CLEVELAND--(BUSINESS WIRE)--The Peiffer Rosca Wolf law firm is investigating whether members of the board of directors of KYTHERA Biopharmaceuticals, Inc. (“KYTHERA” or “Company”) (NASDAQ GS: KYTH) breached their fiduciary duties by entering into a definitive agreement to a proposed transaction in which Allergan plc (“Allergan”) (NYSE: AGN) will acquire KYTHERA in a cash and equity transaction valued at $75.00 per KYTHERA share, or approximately $2.1 billion. Under terms of the agreement, the f


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