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Seven-year-old leukemia patient Ryan Jacoby is in desperate need of a bone marrow donor.

He has already defeated the disease once, but after a recurrence of cancer this month, he requires a life-saving bone marrow transplant.

But his family members are not a match, the family explains. And because Ryan is of both Vietnamese and Caucasian descent, finding an appropriate donor may prove difficult.

To sign up for Be The Match’s national bone marrow registry, visit join.bethematch.org.match4ryan. More information about Ryan’s case can be found on Facebook.com/Match4Ryan.