Paratek’s New Drug Applications for Oral and Intravenous Omadacycline Accepted for Priority Review by FDA

-- PDUFA Action Date in October 2018 --

BOSTON, April 04, 2018 -- Paratek Pharmaceuticals, Inc. (Nasdaq:PRTK) announced today that the U.S. Food and Drug Administration (FDA) has accepted the New Drug Applications (NDAs) and granted a priority review for omadacycline, an investigational once-daily oral and intravenous (IV) broad spectrum antibiotic. Paratek is seeking approval of omadacycline, a modernized tetracycline, for the treatment of community-acquired bacterial pneumonia (CABP) and acute bacterial skin and skin structure infections (ABSSSI). The two NDAs were granted priority review based on the significant unmet medical need for new agents to treat ABSSSI and CABP.  In addition to Priority review, omadacycline has previously been granted Qualified Infectious Disease Product (QIDP) and Fast Track designations for the treatment of CABP and ABSSSI.

“Antibiotic resistance is on the rise, and the need for new antibiotics is urgent. The FDA acceptance of these applications brings us one step closer to providing physicians an important new option in the fight against community-acquired infections,” said Evan Loh, MD, President, Chief Operating Officer and Chief Medical Officer of Paratek. “With both oral and IV formulations, omadacycline has the potential to be the first once-daily oral and IV tetracycline antibiotic approved in nearly 20 years. Based upon its demonstrated clinical profile, omadacycline enables physicians to transition their patients from hospital to home faster, thereby reducing overall health care costs.”

The NDAs are supported by the Company’s Phase 3 program for omadacycline, which included three pivotal registration studies: two studies in ABSSSI and one study in CABP.  Omadacycline met all required FDA and European Medicines Agency (EMA) primary endpoints in each study and demonstrated a generally safe and well-tolerated profile.

In the NDA acceptance letter, the FDA stated that no filing or potential review issues were identified at this time.  The FDA stated that it is currently planning to hold an advisory committee meeting to review these applications.

“The FDA’s acceptance of our NDA filings with Priority Review represents an important step forward for omadacycline and Paratek,” said Michael Bigham, Chairman and Chief Executive Officer. “We look forward to continue working with the FDA during the review process.  We remain excited about the potential for omadacycline to serve as a much-needed new antibiotic for patients and physicians.”

About Paratek Pharmaceuticals, Inc.
Paratek Pharmaceuticals, Inc. is a biopharmaceutical company focused on the development and commercialization of innovative therapies based upon its expertise in novel tetracycline chemistry. The Company’s lead product candidate, omadacycline, is an investigational new, once-daily oral and intravenous broad-spectrum antibiotic being developed for the treatment of serious community-acquired bacterial infections, including community-acquired bacterial pneumonia (CABP), acute bacterial skin and skin structure infections (ABSSSI), and urinary tract infections (UTI). Omadacycline has been granted Qualified Infectious Disease Product designation and Fast Track status by the U.S. Food and Drug Administration (FDA) for the target indications of ABSSSI, CABP, uncomplicated urinary tract infections (uUTI) and complicated urinary tract infections (cUTI). Paratek’s New Drug Applications have been accepted for priority review by the U.S. FDA and the Company is preparing a marketing authorization in the European Union. Paratek has entered into a collaboration agreement with Zai Lab for the development and commercialization of omadacycline in the greater China region and retains all remaining global rights.

Under a research agreement with the U.S. Department of Defense, omadacycline is also being studied against pathogenic agents causing infectious diseases of public health and biodefense importance, including plague and anthrax.

Paratek's second Phase 3 product candidate, SEYSARA™ (sarecycline), is being developed by Allergan in the U.S. as a new once-daily oral therapy for the treatment of acne. Allergan has completed Phase 3 development activities for SEYSARA and its new drug application was accepted for review by the U.S. FDA in December 2017. Paratek retains all ex-U.S. rights to sarecycline.

Recognizing the serious threat of bacterial infections, Paratek is dedicated to providing solutions that enable positive outcomes and lead to better patient stories.

For more information, visit www.ParatekPharma.com or follow @ParatekPharma on Twitter.

Forward Looking Statements
This press release contains forward-looking statements including statements related to our overall strategy, product candidates, clinical studies, prospects, potential and expected results, including statements about the timing of advancing omadacycline and otherwise preparing for clinical studies, the timing of enrollment in our clinical studies and our reporting of the results of such studies, the potential for omadacycline to serve as an empiric monotherapy treatment option for patients suffering from ABSSSI, CABP, UTI, and other bacterial infections when resistance is of concern, the prospect of omadacycline providing broad-spectrum activity, and our ability to obtain regulatory approval of omadacycline. All statements, other than statements of historical facts, included in this press release are forward-looking statements, and are identified by words such as "advancing," "believe," "expect," "well positioned," "look forward," "anticipated," "continued," and other words and terms of similar meaning. These forward-looking statements are based upon our current expectations and involve substantial risks and uncertainties. We may not actually achieve the plans, carry out the intentions or meet the expectations or projections disclosed in our forward-looking statements and you should not place undue reliance on these forward-looking statements. Our actual results and the timing of events could differ materially from those included in such forward-looking statements as a result of these risks and uncertainties. These and other risk factors are discussed under "Risk Factors" and elsewhere in our Annual Report on Form 10-K for the year ended December 31, 2017, and our other filings with the Securities and Exchange Commission.  We expressly disclaim any obligation or undertaking to update or revise any forward-looking statements contained herein.

CONTACTS:
Investor and Media Relations:
Ben Strain
617-807-6688
[email protected]