Abstract
Thymidylate synthase (TS) catalyses the conversion of deoxy-uridylate to deoxy-thymidylate and is essential for DNA synthesis. The human TS gene promoter is polymorphic, having either double or triple tandem repeats of a 28-bp sequence. Here we determined the significance of this polymorphism in humans and its prediction for clinical outcome of patients with metastatic colorectal cancer treated with 5-fluorouracil. The TS mRNA level was analyzed using RT-PCR. Individuals homozygous for the triple repeat variant (L/L) had 3.6 times higher TS mRNA levels compared to those homozygous for the double repeat variant (S/S) in tumor tissue (P = 0.004). We tested 50 patients with disseminated colorectal cancer who received 5-FU treatment to determine whether this TS polymorphism will predict clinical outcome. We found individuals with S/S genotype had a response rate of 50% (4/8) when compared to 9% (2/22) in those with L/L and 15% (3/20) in those with S/L genotype (P = 0.041). Patients with L/L had less severe side effects to 5-FU (P = 0.008). The data suggest that genotyping for the TS polymorphism may have the potential to identify patients more likely to respond to 5-FU based chemotherapy.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 6 print issues and online access
$259.00 per year
only $43.17 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
Abbreviations
- 5-FU:
-
5-Fluorouracil
- TS:
-
Thymidylate synthase
- TP:
-
Thymidine phosphorylase
- DPD:
-
Dihydropyrimidine dehydrogenase
References
Midgley R, Kerr D . Colorectal cancer Lancet 1999 353: 391–399
Moertel CG . Chemotherapy for colorectal cancer N Engl J Med 1994 330: 1136–1143
Heidelberger C, Chaudhuri NK, Danneberg P, Mooren D, Griesbach L, Gerlach JH et al . Fluorinated pyrimidines: a new class of tumor inhibitory compounds Nature 1957 179: 663–666
Danenberg P . Thymidylate synthase—a target enzyme in cancer chemotherapy Biochem Biophys Acta 1977 473: 73–92
Horie N, Aiba H, Ogura K, Hojo H, Takeishi-K . Functional analysis and DNA polymorphism of the tandemly repeated sequences in the 5′-terminal regulatory region of the human gene for thymidylate synthase Cell Struct Funct 1995 20: 191–197
Horie N, Chimoto M, Nozawa R, Takeishi K . Characterization of the regulatory sequences and nuclear factors that function in cooperation with the promoter of the human thymidylate synthase gene Biochem Biophys Acta 1993 1216: 409–416
Leichman CG, Lenz HJ, Leichman L, Danenberg K, Baranda J, Groshen S . Quantitation of intratumoral thymidylate synthase expression predicts for disseminated colorectal cancer response and resistance to protracted-infusion fluorouracil and weekly leucovorin J Clin Oncol 1997 15: 3223–3229
Lenz HJ, Leichman CG, Danenberg KD, Danenberg PV, Groshen S, Gerlach JH et al . Thymidylate synthase mRNA level in adenocarcinoma of the stomach: a predictor for primary tumor response and overall survival J Clin Oncol 1995 14: 176–182
Lenz HJ, Danenberg KD, Leichman CG, Florentine B, Johnston PG, Gerlach JH et al . p53 and thymidylate synthase expression in untreated stage II colon cancer: associations with recurrence, survival, and site Clin Cancer Res 1998 4: 1227–1234
Lenz HJ, Hayashi K, Salonga D, Danenberg KD, Danenberg PV, Gerlach JH et al . p53 point mutations and thymidylate synthase messenger RNA levels in disseminated colorectal cancer: an analysis of response and survival Clin Cancer Res 1998 4: 1243–1250
Kawakami K, Omura K, Kanehira E, Watanabe Y . Polymorphic tandem repeat in the thymidylate synthase gene is associated with its protein expression in human gastrointestinal cancers Anticancer Res 1999 19: 3249–3252
