Synlogic To Merger With Mirna Therapeutics

5/16/17

CAMBRIDGE, Mass. & AUSTIN, Texas--(BUSINESS WIRE)--Privately held Synlogic, Inc., has entered into a definitive merger agreement with Mirna Therapeutics, Inc. (NASDAQ:MIRN) under which Synlogic will merge with a wholly owned subsidiary of Mirna in an all-stock transaction. The merged company will continue under the Synlogic name and will focus on advancing Synlogic’s drug discovery and development platform for Synthetic Biotic medicines, which are designed using synthetic biology to genetically reprogram beneficial microbes to treat metabolic and inflammatory diseases and cancer. Synlogic also recently closed a $42 million Series C preferred stock financing from leading biotechnology investors, including Aju IB Investment, Ally Bridge Group, Arctic Aurora LifeScience, CLI Ventures, Perceptive Advisors, Rock Springs Capital, and other undisclosed new investors. Existing investors, Atlas Venture, Deerfield, New Enterprise Associates (NEA), and OrbiMed also participated in the financing.

“We believe that our Synthetic Biotic medicines are efficient and targeted biologic engines with the potential to have a transformative impact on the treatment of human diseases. While many conventional medicines address one molecular dysfunction, these living medicines have the potential to uniquely and effectively compensate for entire processes or pathways to treat patients with significant unmet medical need,” said Jose Carlos Gutierrez-Ramos, Ph.D., Chief Executive Officer of Synlogic. “This merger and our recently completed Series C financing are projected to provide the capital to progress our two lead metabolic disease programs through patient proof-of-concept studies as well as advance the development of our earlier product candidates.”

By mid-2017, Synlogic plans to initiate a Phase 1 healthy volunteers study for its lead candidate, SYNB1020, which is for the potential treatment of Urea Cycle Disorders (UCD) and hepatic encephalopathy (HE), both diseases where patients experience elevated ammonia levels. Following success in the first study, the company plans to open two parallel studies in symptomatic patients with UCD and HE. The company’s second development candidate SYNB1618 will be studied in Phenylketonuria (PKU), which is caused by defective metabolism of the amino acid phenylalanine.

“Following a thorough review of strategic alternatives, we are delighted to announce this transaction with Synlogic, which we believe is in the best interest of Mirna’s stockholders,” said Paul Lammers, M.D., M.Sc., President and Chief Executive Officer of Mirna. “Synlogic is advancing an exciting potential new class of medicines supported by a strong drug discovery and development platform, an experienced management team and a strong set of investors.”

About the Transaction:

Following the merger, current Synlogic shareholders are expected to own approximately 83 percent of the combined company and the current Mirna stockholders will own approximately 17 percent of the combined company. The exchange ratio is based on Mirna’s expected cash at the time of the close, and the actual allocation will be subject to adjustment based on Mirna’s net cash balance at closing.

The transaction has been approved by the board of directors of both companies. The merger is currently expected to close in the third quarter of 2017, subject to the approval of the stockholders of each company and the satisfaction or waiver of other customary conditions.

Wedbush PacGrow acted as exclusive strategic advisor to Mirna for the reverse merger transaction and Latham & Watkins LLP served as legal counsel to Mirna. Leerink Partners LLC acted as exclusive financial advisor to Synlogic for the reverse merger and as exclusive placement agent for the Series C financing, and Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. served as legal counsel to Synlogic.

Management and Organization:

Following the merger, Jose Carlos Gutierrez-Ramos, Ph.D., Synlogic’s Chief Executive Officer will become the chief executive officer of the merged company. The board of directors will be comprised of seven directors, including two directors currently serving on Mirna’s board. Upon closing of the transaction, the merged company will operate under the Synlogic name and the company’s common stock will trade on the NASDAQ global market under a ticker symbol to be announced at a later date. The corporate headquarters will be located in Cambridge, Massachusetts.

About Synthetic Biotic™ Medicines:

Synlogic’s innovative new class of Synthetic Biotic medicines leverages the tools and principles of synthetic biology to genetically reengineer beneficial, probiotic microbes to perform critical functions missing or damaged due to disease. The company’s two lead programs target a group of rare metabolic diseases – inborn errors of metabolism (IEM). Patients with these diseases are born with a faulty gene, inhibiting the body’s ability to breakdown commonly occurring by-products of digestion that then accumulate to toxic levels and cause serious health consequences. When delivered orally, these medicines can act from the gut to compensate for the dysfunctional metabolic pathway and have a systemic effect. Synthetic Biotic medicines are designed to clear toxic metabolites associated with specific metabolic diseases and promise to significantly improve the quality of life for affected patients.

About Synlogic™

Synlogic™ is pioneering the development of a novel class of living medicines, Synthetic Biotics™, based on its proprietary drug discovery and development platform. Synlogic’s initial pipeline includes Synthetic Biotic medicines for the treatment of rare genetic diseases, such as Urea Cycle Disorder (UCD) and Phenylketonuria (PKU). In addition, the company is leveraging the broad potential of its platform to create Synthetic Biotic medicines for the treatment of more common diseases, including liver disease, inflammatory and immune disorders, and cancer.

Synlogic is collaborating with AbbVie to develop Synthetic Biotic-based treatments for inflammatory bowel disease (IBD). For more information, please visit synlogictx.com.

About Mirna

Mirna is a biopharmaceutical company that has focused on the development of microRNA-based oncology therapeutics. Mirna's first product candidate, MRX34, the first microRNA mimic to enter clinical development in oncology, was studied as a single agent in a multicenter Phase 1 clinical trial. In September 2016, Mirna voluntarily halted enrollment and dosing in the clinical study following multiple immune-related serious adverse events (SAEs) observed in patients dosed with MRX34 over the course of the trial. Subsequently, the U.S. Food and Drug Administration (FDA) notified the Company that the Investigational New Drug (IND) Application for MRX34 was placed on full clinical hold. The Company has since closed the IND and focused on evaluating strategic alternatives, including the possibility of a merger or sale of the Company.

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