There is provided a chimeric antigen receptor (CAR) comprising a CD19-binding domain which comprises a) a heavy chain variable region (VH) having complementarity determining regions (CDRs) with the following sequences: CDR1—GY-AFSSS (SEQ ID No. 1); CDR2—YPGDED (SEQ ID No. 2) CDR3—SLLYGDYLDY (SEQ ID No. 3); and b) a light chain variable region (VL) having CDRs with the following sequences: CDR1—SASSSVSYMH (SEQ ID No. 4); CDR2—DTSKLAS (SEQ ID No. 5) CDR3—QQWNINPLT (SEQ ID No. 6). There is also provided a cell comprising such a CAR, and the use of such a cell in the treatment of cancer, in particular a B cell malignancy.

A novel human bladder cancer marker AG-CD71 and a monoclonal antibody ABC71 for preventing AG-CD71 are provided. The human bladder cancer marker AG-CD71 is an abnormal glycosylated transferrin receptor TFRC; the abnormal glycosylated transferrin receptor TFRC refers to the TFRC carrying a saccharide structure Fucal-4(GlcNAcbl-3)[6OSO3]GlcNAc as an epitope. Also provided is an antibody for the human bladder cancer marker AG-CD71; the antibody is the monoclonal antibody ABC71 specific for the human bladder cancer AG-CD71; the monoclonal antibody is secreted from the hybridoma cell strain the preservation number of which is CGMCC No. 14312.

A novel human bladder cancer marker AG-CD71 and a monoclonal antibody ABC71 for preventing AG-CD71 are provided. The human bladder cancer marker AG-CD71 is an abnormal glycosylated transferrin receptor TFRC; the abnormal glycosylated transferrin receptor TFRC refers to the TFRC carrying a saccharide structure Fucal-4(GlcNAcbl-3)[6OSO3]GlcNAc as an epitope. Also provided is an antibody for the human bladder cancer marker AG-CD71; the antibody is the monoclonal antibody ABC71 specific for the human bladder cancer AG-CD71; the monoclonal antibody is secreted from the hybridoma cell strain the preservation number of which is CGMCC No. 14312.

The present invention relates to a novel chimeric antigen receptor (CAR) comprising an antigen-binding fragment which binds specifically to PSMA antigen, and a method of manufacturing high-quality CAR T cell products by transfection and/or transduction of T cells therewith, which allows to effectively treat tumors in vivo alone or in combination with pharmaceutical drugs, such chemotherapies, biopharmaceutical drugs, such as antibodies, or small-molecule drugs, such as protein kinase inhibitors.

The present invention relates to an isolated T cell receptor (TCR) specific for a MAGEA1-derived peptide and to a polypeptide comprising a functional portion of the TCR. Further implicated are a multivalent TCR complex, a nucleic acid encoding a TCR, a cell expressing the TCR and a pharmaceutical composition comprising the TCR. The invention also refers to the TCR for use as a medicament, in particular to the TCR for use in the treatment of cancer.

Provided herein are target HLA-PEPTIDE antigens, e.g., HLA-PEPTIDE neoantigens and shared tumor HLA-PEPTIDE antigens, and antigen binding proteins (ABPs) that bind the target HLA-PEPTIDE antigens. Also disclosed are methods for identifying target HLA-PEPTIDE antigens as well as identifying one or more antigen binding proteins that bind a given HLA-PEPTIDE target antigen.

The present disclosure provides a composition, a combination product, a medical device and the like for treating or preventing cancer or a tumor or preventing the recurrence of the cancer or the tumor. The present disclosure provides a composition, a combination product and a medical device for treating or preventing cancer or a tumor or preventing the recurrence of the cancer or the tumor, each of which comprises an immune checkpoint inhibitor and a dendritic cell direct activator or means. In another aspect, the present disclosure provides: a novel cancer treatment method which comprises carrying out a treatment of cancer by employing a combination of a treatment by the administration of an immune checkpoint inhibitor and a treatment for improving the sensitivity to the immune checkpoint inhibitor and, therefore, can be used as an immunotherapy that can be expected to have an excellent therapeutic effect; and a medicine which can be used for the cancer treatment method.

The present disclosure provides methods for predicting and thereby treating cancer or increasing the efficacy of an anti-cancer medication, in part by measuring checkpoint proteins on extracellular vesicles released from non-cancer cells. These checkpoint proteins promote cancer progression and/or compensate for the loss of signal from the checkpoint proteins being inhibited by the checkpoint inhibitory therapy. Compositions and methods of treatment are also provided.

The present disclosure provides methods for predicting and thereby treating cancer or increasing the efficacy of an anti-cancer medication, in part by measuring checkpoint proteins on extracellular vesicles released from non-cancer cells. These checkpoint proteins promote cancer progression and/or compensate for the loss of signal from the checkpoint proteins being inhibited by the checkpoint inhibitory therapy. Compositions and methods of treatment are also provided.

Provided are antibodies, and fragments, derivatives, and nanoparticle conjugates thereof, particularly humanized derivatives thereof, which bind to tumor antigens. Also provided are nucleic acid molecules encoding chimeric antigen receptors (CARs) that bind to tumor antigens, polypeptides and CARs encoded by the nucleic acid molecules, vectors and host cells that include the nucleic acid molecules, methods of making the same, and methods for using the same to generate a persisting population of genetically engineered T cells in a subject, expanding a population of genetically engineered T cells in a subject, modulating the amount of cytokine secreted by a T cell, reducing the amount of activation-induced calcium influx into a T cell, providing an anti-tumor immunity to a subject, treating a mammal having a MUC1-associated disease or disorder, stimulating a T cell-mediated immune response to a target cell population or tissue in a subject, and imaging a MUC1-associated tumor.