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Regulus Therapeutics Appoints Kleanthis G. Xanthopoulos, Ph.D. as President and Chief Executive Officer
CAMBRIDGE, Mass. and CARLSBAD, Calif., December 3, 2007 – Regulus Therapeutics LLC, a joint venture between Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) and Isis Pharmaceuticals, Inc. (Nasdaq: ISIS) formed to discover, develop and commercialize microRNA therapeutics, announced today the appointment of Kleanthis G. Xanthopoulos, Ph.D., as President and Chief Executive Officer. Dr. Xanthopoulos is the co-founder and former President and Chief Executive Officer of Anadys Pharmaceuticals, Inc.
“Kleanthis has had a distinguished and broadly recognized career as a leader in the life sciences industry,” said John Maraganore, Ph.D., Chairman of Regulus, and President and Chief Executive Officer of Alnylam. “We expect his experience in building organizations from research to development stages will be instrumental as we build a leading company focused on advancing microRNA therapeutics.”
“We are delighted that Kleanthis has joined Regulus,” said Stanley Crooke, M.D., Ph.D., Chairman and Chief Executive Officer of Isis. “He has the right combination of entrepreneurial spirit and scientific knowledge balanced with business expertise, to advance the efforts already underway at Regulus.”
“MicroRNAs are an exciting new area of biology, and microRNA therapeutics represent a previously unexplored area of pharmaceuticals research that could lead to the emergence of novel high-impact drugs,” said Kleanthis G. Xanthopoulos, Ph.D., President and Chief Executive Officer of Regulus. “Indeed, due to their mechanism of action, we believe microRNA therapeutics could have important implications for the treatment of a broad range of diseases including cancer, viral infection, and metabolic disorders. I am very excited to be joining Regulus at this time, as Isis and Alnylam have established a solid foundation of scientific and intellectual property leadership comprising an estate of more than 500 patents and decades of RNA-based research and development on which to build this leading biopharmaceutical company.”
Before joining Regulus, Dr. Xanthopoulos was a managing director of Enterprise Partners Venture Capital. Prior to that, he was a co-founder and served as President and Chief Executive Officer and Director of Anadys Pharmaceuticals from its inception in May 2000 to November 2006. From 1997 to 2000 he held a variety of positions at Aurora Biosciences Corporation (now Vertex Pharmaceuticals Incorporated) including Vice President, Genomics & Molecular Biology. Dr. Xanthopoulos participated in The National Institutes of Health (NIH) Human Genome Project and was a Section Head of the National Human Genome Research Institute at NIH from 1995 to 1997. He was an Associate Professor of Molecular Biology at the Karolinska Nobel Medical Institute, Stockholm, Sweden from 1991 to 1995, and a Postdoctoral Research Fellow at The Rockefeller University from 1987 to 1990. An Onassis scholar, Dr. Xanthopoulos received his B.Sc. in Biology with honors from Aristotle University of Thessaloniki, Greece, and received both his M.Sc. in Microbiology and Ph.D. in Molecular Biology from the University of Stockholm, Sweden.
Dr. Xanthopoulos is a member of the board of directors of Anadys Pharmaceuticals, Odyssey Thera, Inc., and an executive board member of BIOCOM, Southern California’s life science industry association, where he chairs the Capital Formation Committee.
About microRNA (miRNA) RNAi can also be induced by microRNAs, or miRNAs, that occur naturally within all mammalian cells. The miRNA molecules are encoded by the cell’s own genes, giving rise to small RNA molecules that are similar in structure to siRNAs. There are believed to be over 250 confirmed miRNA genes in the human genome and there are many other predicted miRNAs. miRNAs are thought to work through RNAi to regulate the activity of an estimated one-third of genes in the genome. The inappropriate absence or presence of specific miRNA molecules in various cells has been shown to be associated with specific human diseases, including cancer and viral infections.
About Regulus Regulus Therapeutics LLC is a biopharmaceutical company formed to discover, develop and commercialize microRNA therapeutics. The company was created as a joint venture between Alnylam Pharmaceuticals, a leader in RNAi therapeutics, and Isis Pharmaceuticals, a leader in antisense technologies and therapeutics. Isis and Alnylam scientists and collaborators were the first to discover microRNA antagonist strategies that work in vivo in animal studies (Krutzfeldt et al. (2005) Nature 438, 685-689; Esau et al. (2006) Cell Metab., 3, 87-98). Isis and Alnylam have also created and consolidated key intellectual property believed by the companies to be required for development and commercialization of microRNA therapeutics. The company, founded in 2007, maintains facilities in Carlsbad, California. For more information, visit www.regulusrx.com.
