November 17, 2012

$PVCT.OB: PV-10 -- A Vaccine, or Vaccine-like

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The abstract and poster from Craig et al.'s participation at the Society for Immunotherapy of Cancer (SITC) 27th Annual Meeting has begun the elaboration of the anti-tumor immune response to PV-10 immuno-chemoablation. This publicly builds upon Moffitt's description of PV-10's immunologic mechanism of action, presented at the 2012 Society of Surgical Oncology Annual Meeting, that confirmed PV-10 chemoablation of melanoma lesions leads to a systemic response and the induction of systemic anti-tumor immunity.

In the SITC abstract (above) Craig et al. hypothesized production of a vaccine- like immune response using a small molecule drug was possible and required:
  • An intralesional route of injection that generates rapid, durable tumor destruction via autolysis;
  • Rapid clearance of drug from normal tissue; and
  • Anti-tumor effects targeted only to tumor tissue.
According to Provectus, PV-10 appeared to meet each of these requirements.

"Treating cancer has historically relied on a trifecta of treatments—surgery, chemotherapy, and radiation—known colloquially as “slash, poison, and burn.” Vaccines have a potential advantage over these three options in that the body’s response is longer lasting (on a scale of years as opposed to weeks or months), which could possibly eradicate the micro-metastases that often linger after standard treatments end. Moreover, cancer vaccines have similar minor side effects to traditional vaccines: inflammation at the injection site and flu-like symptoms." Read more here.

"Cancer vaccines are designed to boost the body’s natural ability to protect itself, through the immune system, from dangers posed by damaged or abnormal cells such as cancer cells. The FDA has approved two types of vaccines to prevent cancer (Gardasil® and Cervarix®): vaccines against the hepatitis B virus, which can cause liver cancer, and vaccines against human papillomavirus types 16 and 18, which are responsible for about 70 percent of cervical cancer cases. The FDA has approved one cancer treatment vaccine for certain men with metastatic prostate cancer (Provenge®)." Read more here.
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The great anticipation of Moffitt's next presentation(s), purportedly at the AACR Annual Meeting 2013 that will be held April 6-10 in Washington, DC (according to sources external to Provectus), derives from the release of more results and conclusory statements regarding the production of a vaccine-like immune response from PV-10 immuno-chemoablation, and both the preventative and therapeutic vaccine or vaccine-like benefit of the drug.

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