 NEW YORK--BUSINESS WIRE--Bragar Eagel Squire, P.C., a nationally recognized stockholder rights law firm, is investigating potential claims against Protagonist Therapeutics, Inc. Protagonist or the Company NASDAQ: PTGX on behalf of Protagonist stockholders. Our investigation concerns whether Protagonist has violated the federal securities laws andor engaged in other unlawful business practices. Click here to participate in the action. Protagonist Therapeutics is a biopharmaceuti 