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There are multiple factors that play a part in finding a stem cell match from a public bank.
From our friends at Be the Match, "Research has found that a donor must match a minimum of 6 HLA markers. Many times a closer match is required. The best match is found through detailed testing. Because some HLA types are more common than others, some patients may face a greater challenge in finding a matching donor. Some HLA types are found more often in certain racial and ethnic groups.
"A close match between a donor’s and a patient’s HLA markers is essential for a successful transplant outcome. HLA matching promotes the growth and development of new healthy blood cells (called engraftment) and reduces the risk of a post-transplant complication called graft-versus-host (GVHD) disease."
Your odds of finding a donor match based on ethnic background are as follows: