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February 12, 2013
07:13 EDTZIOPZiopharm trial reaches target number of progression-free survival events
ZIOPHARM Oncology announced that the Phase 3, PICASSO 3, trial of palifosfamide in first-line metastatic soft tissue sarcoma has reached its target number of progression-free survival events. PICASSO 3 is an international, randomized, double-blind, placebo-controlled trial whose primary endpoint is PFS. According to the protocol and statistical plan, reaching the target number of PFS events leads to completion of the blinded data collection process and then formal efficacy analysis by the Independent Data Monitoring Committee. The company will announce topline results from this trial during the last week of March, it said. The company said, "Reaching the target number of progression events for PICASSO 3 positions us one step closer to understanding palifosfamide's full potential for this significant unmet medical need. With a positive study outcome, palifosfamide has the potential to become the first new treatment option in nearly 30 years for patients with first-line metastatic soft tissue sarcoma."
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November 19, 2015
07:07 EDTZIOPZIOPHARM announces data highlighting Ad-RTS-hIL-12 activity in Glioma
ZIOPHARM Oncology announced that the company is presenting initial results from an ongoing Phase 1 dose-escalation study of Ad-RTS-hIL-12 + orally administered veledimex in recurrent or progressive glioblastoma or grade III malignant glioma. The presentation, titled "Intratumoral Regulated Expression of IL-12 as a Gene Therapy Approach to Treatment of Glioma," will be delivered at 5:15 pm CT, Saturday, November 21, 2015 at the 20th Annual Society for Neuro-Oncology, or SNO, Annual Scientific Meeting in San Antonio, Texas. Ad-RTS-hIL-12 + the oral activator veledimex is a novel viral gene therapy candidate for the controlled expression of IL-12, a critical protein for stimulating an anti-cancer T-cell immune response. The ongoing multi-center Phase 1 trial of Ad-RTS-hIL-12 + veledimex examines a gene therapy strategy for recurrent high grade gliomas, with the goal of generating a localized anti-tumor immune response. The primary objective of the study is to determine the safety and tolerability of a single intra-tumoral Ad-RTS-hIL-12 injection activated upon dosing with oral veledimex. Secondary objectives are to determine the Ad-RTS-hIL-12 + veledimex maximum tolerated dose, the immune responses elicited by Ad-RTS-hIL-12 + veledimex, and assessment of biologic response. The study is expected to enroll up to 72 subjects. Preclinically, the effects of Ad-RTS-mIL-12 + veledimex were studied in orthotopic glioma animal models, demonstrating veledimex crossed the blood-brain-barrier. In a standard orthotopic glioma mouse model that evaluated dexamethasone, bevacizumab, temozolamide and a PD-1 inhibitor, Ad-RTS-mIL-12 + veledimex demonstrated a dramatic dose-related increase in survival, without significant adverse events, that was superior to all other treatments. In the current, on-going Phase 1 study, five patients are available for initial assessment, two with recurrent grade III malignant glioma and three with grade IV. Results show IL-12 was detectable in peripheral blood along with downstream IFNg, indicating that veledimex crossed the blood brain barrier activating IL-12 expression from intra-tumorally administered Ad-RTS-hIL-12. Ad-RTS-hIL-12 + veledimex was well tolerated with minimal neurologic toxicity. The most common adverse events were headache, fever, hyponatremia and nausea/vomiting. Related serious adverse events were aseptic meningitis, neutropenia, thrombocytopenia, leukopenia, with all toxicity to date consistent with the "on-target" effects of immunotherapy.

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