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Otonomy Initiates Patient Enrollment in Single Phase 3 Clinical Trial of OTIPRIO™ in Patients with Acute Otitis Externa

SAN DIEGO, June 09, 2016 (GLOBE NEWSWIRE) -- Otonomy, Inc. (Nasdaq:OTIC), a 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 patient in the single OTIPRIOTM Phase 3 clinical trial in pediatric and adult patients with acute otitis externa (AOE), also known as swimmer’s ear. The company expects to complete this trial and report topline results in the fourth quarter of 2016. If the results are positive, Otonomy expects to submit a supplemental New Drug Application (sNDA) to the U.S. Food and Drug Administration (FDA) in the first half of 2017.

“Initiation of this Phase 3 clinical trial keeps us on track to recruit patients during the peak summer season for AOE which is important in order to complete enrollment and report topline results by end of the year,” said David A. Weber, Ph.D., president and CEO of Otonomy. “This label expansion indication is significant for OTIPRIO for several reasons. First, AOE would be the first OTIPRIO indication that is predominantly physician office-based. Second, this would expand OTIPRIO usage to the adult population since AOE affects patients of all ages. And third, this provides an opportunity for use of OTIPRIO by pediatricians and primary care physicians who currently treat the majority of AOE patients. We look forward to successfully completing this trial and filing for FDA approval to support the market expansion of OTIPRIO in the United States.”

The one-month, prospective, randomized, double-blind, sham-controlled, multicenter, Phase 3 clinical trial is expected to enroll approximately 500 patients age 6 months and older with acute otitis externa, in the United States and Canada. Patients are randomized to receive a single administration of 12 mg OTIPRIO (equal to 0.2 mL) or sham (empty syringe) to the external ear canal of the affected ear(s). The primary endpoint is clinical cure at Day 8 defined as complete resolution of the signs and symptoms related to acute otitis externa (i.e. tenderness, erythema, and edema) as determined by a blinded clinical assessor. Safety outcome measures will include reporting of adverse events and otoscopic examinations. Additional information about the clinical trial can be found at www.clinicaltrials.gov.

About Acute Otitis Externa

Acute otitis externa (AOE), also known as swimmer’s ear, is a common condition involving infection and inflammation of the external ear canal typically caused by bacterial infection. According to medical claims data, there are nearly 4 million episodes of AOE each year in the United States. Symptoms usually appear within a few days of swimming and include itchiness, redness, swelling, pain and pus draining from the infected ear. Antibiotic ear drops are considered the standard of care treatment for AOE with the typical regimen requiring several administrations to the affected ear each day for up to 10 days.

About OTIPRIO

OTIPRIO (ciprofloxacin otic suspension) is a fluoroquinolone antibacterial indicated for the treatment of pediatric patients with bilateral otitis media with effusion undergoing tympanostomy tube placement. OTIPRIO is administered by a physician as a single 0.1 mL (6 mg) intratympanic administration into each affected ear, following suctioning of the middle ear effusion. The thermosensitive suspension exists as a liquid at or below room temperature and gels when warmed. In two Phase 3 trials, a single intraoperative administration of OTIPRIO demonstrated a statistically significant reduction in the cumulative proportion of study treatment failures compared to tubes alone (p-value <0.001).

Important Safety Information for OTIPRIO

Contraindications: OTIPRIO is contraindicated in patients with a history of hypersensitivity to ciprofloxacin, to other quinolones, or to any of the components of OTIPRIO.

Warnings and Precautions - Potential for Microbial Overgrowth: OTIPRIO may result in overgrowth of nonsusceptible bacteria and fungi. If such infections occur, institute alternative therapy.

Adverse Reactions: Adverse reactions (incidence at least 3%) that occurred in two Phase 3 trials with OTIPRIO vs sham were: nasopharyngitis (5% vs 4%), irritability (5% vs 3%), and rhinorrhea (3% vs 2%).

Use in Specific Populations - Pediatric Use: The safety and effectiveness of OTIPRIO in infants below six months of age have not been established.

Full prescribing information can be found at www.OTIPRIO.com.

About Otonomy

Otonomy is a biopharmaceutical company focused on the development and commercialization of innovative therapeutics for diseases and disorders of the ear. OTIPRIO (ciprofloxacin otic suspension) is approved in the United States for use during tympanostomy tube placement surgery in pediatric patients, and commercial launch commenced in March 2016. OTO-104 is a steroid in development for the treatment of Ménière's disease and other severe balance and hearing disorders. Two Phase 3 trials in Ménière's disease patients are underway, with results expected during the second half of 2017. OTO-311 is an NMDA receptor antagonist for the treatment of tinnitus that is in a Phase 1 clinical safety trial. Otonomy’s proprietary formulation technology utilizes a thermosensitive gel and drug microparticles to enable single dose treatment by a physician. 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 future financial or operating performance of Otonomy. Forward-looking statements in this press release include, but are not limited to, the design and timing of results for the OTIPRIO Phase 3 clinical trial in acute otitis externa, the timing of the sNDA filing for OTIPRIO in acute otitis externa, and the timing of results for the two OTO-104 Phase 3 clinical trials in Ménière's disease. 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 additional financing; Otonomy's dependence on the commercial success of OTIPRIO and the regulatory success and advancement of additional product candidates, such as OTO-104 and 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, 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; the impact of coverage and reimbursement decisions by third-party payors on the pricing and market acceptance of OTIPRIO; Otonomy's dependence on third parties for the manufacture of OTIPRIO and product candidates; Otonomy's dependence on a small number of suppliers for raw materials; Otonomy's ability to protect its intellectual property related to OTIPRIO and its 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 May 9, 2016, 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.

Contacts: 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

Source:Otonomy, Inc.