ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,259, issued on March 11, was assigned to The Chinese University of Hong Kong (New Territories, Hong Kong) and GRAIL Inc. (Menlo Park, Calif.).

"Using nucleic acid size range for noninvasive cancer detection" was invented by Yuk-Ming Dennis Lo (Homantin, China), Rossa Wai Kwun Chiu (Shatin, China), Kwan Chee Chan (Mei Foo Sun Chuen, China) and Peiyong Jiang (Pak Shek Kok, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Size-band analysis is used to determine whether a chromosomal region exhibits a copy number aberration or an epigenetic alteration. Multiple size ranges may be analyzed instead of focusing on specific sizes. By using multiple siz...