Abstract: Methods and compositions relating to anti-CD22 antibodies with high binding affinity, and immunoconjugates comprising the anti-CD22 antibody linked to a therapeutic agent such as a Pseudomonas exotoxin or a detectable label. The invention provides diagnostic methods, and means to inhibit the growth of malignant B cells.

Abstract: The present invention provides methods for the treatment of acute lymphoblastic leukemia (ALL) in pediatric patients using an anti-CD22 immunotoxin. The methods disclosed comprise administering to a pediatric patient in need of that treatment an effective dose of a recombinant immunotoxin comprising a variable light (VL) chain linked to a variable heavy (VH) which is genetically fused to a therapeutic moiety comprising a Pseudomonas exotoxin A PE38 fragment. The recombinant immunotoxin specifically binds CD22 thereby inhibiting the growth of CD22-expressing (CD22+) ALL cancer cells.

Abstract: Recombinant immunotoxins are fusion proteins composed of the Fv domains of antibodies fused to bacterial or plant toxins. RFB4 (Fv)-PE38 is an immunotoxin that targets CD22 expressed on B cells and B cell malignancies. The present invention provides antibodies and antibody fragments that have improved ability to bind the CD22 antigen of B cells and B cell malignancies compared to RFB4. Immunotoxins made with the antibodies and antibody fragments of the invention have improved cytotoxicity to CD22-expressing cancer cells. Compositions that incorporate these antibodies into chimeric immunotoxin molecules that can be used in medicaments and methods for inhibiting the growth and proliferation of leukemia and lymphoma cells.

Abstract: The invention provides a peptide comprising a human cytolytic T lymphocyte (CTL) epitope from the human tumor-associated antigen (TAA) New Gene Expressed in Prostate (NGEP), which can be used in vaccine prevention or therapy of prostate cancer, as well as a nucleic acid encoding the peptide, a vector comprising the nucleic acid, a cell comprising the peptide, nucleic acid, or vector, and compositions thereof.

Abstract: The present invention provides mesothelin peptide fragments corresponding to the CA125 binding site of mesothelin. The peptide fragments find use in disrupting the binding interaction between mesothelin and CA 125, for example, in the treatment and prevention of cancers that require the interaction of mesothelin and CA125 for growth, progression and/or metastasis.

Abstract: The present invention provides monoclonal anti-mesothelin antibodies and antibody fragments and methods for their use. The antibodies can be completely human.

Abstract: The present invention provides methods for the treatment of acute lymphoblastic leukemia (ALL) in pediatric patients using an anti-CD22 immunotoxin. The methods disclosed comprise administering to a pediatric patient in need of that treatment an effective dose of a recombinant immunotoxin comprising a variable light (VL) chain linked to a variable heavy (VH) which is genetically fused to a therapeutic moiety comprising a Pseudomonas exotoxin A PE38 fragment. The recombinant immunotoxin specifically binds CD22 thereby inhibiting the growth of CD22-expressing (CD22+) ALL cancer cells.

Abstract: The present invention provides monoclonal anti-mesothelin antibodies and antibody fragments and methods for their use. The antibodies can be completely human.

Abstract: The invention provides a peptide comprising a human cytolytic T lymphocyte (CTL) epitope from the human tumor-associated antigen (TAA) New Gene Expressed in Prostate (NGEP), which can be used in vaccine prevention or therapy of prostate cancer, as well as a nucleic acid encoding the peptide, a vector comprising the nucleic acid, a cell comprising the peptide, nucleic acid, or vector, and compositions thereof.

Abstract: Immunogenic T-cell receptor gamma Alternate Reading Frame Protein (TARP) polypeptides are disclosed herein. These immunogenic TARP polypeptides include nine consecutive amino acids of the amino acid sequence set forth as SEQ ID NO: 9 and do not comprise amino acids 1-26 or amino acids 38-58 of SEQ ID NO: 1. Several specific, non-limiting examples of these polypeptides are set forth as SEQ ID NOs: 3-7. Nucleic acids encoding these polypeptides, and host cells transfected with these nucleic acids, are also disclosed. Methods of using these polypeptides, and polynucleotides encoding these polypeptides, for the treatment of breast and prostate cancer are also disclosed.

Abstract: The present invention provides mesothelin peptide fragments corresponding to the CA125 binding site of mesothelin. The peptide fragments find use in disrupting the binding interaction between mesothelin and CA 125, for example, in the treatment and prevention of cancers that require the interaction of mesothelin and CA125 for growth, progression and/or metastasis.

Abstract: Antibodies that specifically bind the extracellular domain of IRTA2 are disclosed herein. In one embodiment, these antibodies do not specifically bind IRTA1, IRTA3, IRTA4, or IRTA5. In one example, the antibodies are humanized antibodies. The antibodies can be conjugated to effector molecules, including detectable labels, radionucleotides, toxins and chemotherapeutic agents. The antibodies that specifically bind IRTA2 are of use to detect B cell malignancies, such as hairy cell leukemia and non-Hodgkin's lymphoma. These antibodies that specifically bind IRTA2 are also of use to treat B cell malignancies that express IRTA2, such as hairy cell leukemia and non-Hodgkin's lymphoma.

