Otonomy Presents AuriPro(TM) Phase 3 Results at American Society of Pediatric Otolaryngology Conference

SAN DIEGO, April 27, 2015 (GLOBE NEWSWIRE) -- Otonomy, Inc. (Nasdaq:OTIC), a clinical-stage biopharmaceutical company focused on the development and commercialization of innovative therapeutics for diseases and disorders of the inner and middle ear, today announced that results from two identical Phase 3 trials of AuriPro™ were presented at the annual American Society of Pediatric Otolaryngology (ASPO) meeting, held during the Combined Otolaryngology Spring Meetings in Boston. This data supports Otonomy's New Drug Application (NDA) that has been submitted to the U.S. Food and Drug Administration (FDA) for the approval of AuriPro as a treatment of middle ear effusion in pediatric patients undergoing tympanostomy tube placement (TTP) surgery.

Results of these prospective, randomized, double-blind, sham-controlled Phase 3 trials demonstrated that AuriPro achieved the primary efficacy endpoint, reduction in the incidence of treatment failures, with statistical significance (p<0.001) and that AuriPro was well tolerated. In these trials, AuriPro reduced the risk of treatment failure, as measured by the occurrence of post-operative otorrhea (drainage) or any use of rescue antibiotics, by an average of 49 percent in all randomized patients across the two trials, and the rate of post-operative otorrhea or use of rescue antibiotics for documented otorrhea or otitis media by an average of 62 percent in all randomized patients across the two trials (p≤ 0.004), in each case as compared to sham. The studies enrolled a combined total of 532 pediatric patients.

"These two AuriPro Phase 3 trials are the first large-scale, multi-center studies demonstrating the clinical importance of antibiotic administration to reduce the occurrence of post-operative complications such as otorrhea following ear tube placement surgery," said Eric Mair, M.D., of Charlotte Eye Ear Nose & Throat Associates. "These results also demonstrate that a single dose of AuriPro, administered by the ENT during the procedure, provides a full course of treatment and avoids the risk of compliance problems inherent to multi-dose, multi-day, off-label antibiotic ear drops given by the parent or caregiver."

The presentation titled "Results Of Two Phase 3 Clinical Trials To Assess The Safety And Efficacy Of Extended-Release Ciprofloxacin Gel For Intratympanic Administration In Children With Middle Ear Effusion Undergoing Tympanostomy Tube Placement" was delivered by Dr. Mair.

About AuriPro

AuriPro is a sustained-exposure formulation of the antibiotic ciprofloxacin in development for the treatment of middle ear effusion in pediatric patients undergoing tympanostomy tube placement (TTP) surgery. AuriPro has been formulated to provide sustained-exposure of ciprofloxacin so that a single administration provides a full course of treatment. There are approximately one million TTP surgeries performed each year in the United States, and antibiotic ear drops are used in nearly all cases. Despite their routine use, no antibiotic ear drop has received FDA approval for this indication. Moreover, current ear drop products require multi-dose, multi-day regimens for efficacy. Full compliance with these regimens can be challenging, and missed antibiotic doses can compromise efficacy and increase the potential for bacterial resistance.

Otonomy submitted a New Drug Application (NDA) for AuriPro for the treatment of middle ear effusion in pediatric patients undergoing TTP surgery to the FDA on February 25, 2015. If approved within the standard review period, Otonomy anticipates a commercial launch for AuriPro in the United States in the first quarter of 2016.

About Otonomy

Otonomy is a clinical-stage biopharmaceutical company focused on the development and commercialization of innovative therapeutics for diseases and disorders of the ear. Otonomy's proprietary technology provides sustained exposure of drugs to the middle and inner ear following a single intratympanic injection. Otonomy has three product candidates in development. AuriPro™ is an antibiotic that has completed Phase 3 clinical trials in pediatric patients with middle ear effusion at the time of tympanostomy tube placement surgery, and a New Drug Application for AuriPro in this indication has been submitted to the FDA. OTO-104 is a steroid that is in the first of two pivotal clinical studies for the treatment of patients with Ménière's disease. OTO-311 is an NMDA receptor antagonist in development as a treatment for tinnitus. For additional information please visit www.otonomy.com.

Cautionary Note Regarding Forward Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or Otonomy's future financial or operating performance. Forward-looking statements in this press release include, but are not limited to, Otonomy's expectations regarding the commercial launch of AuriPro in the United States. Otonomy's expectations regarding these matters may not materialize, and actual results in future periods are subject to risks and uncertainties. Actual results may differ materially from those indicated by these forward-looking statements as a result of these risks and uncertainties, including but not limited to: the uncertainties inherent in the clinical drug development process, including, without limitation, Otonomy's ability to adequately demonstrate the safety and efficacy of its product candidates, the preclinical and clinical results for its product candidates, which may not support further development of product candidates, and challenges related to patient enrollment in clinical trials; Otonomy's ability to obtain regulatory approval for its product candidates; side effects or adverse events associated with Otonomy's product candidates; developments related to competitors and the industry; Otonomy's dependence on third parties to conduct preclinical studies and clinical trials; Otonomy's dependence on third parties for the manufacture of products; Otonomy's dependence on a small number of suppliers for raw materials; Otonomy's ability to protect its intellectual property related to product candidates in the United States and throughout the world; and other risks. Information regarding the foregoing and additional risks may be found in the section entitled "Risk Factors" in Otonomy's Annual Report on Form 10-K filed with the Securities and Exchange Commission (the SEC) on March 18, 2015, and Otonomy's future reports to be filed with the SEC. The forward-looking statements in this press release are based on information available to Otonomy as of the date hereof. Otonomy disclaims any obligation to update any forward-looking statements, except as required by law.

CONTACT: Media Inquiries Canale Communications Heidi Chokeir, Ph.D. Vice President 619.849.5377 heidi@canalecomm.com Investor Inquiries Westwicke Partners Robert H. Uhl Managing Director 858.356.5932 robert.uhl@westwicke.com

Source:Otonomy, Inc.