In the Brief Report titled “Association of Prior Antibiotic Treatment With Survival and Response to Immune Checkpoint Inhibitor Therapy in Patients With Cancer,” which published online September 12, 2019, and in print in the December 2019 issue,1 there was an error in Table 2. The number of patients who received prior antibiotic therapy and had more than 2 metastases was 12 not 22. This article was corrected online.