Disclosed herein is a chimeric antigen receptor (CAR) comprising a single-chain variable fragment specific to Globo H, a hinge and transmembrane domain, a co-stimulatory molecule, and a cytoplasmic domain. According to some embodiments of the present disclosure, the CAR further comprises a single-chain variable fragment specific to PD-L1, and optionally, a fragment crystallizable region of an immunoglobulin. Also disclosed herein are isolated nucleic acids encoding the CAR pharmaceutical kits comprising the isolated immune cells expressing the CAR, and methods of treating cancers by using isolated immune cells.