Born with congenital kidney failure, Zachary Elsenpeter faced a lifetime of medical complications.
He had his first kidney transplant, from his father, as an infant. But by age 5, his body began to reject it. A buildup of antibodies fighting the kidney gave him only a 3 percent chance of finding a perfect match for a new organ.
Zachary was put on a list of more than 100,000 people waiting for a kidney. His mother, Stacey Elsenpeter, felt helpless.
"It's the worst feeling ever as a parent," Stacey said. "Just watching him get sicker and sicker and there's nothing I can do but pray someone's going to come forward to donate."
Stacey wanted to donate her kidney to him, but she wasn't a match for her son.
That didn't stop her from getting proactive: She signed up for the Paired Exchange Program at the University of Minnesota Health.
"I said, 'I'm not taking that 3 percent,' " Stacey said.
She wrote an e-mail to a favorite television celebrity that she hoped would change the family's fortunes. Years later, it did.