Abstract: The disclosure provides a method of immunotherapy for a cancer patient, comprises administering vaccines against Globo series antigens (i.e., Globo H, Stage-specific embryonic antigen 3 “SSEA3” and Stage-specific embryonic antigen 4 “SSEA4”). Specifically, the method comprises administering Globo H-KLH (OBI-822) in patients with Metastatic Breast Cancer. The disclosure also provides a method of comprises selecting a cancer patient who is suitable as treatment candidate for immunotherapy. In addition, the disclosure provides therapeutic agents, including monoclonal antibodies (mAbs) that bind specifically to Globo series antigens and related biomarkers useful in focusing such therapeutic and diagnostic regimens.

Abstract: Disclosed is a method for identifying a subject at risk of developing a recurrent or metastatic cancer, comprising detecting PD-L1+ circulating tumor cells in a blood sample, a tissue fluid sample or a specimen of the subject. Also disclosed is method for treating a cancer comprising identifying a subject having one ore more PD-L1+ circulating tumor cells by detecting PD-L1+ circulating tumor cells in a blood sample, a tissue fluid sample or a specimen of the subject, and administering a treatment to the subject.

Abstract: The disclosure provides a method of immunotherapy for a cancer patient, comprises administering vaccines against Globo series antigens (i.e., Globo H, Stage-specific embryonic antigen 3 “SSEA3” and Stage-specific embryonic antigen 4 “SSEA4”). Specifically, the method comprises administering Globo H-KLH (OBI-822) in patients with Metastatic Breast Cancer. The disclosure also provides a method of comprises selecting a cancer patient who is suitable as treatment candidate for immunotherapy. In addition, the disclosure provides therapeutic agents, including monoclonal antibodies (mAbs) that bind specifically to Globo series antigens and related biomarkers useful in focusing such therapeutic and diagnostic regimens.