FREMONT, Calif., May 14 /PRNewswire/ -- Quark Pharmaceuticals, Inc., a development-stage pharmaceutical company discovering and developing novel RNA interference (RNAi)-based therapeutics, today announced that Elena Feinstein, M.D., Ph.D., Chief Scientific Officer, presented a study titled, "siRNA Therapeutics for Prevention of Ocular and Inner Ear Sensory Cells Death," at the DxRx Summit: Nucleic Acid Diagnostics & Therapeutics. The event was held May 12-13, 2009 in Boston, MA.
Dr. Feinstein presented data demonstrating that synthetic, chemically-modified 19-bp siRNAs, including PF 04523655 currently being studied by partners Pfizer and Quark in patients with diabetic macular edema (DME) and age-related macular degeneration (AMD), enter cells in the retina of the eye and exert their therapeutic effects while avoiding non-specific activation of the toll-like receptor 3 (TLR3) - the effect reported for other synthetic siRNAs. Similar data for QPI-1007, Quark's proprietary siRNA composition, were also reported. QPI-1007 was demonstrated to confer effective ocular neuroprotection and is currently in late-stage IND-enabling studies.
In addition to studies in the eye, Dr. Feinstein also reported results demonstrating effective delivery of synthetic siRNAs to the inner ear, which resulted in protection of hearing epithelium from ototoxic and noise-induced damage. These studies were performed in collaboration with Prof. Jayakrishna Ambati,
Daniel Zurr, Ph.D., President and Chief Executive Officer, said, "Results from the studies presented at DxRx demonstrate our successful track record in discovering and advancing industry-leading siRNA product candidates. Our strong position
|SOURCE Quark Pharmaceuticals, Inc.|
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