ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,664, issued on July 22, was assigned to QUETZAL THERAPEUTICS LLC (Chicago).

"Lyophilized compositions comprising arsenic" was invented by Krishna Vaddi (Chadds Ford, Pa.) and Kumar Kurumaddali (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein are methods of treating malignancies such as tumors or cancers by orally administering lyophilized compositions comprising arsenic to a subject in need thereof. Malignancies include various hematological malignancies, such as acute myeloid leukemia (AML) including acute promyelocytic leukemia (APL), myelodysplastic syndrome (MDS), multiple myeloma (MM) and lymphomas, and solid tu...