Discovery and Validate of Multi-genetic Biomarkers for Capecitabine in Chinese Colorectal Patients

At present, chemotherapy is widely used in the adjuvant treatment of colorectal cancer patients after surgery. Capecitabine is one of the main chemotherapeutic drugs. But the effect is not good enough, the adverse reaction is serious, and the individual differences were significant. The present study shows that these problems are related to the differences in the exposure of capecitabine and its metabolites in different patients. The genetic biomarkers for capecitabine include DRD, MTHFR and TYMS. Mutations in these genes directly affect the expression of metabolic enzymes involved in capecitabine and control the concentration of capecitabine and its metabolites. However, these markers have been obtained through clinical trials in the United States, and their role in predicting the effectiveness or safety of capecitabine and its metabolites has not been validated in Chinese cancer patients.The study was based on a case study of patients with colorectal cancer in China, and capecitabine as the primary postoperative chemotherapy regimen to verify whether the available biomarkers can be used to predict the effectiveness and safety of capecitabine. To clarify the effect of capecitabine on endogenous metabolites, and to study the mechanism of its effect, so as to discover new biomarkers.

Sex

All

Minimum age

18 Years

Inclusion Criteria:

1. more than 18 years old;
2. patients with colon cancer diagnosed by biopsy (regardless of cancer stage);
3. received postoperative containing capecitabine chemotherapy;
4. volunteer to participate in the experiment

Exclusion Criteria:

1. pregnant and lactating women;
2. patients with hypersensitivity to fluorouracil or severe metabolic failure;
3. patients with severe infection;
4. patients with other cancers other than colorectal cancer within the first five years of colorectal cancer surgery;

• BACKGROUNDZhang X, Sun B, Lu Z. Evaluation of clinical value of single nucleotide polymorphisms of dihydropyrimidine dehydrogenase gene to predict 5-fluorouracil toxicity in 60 colorectal cancer patients in China. Int J Med Sci. 2013 May 20;10(7):894-902. doi: 10.7150/ijms.5556. Print 2013. PMID 23781135
• BACKGROUNDLi F, Qin X, Chen H, Qiu L, Guo Y, Liu H, Chen G, Song G, Wang X, Li F, Guo S, Wang B, Li Z. Lipid profiling for early diagnosis and progression of colorectal cancer using direct-infusion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. Rapid Commun Mass Spectrom. 2013 Jan 15;27(1):24-34. doi: 10.1002/rcm.6420. PMID 23239314
• BACKGROUNDIkeda K, Oike Y, Shimizu T, Taguchi R. Global analysis of triacylglycerols including oxidized molecular species by reverse-phase high resolution LC/ESI-QTOF MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Sep 1;877(25):2639-47. doi: 10.1016/j.jchromb.2009.03.047. Epub 2009 Apr 7. PMID 19481987
• BACKGROUNDDenkert C, Bucher E, Hilvo M, Salek R, Oresic M, Griffin J, Brockmoller S, Klauschen F, Loibl S, Barupal DK, Budczies J, Iljin K, Nekljudova V, Fiehn O. Metabolomics of human breast cancer: new approaches for tumor typing and biomarker discovery. Genome Med. 2012 Apr 30;4(4):37. doi: 10.1186/gm336. PMID 22546809
• BACKGROUNDWu CW, Ng SS, Dong YJ, Ng SC, Leung WW, Lee CW, Wong YN, Chan FK, Yu J, Sung JJ. Detection of miR-92a and miR-21 in stool samples as potential screening biomarkers for colorectal cancer and polyps. Gut. 2012 May;61(5):739-45. doi: 10.1136/gut.2011.239236. Epub 2011 Sep 19. PMID 21930727
• BACKGROUNDDeenen MJ, Meulendijks D, Cats A, Sechterberger MK, Severens JL, Boot H, Smits PH, Rosing H, Mandigers CM, Soesan M, Beijnen JH, Schellens JH. Upfront Genotyping of DPYD*2A to Individualize Fluoropyrimidine Therapy: A Safety and Cost Analysis. J Clin Oncol. 2016 Jan 20;34(3):227-34. doi: 10.1200/JCO.2015.63.1325. Epub 2015 Nov 16.