When 4-year-old Monroe Peterson was diagnosed with cancer, her family was determined to not only rally around her in support but also wanted to make a difference for other patients and families going through a similar experience.

To honor her journey, in November 2024 Monroe’s father, fitness expert and celebrity trainer Gunnar Peterson, started the MVP Challenge on his app, Common Ground, to raise awareness and funds for pediatric cancer efforts at Monroe Carell Jr. Children’s Hospital at Vanderbilt.

The MVP Challenge, named for Monroe Vivian Peterson, included four weeks of guided workouts, question and answer sessions with Gunnar, and an opportunity to win special prizes. The fitness challenge raised funds to support pediatric cancer research, training and care at Monroe Carell.

“For months, Monroe has faced this battle with more grit, determination and positivity than I’ve ever seen,” said Peterson. “She hasn’t backed down; she doesn’t quit; and she moves forward with a smile on her face every day. To honor her strength, we launched the MVP Challenge as a way to come together as a community, push ourselves and raise funds to support children’s cancer treatment and research.”

Monroe was diagnosed with acute myeloid leukemia and completed two rounds of chemotherapy. She received two bone marrow transplants, one from each of her older brothers, and she is now in remission.

During her treatment, Monroe’s family says that she brought positivity, joy and levity to those around her and earned the nickname MVP. Many family members, friends and community members came together in support of the challenge to make it a success.

“We are blown away by the incredible success of the MVP Challenge and know that it would not have been possible without the advocacy, outreach and community engagement work of Gunnar, Jess and the whole Peterson family,” said Debra Friedman, MD, MS, director of the Division of Pediatric Hematology and Oncology at Monroe Carell, deputy director of Vanderbilt-Ingram Cancer Center, and holder of the E. Bronson Ingram Chair in Pediatric Oncology. “This challenge was a wonderful way to honor Monroe’s journey and tenacious spirit.”

Funds raised from the MVP Challenge will support Monroe Carell’s vision to advance personalized pediatric, adolescent and young adult cancer care in the region, specifically leukemia and stem cell research.

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