Nat. Biotechnol. 26, 343–351 (2008); published online 24 February 2008; corrected after print 8 July 2008

In the version of this article initially published, on p.348, column 2, paragraph 2, line 7, the following sentence was incorrect: “Statins block the synthesis of cholesterol—a precursor to ubiquinone....” It should have read “Statins block the synthesis of mevalonate, a precursor not only of cholesterol but also ubiquinone, ....” The error has been corrected in the HTML and PDF versions of the article.