Nat. Biotechnol. 28, 131 (2010); published online 5 February 2010; corrected after print 7 June 2010

In the version of this article initially published, Art Levinson is incorrectly described as a founder of Genentech, Sandra Horning as senior vice president of global clinical development and Richard Scheller as chief of operations. Their titles should have read: CEO Arthur Levinson moved up to the board of directors.... Sandra Horning...took over as senior vice president, global head, clinical development, hematology/oncology. Executive vice president, research, Richard Scheller.... The errors have been corrected in the HTML and PDF versions of the article.