[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.

Acta Medica Portuguesa
|September 11, 2013
PubMed

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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