ERBB2 and pancreatic ductal adenocarcinoma: The authors have shown that [(HER2)2 × Vγ9] was more efficient than PAg at triggering the cytotoxic activity of circulating γδ T-cells against pancreatic ductal adenocarcinoma (PDAC) cell lines [122] as evidenced by a higher release of perforin and granzyme B. Moreover, [(HER2)2 × Vγ9] provoked less cell death induction in activated γδ T-cells lines than PAg, an interesting property in the perspective of adoptive transfer.