Abstract: A novel gene (designated 161P5C5) and its encoded protein, and variants thereof, are described wherein 161P5C5 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table 1. Consequently, 161P5C5 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 161P5C5 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 161P5C5 can be used in active or passive immunization.

Abstract: Described is a novel family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are exclusively or predominantly expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STRAP” Serpentine TRansmembrane Antigens of the Prostate). Four particular human STRAPs are described and characterized herein. The human STRAPs exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STRAP family, STRAP-1, appears to be a type IIIa membrane protein expressed predominantly in prostate cells in normal human tissues. Structurally, STRAP-1 is a 339 amino acid protein characterized by a molecular topology of six transmembrane domains and Intracellular N- and C-termini, suggesting that It folds In a “serpentine” manner Into three extracellular and two intracellular loops.

Abstract: A novel gene (designated 238P1B2) and its encoded protein, and variants thereof, are described wherein 238P1B2 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 238P1B2 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 238P1B2 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 238P1B2 can be used in active or passive immunization.

Abstract: A novel gene (designated 121P1F1) and its encoded protein, and variants thereof, are described wherein 121P1F1 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 121P1F1 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 121P1F1 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 121P1F1 can be used in active or passive immunization.

Abstract: Novel genes designated and set forth in FIG. 2 and their respective encoded proteins, and variants thereof, are described wherein a gene of the invention exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers such as those listed in Table I. Consequently, of gene products of a gene of FIG. 2 provide diagnostic, prognostic, prophylactic and/or therapeutic targets for cancer. A gene of FIG. 2 or fragment thereof, its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with a gene product of FIG. 2 can be used in active or passive immunization.

Abstract: A novel gene (designated 158P3D2) and its encoded protein, and variants thereof, are described wherein 158P3D2 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 158P3D2 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 158P3D2 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 158P3D2 can be used in active or passive immunization.

Abstract: A novel gene 0193P1E1B (also designated 193P1E1B) and its encoded protein, and variants thereof, are described wherein 193P1E1B exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 193P1E1B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 193P1E1B gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 193P1E1B can be used in active or passive immunization.

Abstract: A novel gene 0193P1E1B (also designated 193P1E1B) and its encoded protein, and variants thereof, are described wherein 193P1E1B exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 193P1E1B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 193P1E1B gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 193P1E1B can be used in active or passive immunization.

Abstract: Described is a novel family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are exclusively or predominantly expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STEAP” (SIX Transmembrane Epithelial Antigens of the Prostate). Four particular human STEAPs are described and characterized herein. The human STEAPs exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STEAP family, STEAP-1, appears to be a type IIIa membrane protein expressed predominantly in prostate cells in normal human tissues. Structurally, STEAP-1 is a 339 amino acid protein characterized by a molecular topology of six transmembrane domains and intracellular N- and C-termini, suggesting that it folds in a “serpentine” manner into three extracellular and two intracellular loops.

Abstract: A novel gene (designated 151P3D4) and its encoded protein, and variants thereof, are described wherein 151P3D4 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 151P3D4 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 151P3D4 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 151P3D4 can be used in active or passive immunization.

Abstract: A novel gene (designated 121P1F1) and its encoded protein, and variants thereof, are described wherein 121P1F1 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 121P1F1 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 121P1F1 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 121P1F1 can be used in active or passive immunization.

Abstract: A novel gene (designated PC-LECTIN) that is highly overexpressed in prostate cancer and its encoded protein is described. PC-LECTIN in normal human tissues is restricted to testis, but is highly expressed in prostate cancer. Consequently, PC-LECTIN provides a diagnostic and/or therapeutic target for prostate cancer.

Abstract: A novel gene (designated 193P1E1B) and its encoded protein, and variants thereof, are described wherein 193P1E1B exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 193P1E1B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 193P1E1B gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 191P1E1B can be used in active or passive immunization.

Abstract: A novel gene (designated 184P1E2) and its encoded protein, and variants thereof, are described wherein 184P1E2 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 184P1E2 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 184P1E2 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 184P1E2 can be used in active or passive immunization.

Abstract: Compositions for the diagnosis and therapy of prostate and colon cancer, derived from or based on a novel prostate-specific, androgen-regulated, cell membrane associated and secreted serine protease termed 20P1F12/TMPRSS2 are described. A full length cDNA comprising the entire coding sequence of the 20P1F12/TMPRSS2 gene (also designated 20P1F12-GTC1 herein) is provided (FIG. 1). Among the compositions provided are antibodies that bind to 20P1F12/TMPRSS2 proteins and polypeptide fragments thereof, including antibodies labeled with a detectable marker or toxin or therapeutic composition. The invention also provides prognostic and diagnostic methods of examining a biological sample for evidence of disregulated cellular growth by comparing the status of 20P1F12/TMPRSS2 in the biological sample to the status of 20P1F12/TMPRSS2 in a corresponding normal sample, wherein alterations in the status of 20P1F12/TMPRSS2 in the biological sample are associated with disregulated cellular growth.

Abstract: A gene (designated 161P2F10B) and its encoded protein are described wherein 161P2F10B exhibits tissue specific expression in normal adult tissue, it is aberrantly expressed in the cancers listed in Table I. Consequently, 161P2F10B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 161P2F10B gene or fragment thereof, or its encoded protein or a fragment thereof, can be used to elicit a humoral or cellular immune response.

Abstract: A novel gene (designated 84P2A9) and its encoded protein is described. While 84P2A9 exhibits prostate and testis specific expression in normal adult tissue, it is aberrantly expressed multiple cancers including prostate, testis, kidney, brain, bone, skin, ovarian, breast, pancreas, colon, lymphocytic and lung cancers. Consequently, 84P2A9 provides a diagnostic and/or therapeutic target for cancers, and the 84P2A9 gene or fragment thereof, or its encoded protein or a fragment thereof used to elicit an immune response.

Abstract: Described is a novel family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are exclusively or predominantly expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STEAP” (Six Transmembrane Epithelial Antigens of the Prostate). Four particular human STEAPs are described and characterized herein. The human STEAPs exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STEAP family, STEAP-1, appears to be a type IIIa membrane protein expressed predominantly in prostate cells in normal human tissues. Structurally, STEAP-1 is a 339 amino acid protein characterized by a molecular topology of six transmembrane domains and intracellular N- and C-termini, suggesting that it folds in a “serpentine” manner into three extracellular and two intracellular loops.

Abstract: Described is a gene and its encoded secreted tumor antigen, termed 36P6D5, and to diagnostic and therapeutic methods and compositions useful in the management of various cancers which express 36P6D5, particularly including cancers of the bladder, kidney, prostate, breast, colon, ovary, and pancreas.

Abstract: A novel gene (designated 85P1B3) and its encoded protein are described. While 85P1B3 exhibits tissue specific expression in normal adult tissue, it is aberrantly expressed in multiple cancers including set forth in Table 1. Consequently, 85P1B3 provides a diagnostic and/or therapeutic target for cancers. The 85P1B3 gene or fragment thereof, or its encoded protein or a fragment thereof, can be used to elicit an immune response.