W2O has acquired ARC2 Communications and Media, the Los Angeles-based healthcare PR shop that was launched by two top Hill+Knowlton Strategies executives.

arcChristine Cassiano and Andrea Rothschild served as senior VPs and west coast health practice leads for the WPP unit and did stints at Amgen, the biopharmaceutical giant.

Cassiano also worked at Allergan, Abraxis BioScience, Sony Pictures Entertainment and Tickets.com

At Amgen, Rothschild headed the global commercial operations communications team, handling programming and issues management for products on the market and in the pipeline.

"We’re joining the W2O team to reinvent how we communicate, create content and innovate for clients from healthcare to entertainment to global brands,” said Cassiano and Rothschild in a joint statement.

Jim Weiss, CEO of W2O, called L.A. the "content capital of the world." The addition of ARC2 is part of his firm's plan to "innovate and challenge the status quo in how we entertain, consume and share content in any industry.”