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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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Since the first human genome sequence was published, thousands of people have submitted their DNA for scientific analysis.

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They made these donations anonymously--or so they thought.

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Now, using publicly available information, researchers found they could figure out the identities of 50 individuals who had loaned their genes to science.

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Their results, although not the names of the people, are in the journal Science.

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Biomedical research depends on human subjects, and issues of privacy have always been a concern.

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When scientists share genomic data, they first strip away identifying information, like the individual's name and date of birth.

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But is that really enough?

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Researchers looked at a specific set of markers in genomes whose sequences were in a public database.

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And they found that by matching up these markers with sequences that people had submitted to genealogy web sites,

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they could identify some of the genome donors' relatives, then with a bit more sleuthing, come up with their actual names.

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Of course, many people now post online accounts of what's on their minds or even on their menus.

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But even those who are relatively relaxed about their privacy might think twice about their genomes going public.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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