In an exploratory analysis of the KEYNOTE-361 phase 3 trial that tested immunotherapy and chemotherapy in advanced urothelial carcinoma, different early circulating tumor DNA (ctDNA) dynamics were observed between the two treatments, and ctDNA levels were associated with response to pembrolizumab but not to chemotherapy.
- Thomas Powles
- Yen-Hwa Chang
- Seyda Gunduz