According to recently published work in Nature, the Cancer Genome Atlas has revealed that many tumors are heterogeneous. More mutations might mean more drug targets, says Derek Lowe, but that's not necessarily a good thing, he writes at In the Pipeline.

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The Atlantic reports that genetic counselors are coping with an influx of patients seeking advice on their direct-to-consumer genetic test results.

A small study finds differences between three genomic prostate cancer tests, Medscape reports.

In Nature this week: shared genetic architecture for asthma and allergic diseases, and more.

A survey of Canadians finds them to be divided on genetically modified food, the Ottawa Citizen reports.