On September 19, 2018 Tocagen Inc. (Nasdaq: TOCA), a clinical-stage, cancer-selective gene therapy company, reported that it has completed the planned enrollment of 380 patients in the global Toca 5 pivotal Phase 3 trial approximately three months ahead of schedule (Press release, Tocagen, SEP 19, 2018, View Source;p=RssLanding&cat=news&id=2368044 [SID1234529590]). Toca 5 is a randomized, multi-center study evaluating the safety and efficacy of Toca 511 & Toca FC compared to standard of care in patients undergoing resection for recurrent high grade glioma (HGG). The principal investigator is Timothy Cloughesy, M.D., director of the University of California, Los Angeles Neuro-Oncology Program.
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"Achieving our enrollment goal ahead of schedule is a testament to the enthusiasm and dedication of our investigators and study coordinators as well as the participating patients, families and patient advocates," said Asha Das, M.D., senior vice president and chief medical officer of Tocagen. "Achieving this enrollment goal takes us one step closer towards a potentially transformative new treatment option for patients with brain cancer."
"Completing enrollment in Toca 5 is the latest example of our recent progress as we continue to execute against our goals," said Marty Duvall, chief executive officer of Tocagen. "This important milestone also triggers the next milestone payment of $2 million from ApolloBio, our licensor of Toca 511 & Toca FC within the greater China region."
On August 23rd, Tocagen announced the Toca 5 study would continue without modification after an Independent Data Monitoring Committee completed the first interim analysis. Tocagen estimates the second interim analysis in the first half of 2019 and the final planned safety and efficacy analyses by the end of 2019. More information about Toca 5 can be found on ClinicalTrials.gov using the clinical trial identifier NCT02414165.
About High Grade Glioblastoma
Recurrent HGG is among the most common and aggressive primary brain cancers and often strikes in the prime of life. The two most common forms of HGGs are glioblastoma and anaplastic astrocytoma. The total number of new diagnoses of HGG expected in 2018 is about 188,000 worldwide. Unfortunately, HGG recurs in most patients after frontline treatment, and standard of care treatment typically offers a median survival of only seven to nine months.
About Toca 511 & Toca FC
Tocagen’s lead product candidate is a two-part cancer-selective immunotherapy comprised of an investigational biologic, Toca 511 and an investigational small molecule, Toca FC. Toca 511 (vocimagene amiretrorepvec) is a retroviral replicating vector (RRV) that selectively infects cancer cells and delivers a gene for the enzyme, cytosine deaminase (CD). Through this targeted delivery, infected cancer cells carry the CD gene and produce CD. Toca FC is an orally administered, extended-release formulation of the prodrug, 5-fluorocytosine (5-FC), which is converted into an anti-cancer drug, 5-fluorouracil (5-FU), when it encounters CD. 5-FU kills cancer cells and immune-suppressive myeloid cells in the tumor microenvironment resulting in anti-cancer immune activation and subsequent tumor killing.