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Zhihu Inc is predominantly engaged in the operation of one online content community and monetizes through paid membership services, advertising services, content-commerce solutions services, and vocational training in China. It generates revenues from Advertising services, Paid membership services, Content-commerce solutions, and Others. It derives all its revenues within China.
Checkpoint Therapeutics Inc is an immuno-oncology biopharmaceutical company based in the USA. It focuses on the acquisition, development, and commercialization of novel, non-chemotherapy, immune-enhanced combination treatments for patients with solid tumor cancers. Its licensed portfolio of antibodies includes targeting programmed cell death-ligand 1 (PD-L1), glucocorticoid-induced TNFR-related protein (GITR) and carbonic anhydrase IX (CAIX). The company is evaluating its small-molecule, targeted anti-cancer agent, olafertinib, a third-generation epidermal growth factor receptor (EGFR) inhibitor, as a potential new treatment for patients with EGFR mutation-positive non-small cell lung cancer.