PTK7 and neoplasm: PTK7, a catalytically inactive receptor tyrosine kinase, is significantly enriched in tumor‐initiating cells in TNBC, although its specific oncogenic roles remain elusive.[35] To elucidate PTK7's role in TNBC cell invasion, migration and proliferation, we utilized MedTACPTK7 to selectively degrade PTK7 in MDA‐MB‐468 cells.