Carcinoma diagnosis and treatment based on ODC1 genotype
The present invention provides methods and kits a) for preventing and/or treating cancer (e.g., colorectal cancer, neuroblastoma) that is linked, in part, to high levels of ODC activity and increased cellular polyamine content, b) for predicting cancer patient survival, especially cancer patient's whose cancer is linked, in part, to high levels of ODC activity and increased cellular polyamine contents, and c) for selecting the corresponding treatment options for such patients based on the allelic nucleotide sequence or SNP at positions +263 and/or +316 of the ODC1 gene as well as cancer treatment methods, in each case, which include the determination of the ODC1 genotype at the +263 and/or +316 positions, as a means to guide treatment selection.
1. A method for preventing recurrence of or treating colorectal carcinoma in a patient in need thereof, the method comprising administering to the patient effective amounts of a pharmaceutical therapy comprising:
(i) a first agent that inhibits ornithine decarboxylase (ODC) within the patient, wherein the first agent is α-difluoromethylornithine (DFMO); and
(ii) a second agent that modulates the polyamine pathway to reduce overall polyamine content within the patient when combined with the first agent, wherein the second agent is sulindac,
wherein the patient's genotype at rs2302616 of both alleles of the ODC1 gene is T/T.
2. The method of claim 1 , wherein the patient's genotype at rs2302616 of both alleles of the ODC1 gene is obtained by receiving a report containing said genotype, taking a patient history that reveals said genotype, or testing the patient's genotype at rs2302616 of both ODC1 alleles.
3. The method of claim 1 , wherein the patient's genotype at rs2302615 of at least one allele of the ODC1 gene is G.
4. The method of claim 1 , wherein the method prevents the formation of new aberrant crypt foci, new adenomatous polyps or new adenomas with dysplasia in the patient.
5. The method of claim 1 , wherein the method prevents the development or recurrence of a colorectal carcinoma in a patient at risk therefor.
6. The method of claim 1 , wherein the method prevents ototoxicity or the risk thereof within the patient.
7. The method of claim 1 , wherein the patient has been identified as having one or more advanced colorectal neoplasms or as having one or more adenomatous polyps in the colon, rectum or appendix.
8. The method of claim 1 , wherein the patient has been diagnosed with familial adenomatous polyposis, Lynch syndrome, or familial colorectal cancer type X.
9. The method of claim 1 , wherein the patient is human.
10. A method for preventing recurrence of or treating colorectal carcinoma in a patient in need thereof, the method comprising:
a) detecting whether the patient's genotype at rs2302616 of both alleles of an ODC1 gene is T/T by:
(i) obtaining or having obtained a biological sample from the patient; and
(ii) performing or having performed a genotyping assay on the biological sample to determine if the patient has a T/T genotype at rs2302616 of both alleles of the ODC1 gene; and
b) selecting or having selected the patient for treatment when a T/T genotype at rs2302616 of both alleles of the ODC1 gene is detected; and
c) administering or having administered to the selected patient effective amounts of a pharmaceutical therapy comprising:
(i) a first agent that inhibits ornithine decarboxylase (ODC) within the patient, wherein the first agent is α-difluoromethylornithine (DFMO); and
(ii) a second agent that modulates the polyamine pathway to reduce overall polyamine content within the patient when combined with the first agent, wherein the second agent is sulindac.
11. The method of claim 3 , wherein the patient's genotype at rs2302615 of at least one allele of the ODC1 gene is obtained by receiving a report containing said genotype, taking a patient history that reveals said genotype, or testing the patient's genotype at rs2302615 of at least one ODC1 allele.
12. The method of claim 3 , wherein the patient's genotype at rs2302615 of one allele of the ODC1 gene is determined.
13. The method of claim 3 , wherein the patient's genotype at rs2302615 of both alleles of the ODC1 gene is determined.
14. The method of claim 13 , wherein the patient's genotype at rs2302615 of both alleles of the ODC1 gene is G/G or G/A.
15. The method of claim 14 , wherein the patient's genotype at rs2302615 of both alleles of the ODC1 gene is G/G.