Tetraphase Pharmaceuticals to Host Fourth Quarter and Full-Year 2018 Financial Results Conference Call

Tetraphase Pharmaceuticals, Inc. TTPH, a biopharmaceutical company focused on developing and commercializing novel tetracyclines to treat serious and life-threatening conditions, today announced that company management will host a conference call at 4:30 p.m. ET on Thursday, March 14, 2019 to discuss fourth quarter and full-year 2018 financial results and provide a general corporate update.

The conference call may be accessed by dialing 844-831-4023 (U.S. and Canada) or 731-256-5215 (international) and entering conference ID number 4187876. A live audio webcast of the conference call will be available online from the "Investors – Events & Presentations" section of the Tetraphase website at www.tphase.com.

A replay of the conference call will be available from 7:30 p.m. ET on Thursday, March 14, 2019, through 7:30 p.m. ET on Thursday, March 21, 2019 by dialing 855-859-2056 (U.S. and Canada) and 404-537-3406 for (international) callers. The conference ID number is 4187876. A replay of the webcast will be available by visiting Tetraphase's website.

About Tetraphase Pharmaceuticals, Inc.

Tetraphase Pharmaceuticals, Inc., is a biopharmaceutical company using its proprietary chemistry technology to create novel tetracyclines for serious and life-threatening conditions, including bacterial infections caused by many of the multidrug-resistant bacteria highlighted as urgent public health threats by the World Health Organization and the Centers for Disease Control and Prevention. The Company has created more than 3,000 novel tetracycline compounds using its proprietary technology platform. Tetraphase's lead product XERAVA^TM is approved for the treatment of complicated intra-abdominal infections by the U.S. Food and Drug Administration and the European Medicines Agency. The Company's pipeline also includes TP-271 and TP-6076, which are in Phase 1 clinical trials and TP-2846 which is in preclinical testing for acute myeloid leukemia. Please visit www.tphase.com for more company information.

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