OMAHA, Neb. (AP) — The 8-year-old boy who became an Internet sensation for his touchdown run in Nebraska’s 2013 spring football scrimmage is now one of a handful of children enrolled in a cancer treatment trial.

Jack Hoffman is the fourth child enrolled in the clinical trial at Boston Children’s Hospital. He is one of 14 children in the world who have taken the medication, which is an adult cancer drug now being tested in children.

Jack’s family announced earlier this month that the boy’s brain cancer had returned after he had been declared in remission for less than a year.

Jack’s touchdown won an ESPY Award for best sports moment of 2013, and video of it has been viewed more than 8 million times on YouTube.