Shares of CStone Pharmaceuticals were up after Pfizer invested $200 million into the company for a nearly 10% stake to support the development of a checkpoint inhibitor aimed at the oncology market in China.

Vaccinex Inc. will pair the company’s lead asset pepinemab with Merck & Co.’s vaunted checkpoint inhibitor Keytruda.

The U.S. Food and Drug Administration approved Bristol Myers Squibb Co.’s combination therapy for previously untreated patients with a form of lung cancer, a much-needed boost as the company battles the dominance of Merck’s Keytruda.

The U.S. Food and Drug Administration approved the anti-PD-1 therapy Keytruda as a monotherapy for patients with recurrent locally advanced or metastatic squamous cell carcinoma of the esophagus whose tumors express PD-L1 with disease progression after one or more previous lines of systemic therapy.

Merck’s checkpoint inhibitor Keytruda (pembrolizumab) in combination with chemotherapy hit the primary endpoint in the company’s Phase III KEYNOTE-522 in triple-negative breast cancer.

With the books closed on another ASCO meeting, it’s clear to see that checkpoint inhibitors keep showing a promise.

EMD Serono and Pfizer announced that the U.S. FDA approved Bavencio (avelumab) in combination with Inlyta (axitinib) for the first-line treatment of patients with advanced renal cell carcinoma.

AstraZeneca’s immunotherapy drug Imfinzi was approved in Europe for use in lung cancer patients with inoperable disease that had advanced locally but not spread widely around the body.

The U.S. FDA granted approval for expanded use of AstraZeneca‘s immunotherapy drug Imfinzi to treat non-small cell lung cancer whose tumors can not be surgically removed.

Merck KGaA and Pfizer Inc. received a setback for their drug Bavencio, which is a late starter in the cancer immunotherapy field.