Vismodegib Combined With Atezolizumab in Platinum Resistant Ovarian, Fallopian Tube, and Primary Peritoneal Cancer

A small-molecule SMO inhibitor designed to specifically target the hedgehog pathway, a known driver of BCC. It systemically inhibits hedgehog pathway signaling. Following mutation, SMO is released from the inhibitory effect of PTCH and moves to the cell surface, activating GLI. GLI travels to the nucleus and initiates transcription of target genes that regulate basal cell growth and proliferation.

Atezolizumab is a humanized monoclonal antibody immune checkpoint inhibitor that selectively binds to PD-L1 to stop the interaction between PD-1 and B7.1 (CD80 receptors). The antibody still allows interaction between PD-L2 and PD-1.