It was developed and tested in China by Innovent Biologics, which entered into an agreement with Eli Lilly that would have allowed Lilly to market it in the United States, if it were approved.... The decision is likely to be closely monitored for clues about whether it further exacerbates tensions between the United States and China, especially given the strains between the two countries over research by Chinese scientists in recent years.... Immunotherapy drugs are so expensive in the United