Update

By K.C. Baker

07/10/2014 at 11:30 AM EDT

Cindy Crawford and Chase Foley

Splash News Online; Courtesy Chase Foley

When Cindy Crawford found out about a 2-year-old boy with leukemia who needed a bone marrow transplant to save his life, she had to do something to help.

"I lost my little brother, Jeff, to leukemia when I was just 10 years old," Crawford, 48, tells PEOPLE. "Sadly, a bone marrow transplant wasn't an option for him then."

In 1974, when Crawford was 8 years old, Jeff was diagnosed with acute lymphoblastic leukemia. He was just 2 years old. At the time, she says, the deadly disease only had a 25 percent cure rate. After two years of experimental treatments, Jeff lost his battle, right before his 4th birthday.

The death of her brother, whom she describes as "one of the most influential people in my life," was devastating, says Crawford, who for years has been an advocate for bone marrow donation.

"But today," Crawford explains, "we have the chance to save the life of little Chase Foley and countless other children. We need your help to find him a bone marrow donor."

Read this article:
Cindy Crawford Is Helping a 2-Year-Old Boy Find a Bone Marrow Donor

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