Preliminary data from the first-in-human phase I trial of RO7623066—a first-in-class inhibitor of ubiquitin-specific peptidase 1—show a promising safety profile as a single agent and signs of early anti-tumor activity for patients with advanced solid tumors. The data were presented by Timothy Yap, professor of investigational cancer therapeutics and vice president and head of clinical development in MD Anderson’s Therapeutics Discovery division, at the 2024 American Society of Clinical Oncology Annual Meeting.
Rezatapopt monotherapy generated a 33% overall response rate in 97 patients with solid tumors spanning across eight different cancers (ovarian, lung, breast, endometrial, head and neck, colorectal, gallbladder, and ampullary carcinoma) and a median duration of response of 6.2 months, according to PYNNACLE phase II clinical trial interim data. These were patients whose tumors were TP53 Y220C mutated and KRAS wild-type.
