Penpulimab-kcqx is part of the PD-1/PD-L1 Inhibitors class and treats Nasopharyngeal Cancer. PD-1/PD-L1 Inhibitors are used to treat melanoma that has metastasized or that can't be surgically removed. They suppress a protein that can keep the immune system from recognizing and attacking cancer cells. Penpulimab-kcqx is only available as a brand name drug.