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Haematological cancer

Idelalisib—targeting PI3Kδ in patients with B-cell malignancies

Idelalisib, the first PI3Kδ inhibitor in clinical use, has excellent activity in patients with chronic lymphocytic leukaemia and indolent B-cell lymphomas, heralding a new era of targeted therapy for these types of cancer. Idelalisib intercepts critical communications between B cells and the microenvironment, including B-cell receptor signalling and chemokine networks.

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Figure 1: Effects of idelalisib on crosstalk between malignant B cells and the microenvironment.

References

  1. Friedberg, J. W. et al. Inhibition of Syk with fostamatinib disodium has significant clinical activity in non-Hodgkin lymphoma and chronic lymphocytic leukemia. Blood 115, 2578–2585 (2010).

    Article  CAS  Google Scholar 

  2. Byrd, J. C. et al. Targeting BTK with ibrutinib in relapsed chronic lymphocytic leukemia. N. Engl. J. Med. 369, 32–42 (2013).

    Article  CAS  Google Scholar 

  3. Gopal, A. K. et al. PI3Kdelta inhibition by idelalisib in patients with relapsed indolent lymphoma. N. Engl. J. Med. http://dx.doi.org/10.1056/NEJMoa1314583.

  4. Furman, R. R. et al. Idelalisib and rituximab in relapsed chronic lymphocytic leukemia. N. Engl. J. Med. http://dx.doi.org/10.1056/NEJMoa1315226.

  5. Okkenhaug, K. et al. Impaired B and T cell antigen receptor signaling in p110delta PI 3-kinase mutant mice. Science 297, 1031–1034 (2002).

    CAS  Google Scholar 

  6. Srinivasan, L. et al. PI3 kinase signals BCR-dependent mature B cell survival. Cell 139, 573–586 (2009).

    Article  CAS  Google Scholar 

  7. Fruman, D. A. & Rommel, C. PI3K and cancer: lessons, challenges and opportunities. Nat. Rev. Drug Discov. 13, 140–156 (2014).

    Article  CAS  Google Scholar 

  8. Burger, J. A. & Gribben, J. G. The microenvironment in chronic lymphocytic leukemia (CLL) and other B cell malignancies: insight into disease biology and new targeted therapies. Semin. Cancer Biol. 24, 71–81 (2014).

    Article  CAS  Google Scholar 

  9. Burger, J. A. & Chiorazzi, N. B cell receptor signaling in chronic lymphocytic leukemia. Trends Immunol. 34, 592–601 (2013).

    Article  CAS  Google Scholar 

  10. Hoellenriegel, J. et al. The phosphoinositide 3'-kinase delta inhibitor, CAL-101, inhibits B-cell receptor signaling and chemokine networks in chronic lymphocytic leukemia. Blood 118, 3603–3612 (2011).

    Article  CAS  Google Scholar 

Download references

Acknowledgements

The study was supported by a Cancer Prevention and Research Institute of Texas (CPRIT) grant (to J.A.B.), and a Leukemia & Lymphoma Society Scholar Award in Clinical Research (to J.A.B.).

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Correspondence to Jan A. Burger.

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J.A.B. received research funding from Gilead and Pharmacyclics. K.O. declares no competing interests.

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Burger, J., Okkenhaug, K. Idelalisib—targeting PI3Kδ in patients with B-cell malignancies. Nat Rev Clin Oncol 11, 184–186 (2014). https://doi.org/10.1038/nrclinonc.2014.42

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