Published: Jun 13, 2013 10:31 PM EDT
Updated: Jun 13, 2013 11:25 PM EDT

FORT MYERS, Fla. - A Fort Myers man is headed to Washington D.C. to advocate for children fighting cancer.

Rob Whan's son, Caleb passed away from leukemia in 2008, just 11 days after his 4th birthday. He and his wife founded Caleb's Crusade Against Childhood Cancer, which funds and supports local families.

Next week, he'll join more than 150 patients, survivors, and their families on Capitol Hill. They're asking Congress to support legislative changes that will allow better funding, research and treatment for children with cancer. 

"Obviously, it all comes down to funding for what we can do with research dollars that are out there," Whan said. "The thing that is different about childhood cancer in particular is, we don't really get the private sector money that adult cancers get because of the population."

This is Whan's fifth year traveling to Washington D.C. He'll average about seven meetings a day with lawmakers.