Zogenix Provides Corporate Update and Reports Second Quarter Financial Results

• Reported positive top-line results from second pivotal Phase 3 trial of ZX008 in patients with Dravet syndrome, Study 1504

• Submission of U.S. and EU regulatory filings for ZX008 in Dravet syndrome anticipated by year-end 2018

• Actively enrolling global Phase 3 trial of ZX008 for treatment of Lennox-Gastaut syndrome, Study 1601

• Appointed Global Chief Commercial Officer

EMERYVILLE, Calif., Aug. 06, 2018 (GLOBE NEWSWIRE) -- Zogenix, Inc. (NASDAQ: ZGNX), a pharmaceutical company developing therapies for the treatment of rare central nervous system (CNS) disorders, today provided a corporate update and announced financial results for the second quarter and six months ended June 30, 2018.

“We were thrilled to recently announce positive top-line data from our second global Phase 3 trial of ZX008, Study 1504, for the control of convulsive seizures in children and young adults with Dravet syndrome,” said Stephen J. Farr, Ph.D., President and CEO of Zogenix. “Study 1504 met the primary efficacy endpoint, and all key secondary objectives, with high statistical significance.  This confirmatory study corroborated the positive data from Study 1, our first pivotal Phase 3 trial of ZX008 in Dravet syndrome.”

“Looking ahead, Study 1 and Study 1504 will provide the basis for regulatory submissions in both the U.S. and EU with data that reflect global clinical practice for the treatment of Dravet syndrome,” continued Dr. Farr.  “We are now focused on submitting applications for registration in the U.S. and EU before the end of the year.”

“We also continue to be pleased with the rate of enrollment in our ongoing global Phase 3 trial of ZX008 in Lennox-Gastaut syndrome (LGS), Study 1601, in the U.S.  We will continue to add sites in Europe and Australia to this global study as we advance through the rest of the year,” concluded Dr. Farr.    

Corporate Update

• Reported positive top-line results from Study 1504, the second pivotal Phase 3 clinical trial of ZX008 in Dravet syndrome in July.

  - Patients taking ZX008 achieved a 54.7% greater reduction in mean monthly convulsive seizures compared to placebo (p<0.001).  The study also met all key secondary efficacy endpoints.  

  - ZX008 was generally well-tolerated with the adverse events consistent with those observed in Study 1 and the known safety profile of fenfluramine. The incidence of overall rates of treatment-emergent adverse events was similar in the ZX008 and placebo groups. No clinical or echocardiographic evidence of the development of valvulopathy or pulmonary hypertension was observed in any subject.
   

• New Drug Application and Marketing Authorization Application preparations ongoing for ZX008 in Dravet syndrome, targeting submissions by year-end 2018.
   
• Continued enrollment in global Phase 3 trial of ZX008 for treatment of LGS, Study 1601.
   
• Appointed Ashish Sagrolikar, an industry veteran with over 25 years of global pharmaceutical sales, marketing and operations experience in rare disease and specialty pharmaceutical products, as Executive Vice President and Chief Commercial Officer, as the Company continues to build its commercial operations in preparation for anticipated launches in the U.S. and Europe.

Second Quarter 2018 Financial Results

• Due to the wind-down of Sumavel DosePro manufacturing operations in September 2017, the Company recorded no revenue for the three months ended June 30, 2018.  This compares with total revenue of $7.1 million in the second quarter ended June 30, 2017, consisting entirely of contract manufacturing revenue for Sumavel DosePro.
   
• Research and development expenses for the second quarter ended June 30, 2018, totaled $26.7 million, up from $14.9 million in the second quarter ended June 30, 2017, as the Company expanded clinical trial activities related to its ongoing Phase 3 development programs of ZX008 in Dravet syndrome and LGS.
   
• Selling, general and administrative expenses for the second quarter ended June 30, 2018, totaled $8.6 million, compared with $5.5 million in the second quarter ended June 30, 2017. 
   
• Net loss from continuing operations for the second quarter ended June 30, 2018, was $28.8 million, compared with a net loss from continuing operations of $22.5 million in the second quarter ended June 30, 2017.
   
• Total net loss for the second quarter ended June 30, 2018, was $29.0 million, or a net loss of $0.83 per share, compared with a total net loss of $23.0 million, or a net loss of $0.93 per share, in the second quarter ended June 30, 2017.

