MSLN and neoplasm: Mesothelin is a 40-kDa cell surface glycoprotein [27] that is highly expressed in mesothelioma, pancreatic, ovarian, and other cancers but has limited expression in normal tissue, making it a promising target for tumor-specific therapy [28], including chimeric antigen receptor (CAR) T-cell therapy as detailed in a review by Klampatsa et al. [29].