Grading of breast cancer
First Claim
1. A method to determine the grade of breast cancer cells in a sample from a human subject, said method comprisingassaying said sample for gene expression that is increased in grade III relative to grade I breast cancer, wherein said gene expression is assayed by synthesis of cDNA molecules from expressed RNA of the genesRACGAP1 (Rac GTPase activating protein 1, chromosomal location 12p13.2-p13.1),CENPA (centromere protein A (17kD), chromosomal location 2p24-p21),RRM2 (ribonucleotide reductase M2 polypeptide, chromosomal location 2p25-p24), andNEK2 (NIMA (never in mitosis gene a)-related kinase, chromosomal location 1q32.2-q41)in said sample;
- andcomparing the expression of the genes, via the cDNA molecules, to the expression of said genes in reference samples of known human grade III breast cancer; and
identifying said sample as containing grade III breast cancer cells.
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Abstract
Methods and compositions for the identification of breast cancer grade signatures are provided. The signature profiles are identified based upon multiple sampling of reference breast tissue samples from independent cases of breast cancer and provide a reliable set of molecular criteria for identification of cells as being in one or more particular stages and/or grades of breast cancer.
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Citations
20 Claims
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1. A method to determine the grade of breast cancer cells in a sample from a human subject, said method comprising
assaying said sample for gene expression that is increased in grade III relative to grade I breast cancer, wherein said gene expression is assayed by synthesis of cDNA molecules from expressed RNA of the genes RACGAP1 (Rac GTPase activating protein 1, chromosomal location 12p13.2-p13.1), CENPA (centromere protein A (17kD), chromosomal location 2p24-p21), RRM2 (ribonucleotide reductase M2 polypeptide, chromosomal location 2p25-p24), and NEK2 (NIMA (never in mitosis gene a)-related kinase, chromosomal location 1q32.2-q41) in said sample; - and
comparing the expression of the genes, via the cDNA molecules, to the expression of said genes in reference samples of known human grade III breast cancer; and identifying said sample as containing grade III breast cancer cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 17, 18)
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8. A method to determine the grade of breast cancer cells in a sample from a human subject, said method comprising
assaying said sample for gene expression that is decreased in grade I relative to grade III breast cancer, wherein said gene expression is assayed by synthesis of cDNA molecules from expressed RNA of the genes of RACGAP1 (Rac GTPase activating protein 1, chromosomal location 12p13.2-p13.1), CENPA (centromere protein A (17kD), chromosomal location 2p24-p21), RRM2 (ribonucleotide reductase M2 polypeptide, chromosomal location 2p25-p24), and NEK2 (NIMA (never in mitosis gene a)-related kinase, chromosomal location 1q32.2-q41) in said sample; - and
comparing the expression of the genes, via the cDNA molecules, to the expression of said genes in reference samples of known human grade I breast cancer; and identifying said sample as containing grade I breast cancer cells. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16, 19, 20)
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Specification