At age 3 months, Greta was diagnosed with a rare form of leukemia and needed a bone marrow transplant, which was successful but led to complications. Three months later, Greta relapsed, and her parents, who live in Portland, found a Stand Up To Cancer – St. Baldrick’s Pediatric Cancer Dream Team clinical trial at Seattle Children’s that was accepting babies. The study involved collecting and growing Greta’s T cells, then reintroducing them into her bloodstream. Greta had the T cell infusion in August 2014. Four years after her successful treatment, Greta started kindergarten.