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Acer Therapeutics Reports Positive Results From Pivotal Clinical Trial of EDSIVO™ (celiprolol) for Treatment of Vascular Ehlers-Danlos Syndrome

⦁ Company intends to file NDA for EDSIVO™ in first half of 2018     –

September 25, 2017

 

Cambridge, MA – Acer Therapeutics Inc., (Nasdaq: ACER), a pharmaceutical company focused on the acquisition, development and commercialization of therapies for serious rare and ultra-rare diseases with critical unmet medical need, today announced positive results from the pivotal clinical trial of EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos Syndrome (vEDS). Acer’s retrospective source verified analysis of the trial data, including the primary and secondary endpoints, confirmed the data from a previously published randomized controlled clinical study of celiprolol(1). Acer will use this pivotal clinical data to support a New Drug Application (NDA) regulatory filing in the U.S. in the first half of 2018. Ehlers-Danlos Syndrome (EDS) is a group of hereditary disorders of connective tissue. vEDS is the most severe subtype where patients suffer from life threatening arterial dissections and ruptures, as well as intestinal and uterine ruptures.  There are currently no FDA approved therapies for vEDS(2). “We have studied celiprolol for nearly two decades in vEDS patients and this is the only drug to ever demonstrate a clinical benefit in this difficult to treat patient population in a randomized, controlled clinical study,” said Pierre Boutouyrie M.D., Ph.D., co-director of the clinical pharmacology service at the Georges-Pompidou European Hospital, Greater Paris University Hospitals (AP-HP) and Principal Investigator for the published celiprolol study. “Having established celiprolol as the standard of care in France for vEDS patients, we are excited to collaborate with Acer to help bring celiprolol to U.S. patients who are suffering from this devastating, life-threatening disease.” The previously completed European study, published on October 30, 2010, in The Lancet, was stopped early having achieved statistical significance in its primary endpoints, with arterial dissection or rupture affecting 5 (20%) celiprolol patients and 14 (50%) subjects in the non-treated control group (hazard ratio [HR] 0.36; p-value 0.04). The combined primary and secondary endpoints of intestinal or uterine rupture affected 6 (24%) celiprolol patients and 17 (61%) subjects in the non-treated control group (HR 0.31; p-value 0.01). The study was conducted in 53 patients, who were randomly assigned either a twice daily treatment of celiprolol or no treatment.  Mean duration of follow-up was 47 months prior to trial halt. “We are committed to bringing EDSIVO™ to vEDS patients who currently do not have access to this treatment,” said Robert D. Steiner, M.D., Chief Medical Officer of Acer. “Our confirmation of the published celiprolol clinical data with an Acer-sponsored retrospective source verified analysis of the trial data represents a critical element of the clinical module in our NDA, which we are diligently building, along with current manufacturing, non-clinical and other components of the regulatory package.” “We continue to successfully rapidly advance our lead product candidate, EDSIVO™, a potential life-saving therapy for patients with vEDS, towards an NDA filing, which we expect to accomplish in the first half of 2018,” said Chris Schelling, CEO and Founder of Acer. “In addition to source verifying a definitive Event-Free Survival endpoint from a previously completed robust clinical study, modernizing manufacturing and assembling other components of the regulatory package, we are executing on a number of key medical affairs focused initiatives for vEDS patients.  Specifically, we are setting up Centers of Excellence to optimize patient care, and intend to develop a prospective vEDS Patient Registry and provide integrated care support programs.”

About EDSIVO™ and vEDS Ehlers-Danlos Syndrome (EDS) is a group of hereditary disorders of connective tissue. vEDS is the most severe subtype where patients suffer from life threatening arterial dissections and ruptures, as well as intestinal and uterine ruptures. The average mortality is 51 years of age. An Acer commissioned patient-finder study identified 2,200 vEDS patients in the U.S. from an analysis of commercially available patient claims data. However, experts estimate as many as 5,000 patients may be affected. There are currently no FDA-approved therapies for vEDS(2). Acer is advancing EDSIVO™ (celiprolol), a new chemical entity (NCE), for the treatment of vEDS and plans to file a NDA based on a randomized controlled clinical study of celiprolol.(1) In 2015, the U.S. Food and Drug Administration (FDA) granted EDSIVO™ orphan drug designation for the potential treatment of vEDS.

 

About Acer Therapeutics Acer, headquartered in Cambridge, MA, is a pharmaceutical company that acquires, develops and intends to commercialize therapies for patients with serious rare and ultra-rare diseases with critical unmet medical need. Acer’s late-stage clinical pipeline includes two candidates for severe genetic disorders for which there are few or no FDA-approved treatments: EDSIVO™ (celiprolol) for vEDS, and ACER-001 (a fully taste-masked, immediate release formulation of sodium phenylbutyrate) for urea cycle disorders (UCD) and Maple Syrup Urine Disease (MSUD). There are no FDA-approved drugs for vEDS and MSUD and limited options for UCD, which collectively impact more than 4,000 patients in the United States. Acer’s products have clinical proof-of-concept and mechanistic differentiation, and Acer intends to seek approval for them in the U.S. by using the regulatory pathway established under section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, or FFDCA, that allows an applicant to rely for approval at least in part on third-party data, which is expected to expedite the preparation, submission, and approval of a marketing application. For more information, visit www.www.acertx.com.

