ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,534, issued on Feb. 24, was assigned to CSPC MEGALITH BIOPHARMACEUTICAL Co. LTD. (Hebei, China).

"Modified IL-2 proteins, peg conjugates, and uses thereof" was invented by Zhe Yan (Sacramenta, Calif.), Lixin Feng (Sacramenta, Calif.) and Yingui Li (Sacramenta, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides a modified interleukin-2 (IL-2) protein comprising an engineered glutamine (Q) residue. The present application also provides a modified IL-2 protein-polyethylene glycol (PEG) conjugate comprising a modified IL-2 protein comprising an engineered Q residue and a PEG moiety, wherein the PEG moiety is conjugate...