Ulrich CM, Bigler J, Velicer CM, Greene EA, Farin FM, Potter JD . Searching expressed sequence tag database: discovery and confirmation of a common polymorphism in the Thymidylate synthase gene Cancer Epidemiol Biomarkers Prev 2000 9: 1381–1385
Pullarkat ST, Ingles SA, Xiong Y-P, Ingles SA, Sherrod A, Gerlach JH et al . Analysis of the thymidylate synthase gene polymorphism in the Latino population Proc AACR 1999 40: 4583
Marsh S, Collie-Duguid ESR, Li T, Liu X, McLeod HL . Ethnic variation in the thymidylate synthase enhancer region polymorphism among Caucasian and Asian populations Genomics 1999 58: 1–3
Marsh S, Ameyaw MM, Githang’s J, Indalo A, Ofori-Adjei D, McLeod HL . Novel thymidylate synthase enhancer region alleles in African populations Hum Mut 2000 16: 528
Metzger R, Danenberg K, Leichman CG, Salonga D, Schwartz EL, Gerlach JH et al . High basal level gene expression of thymidine phosphorylase (platelet-derived endothelial cell growth factor) in colorectal tumors is associated with nonresponse to 5-fluorouracil Clin Cancer Res 1998 4: 2371–2376
Ishikawa Y, Kubota T, Otani Y, Watanabe M, Teramoto T, Gerlach JH et al . Dihydropyrimidine dehydrogenase and messenger RNA levels in gastric cancer: possible predictor for sensitivity to 5-fluorouracil Jpn J Cancer Res 2000 91: 105–112
Kitchens ME, Forsthoefel AM, Barbour KW, Spencer HT, Berger FG . Mechanisms of acquired resistance to thymidylate synthase inhibitors: the role of enzyme stability Mol Pharmacol 1999 56: 1063–1070
Chomczynski P, Sacchi N . Single-step method of RNA isolation by acid guanidium thiocyabate-phenol-chloroform extraction Ann Biochem 1987 162: 156–159
Takeishi K, Kaneda S, Ayusawa D, Shimizu K, Gotoh O, Seno T . Nucleotide sequence of a functional cDNA for thymidylate synthase Nucleic Acids Res 1987 13: 2035–2045
Horikoshi T, Danenberg KD, Stadlbauer TH, Volkenandt M, Shea LC, Gerlach JH et al . Quantitation of thymidylate synthase, dihydrofolate reductase, and DT-diaphorase gene expression in human tumors using the polymerase chain reaction Cancer Res 1992 52: 108–116
Zar JH . Biostatistical Analysis Prentice-Hall: Englewood Cliffs 1974
Kaplan EL, Meier P . Nonparametric estimation for incomplete observations J Am Stat Assoc 1958 53: 457–481
Miller RG Jr . Survival Analysis John Wiley & Sons: New York 1981
Pike MC . Contribution to the discussion on the paper by R Peto and J Peto, ‘Asymptotically efficient rank invariant procedures’ J Royal Stat Soc 1972 Series A 135: 201–203
Acknowledgements
This work is funded by NIH grants R01 CA 82655, R01 CA74166 and P30 CA14089. JS is supported by Dr Mildred Scheel Stiftung, Bonn, Germany.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pullarkat, S., Stoehlmacher, J., Ghaderi, V. et al. Thymidylate synthase gene polymorphism determines response and toxicity of 5-FU chemotherapy. Pharmacogenomics J 1, 65–70 (2001). https://doi.org/10.1038/sj.tpj.6500012
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.tpj.6500012
Keywords
This article is cited by
-
Melatonin and 5-fluorouracil combination chemotherapy: opportunities and efficacy in cancer therapy
Cell Communication and Signaling (2023)
-
The prevalence and clinical relevance of 2R/2R TYMS genotype in patients with gastrointestinal malignancies treated with fluoropyrimidine-based chemotherapy regimens
The Pharmacogenomics Journal (2021)
-
Roles of circadian clocks in cancer pathogenesis and treatment
Experimental & Molecular Medicine (2021)
-
Clinical cancer genomic profiling
Nature Reviews Genetics (2021)
-
5-fluorocytosine resistance is associated with hypermutation and alterations in capsule biosynthesis in Cryptococcus
Nature Communications (2020)