Bachovchin does it again!10 Oct 2025 18:04
US20250108031A1, Fap-activated therapeutic agents, and uses related thereto, https://patents.google.com/patent/US20250108031A1
Abstract: Disclosed are prodrugs of cytotoxic anthracyclines (such as doxorubicin) and other therapeutic agents that are selectively cleaved and activated by fibroblast activating protein (FAP). The prodrugs are useful for targeted delivery of cytotoxic and other agents to FAP-expressing tissues, including cancer (e.g., solid tumors). Also provided are pharmaceutical compounds comprising the prodrugs, as well as methods of using the prodrugs to treat a disorder characterized by FAP upregulation, e.g., cancer, fibrosis, and inflammation.
Application filed September 2024, mention of self-immolative linker and anticancers classes including topoisomerase inhibitors.
PDF of that US patent: https://patentimages.storage.googleapis.com/c3/f0/8b/8e8325ef9bf123/US20250108031A1.pdf
This is not the patent for AVA6103 (FAP-EXd) but it has certain features that are incorporated within AVA6103. Makes me wonder how much of AVA6103 is Avacta's work and how much is Bachovchin's.