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Doctors previously thought that 90 percent of all DiGeorge patients had the same 22Q deletion. Dr. Markert, who has the largest sampling of DiGeorge Patients ever, has found that about half of her patients have this gene deletion. My husband and I have no such gene deletion. In fact, we have no known genetic issues. Birth defects are not all caused by genetics, many have to do with environs. And those that are genetic are often unique/spontaneous in the particular generation that they first appear.[Edited on September 16, 2008 at 12:30 AM. Reason : .]
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