NEW YORK and RESEARCH TRIANGLE PARK, N.C.--(BUSINESS WIRE)--Pfizer Inc. (NYSE: PFE) (“Pfizer”) and Icagen, Inc. (NASDAQ: ICGN) (“Icagen”) announced today that Pfizer’s wholly-owned subsidiary, Eclipse Acquisition Corp. (“Eclipse”), has extended the expiration date of the subsequent offering period of its tender offer for all outstanding shares of common stock of Icagen for $6.00 per share, paid to the seller in cash, without interest thereon, less any applicable withholding and transfer taxes.