On November 17, 2014 Deciphera Pharmaceuticals reported the presentation of preclinical data that demonstrated that altiratinib (DCC-2701) inhibited tumor growth and invasion in a bevacizumab resistant glioblastoma mouse model (Press release Deciphera Pharmaceuticals, NOV 17, 2014, View Source [SID:1234500972]). Altiratinib, a kinase inhibitor that targets multiple selected kinases MET, TIE2, VEGFR2 and TRK, is currently in Phase 1 clinical development for the treatment of invasive solid tumors and received Orphan Drug Status from the U.S. Food and Drug Administration for the treatment of glioblastoma. The data on altiratinib were presented at the 19th Annual Scientific Meeting and Education Day of The Society for Neuro-Oncology held November 13-16, 2014, in Miami.

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"Altiratinib is differentiated in its ability to inhibit MET and TRK kinases while also providing balanced inhibition of the tumor microenvironment within a single oral therapeutic," said Michael D. Taylor, PhD, Deciphera’s President and Chief Executive Officer. "This balanced inhibitory profile demonstrates the power of Deciphera’s switch pocket technology to design advanced kinase inhibitor therapies to simultaneously block multiple cancer signaling mechanisms in the tumor cell and the tumor microenvironment to prevent growth and spread of cancer."
"These data demonstrated that altiratinib inhibited tumor growth and invasion both in vitro and in vivo. Based on these results, we believe the combination of altiratinib and anti-VEGF therapy may provide a new strategy to overcome antiangiogenic therapy resistance and prolong overall survival in patients with glioblastoma," said John F. de Groot MD, Associate Professor, Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center and presenting author. "We look forward to further exploring the potential of altiratinib in refractory glioblastoma, an area of significant unmet medical need."

In an oral presentation titled, "The Novel c-MET inhibitor altiratinib (DCC-2701) inhibits tumor growth and invasion in a bevacizumab resistant glioblastoma mouse model," John F. de Groot, MD and colleagues from the Brain Tumor Center at MD Anderson Cancer Center described data that demonstrated altiratinib, either alone or in combination with anti-VEGF therapy (bevacizumab), inhibited tumor growth, epithelial-mesenchymal transition (EMT) progression and invasion both in vitro and in vivo, compared with anti-VEGF therapy alone:

• Altiratinib, alone or in combination with bevacizumab treatment, dramatically suppressed EMT and tumor invasion in vivo. This anti-invasive effect correlated with decreased N-cadherin and vimentin levels.

• In vivo, microvascular density associated with evasive revascularization induced by bevacizumab, was significantly inhibited in the groups treated with altiratinib and altiratinib plus bevacizumab, compared with control or the group treated with bevacizumab alone.

• Similarly, F4/80+ bone marrow derived macrophage cell infiltration was significantly suppressed in the groups treated with altiratinib and altiratinib plus bevacizumab, compared to control or the group treated with bevacizumab alone.