Six Months Ended June 30, 2018 Financial Results Compared to Six Months Ended June 30, 2017

• Due to the wind-down of Sumavel DosePro manufacturing operations in September 2017, the Company recorded no revenue for the six months ended June 30, 2018.  This compares with total revenue of $9.8 million in the six month period ended June 30, 2017, consisting entirely of contract manufacturing revenue for Sumavel DosePro.
   
• Research and development expenses for the six months ended June 30, 2018, totaled $49.7 million, up from $28.2 million in the six months ended June 30, 2017, as the Company expanded clinical trial activities related to its ongoing Phase 3 development programs of ZX008 in Dravet syndrome and LGS.
   
• Selling, general and administrative expenses for the six months ended June 30, 2018, totaled $16.6 million, compared with $12.1 million in the six months ended June 30, 2017.
   
• Net loss from continuing operations for the six months ended June 30, 2018, was $59.0 million, compared with a net loss from continuing operations of $43.6 million in the six months ended June 30, 2017.
   
• Total net loss for the six months ended June 30, 2018, was $59.2 million, or a net loss of $1.69 per share, compared with a total net loss of $44.3 million, or a net loss of $1.79 per share, in the six months ended June 30, 2017.
   
• As of June 30, 2018, the Company had cash and cash equivalents of $272.1 million, compared to $293.5 million at December 31, 2017.

About Zogenix
Zogenix, Inc. (Nasdaq: ZGNX) is a pharmaceutical company dedicated to developing therapies for people living with severe central nervous system (CNS) disorders who have limited or no treatment options. Led by a team of experts in rare disease development and CNS conditions, Zogenix is rapidly advancing the clinical investigation and development of ZX008 (fenfluramine hydrochloride) for patients with severe, rare epilepsies, including Dravet and Lennox-Gastaut syndromes.

For more information, visit www.zogenix.com.

Forward Looking Statement
Zogenix cautions you that statements included in this press release that are not a description of historical facts are forward-looking statements. Words such as "believes," "anticipates," "plans," "expects," "indicates," "will," "intends," "potential," "suggests," "assuming," "designed" and similar expressions are intended to identify forward-looking statements. These statements are based on the Zogenix's current beliefs and expectations. These forward-looking statements include statements regarding Study 1 and Study 1504 providing the basis for regulatory submissions in both the U.S. and EU for ZX008 in Dravet syndrome and the timing of such submissions; continued enrollment and the addition of clinical sites for Study 1601; and potential regulatory approval and launches of ZX008 in the U.S. and Europe. The inclusion of forward-looking statements should not be regarded as a representation by Zogenix that any of its plans will be achieved. Actual results may differ from those set forth in this release due to the risks and uncertainties inherent in Zogenix's business, including, without limitation: the uncertainties associated with the clinical development and regulatory approval of product candidates such as ZX008, including potential delays in the timing of regulatory submissions; the top-line data Zogenix has reported is based on preliminary analysis of key efficacy and safety data, and such data may change following a more comprehensive review of the data related to the clinical trial and such top-line data may not accurately reflect the complete results of the trial, and the FDA and other regulatory authorities may not agree with Zogenix’s interpretation of such results; potential delays in the commencement, enrollment and completion of clinical trials; Zogenix’s reliance on third parties to conduct its clinical trials, enroll patients, manufacture its preclinical and clinical drug supplies and manufacture commercial supplies of its drug products, if approved; unexpected adverse side effects or inadequate therapeutic efficacy of ZX008 may limit regulatory approval and/or commercialization, or may result in recalls or product liability claims; and other risks described in Zogenix's prior press releases as well as in public periodic filings with the Securities and Exchange Commission. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Zogenix undertakes no obligation to revise or update this press release to reflect events or circumstances after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement. This caution is made under the safe harbor provisions of Section 21E of the Private Securities Litigation Reform Act of 1995.

CONTACTS:
Investors:  Andrew McDonald
Founding Partner, LifeSci Advisors LLC
646-597-6987 | Andrew@lifesciadvisors.com

Zogenix, Inc.
Condensed Consolidated Balance Sheets (Unaudited)
(in thousands, except par value)

Zogenix, Inc.
Condensed Consolidated Statements of Operations (Unaudited)
(in thousands, except per share amounts)