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| | | ![]() AACR MEETING: O-Vax Ovarian Cancer Vaccine Causes Immune Response NEW ORLEANS, LA -- March 31, 1998 -- Results from immunological tests of Avax Technologies, Inc.’s experimental vaccine of haptenized autologous ovarian cancer cells, O-Vax(TM) show that the vaccine delivers a positive immune response. The results were presented by David Berd, MD, professor of medicine at Thomas Jefferson University's Kimmel Cancer Center, at the 1998 Annual Meeting of the American Association for Cancer Research in New Orleans, LA. Dr. Berd is the inventor of the company's in-licensed autologous cell vaccine technology and the chairman of Avax’s scientific advisory board. Dr. Berd's presentation reported on the results to date of the ongoing Phase I/II clinical trial for O-Vax which is being conducted at TJU. The paper discussed a treatment for Stage III ovarian cancer patients. After surgical debulking and six cycles of standard chemotherapy (taxol plus either cisplatin or carboplatin), these patients received six weekly doses of O-Vax. The patients were tested for delayed-type hypersensitivity, a measure of the activity of T lymphocytes, both before treatment and again two-and-a-half weeks after the last vaccine dose. The study showed that six of the seven vaccinated patients developed an immune response to their own ovarian cancer cells, as measured by DTH. The study also measured the patients' immune response to their own haptenized ovarian cancer cells. All developed a strong, positive immune response, as measured by DTH. Avax initiated trials for O-Vax following earlier results obtained from patients with Stage II melanoma who had been treated with M-Vax(TM), the company's initial AC Vaccine for the treatment of melanoma. As previously reported, M-Vax is believed by Avax to be the first therapeutic cancer vaccine to show a substantial increase in the survival rate for patients with Stage III melanoma. The results of the M-Vax trials to date have also shown that a positive DTH to unmodified tumour cells was predictive of overall survival of patients with Stage III melanoma.
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