Otonomy Initiates Phase I Clinical Trial For Tinnitus Product Candidate, OTO-311

SAN DIEGO, Nov. 16, 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 ear, today announced the enrollment of the first subjects in a Phase 1 clinical safety trial of OTO-311, a product candidate for the treatment of tinnitus. OTO-311 is a sustained-exposure formulation of the potent and selective N-Methyl-D-Aspartate (NMDA) receptor antagonist gacyclidine. This Phase 1 dose escalation clinical safety study is being conducted in normal healthy volunteers. OTO-311 will be given as a single unilateral intratympanic injection and subjects will be observed for four weeks following dosing.

"We are pleased to initiate the clinical development of OTO-311 for tinnitus with the dosing of the first subjects in our Phase 1 clinical safety trial," said David A. Weber, Ph.D., president and CEO of Otonomy. "We expect to complete this trial in the first half of 2016, and initiate a Phase 2 trial in tinnitus patients during the second half of the year. We believe that a single-dose intratympanic treatment will be of interest to patients and their physicians."

About Tinnitus

The American Tinnitus Association reports that approximately 16 million patients in the United States have tinnitus symptoms severe enough to seek medical attention, and about two million patients cannot function on a normal day-to-day basis. Furthermore, the United States Department of Defense reports that tinnitus accounts for the most prevalent service-connected disability among veterans and that the costs of service-related tinnitus are estimated to exceed $2 billion. While the most common cause of tinnitus is exposure to loud noise, a number of other factors can be involved including heart or blood vessel problems, hormonal changes in women, ear and sinus infections, certain medications and thyroid problems. People with severe tinnitus may have trouble hearing, working and sleeping. At this time, there is no cure for tinnitus and there are no FDA-approved drugs for treating this debilitating condition.

About OTO-311

OTO-311 is a sustained-exposure formulation of the potent and selective N-Methyl-D-Aspartate (NMDA) receptor antagonist gacyclidine. Clinical studies, including pilot studies conducted with gacyclidine, support the use of NMDA receptor antagonists as potential treatments for tinnitus. In 2013, Otonomy acquired certain assets and rights to intellectual property related to the use of gacyclidine for the treatment of tinnitus from an affiliate of NeuroSystec Corporation, a company founded by serial entrepreneur Alfred Mann. In 2014, Otonomy entered into an exclusive license agreement with Ipsen (Euronext:IPN) (ADR:IPSEY) that enables Otonomy to utilize Ipsen's clinical and non-clinical gacyclidine data to support worldwide development and regulatory filings for OTO-311. The clinical data are from several Phase 1 and Phase 2 trials conducted by Ipsen in more than 300 patients who received treatment with systemic gacyclidine as a potential neuroprotectant in various neurologic trauma indications. OTO-311 utilizes Otonomy's proprietary drug delivery technology to achieve sustained exposure of gacyclidine in the inner ear from a single intratympanic (IT) injection.

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 ear following a single administration. Otonomy has three product candidates in development. OTIPRIO™ 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 the FDA has assigned a PDUFA action date of December 25, 2015 for the company's New Drug Application. OTO-104 is a steroid that has completed a Phase 2b clinical trial in 154 patients with Ménière's disease. Based on these results, Otonomy intends to initiate two parallel Phase 3 trials for OTO-104 in Ménière's disease patients with at least one trial initiated by the end of 2015. OTO-311 is an NMDA receptor antagonist for the treatment of tinnitus that is in a Phase 1 clinical safety trial. 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 OTIPRIO in the United States, the initiation of two Phase 3 trials for OTO-104, the completion of a Phase 1 clinical trial for OTO-311 and the initiation of a Phase 2 clinical trial for OTO-311. 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: Otonomy's limited operating history and its expectation that it will incur significant losses for the foreseeable future; Otonomy's ability to obtain substantial additional financing; Otonomy's dependence on the regulatory and commercial success of OTIPRIO and OTO-104 and advancing additional product candidates, such as OTO-311; 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; competition in the biopharmaceutical 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; expectations regarding potential market size, opportunity and growth; Otonomy's ability to manage operating expenses; implementation of Otonomy's business model and strategic plans for its business, products and technology; and other risks. Information regarding the foregoing and additional risks may be found in the section entitled "Risk Factors" in Otonomy's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (the SEC) on November 10, 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. Senior Vice President 619.849.5377 heidi@canalecomm.com Investor Inquiries Westwicke Partners Robert H. Uhl Managing Director 858.356.5932 robert.uhl@westwicke.com

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