Here is a refresher on the mechanism of action of
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Tumor's PD-L1 Upregulation
Unmasking the Mechanism
Remember, this 2nd mechanism of action would best be utilized in combination with subsequent treatment by a PD-1 blocker.
Don't forget that leronlimab has its own Primary Stand Alone mechanism of action as well, which has nothing to do with the upregulation of PD-L1 on tumor's CTC cells.

