Biomarkers for Monitoring Impdh Pathway Inhibition

1 - 9 . (canceled)

10 . A nucleic acid array of comprising at least 4 distinct nucleic acid sequences selected from the group consisting of the polynucleotides listed in any one of Gene Tables I, V, VI, VII or Table IV, immobilized on a surface at discrete and known positions, wherein said nucleic acids hybridize to nucleic acids in a sample of a subject that are either up-regulated or down-regulated in response to inhibition of IMPDH.

11 - 13 . (canceled)

14 . The nucleic acid array of claim 10 , wherein the surface is selected from the group consisting of a metal, silicon, a polymer plastic, paper, ceramic, quartz, gallium arsenide, metal, metalloid, cellulose, celluose acetate, nitrocellulose, and a glass.

15 . (canceled)

16 . The nucleic acid array of claim 10 , further comprising at least one control spot consisting of one or more nucleic acids that are known not to be modulated with IMPDH inhibition.

17 . (canceled)

18 . The nucleic acid array of claim 10 , wherein said surface comprises a plurality of microarrays separated from each other with a hydrophobic polymer strip.

19 . (canceled)

20 . A set of polynucleotides for use in the detection of IMPDH inhibition, wherein said polynucleotides hybridize to 4 to 314 genes selected from the group consisting of the genes set forth in any one or more of Gene Table I, Gene Table II, Gene Table III, Gene Table IV, Gene Table V, Gene Table VI, Gene Table VII and Gene Table VIII wherein the expression of each said polynucleotides is either up- or down-regulated in response to inhibition of IMPDH.

21 - 26 . (canceled)

27 . A method for predicting whether a candidate IMPDH inhibitory agent will produce a therapeutic effect in a subject comprising: contacting a biological sample from said subject with said candidate IMPDH inhibitory agent and determining the expression level in said biological sample of four or more prognostic genes selected from the group consisting of the genes set forth in one or more of Gene Table I, Gene Table II, Gene Table III, Gene Table IV, Gene Table V, Gene Table VI, Gene Table VII and Gene Table VIII, wherein a modulation of the expression level of the four or more of genes is similar to the modulation resulting from contacting the biological sample with VX-944 and is indicative that said agent is a therapeutically effective IMPDH inhibitory agent.

28 - 29 . (canceled)

30 . The method of claim 27 , wherein said subject is human.

31 . The method of claim 27 , wherein said biological sample is a sample from a cancer patient, and wherein said cancer is selected from the group consisting of breast cancer, ovarian cancer, gastric cancer, colorectal cancer, prostate cancer, pancreatic cancer, and lung cancer.

32 . The method of claim 27 , wherein the modulation of expression in response to said candidate IMPDH inhibitory agent is similar to the modulation in expression seen in response to contacting said biological sample with VX-944.

33 . The method of claim 27 , wherein said biological sample is a tissue sample comprising cancer cells.

34 . The method of claim 27 , wherein said tissue is fixed, paraffin-embedded, fresh, or frozen.

35 . The method of claim 34 , where the tissue is from a biopsy.

36 . (canceled)

37 . The method of claim 27 , wherein the expression level of said prognostic genes is determined by PCR, immunohistochemistry or in situ hybridization.

38 - 39 . (canceled)

40 . The method of claim 27 , wherein the assay for the measurement of said prognostic genes or their expression products is provided in the form of a kit or kits.

41 . A method of preparing a prognostic profile for a subject's response to an IMPDH inhibitor comprising the steps of:

(a) exposing ex vivo cells of said subject to an IMPDH inhibitor;

(b) subjecting RNA extracted from the cells of step (a) to gene expression profiling;

(c) determining the expression levels of at least four genes selected from the group consisting of the genes set forth in one or more of Gene Table I, Gene Table II, Gene Table III, Gene Table IV, Gene Table V, Gene Table VI, Gene Table VII and Gene Table VIII in said cells; and

(d) comparing the expression levels obtained in step (c) to expression levels obtained in the absence of said IMPDH inhibitor, wherein a modulation of the expression level of said four or more of genes in response to said IMPDH inhibitor indicates that said subject is likely to be responsive to said inhibitor.

42 . A method of preparing a prognostic profile for a subject's response to an IMPDH inhibitor comprising the steps of:

(a) administering an IMPDH inhibitor to said subject;

(b) subjecting RNA extracted from cells of said subject to gene expression profiling;

(c) determining the expression level of at least four genes selected from the group consisting of the genes set forth in one or more of Gene Table I, Gene Table II, Gene Table III, Gene Table IV, Gene Table V, Gene Table VI, Gene Table VII and Gene Table VIII in said cells of said subject; and

(d) comparing the expression levels obtained in step (c) to expression levels obtained in the absence of said IMPDH inhibitor, wherein a modulation of the expression level of said four or more of genes in response to said IMPDH inhibitor administration indicates that said IMPDH inhibitor will likely predict the subject's response to said IMPDH inhibitor administration.

43 . (canceled)

44 . The method of claim 41 or 42 wherein said cells are cancer cells obtained from said subject.

45 . The method of claim 44 , wherein said cancer cells are selected from the group consisting of breast cancer cells, ovarian cancer cells, hematological cancer cells, gastric cancer cells, colorectal cancer cells, pancreatic cancer cells, and lung cancer cells.

46 - 48 . (canceled)

49 . The method of claim 41 or 42 wherein said expression profile is compiled into a report that includes recommendation for a treatment for said subject with an IMPDH inhibitor.

50 . The method of claim 41 or 42 wherein if altered expression of one or more of the genes selected from the genes set forth in Gene Tables 1 , II, III, IV, V, VI, VII, and VIII, or a corresponding expression product is determined, said report includes a prediction that said subject is a suitable candidate for IMPDH inhibition-based therapy.

51 . The method of claim 42 , further comprising the step of treating said patient with an IMPDH inhibitory agent.

52 . The method of claim 42 , wherein the IMPDH inhibitory agent is identified according to the method of claim 27 .

53 - 55 . (canceled)