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

Planegg (pta007/19.04.2018/07:30 UTC+2) 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.

About Medigene's DC vaccine clinical trial: Medigene's Phase I/II trial (NCT02405338) includes 20 AML patients who show complete remission after standard chemotherapy, but who are not eligible for stem cell transplantation that would reduce the risk of a relapse. All patients will be vaccinated with Medigene's DC vaccines for two years. The primary objective is to assess safety and feasibility of the active immunotherapy with Medigene's dendritic cells. Secondary objectives of the study are induction of immune responses, overall survival (OS), progression free survival (PFS), control of minimal residual disease (MRD) and time to progression (TTP).

About acute myeloid leukaemia (AML): Acute myeloid leukaemia is a malignant disease of the hematopoietic system, affecting mainly adults above 60 years of age. In Germany, about 3,600 incidences are registered annually.

AML is caused by uncontrolled growth of dysfunctional hematopoietic precursor cells in the bone marrow. These cells prevent the generation of normal blood cells, causing a drop in erythrocytes and platelets, for example. Typical symptoms of AML include anemia, fever, increased risk of infection, and blood coagulation disorder. AML progresses rapidly and may be fatal within a few weeks if untreated.

AML is treated initially with intensive chemotherapy. Another treatment option is allogeneic hematopoietic stem cell transplantation. Unfortunately, the majority of patients suffer a relapse. Only about 15 - 20% of the patients show long-term remission after conventional chemotherapy. Allogeneic hematopoietic stem cell transplantation is the only treatment option that offers a more positive prognosis.

Medigene AG (FSE: MDG1, ISIN DE000A1X3W00, Prime Standard, TecDAX) is a publicly listed biotechnology company headquartered in Martinsried near Munich, Germany. The company is developing highly innovative immunotherapies to target various forms and stages of cancer. Medigene concentrates on the development of personalized T cell-based therapies, with associated projects currently in pre-clinical and clinical development.

For more information, please visit http://medigene.com

This press release contains forward-looking statements representing the opinion of Medigene as of the date of this release. The actual results achieved by Medigene may differ significantly from the forward-looking statements made herein. Medigene is not bound to update any of these forward-looking statements. Medigene® is a registered trademark of Medigene AG. This trademark may be owned or licensed in select locations only.

Contact Medigene AG
Julia Hofmann, Dr. Robert Mayer
Tel.: +49 - 89 - 20 00 33 - 33 01,
email: investor@medigene.com

In case you no longer wish to receive any information about Medigene, please inform us by e-mail (investor@medigene.com). We will then delete your address from our distribution list.

(end)

Emitter:	Medigene AG Lochhamer Straße 11 82152 Planegg Germany
Contact Person:	Medigene PR/IR
Phone:	+49 89 2000 33 3301
E-Mail:	investor@medigene.com
Website:	www.medigene.de
ISIN(s):	DE000A1X3W00 (Share)
Stock Exchange(s):	Regulated Market in Frankfurt; Free Market in Berlin, Dusseldorf, Hamburg, Hannover, Munich, Stuttgart, Tradegate