Master Decoder: A Profile of Kári Stefánsson

A neurologist by training, Stefánsson founded Iceland-based deCODE Genetics to explore what the human genome can tell us about disease and our species’ evolution.

Written byAnna Azvolinsky
| 9 min read

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Kári Stefánsson remembers exactly where he was when he formulated the idea for his company, deCODE Genetics. It was 1995, and he had recently moved from the University of Chicago to Harvard University. “I was sitting in Starbucks at the Beth Israel Hospital, and I put together this narrative for identifying genetic variants of a large number of diseases using data from a large number of people and also figuring out the structure of a population,” he says. “I proposed to do this in Iceland because the Icelandic population has the advantage of having started from a small number of colonizing individuals,” leading to what’s called a “founder effect.” He reasoned that because of this founder effect, the number of disease-associated genetic variants would be relatively small for each individual disease, so they’d be easier to identify among people in Iceland.

Stefánsson was a seasoned molecular biology and protein biochemistry ...

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    Anna Azvolinsky received a PhD in molecular biology in November 2008 from Princeton University. Her graduate research focused on a genome-wide analyses of genomic integrity and DNA replication. She did a one-year post-doctoral fellowship at Memorial Sloan Kettering Cancer Center in New York City and then left academia to pursue science writing. She has been a freelance science writer since 2012, based in New York City.

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