April 23, 2015

Positive preclinical antiviral and safety profile of MIV-802 supports continued development


Stockholm, Sweden — Medivir AB (Nasdaq Stockholm: MVIR) today announce that the preclinical antiviral and safety profile of MIV-802, Medivir’s wholly-owned nucleotide polymerase inhibitor under development for the treatment of hepatitis C virus (HCV) infection, was presented at The International Liver Congress™ 2015 of the European Association for the Study of the Liver (EASL), taking place in Vienna from April 22-26.

The presentation, entitled “Preclinical characterization of MIV-802, a novel uridine nucleotide HCV NS5B polymerase inhibitor, for treatment of hepatitis C virus infection” (Abstract P0688), outlines the favourable preclinical profile of MIV-802. This includes selective inhibition of the HCV NS5B polymerase by the active metabolite of MIV-802 when compared with several human DNA and RNA polymerases, the potent and selective pan-genotypic inhibition of HCV RNA replication by MIV-802 in vitro, and its low toxicity in a range of in vitro and in vivo studies. The presentation also describes preclinical studies that show the selective delivery of high levels of the active metabolite of MIV-802 to the liver. The data therefore support the continuing development of MIV-802 for the future treatment of HCV infection in combination with other Direct Acting Antivirals (DAAs).

Full session details and data presentation on www.medivir.com and listings for The International Liver Congress™ 2015 can be found at http://www.ilc-congress.eu.

For further information, please contact:
Ola Burmark, CFO Medivir AB, mobile: +46 (0)725-480 580.
Richard Bethell, EVP Research and Discovery, mobile: +46 (0)72-704 32 11

Medivir is required under the Securities Markets Act to make the information in this press release public.
The information was submitted for publication at 14.00 CET on 23 April 2015.

About MIV-802
MIV-802 is a highly potent, pangenotypic nucleotide-based inhibitor of the HCV NS5B polymerase, which recently entered preclinical development. Hepatitis C treatment comprises a combination of several pharmaceuticals with different mechanisms. Nucleotides are regarded as the most important component of any such combination, due to their potent and broad spectrum antiviral effect on multiple HCV genotypes and high barriers to the emergence of resistance. Preclinical data indicate that MIV-802 can be used effectively in combination with other classes of antiviral agents for the treatment of HCV, including protease inhibitors and NS5A inhibitors.

About Medivir
Medivir is a research based pharmaceutical company with a research focus on infectious diseases and oncology. We have a leading competence within protease inhibitor design and nucleotide/nucleoside science and we are dedicated to develop innovative pharmaceuticals that meet great unmet medical need. Our commercial organization provides a growing portfolio of specialty care pharmaceuticals on the Nordic market. Medivir is listed on the Nasdaq Stockholm Mid Cap List.


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