PHILIPSBURG, CENTRE COUNTY, Pa. (WTAJ) — A local teen is celebrating another major milestone.

On May 10, 2012, Emily Whitehead became the first pediatric patient in the world to undergo an experimental treatment for leukemia. She’s now celebrating her seven year anniversary being cancer free.

Since Emily’s treatment, the FDA has approved the therapy for leukemia and a type of lymphoma. It’s being tested in clinical trials to treat other cancers, as well