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Portola Pharmaceuticals to Host Webcast Event and Conference Call at ACC.18 to Discuss Late-Breaking Oral Presentation Highlighting New Interim Data for Andexanet Alfa
Event Scheduled for Monday, March 12, 2018 at 12:30 p.m. ET

SOUTH SAN FRANCISCO, Calif. , March 05, 2018 (GLOBE NEWSWIRE) -- Portola Pharmaceuticals, Inc.® (NASDAQ:PTLA) today announced that it will host a live audio webcast and conference call on Monday, March 12, 2018 at the American College of Cardiology's 67th Annual Scientific Session & Expo (ACC.18), following the presentation of new interim data from the ongoing ANNEXA-4 Phase 3b/4 trial of the Company's investigational Factor Xa reversal agent andexanet alfa, during the Late-Breaking Clinical Trials Session.

The conference call and live audio webcast will be hosted by Dr. C. Michael Gibson, ANNEXA-4 Executive Committee member, Harvard Medical School professor and chairman of the PERFUSE Study Group , who will provide an overview of the interim results presented during the Late-Breaking Clinical Trials Session. Dr. Gibson will be joined by Portola management for the Q&A portion of the call.

ANNEXA-4 Late-Breaking Oral Presentation Details 
Session:  (409) Late-Breaking Clinical Trials Session: Interventional Cardiology
Title:  ANNEXA-4: Interim Report on the ANNEXA-4 Study: Andexanet for Reversal of 
  Anticoagulation in Factor Xa-Associated Acute Major Bleeding
Presenter:  Stuart J. Connolly, M.D., Professor Emeritus of Medicine, McMaster University, Hamilton 
  Health Sciences 
Date:  Monday, March 12, 10:45 a.m. – 11:45 a.m. ET
Room: ACC.18 Main Tent, Hall C


Webcast and Conference Call Details
To access the live investor webcast and presentation slides on Monday, March 12 at 12:30 p.m. ET (9:30 a.m. PT), go to the Investor Relations section of the company's website at A replay of the webcast will be available for 30 days. For participants that wish to participate in the Q&A portion, a live conference call can be accessed by phone by calling (844) 452-6828 from the United States and Canada or 1 (765) 507-2588 internationally and using the passcode 8493604. Please note you will also need to open the webcast in order to view the accompanying presentation slides. Analysts and investors who would like to attend the event in Orlando should RSVP to Cara Miller at for additional details.

About Portola Pharmaceuticals, Inc.
Portola Pharmaceuticals is a biopharmaceutical company developing product candidates that could significantly advance the fields of thrombosis and other hematologic diseases. The Company's first medicine Bevyxxa® (betrixaban), an oral, once-daily Factor Xa inhibitor, was approved by the U.S. Food and Drug Administration in June 2017. The company is also working to advance two clinical programs for andexanet alfa, a recombinant protein designed to reverse the anticoagulant effect in patients treated with an oral or injectable Factor Xa inhibitor; and cerdulatinib, a SYK/JAK inhibitor in development to treat hematologic cancers. Portola's partnered program is focused on developing selective SYK inhibitors for inflammatory conditions. For more information, visit and follow the Company on Twitter @Portola_Pharma.

Investor Contact: 
Cara Miller
Portola Pharmaceuticals

Media Contact:
Laurie Masonson
W2O Group 

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Portola Pharmaceuticals, Inc.