PTK2 and neoplasm: IFNγ signalling plays an important role in promoting T-cell tumour recognition,16 and IFNγ is secreted by multiple cell types present within the tumour microenvironment (TME).17 We, therefore, sought to determine whether IFNγ was present within the TME of FAK-wt and FAK-/- tumours, and whether FAK deletion altered the response of PDAC cells to this important proinflammatory cytokine.