Jennifer Morrison is the first member of the original cast of "House" to be leaving the show, EW’s Michael Ausiello reports on his The Ausiello Files blog. She plays Dr. Allison Cameron.
According to the report, "Neither Fox nor Morrison’s reps would comment, but I’m told the actress did not quit; her exit was a creative decision on the part of producers. Morrison — the first of the show’s original cast members to depart — shot her last scene earlier this week and her final episode will air in November."
The repost also says that Jesse Spencer, whose character is married to Morrison’s character, will not be leaving the series. "House" debuted in 2004.