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Inhibrx said Tuesday that its experimental immunotherapy targeting a protein called OX40 showed responses in patients with head and neck cancer. But the most striking results were in a small subset of patients with HPV-positive tumors, which could significantly limit the drug’s use.
The results are notable as a legion of drugmakers — including Pfizer, Genentech, GSK, and AstraZeneca — previously tried and failed to use OX40 as a weapon against tumors over the past 15 years.
“It’s just really gratifying for us,” said CEO Mark Lappe. “Pushing this is like a rock up a hill, because there’s been so much failure in the space.”



