Correction: PTEN Loss Contributes to Erlotinib Resistance in EGFR-Mutant Lung Cancer by Activation of Akt and EGFR

In this article (Cancer Res 2009;69:3256–61), which appeared in the April 15, 2009, issue of Cancer Research (1), there is an error in the legend of Fig. 2D. The legend should read as follows: D, analysis of EGFR mutations (red), and homozygous deletions of PTEN (blue), and PTEN mutations (black) in 140 lung cancer biopsy specimens.