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Chronic Myeloproliferative Neoplasias

Nilotinib in imatinib-resistant or imatinib-intolerant patients with chronic myeloid leukemia in chronic phase: 48-month follow-up results of a phase II study

Abstract

Nilotinib (Tasigna) is a BCR–ABL1 tyrosine kinase inhibitor approved for the treatment of patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase (CML-CP) who are newly diagnosed or intolerant of or resistant to imatinib. The 48-month follow-up data for patients with CML-CP treated with nilotinib after imatinib resistance or intolerance on an international phase II study were analyzed. Overall, 59% of patients achieved major cytogenetic response; 45% achieved complete cytogenetic response while on study. The estimated rate of overall survival (OS) and progression-free survival (PFS) at 48 months was 78% and 57%, respectively. Deeper levels of molecular responses at 3 and 6 months were highly positively correlated with long-term outcomes, including PFS and OS at 48 months. Of the 321 patients initially enrolled in the study, 98 (31%) were treated for at least 48 months. Discontinuations were primarily due to disease progression (30%) or adverse events (21%). Nilotinib is safe and effective for long-term use in responding patients with CML-CP who are intolerant of or resistant to imatinib. Further significant improvements in therapy are required for patients who are resistant or intolerant to imatinib.

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Acknowledgements

We thank Susan Branford, Philipp Erben, Neil Gallagher, Ariful Haque, Martin Müller and Simona Soverini for their contributions. Financial support for medical editorial assistance was provided by Novartis Pharmaceuticals. We thank Cornel Phillip and Erinn Goldman for medical editorial assistance with this manuscript. The research work of Francis Giles, Philipp D le Coutre, Javier Pinilla-Ibarz, Richard A Larson, Norbert Gattermann, Oliver G Ottmann, Andreas Hochhaus, Jerald P Radich, Giuseppe Saglio, Timothy P Hughes, Giovanni Martinelli, Dong-Wook Kim, Jorge Cortes, Michele Baccarani and Hagop M Kantarjian was funded by Novartis Pharma.

Author Contributions

Conception and design: Francis Giles, Philipp D le Coutre, Javier Pinilla-Ibarz, Richard A Larson, Norbert Gattermann, Oliver G Ottmann, Andreas Hochhaus, Jerald P Radich, Giuseppe Saglio, Timothy P Hughes, Giovanni Martinelli, Dong-Wook Kim, Jorge Cortes, Michele Baccarani and Hagop M Kantarjian. Collection and assembly of data: all authors. Manuscript writing: all authors. Final approval of manuscript: all authors. Provision of study materials or patients: Francis Giles, Philipp D le Coutre, Javier Pinilla-Ibarz, Richard A Larson, Norbert Gattermann, Oliver G Ottmann, Andreas Hochhaus, Jerald P Radich, Giuseppe Saglio, Timothy P Hughes, Giovanni Martinelli, Dong-Wook Kim, Jorge Cortes, Michele Baccarani and Hagop M Kantarjian.

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Correspondence to F J Giles.

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Steven Novick, Kathryn Gillis and Xiaolin Fan are either employed or hold a leadership position in Novartis Pharma. The remaining authors declare no conflict of interest.

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Giles, F., le Coutre, P., Pinilla-Ibarz, J. et al. Nilotinib in imatinib-resistant or imatinib-intolerant patients with chronic myeloid leukemia in chronic phase: 48-month follow-up results of a phase II study. Leukemia 27, 107–112 (2013). https://doi.org/10.1038/leu.2012.181

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