Pat Sajak, Chris Harrison, others react to Alex Trebek's cancer diagnosis

Longtime game show host has stage 4 pancreatic cancer

"Jeopardy!" host Alex Trebek
"Jeopardy!" host Alex Trebek (Emma McIntyre/Getty Images)

ROANOKE, Va. – A fixture in living rooms since 1984, many are sending thoughts and prayers to Alex Trebek.

The longtime "Jeopardy" host announced Wednesday that he's been diagnosed with state 4 pancreatic cancer.

Ken Jennings won 74 consecutive games of the show in 2004.

ABC News anchor David Muir

Actor Ken Jeong

"Wheel of Fortune" host Pat Sajak

Comedian Dane Cook

"Bachelor" host Chris Harrison

Celebrity blogger Perez Hilton

Dr. Mehmet Oz

PBS' Arthur

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