On May 23, 2024 Theriva Biologics (NYSE American: TOVX), a diversified clinical-stage company developing therapeutics designed to treat cancer and related diseases in areas of high unmet need, reported that the U.S. Food and Drug Administration (FDA) has granted Fast Track Designation (FTD) to lead clinical candidate VCN-01 in combination with gemcitabine and nab-paclitaxel to improve progression-free survival and overall survival in patients with metastatic pancreatic adenocarcinoma (Press release, Theriva Biologics, MAY 23, 2024, View Source [SID1234643625]). In VIRAGE, the ongoing multinational Phase 2b clinical study, intravenous VCN-01 is being evaluated in combination with standard-of-care (SoC) chemotherapy (gemcitabine/nab-paclitaxel) as a first line therapy for patients with pancreatic ductal adenocarcinoma (PDAC). Previously, the FDA granted orphan drug designation to VCN-01 for treatment of PDAC.
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"The FDA’s decision to grant FTD to VCN-01 highlights the urgent need for new treatment options for PDAC, which accounts for the 4th highest cause of cancer-associated deaths in the US and Europe," said Steven A. Shallcross, Chief Executive Officer of Theriva Biologics. "VIRAGE, our Phase 2b trial evaluating VCN-01 in metastatic PDAC continues to progress, with enrollment expected to complete in the third quarter of 2024. FTD is an important step that furthers our ability to expedite the review of, and build upon the compelling clinical data that underscores VCN-01’s multiple modes of action and therapeutic potential in combination with chemotherapy or immunotherapy. We will continue to deliver on our mission to advance new therapeutic options for these patients."
FTD is designed to help treatments reach patients faster by facilitating the development and expediting the review of therapies with potential to treat serious conditions and fill an unmet medical need. Benefits of FTD to programs include early and frequent interactions with the FDA during the clinical development process and, if relevant criteria are met, the FDA may also review portions of a marketing application before the sponsor submits the complete application.
About Pancreatic Ductal Adenocarcinoma
Cancer of the pancreas consists of two main histological types: cancer that arises from the ductal (exocrine) cells of the pancreas or, much less often, cancers may arise from the endocrine compartment of the pancreas. Pancreatic ductal adenocarcinoma ("PDAC") accounts for more than 90% of all pancreatic tumors. It can be located either in the head of the pancreas or in the bodytail. Pancreatic cancer usually metastasizes to the liver and peritoneum. Other less common metastatic sites are the lungs, brain, kidney and bone. In its early stages, pancreatic cancer does not typically result in any characteristic symptoms. In many instances, progressive abdominal pain is the first symptom. Therefore, in most cases, pancreatic cancer is diagnosed in its late stages (locally advanced non-metastatic or metastatic stage of the disease) when surgical resection and possibly curative treatment is not possible. It is generally assumed that only 10% of cases are resectable at presentation, whereas 30-40% of patients are diagnosed at local advanced/unresectable stage and 50-60% present with distant metastases.
About VCN-01
VCN-01 is a systemically administered oncolytic adenovirus designed to selectively and aggressively replicate within tumor cells and degrade the tumor stroma that serves as a significant physical and immunosuppressive barrier to cancer treatment. This unique mode-of-action enables VCN-01 to exert multiple antitumor effects by (i) selectively infecting and lysing tumor cells; (ii) enhancing the access and perfusion of co-administered chemotherapy products; and (iii) increasing tumor immunogenicity and exposing the tumor to the patient’s immune system and co-administered immunotherapy products. Systemic administration enables VCN-01 to exert its actions on both the primary tumor and metastases. VCN-01 has been administered to over 80 patients in Phase 1 and investigator-sponsored clinical trials of different cancers, including PDAC (in combination with chemotherapy), head and neck squamous cell carcinoma (with an immune checkpoint inhibitor), ovarian cancer (with CAR-T cell therapy), colorectal cancer, and retinoblastoma (by intravitreal injection). More information on these clinical trials is available at Clinicaltrials.gov.