 

References

(1) Ong KT, et al. Effect of celiprolol on prevention of cardiovascular events in vascular Ehlers-Danlos syndrome: a prospective randomised, open, blinded-endpoints trial. Lancet. 2010; 376: 1476–84.

(2) Pepin MG, et al. Survival is affected by mutation type and molecular mechanism in vascular Ehlers–Danlos syndrome (EDS type IV) Genet Med. 16: 881-888.

 

Forward-Looking Statements This press release contains “forward-looking statements” that involve substantial risks and uncertainties for purposes of the safe harbor provided by the Private Securities Litigation Reform Act of 1995.  All statements, other than statements of historical facts, included in this press release regarding strategy, future operations, future financial position, future revenue, projected expenses, prospects, plans and objectives of management are forward-looking statements. Examples of such statements include, but are not limited to, statements relating to Acer’s listing on the Nasdaq Capital Market; expectations regarding the capitalization, resources and ownership structure of the company; the potential for EDSIVO™ (celiprolol) and ACER-001 to safely and effectively target diseases; the adequacy of the company’s capital to support its future operations and its ability to successfully initiate and complete clinical trials; the nature, strategy and focus of the company; the development and commercial potential of any product candidates of the company; and the executive and board structure of the company. Acer may not actually achieve the plans, carry out the intentions or meet the expectations or projections disclosed in the forward-looking statements and you should not place undue reliance on these forward-looking statements. Such statements are based on management’s current expectations and involve risks and uncertainties. Actual results and performance could differ materially from those projected in the forward-looking statements as a result of many factors, including, without limitation, risks and uncertainties associated with the ability to project future cash utilization and reserves needed for contingent future liabilities and business operations, the availability of sufficient resources of the company to meet its business objectives and operational requirements, the fact that the results of earlier studies and trials may not be predictive of future clinical trial results, the protection and market exclusivity provided by Acer’s intellectual property, risks related to the drug development and the regulatory approval process and the impact of competitive products and technological changes. Acer disclaims any intent or obligation to update these forward-looking statements to reflect events or circumstances that exist after the date on which they were made.

Investor Contact:

Hans Vitzthum

LifeSci Advisors

Ph: 212-915-2568

[email protected]

 

Acer Therapeutics to Present at the Cantor Fitzgerald Global Healthcare Conference

CAMBRIDGE, MA, September 22, 2017 – Acer Therapeutics Inc., (Nasdaq: ACER), a pharmaceutical company focused on the acquisition, development and commercialization of therapies for serious rare and ultra-rare diseases with critical unmet medical need, today announced that Chris Schelling, Chief Executive Officer and Founder, will provide a corporate overview at the Cantor Fitzgerald Global Healthcare Conference, being held September 25-27, 2017 in New York City.

 

Acer Therapeutics Conference Presentation Details

Date: Tuesday, September 26

Time: 8:00 am Eastern Time

Location: InterContinental New York Barclay Hotel, Rockefeller Room

Webcast: https://www.acertx.com/investor-relations/events-presentations/

 

About Acer Therapeutics Acer, headquartered in Cambridge, MA, is a pharmaceutical company that acquires, develops and intends to commercialize therapies for patients with serious rare and ultra-rare diseases with critical unmet medical need. Acer’s late-stage clinical pipeline includes two candidates for severe genetic disorders for which there are few or no FDA-approved treatments: EDSIVO™ (celiprolol) for vEDS, and ACER-001 (a fully taste-masked, immediate release formulation of sodium phenylbutyrate) for urea cycle disorders (UCD) and Maple Syrup Urine Disease (MSUD). There are no FDA-approved drugs for vEDS and MSUD and limited options for UCD, which collectively impact more than 4,000 patients in the United States. Acer’s products have clinical proof-of-concept and mechanistic differentiation, and Acer intends to seek approval for them in the U.S. by using the regulatory pathway established under section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, or FFDCA, that allows an applicant to rely for approval at least in part on third-party data, which is expected to expedite the preparation, submission, and approval of a marketing application. For more information, visit www.www.acertx.com.

 

Contact:

Hans Vitzthum

LifeSci Advisors, LLC

212-915-2568

[email protected]

 

Acer Therapeutics and Opexa Therapeutics Close Merger and Financing

Acer Therapeutics and Opexa Therapeutics Close Merger and Financing

-Merger to create a pre-NDA-stage, Nasdaq-listed, pharmaceutical company focused on the development and commercialization of therapies for serious rare diseases with critical unmet medical need- -Combined company, renamed Acer Therapeutics Inc., to commence trading on Nasdaq under the symbol “ACER” on September 21- -Concurrent financing of $15.7 million from Acer investor syndicate- -Acer plans to file a NDA for its lead product, EDSIVO™, for the treatment of vascular Ehlers-Danlos Syndrome (vEDS) in the first half of 2018-

