Astellas won for the world's first antibody medicine against a novel cancer antigen, claudin 18.2.

Astellas Pharma Inc. has obtained manufacturing and marketing authorisation in Japan for the world's first antibody medicine against a novel cancer antigen, claudin 18.2. Japan's major pharmaceutical companies have also caught up with international competition in the development of antibody drugs, although they are 30 years behind.
The competition to develop best-in-class antibody drugs for Claudin.18.2 has become a red ocean.
https://miyata-bio.net/column/0000331/