In the article on the NIS-mediated Uptake in Breast Cancer Metastases in the July 1, 2004 issue of Clinical Cancer Research, in the Dosimetric Calculation section, there was an error in estimating the cumulative radiation dose. The estimated cumulative radiation dose to the thyroid and whole body for 100 mCi of 131I was 333 and 15 cGy, respectively.

Wapnir IL, Goris M, Yudd A, et al: The Na+/I Symporter Mediates Iodide Uptake in Breast Cancer Metastases and Can Be Selectively Downregulated in the Thyroid. Clin Cancer Res 2004;10:4294–4302.