CML for researchers and clinicians.
- Highlights the need for further investigation into overcoming resistance to improve long-term CML management.
- Informs the development of novel therapeutic strategies for patients resistant to current TKI treatments.
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