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Catalyst Biosciences Receives A Notice of Allowance from The Japan Patent Office Covering Modified Factor X Polypeptides

SOUTH SAN FRANCISCO, Calif., Oct. 24, 2018 (GLOBE NEWSWIRE) -- Catalyst Biosciences, Inc. (NASDAQ:CBIO), a clinical-stage biopharmaceutical company focused on developing novel medicines to address hematology indications, today announced that it has received a Notice of Allowance from the Japan Patent Office (Patent No. 6363600 (2015-524250)) for claims in the Company’s international patent PCT/US2013/032616, covering modified Factor X polypeptides and the uses thereof. The patent includes claims that cover modified coagulation Factor X polypeptides, including Factor Xa and other forms of Factor X, and use of modified Factor X polypeptides for certain bleeding disorders.

“Modified Factor X polypeptides may represent an attractive opportunity for broad coagulation control,” said Nassim Usman, Ph.D., chief executive officer of Catalyst. “We continue to strengthen our leadership position in intellectual property for modified coagulation factors to treat bleeding disorders. The expansion of our Factor X intellectual property rights into Japan builds on our existing Factor X patent in the U.S. and our global Factor VIIa and Factor IX patent portfolios.”

Factor X is a clotting factor that has the potential to be used as a “universal procoagulant.” Once activated to Factor Xa, it activates the final common pathway of coagulation proteins, leading to the formation of a blood clot. Because of its downstream clotting pathway activity, a safe and effective Factor Xa product could potentially treat hemophilia, blood loss in trauma and surgery in individuals with normal coagulation systems, and those who are bleeding as a result of taking anti-platelet agents or anticoagulants. In preclinical studies, Catalyst has identified Factor Xa variants that have demonstrated superiority to competing Factor Xa candidates in clinical development.

About Catalyst Biosciences
Catalyst is a clinical-stage biopharmaceutical company developing novel medicines to address hematology indications. Catalyst is focused on the field of hemostasis, including the subcutaneous prophylaxis of hemophilia and facilitating surgery in individuals with hemophilia. For more information, please visit

Forward-Looking Statements
This press release contains forward-looking statements that involve substantial risks and uncertainties. Forward-looking statements include statements about the potential for Catalyst’s product candidates, including its Factor Xa variants, to treat hemophilia, blood loss in trauma and surgery in individuals with normal coagulation systems, and those who are bleeding as a result of taking anti-platelet agents or anticoagulants. Actual results or events could differ materially from the plans, intentions, expectations and projections disclosed in the forward-looking statements. Various important factors could cause actual results or events to differ materially from the forward-looking statements that the Company makes, including, but not limited to, the risk that trials and studies may be delayed and may not have satisfactory outcomes, that human trials will not replicate the results from animal studies, that potential adverse effects may arise from the testing or use of the Company’s products, including the generation of antibodies, the risk that costs required to develop or manufacture the Company’s products will be higher than anticipated, competition and other factors that affect our ability to establish collaborations on commercially reasonable terms and other risks described in the "Risk Factors" section of the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2018, filed with the Securities and Exchange Commission on August 2, 2018, along with other filings with the Securities and Exchange Commission. The Company does not assume any obligation to update any forward-looking statements, except as required by law.

Fletcher Payne, CFO 
Catalyst Biosciences, Inc. 

Josephine Belluardo, Ph.D.
LifeSci Public Relations


Source: Catalyst Biosciences, Inc.