IL15 and ovarian cancer: MSLN.CAR-IL-15 iNK displayed the highest killing ability against all the tumor cells we tested (pancreatic cancer KLM-1, mesothelioma NCI-meso29, NCI-meso21, NCI-meso63, ovarian cancer OVCAR8, and gastric carcinoma cell line NCI-N87), as compared to mock iNK and MSLN.CAR iNK (Fig. 4, A and B).