GlaxoSmithKline (NYSE: GSK) will work with a new agency in 2011 for its advertising and marketing campaign.

GSK said Monday that it had selected PHD of Omnicom Group for the $1.4 billion account in the U.S. PHDP won out over MediaCom of WPP, which held the previous contract, according to AdvertisingAge.

Read the AdvertisingAge report here.

Read GSK’s announcement here.

GSK maintains its U.S. headquarters in RTP.

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