ZSAN Zosano Pharma Corporation

Zosano Pharma Corporation (NASDAQ:ZSAN), a clinical-stage biopharmaceutical company, today announced that early onset of action data for Qtrypta™, Zosano’s investigational therapy for the acute treatment of migraine formulated utilizing its microneedle system, were presented at the Annual Headache Cooperative of the Pacific Winter Conference.

“We believe Qtrypta shows tremendous potential to become an attractive therapeutic alternative to acutely treat migraines,” said Steven Lo, President and CEO of Zosano. “As our lead program utilizing our novel microneedle patch technology designed to deliver drug through the skin, Qtrypta has demonstrated rapid pain relief in patients who are often too nauseated to take oral medications which take time to travel to the gastrointestinal tract before providing pain relief.”

In a post-hoc retrospective analyses of data from the previously published ZOTRIP trial involving 365 subjects who received Qtrypta 3.8 mg or placebo, of 82 Qtrypta-treated subjects, 38 reported pain relief at 30 minutes, and 28 of the 38 subjects (74%) were pain free at two hours. All 6 subjects treated with Qtrypta who reported pain freedom at 30 minutes were pain-free at two hours. This compares to nine of 26 subjects (35%) in the placebo group (n=77) who reported pain relief at 30 minutes that were pain free at 2 hours, and 1 of 2 subjects that were pain free at 30 minutes being pain free at 2 hours.

These data describe therapeutic gain at 30 minutes, a measure consistent with recently published criteria for evaluating early onset of action published in Cephalalgia, an International Journal of Headache, by Pfelt-Hansen and Diener. The post-hoc analysis of data from the ZOTRIP trial suggests that the therapeutic gain for pain freedom, instead of pain relief, may be a more reliable endpoint for evaluating early onset of action.

“Qtrypta demonstrated rapid and robust improvement in the rates of pain relief and pain freedom in two hours. I believe that rapid onset of meaningful and sustained improvement is of utmost importance to patients suffering from migraines,” said Dr. Deborah Friedman, Professor of Neurology and Ophthalmology at the University of Texas Southwestern Medical Center.

About Qtrypta™ (M207)Qtrypta is Zosano’s proprietary investigational formulation of zolmitriptan delivered utilizing its proprietary transdermal microneedle system (the “System”) in development for the acute treatment of migraine. The System consists of titanium microneedles coated with drug, and in the case of Qtrypta™, the formulation is zolmitriptan. The drug-coated microneedles are designed to penetrate the stratum corneum, where the investigational drug potentially dissolves and easily enters into the bloodstream. In February 2017, the company announced statistically significant results from the ZOTRIP pivotal study, in which the 3.8 mg dose of Qtrypta™ met both co-primary endpoints, achieving pain freedom and most bothersome symptom freedom at 2 hours.

About MigraineMigraine is a highly prevalent neurological disease impacting 12% of the US population and 1 in 4 households. Patients impacted by migraine experience significant disability, with 90% unable to function normally.  Migraine attacks are estimated to lead to lost productivity costs as high as $36 billion annually in the United States, including both direct and indirect costs. Zosano believes there is a significant need for new acute treatment options since 74% of migraine patients experience inadequate treatment response.

About Zosano PharmaZosano Pharma Corporation is a clinical-stage biopharmaceutical company focused on developing products where rapid administration of approved molecules with established safety and efficacy profiles may provide substantial benefit to patients, in markets where patients remain underserved by existing therapies. The company’s transdermal microneedle system technology consists of titanium microneedles coated with drug that are designed to enable rapid systemic administration of therapeutics to patients. Zosano’s lead product candidate is Qtrypta™ (M207), which is a proprietary formulation of zolmitriptan designed to be delivered via its transdermal microneedle system technology, as an acute treatment for migraine. Learn more at www.zosanopharma.com.

Forward-Looking StatementsThis press release contains forward-looking statements. All statements other than statements of historical facts contained herein are forward-looking statements reflecting the current beliefs and expectations of management made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, including, but not limited to, the potential benefits of Qtrypta for patients and other future events and expectations described in this press release. Readers are urged to consider statements that include the words "may," "will," "would," "could," "should," "might," "believes," "estimates," "projects," "potential," "expects," "plans," "anticipates," "intends," "continues," "forecast," "designed," "goal," "approximately" or the negative of those words or other comparable words to be uncertain and forward-looking. These statements are subject to risks and uncertainties that are difficult to predict, and actual outcomes may differ materially. These include risks and uncertainties, without limitation, associated with the company’s ability to obtain additional cash resources to continue operations, the process of discovering, developing and commercializing products that are safe and effective for use as human therapeutics, risks inherent in the effort to build a business around such products and other risks and uncertainties described under the heading "Risk Factors" in the Company's most recent annual report on Form 10-K and quarterly reports on Form 10-Q. Although Zosano believes that the expectations reflected in these forward-looking statements are reasonable, Zosano cannot in any way guarantee that the future results, level of activity, performance or events and circumstances reflected in forward-looking statements will be achieved or occur. All forward-looking statements are based on information currently available to Zosano and Zosano assumes no obligation to update any such forward-looking statements.

Zosano Contacts:Christine MatthewsChief Financial Officer510-745-1200

Zosano PR:Sylvia Wheeler or Alexandra Santosswheeler@wheelhouselsa.com or asantos@wheelhouselsa.com