Group 1 - The core viewpoint of the article is that Hotgen Biotech has received authorization for a patent related to a small nucleic acid drug aimed at treating Alzheimer's disease [1] Group 2 - The patent is for "siRNA and its conjugates that inhibit APP gene expression" [1] - The patent is held by Beijing Yaojing Gene Technology Co., Ltd., a subsidiary of Hotgen Biotech [1]