Jack Hoffman became a Nebraska legend in 2013, when the 7-year-old boy battling brain cancer rushed for a touchdown in the Huskers’ annual spring game. Now, Jack’s cancer is in remission, but his father, Andy Hoffman, had a heartbreaking announcement to share on Tuesday.

Andy announced on both Facebook and Twitter that he has been diagnosed with a “massive brain tumor.”

“After spending the last nine years helping my son with his fight with brain cancer, and many others, I have now learned first hand what these people have gone through,” Andy wrote on his Facebook page. “On Sunday, July 19, I had a seizure while running on the cowboy trail in Atkinson. A subsequent MRI revealed a massive brain tumor.”

He said he and his family are currently at the Mayo Clinic developing a “game plan.”

Andy founded Team Jack after his son’s run during the Nebraska spring game in 2013. The organization has raised more than $8.3 million towards pediatric cancer relief. That touchdown run also won an ESPY for “Best Moment.”