Incorrect Email Address for Corresponding Author

In the Research Letter titled “Breast Cancer With a Poor Prognosis Diagnosed After Screening Mammography With Negative Results,” published online May 3, 2018, and in this issue of JAMA Oncology,¹ Dr McCarthy’s email address was incorrect. In the Corresponding Author portion of the Article Information section, her email address should have been listed as “amccarthy8@partners.org.” This article was corrected online.