PTK2 and neoplasm: When tested against 16 protein kinases involved in the regulation of tumor growth and metastasis, P03F03 inhibited anaplastic lymphoma kinase (ALK), focal adhesion kinase (FAK), insulin like growth factor (IGF11-R), proto-oncogene SRC, and vascular endothelial growth factor (VEGF-R2 R2) [13].