Figure 6. Model of PCDH7-mediated activation of MAPK signaling in lung tumorigenesis.
When overexpressed in lung cancer, PCDH7 interacts with SET and PP2A and facilitates inhibitory PP2A-SET interaction, thereby potentiating MAPK-ERK signaling in cooperation with oncogenic drivers such as KRAS or EGFR (depicted as a receptor tyrosine kinase, RTK).