3 Doors Down singer Brad Arnold says he has stage 4 cancer, cancels summer tour

Brad Arnold, lead singer of American rock band 3 Doors Down, has been diagnosed with stage four cancer and is cancelling the band's upcoming tour, he announced in an Instagram post on Wednesday.

Brad Arnold, lead singer of American rock band 3 Doors Down, has been diagnosed with stage four cancer and is cancelling the band's upcoming tour, he announced in an Instagram post on Wednesday.

"I had been sick a couple of weeks ago and went to the hospital and got checked out, and actually got the diagnosis that I had clear cell renal carcinoma that had metastasized into my lung," the 46-year-old rock vocalist said in a video. "It's stage four, and that's not real good."

The band rose to fame in early 2000 when their hit song “Kryptonite” charted third on the Billboard Hot 100. They were set to tour this summer with fellow '90s/2000s rockers Creed, Nickelback and Daughtry.

The “Here Without You” singer apologized for the cancelled tour, but assured fans he is not fearful of his diagnosis, relying on his strong faith.

"We serve a mighty God and he can overcome anything, so I have no fear," Arnold said. "I really, sincerely am not scared of it at all."