Ipsen (Euronext: IPN; ADR: IPSEY) today announced that the European Medicines Agency (EMA), the European regulatory authority, has validated the application for variation to the Cabometyx® (cabozantinib) marketing authorization for the addition of a new indication in first-line treatment of advanced renal cell carcinoma.
The filing is based on the results of CABOSUN, a phase II trial demonstrating that Cabometyx® prolongs progression free survival (PFS) in treatment-naive patients with intermediate- or poor-risk aRCC compared to sunitinib, the standard of care for more than 10 years. If approved, Cabometyx® would be the first and only single-agent treatment to demonstrate superior clinical efficacy over the standard of care in both first line (vs. sunitinib) and second line (vs. everolimus) aRCC.
Alexandre Lebeaut, MD, Executive Vice-President, R&D, Chief Scientific Officer, Ipsen, said: “The filing is based on the results of CABOSUN, a phase II trial demonstrating that Cabometyx® prolongs progression free survival (PFS) in a statistically and clinically meaningful way in treatment-naive patients with intermediate- or poor-risk advanced RCC compared to sunitinib, the standard of care for more than 10 years. Ipsen’s commitment to oncology and developing innovative therapies for cancer patients is stronger than ever. We continue to be excited about our partnership with Exelixis to investigate new indications for cabozantinib.”
In September 2016, Cabometyx® was approved in the EU for the treatment of aRCC in adults following prior vascular endothelial growth factor (VEGF)-targeted therapy. As of today, Cabometyx® is commercially available for the treatment of eligible patients with advanced RCC in Austria, Denmark, Germany, Luxembourg, Norway, The Netherlands, Spain and UK.
About advanced Renal Cell Carcinoma
With the incidence predicted to rise 22% by 2020, renal cell carcinoma (RCC) threatens to become one of the fastest growing cancers in the world.[i] Targeted therapies including tyrosine kinase inhibitors (TKIs) of the VEGF receptor (VEGFR) introduced a decade ago, significantly transformed the treatment landscape of aRCC.[ii]
The American Cancer Society’s 2017 statistics cite kidney cancer as one of the top ten most commonly diagnosed forms of cancer among both men and women in the U.S.[iii] Clear cell RCC is the most common type of kidney cancer in adults.[iv] If detected in its early stages, the five-year survival rate for RCC is high. For patients with advanced- or late-stage metastatic RCC, however, the five-year survival rate is only 12% with no identified cure for the disease.[v] Approximately 30,000 patients in the U.S. and 68,000 globally require treatment.[vi]
The majority of clear cell RCC tumors have lower than normal levels of a protein called von Hippel-Lindau, which leads to higher levels of MET, AXL, and VEGF.[vii]–[viii] These proteins promote tumor angiogenesis (blood vessel growth), growth, invasiveness, and metastasis.[ix], [x], [xi], [xii] MET and AXL may provide escape pathways that drive resistance to VEGF receptor inhibitors. xii – xv
About Cabometyx® (cabozantinib)
Cabometyx® is the tablet formulation of cabozantinib. Its targets include MET, AXL, and VEGFR receptors in tumor cells. In preclinical models, cabozantinib has been shown to inhibit the activity of these receptors, which are involved in normal cellular function and pathologic processes such as tumor angiogenesis, invasiveness, metastasis, and drug resistance. Cabometyx® is available in 20 mg, 40 mg, or 60 mg doses. The recommended dose is 60 mg orally, once daily.
On April 25, 2016, the FDA approved Cabometyx® tablets for the treatment of patients with aRCC who have received prior anti-angiogenic therapy. On August 16, 2017, Ipsen’s partner Exelixis has submitted a U.S. supplemental new drug application for cabometyx® (cabozantinib) for the treatment of previously untreated advanced kidney cancer. On September 9, 2016, the European Commission approved Cabometyx® tablets for the treatment of aRCC in adults who have received prior vascular endothelial growth factor (VEGF)-targeted therapy in the European Union, Norway, and Iceland. On September 8, 2017, the EMA validated the application for Cabometyx® for the treatment in first line aRCC.