About Alnylam Alnylam is a biopharmaceutical company developing novel therapeutics based on RNA interference, or RNAi. The company is applying its therapeutic expertise in RNAi to address significant medical needs, many of which cannot effectively be addressed with small molecules or antibodies, the current major classes of drugs. Alnylam is building a pipeline of RNAi therapeutics; its lead program is in Phase I human clinical trials for the treatment of respiratory syncytial virus (RSV) infection. RSV infects nearly every child at least once by the age of two and accounts for more than 100,000 hospitalizations annually in the U.S. pediatric population. RSV infection also poses a great risk to the elderly and other adults with compromised immune systems. The company’s leadership position in fundamental patents, technology, and know-how relating to RNAi has enabledit to form major alliances with leading companies including Merck, Medtronic, Novartis, and Biogen Idec. The company, founded in 2002, maintains global headquarters in Cambridge, Massachusetts, and has an additional operating unit in Kulmbach, Germany. For more information, visit www.alnylam.com.
About Isis Pharmaceuticals Isis is exploiting its expertise in RNA to discover and develop novel drugs for its product pipeline and for its partners. Isis has successfully commercialized the world's first antisense drug and has 15 drugs in development. Isis’ drug development programs are aimed at treating cardiovascular, metabolic and inflammatory diseases. Isis’ partners are focused in disease areas such as ocular, viral and neurodegenerative diseases, and cancer. Ibis Biosciences, Inc., Isis’ wholly owned subsidiary, is developing and commercializing the Ibis T5000 Biosensor System, a revolutionary system to identify infectious organisms. As an innovator in RNA-based drug discovery and development, Isis is the owner or exclusive licensee of approximately 1,500 issued patents worldwide. Additional information about Isis is available at www.isispharm.com.
Alnylam Forward-Looking Statements Various statements in this release concerning our future expectations, plans and prospects, including without limitation statements related to the potential for miR-181a and other microRNAs, constitute forward-looking statements for the purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors, including risks related to: Alnylam’s approach to discover and develop novel drugs, which is unproven and may never lead to marketable products; Alnylam’s ability to fund and the results of further pre-clinical and clinical trials; obtaining, maintaining and protecting intellectual property utilized by Alnylam’s products; Alnylam’s ability to enforce its patents against infringers and to defend its patent portfolio against challenges from third parties; Alnylam’s ability to obtain additional funding to support its business activities; Alnylam’s dependence on third parties for development, manufacture, marketing, sales, and distribution of products; the successful development of Alnylam’s product candidates, all of which are in early stages of development; obtaining regulatory approval for products; competition from others using technology similar to Alnylam’s and others developing products for similar uses; Alnylam’s dependence on collaborators; and its short operating history; as well as those risks more fully discussed in the “Risk Factors” section of Alnylam’s most recent report on Form 10-K on file with the Securities and Exchange Commission. In addition, any forward-looking statements represent Alnylam’s views only as of today and should not be relied upon as representing its views as of any subsequent date. Alnylam does not assume any obligation to update any forward-looking statements.
Isis Forward-Looking Statements This press release includes forward-looking statements regarding Isis Pharmaceuticals’ business, its intellectual property portfolio, and the therapeutic and commercial potential of molecules complementary to microRNAs. Any statement describing Isis’ goals, expectations, financial or other projections, intentions or beliefs is a forward-looking statement and should be considered an at-risk statement, including those statements that are described as Isis’ goals. Such statements are subject to certain risks and uncertainties, particularly those inherent in the process of discovering, developing and commercializing drugs that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such products. Isis’ forward-looking statements also involve assumptions that, if they never materialize or prove correct, could cause its results to differ materially from those expressed or implied by such forward-looking statements. Although Isis’ forward-looking statements reflect the good faith judgment of its management, these statements are based only on facts and factors currently known by Isis. As a result, you are cautioned not to rely on these forward-looking statements. These and other risks concerning Isis’ programs are described in additional detail in Isis’ annual report on Form 10-K for the year ended December 31, 2005, and its quarterly report on Form 10-Q for the quarter ended September 30, 2006, which are on file with the SEC. Copies of these and other documents are available from the Company.

