Lauren Graham ready for 'Parenthood'

Will take over the role played by Maura Tierney in pilot

After brief negotiations, "Gilmore Girls" alumna Lauren Graham has closed a deal to join NBC's upcoming drama series "Parenthood," taking over the role played in the pilot by Maura Tierney.

Helen Hunt was originally approached to step in for Tierney, but a deal could not be made.

On "Parenthood," a contemporary take on Ron Howard's 1989 movie, Graham joins an already strong cast.

The UMS/Imagine TV series, created by Jason Katims, revolves around four adult siblings (Peter Krause, Erika Christensen, Dax Shepard, Graham) and their parents (Bonnie Bedelia and Craig T. Nelson).

Tierney pulled out of "Parenthood" in September to focus on her breast cancer treatments.

"Parenthood," exec produced by Katims, Howard, Brian Grazer and David Nevins, was slated for a fall launch but pushed to midseason after Tierney's illness was discovered in July.