CDH17 and neoplasm: In the biodistribution study, the tumor uptake and tumor-to-blood ratios of 111In-D2101 increased over time, reaching their highest values of 39.2% ID/g and 6.4, respectively, at 96 h p.i. The uptake of CDH17-positive AGS xenografts was significantly higher than that of CDH17-negative MKN74 xenografts.