Correction: Increased Frequency of ICOS⁺ CD4 T Cells as a Pharmacodynamic Biomarker for Anti-CTLA-4 Therapy Free

In this article (Cancer Immunol Res 2013;1:229–34), which was published in the October 2013 issue of Cancer Immunology Research (1), the grant support is listed incorrectly. It should read as follows: “The work of P. Sharma, J.D. Wolchok, and J.P. Allison is supported by a Stand Up To Cancer – Cancer Research Institute Cancer Immunology Translational Cancer Research Grant (SU2C-AACR-DT1012). Stand Up To Cancer is a program of the Entertainment Industry Foundation administered by the American Association for Cancer Research.” The publisher regrets this error.