When Ben Gadot’s brain tumor symptoms began in 2013, he was just 3 months old. The first sign was a visual change in his eyes.  

“It was as if he was always looking down,” says Cecilia Gadot, Ben’s mom. “We could see mostly just the white part of his eyes.”

When Cecilia and her husband, Raphael, took Ben to their pediatrician, they were referred to an ophthalmologist....