Medigene AG

Medigene presents data on the successful production of AML DC vaccines at AACR conference

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Planegg (pta007/19.04.2018/07:30) - Medigene AG (FSE: MDG1, Prime Standard, TecDAX) announced that researchers from Medigene and Oslo University Hospital presented a poster on the generation of dendritic cell vaccines for Medigene's ongoing Phase I/II clinical trial with Acute Myeloid Leukemia (AML) patients at the American Association for Cancer Research (AACR) Annual Meeting in Chicago, USA.

Dr. Kai Pinkernell, Chief Medical and Chief Development Officer (CMO/CDO) of Medigene, commented: "These results clearly demonstrate the feasibility and robustness of our production protocol for high numbers of clinical grade TLR7/8-polarized fast mature DCs from heavily pretreated AML patients, allowing for long-term vaccination of trial subjects."

A total of 20 patients with an average age of 59 years (range 24 - 73 years) were recruited to this ongoing trial. For vaccine production, autologous apheresis material was collected from each patient. Following isolation of DC precursor cells, fast DC generation was performed using Medigene's proprietary TLR7/8-agonist containing maturation cocktail. The final DC vaccine product was cryopreserved in multiple aliquots prepared to deliver 5-10 million cells per vaccine dose.

Successful production runs of dendritic cells for vaccination were achieved for all 20 AML patients. An additional apheresis for a second production run in order to generate sufficient vaccine doses for the intended treatment period was performed during the trial for only 4 out of the 20 patients enrolled in the trial.

The production runs were performed at the Department of Cellular Therapy at the Oslo University Hospital, Norway.
To view the abstract of the poster entitled "Generation of clinical grade autologous TLR7/8-polarized fast dendritic cell vaccines for active immunotherapy of patients with AML" please visit: http://tiny.cc/12mtry

About Medigene's DC vaccines: The platform for the development of antigen-tailored DC vaccines is the most advanced of Medigene's highly innovative and complementary immunotherapy platforms. Currently Medigene evaluates its DC vaccines in a company-sponsored Phase I/II clinical trial in acute myeloid leukaemia (AML).

Dendritic cells (DCs) are the most potent antigen-presenting cells of our immune system. Their task is to take up, process and present antigens on their cell surface, which enables them to activate antigen-specific T cells for maturation and proliferation. This way T cells can recognize and eliminate antigen-bearing tumor cells. Dendritic cells can also induce natural killer cells (NK cells) to attack tumor cells. The team of Medigene Immunotherapies scientists has developed new, fast and effective methods for generating dendritic cells ex-vivo, which are able to activate both T cells and NK cells. The DC vaccines are developed from autologous (patient-derived) precursor cells, isolated from the patient's blood, and can be loaded with tumor-specific antigens to treat different types of cancer. Medigene's DC vaccines are in development for the treatment of minimal residual disease or for use in combination therapies.