Abstract: Recombinant immunotoxins are fusion proteins composed of the Fv domains of antibodies fused to bacterial or plant toxins. RFB4 (Fv)-PE38 is an immunotoxin that targets CD22 expressed on B cells and B cell malignancies. The present invention provides antibodies and antibody fragments that have improved ability to bind the CD22 antigen of B cells and B cell malignancies compared to RFB4. Immunotoxins made with the antibodies and antibody fragments of the invention have improved cytotoxicity to CD22-expressing cancer cells. Compositions that incorporate these antibodies into chimeric immunotoxin molecules that can be used in medicaments and methods for inhibiting the growth and proliferation of leukemia and lymphoma cells.

Abstract: A polypeptide is disclosed that is specifically detected in the cells of the prostate, termed Splice Variant-Novel Gene Expressed in Prostate (SV-NGEP). Polynucleotides encoding SV-NGEP are also disclosed, as are vectors including these polynucleotides. Host cells transformed with these polynucleotides are also disclosed. Antibodies and immunoconjugates are disclosed that specifically bind SV-NGEP. Methods are disclosed for using an NGEP polypeptide, an antibody that specifically binds SV-NGEP, or a polynucleotide encoding SV-NGEP. Assays are disclosed for the detection prostate cancer. Pharmaceutical compositions including an SV-NGEP polypeptide, an antibody that specifically binds SV-NGEP, or a polynucleotide encoding SV-NGEP are also disclosed. These pharmaceutical compositions are of use in the treatment of prostate cancer.

Abstract: Methods and compositions relating to anti-CD22 antibodies with high binding affinity, and immunoconjugates comprising the anti-CD22 antibody linked to a therapeutic agent such as a Pseudomonas exotoxin or a detectable label. The invention provides diagnostic methods, and means to inhibit the growth of malignant B cells.

Abstract: This invention relates to the discovery of a differentiation antigen termed mesothelin which is associated with mesotheliomas and ovarian cancers. Mesothelin is about 69 kD in its full-length form. The invention includes uses for the amino acid and nucleic acid sequences for mesothelin, recombinant cells expressing it, methods for targeting and/or inhibiting the growth of cells bearing mesothelin, methods for detecting the antigen and its expression level as an indication of the presence of tumor cells, and kits for such detection.

Abstract: Immunogenic T-cell receptor gamma Alternate Reading Frame Protein (TARP) polypeptides are disclosed herein. These immunogenic TARP polypeptides include nine consecutive amino acids of the amino acid sequence set forth as SEQ ID NO: 9 and do not comprise amino acids 1-26 or amino acids 38-58 of SEQ ID NO: 1. Several specific, non-limiting examples of these polypeptides are set forth as SEQ ID NOs: 3-7. Nucleic acids encoding these polypeptides, and host cells transfected with these nucleic acids, are also disclosed. Methods of using these polypeptides, and polynucleotides encoding these polypeptides, for the treatment of breast and prostate cancer are also disclosed.

Abstract: A polypeptide is disclosed that is specifically detected in the cells of the prostate, termed Splice Variant-Novel Gene Expressed in Prostate (SV-NGEP). Polynucleotides encoding SV-NGEP are also disclosed, as are vectors including these polynucleotides. Host cells transformed with these polynucleotides are also disclosed. Antibodies and immunoconjugages are disclosed that specifically bind SV-NGEP. Methods are disclosed for using an NGEP polypeptide, an antibody that specifically binds SV-NGEP, or a polynucleotide encoding SV-NGEP. Assays are disclosed for the detection of prostate cancer. Pharmaceutical compositions including an SV-NGEP polypeptide, an antibody that specifically binds SV-NEGP, or a polynucleotide encoding SV-NGEP are also disclosed. These pharmaceutical compositions are of use in the treatment of prostate cancer.

Abstract: Methods and compositions relating to recombinant anti-CD22 antibodies with high binding affinity, and immunoconjugates comprising the anti-CD22 antibody linked to a therapeutic agent such as a Pseudomonas exotoxin or a detectable label. The invention provides diagnostic methods, and means to inhibit the growth of malignant B cells.

Abstract: Immunogenic T-cell receptor gamma Alternate Reading Frame Protein (TARP) polypeptides are disclosed herein. These immunogenic TARP polypeptides include nine consecutive amino acids of the amino acid sequence set forth as SEQ ID NO: 9 and do not comprise amino acids 1-26 or amino acids 38-58 of SEQ ID NO: 1. Several specific, non-limiting examples of these polypeptides are set forth as SEQ ID NOs: 3-7. Nucleic acids encoding these polypeptides, and host cells transfected with these nucleic acids, are also disclosed. Methods of using these polypeptides, and polynucleotides encoding these polypeptides, for the treatment of breast and prostate cancer are also disclosed.