Incorrect Data in the Abstract and a Figure Caption

In the Original Investigation titled “Analysis of Plasma Cell-Free DNA By Ultradeep Sequencing in Patients With Stages I to III Colorectal Cancer,” published online May 9 in JAMA Oncology,¹ errors occurred in the Abstract and a figure caption. In the Results portion of the Abstract, the numerator, denominator, and percentage were incorrect in the second sentence, which should have read as follows: “Preoperatively, ctDNA was detectable in 108 of 122 patients (88.5%).” In addition, the range for the mean time reported for circulating tumor DNA (ctDNA) was incorrect in the second sentence of Figure 3′s caption; the sentence should have read as follows: “The mean time from surgery to relapse detection was 5.5 months (range, 0.4-17.7 months) for ctDNA and 14.2 months (range, 5.9-31.1 months for CT).” This article was corrected online.