CAMBRIDGE, MA – Acer Therapeutics Inc., (Nasdaq: ACER), a pharmaceutical company focused on the acquisition, development and commercialization of therapies for serious rare and ultra-rare diseases with critical unmet medical need, announced that today it completed the merger with Opexa Therapeutics, Inc., under which the stockholders of Acer (including investors in a financing that closed concurrently with the merger) become holders of 88.8% of combined company’s outstanding common stock, with Opexa shareholders retaining 11.2%. In conjunction with the merger, a syndicate of existing and new investors led by TVM Capital Life Sciences invested approximately $15.7 million in Acer (including through a conversion of approximately $5.7 million in outstanding convertible notes) immediately prior to closing of the merger. “Acer’s goal is to become a leading pharmaceutical company that acquires, develops and commercializes therapies for the treatment of patients with serious rare and ultra-rare diseases with critical unmet medical need,” said Chris Schelling, Chief Executive Officer and founder of Acer. “We have committed significant resources to rapidly advance our lead candidate EDSIVO™, a potential life-saving therapy for patients with vEDS. We believe that the proceeds from the concurrent financing will allow us to advance EDSIVO™ through NDA submission with the FDA in the first half of 2018. As a public company, we now look forward to engaging with a broader pool of investors as we seek to advance and expand our pipeline and make multiple products available to patients over the next several years.”

About the Merger Existing stockholders of Acer, as well as investors in Acer’s concurrent financing, received newly issued shares of Opexa common stock in connection with the merger. In the combined company: (a) Opexa shareholders retained 11.2%, (b) Acer stockholders own 63.8% (excluding shares issued to them in the concurrent financing), and (c) the investors participating in the concurrent financing own 25% (excluding shares previously held by them). The combined company has approximately 6.6 million shares of common stock outstanding, following a reverse split of 1-for-10.355527. Upon completion of the merger today, Opexa was renamed Acer Therapeutics Inc. The combined company will commence trading on the Nasdaq Capital Market under the symbol “ACER” on September 21, 2017. The directors and the sole executive officer of Opexa resigned from their positions with Opexa upon the closing of the merger, and the combined company is now under the leadership of Acer’s current executive management team with Chris Schelling serving as President and Chief Executive Officer. The board of directors of the combined company consists of 7 members: Steve Aselage, Jason Amello, Hubert Birner, John Dunn, Michelle Griffin, Luc Marengere and Mr. Schelling.

About Acer Therapeutics Acer, headquartered in Cambridge, MA, is a pharmaceutical company that acquires, develops and intends to commercialize therapies for patients with serious rare and ultra-rare diseases with critical unmet medical need. Acer’s late-stage clinical pipeline includes two candidates for severe genetic disorders for which there are few or no FDA-approved treatments: EDSIVO™ (celiprolol) for vEDS, and ACER-001 (a fully taste-masked, immediate release formulation of sodium phenylbutyrate) for urea cycle disorders (UCD) and Maple Syrup Urine Disease (MSUD). There are no FDA-approved drugs for vEDS and MSUD and limited options for UCD, which collectively impact more than 4,000 patients in the United States. Acer’s products have clinical proof-of-concept and mechanistic differentiation, and Acer intends to seek approval for them in the United States by using the regulatory pathway established under section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, or FFDCA, that allows an applicant to rely for approval at least in part on third-party data, which is expected to expedite the preparation, submission, and approval of a marketing application. For more information, visit www.www.acertx.com.

Forward-Looking Statements This press release contains “forward-looking statements” that involve substantial risks and uncertainties for purposes of the safe harbor provided by the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this press release regarding strategy, future operations, future financial position, future revenue, projected expenses, prospects, plans and objectives of management are forward-looking statements. Examples of such statements include, but are not limited to, statements relating to Acer’s listing on the Nasdaq Capital Market; expectations regarding the capitalization, resources and ownership structure of the company; the potential for EDSIVO™ (celiprolol) and ACER-001 to safely and effectively target diseases; the adequacy of the company’s capital to support its future operations and its ability to successfully initiate and complete clinical trials; the nature, strategy and focus of the company; the development and commercial potential of any product candidates of the company; and the executive and board structure of the company. Acer may not actually achieve the plans, carry out the intentions or meet the expectations or projections disclosed in the forward-looking statements and you should not place undue reliance on these forward-looking statements. Such statements are based on management’s current expectations and involve risks and uncertainties. Actual results and performance could differ materially from those projected in the forward-looking statements as a result of many factors, including, without limitation, risks and uncertainties associated with the ability to project future cash utilization and reserves needed for contingent future liabilities and business operations, the availability of sufficient resources of the company to meet its business objectives and operational requirements, the fact that the results of earlier studies and trials may not be predictive of future clinical trial results, the protection and market exclusivity provided by Acer’s intellectual property, risks related to the drug development and the regulatory approval process and the impact of competitive products and technological changes. Acer disclaims any intent or obligation to update these forward-looking statements to reflect events or circumstances that exist after the date on which they were made.

Investor Contact:

Hans Vitzthum

LifeSci Advisors

Ph: 212-915-2568

[email protected]

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