Langer CJ. Exploring biomarkers in head and neck cancer. Cancer 2012;118:3882–3892.

On the sixth page, the last sentence of the first paragraph has been corrected as follows:

Interestingly, heavy smoking status (≥10 pack-years) seemed to negate partially the benefit conferred by an HPV-positive tumor status; compared with HPV-positive/<10 pack-year patients, HPV-positive/≥10 pack-year patients had an OS HR of 1.91 (95% confidence interval [CI], 1.20-3.05); for HPV-negative/<10 pack-year subjects OS HR was 2.25 (95% CI, 1.44-3.50), and for HPV-negative/≥10 pack-year subjects OS HR was 4.30 (95% CI, 2.40-7.71).42

The author regrets these errors.