About the CABOSUN study
On May 23, 2016, Exelixis announced that CABOSUN met its primary endpoint, demonstrating a statistically significant and clinically meaningful improvement in PFS compared with sunitinib in patients with intermediate- or poor-risk aRCC per IMDC (International Metastatic RCC Carcinoma Database Consortium) criteria as determined by investigator assessment. CABOSUN was conducted by The Alliance for Clinical Trials in Oncology as part of Exelixis’ collaboration with the NCI-CTEP. These results were first presented by Dr. Toni Choueiri at the meeting of the European Society for Medical Oncology (ESMO) 2016, and published in the Journal of Clinical Oncology (Choueiri, JCO, 2017).[xiii]
On June 19th 2017 Exelixis announced that the analysis of the review by a blinded independent radiology review committee (IRC) has confirmed the primary efficacy endpoint results of investigator-assessed progression-free survival (PFS) from the CABOSUN randomized phase 2 trial of cabozantinib as compared with sunitinib in patients with previously untreated advanced renal cell carcinoma (RCC) with intermediate- or poor-risk disease per the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) criteria. Per the IRC analysis, cabozantinib demonstrated a clinically meaningful and statistically significant reduction in the rate of disease progression or death as measured by PFS. The incidence of adverse events (any grade) and the incidence of grade 3 or 4 adverse events between cabozantinib and sunitinib were comparable.
CABOSUN is a randomized, open-label, active-controlled phase II trial that enrolled 157 patients with aRCC determined to be intermediate- or poor-risk per IMDC criteria. Patients were randomized 1:1 to receive cabozantinib (60 mg once daily) or sunitinib (50 mg once daily, four weeks on followed by two weeks off). The primary endpoint was PFS. Secondary endpoints included overall survival and objective response rate. Eligible patients were required to have locally advanced or metastatic clear-cell RCC, ECOG performance status 0-2, and had to be intermediate- or poor-risk per IMDC criteria (Heng, JCO, 2009).[xiv] Prior systemic treatment for RCC was not permitted.
[i] Ferlay J, Soerjomataram I, Dikshit R, et al: Cancer incidence and mortality worldwide: sources, methods and major patterns in GLOBOCAN 2012. Int J Cancer 136:E359-86, 2015
[ii] Jacobsen J, Grankvist K, Rasmuson T, et al. Expression of vascular endothelial growth factor protein in human renal cell carcinoma. BJU Int. 2004;93:297–302.
[iii] American Cancer Society. Cancer Facts & Figures 2017. Atlanta: American Cancer Society; 2017.
[iv] Jonasch E., Gao J., Rathmell W.K., Renal cell carcinoma. BMJ. 2014; 349:g4797.
[v] Ko, J. J., Choueiri, T.K., et al. First-, second- third-line therapy for mRCC: benchmarks for trial design from the IMDC. British Journal of Cancer. 2014; 110: 1917-1922.
[vi] Decision Resources Report: Renal Cell Carcinoma. October 2014 (internal data on file).
[vii] Harshman, L.C. and Choueiri, T.K., Targeting the hepatocyte growth factor/c-Met signaling pathway in renal cell carcinoma. Cancer J. 2013; 19(4):316-23.
[viii] Rankin et al., Direct regulation of GAS6/AXL signaling by HIF promotes renal metastasis through SRC and MET. Proc Natl Acad Sci U S A. 2014; 111(37):13373-8.
[ix] Zhou L, Liu X-D, Sun M, et al. Targeting MET and AXL overcomes resistance to sunitinib therapy in renal cell carcinoma. Oncogene. 2016;35(21):2687–2697.
[x] Koochekpour et al.,The von Hippel-Lindau tumor suppressor gene inhibits hepatocyte growth factor/scatter factor-induced invasion and branching morphogenesis in renal carcinoma cells. Mol Cell Biol. 1999; 19(9):5902–5912.
[xi] Takahashi A, Sasaki H, Kim SJ, et al. Markedly increased amounts of messenger RNAs for vascular endothelial growth factor and placenta growth factor in renal cell carcinoma associated with angiogenesis. Cancer Res.1994;54:4233-4237.
[xii] Nakagawa M, Emoto A, Hanada T, Nasu N, Nomura Y. Tubulogenesis by microvascular endothelial cells is mediated by vascular endothelial growth factor (VEGF) in renal cell carcinoma. Br J Urol. 1997;79:681-687
[xiii] Choueiri, T.K., et al. Cabozantinib Versus Sunitinib As Initial Targeted Therapy for Patients With Metastatic Renal Cell Carcinoma of Poor or Intermediate Risk: The Alliance A031203 CABOSUN Trial. Journal of Clinical Oncology. 2017; 35:6, 591-597.
[xiv] Heng D.Y., Xie W., Regan M.M., et al. Prognostic factors for overall survival in patients with metastatic renal cell carcinoma treated with vascular endothelial growth factor-targeted agents: Results from a large, multicenter study. Journal of Clinical Oncology. 2009; 27:5794-5799.