Genetic polymorphisms in SLC23A2 as predictive biomarkers of severe acute toxicities after treatment with a definitive 5-fluorouracil/cisplatin-based chemoradiotherapy in Japanese patients with esophageal squamous cell carcinoma.

Abstract

OBJECTIVE:

Definitive chemoradiotherapy (CRT) with 5-fluorouracil (5-FU) and cisplatin (CDDP) is one of the standard therapies for esophageal squamous cell carcinoma (ESCC); however, inter-individual variations in clinical outcomes have yet to be investigated. In the present study, single nucleotide polymorphisms (SNPs) in SLC23A2 gene were retrospectively evaluated in 49 Japanese patients with ESCC who were treated with a definitive 5-FU/CDDP-based CRT, and the predictive values for the clinical response, severe acute toxicities, and long-term survival were assessed.

METHODS:

A course consisted of the continuous infusion of 5-FU at 400 mg/m(2)/day for days 1-5 and 8-12, the infusion of CDDP at 40 mg/m(2)/day on days 1 and 8, and radiation at 2 Gy/day on days 1 to 5, 8 to 12, and 15 to 19, with a second course being repeated after a 2-week interval. The SLC23A2 SNPs rs2681116, rs13037458, rs1715364, rs4987219, and rs1110277 were evaluated.

RESULTS:

The rs2681116 and rs13037458 had a tendency to predict the clinical response (p=0.144 and 0.085, respectively) and long-term survival (p=0.142 and 0.056, respectively). The rs4987219 and rs1110277 correlated with severe acute leukopenia (p=0.025) and stomatitis (p=0.019), respectively.

CONCLUSIONS:

Further investigations with a larger number of patients or an in vitro study are needed to confirm the predictive values of genetic polymorphisms in SLC23A2.

• Authors: Tetsuya Minegaki, Akiko Kuwahara, Motohiro Yamamori, Tsutomu Nakamura, Tatsuya Okuno, Ikuya Miki, Hideaki Omatsu, Takao Tamura, Midori Hirai, Takeshi Azuma, Toshiyuki Sakaeda, Kohshi Nishiguchi
• Journal: International journal of medical sciences (Int J Med Sci) Vol. 11 Issue 4 Pg. 321-6 ( 2014) ISSN: 1449-1907 [Electronic] Australia
• PMID: 24578608 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• SLC23A2 protein, human
• Sodium-Coupled Vitamin C Transporters
• Cisplatin
• Fluorouracil

Topics

• Aged
• Asian People
• Carcinoma, Squamous Cell (drug therapy, genetics)
• Cisplatin (therapeutic use)
• Esophageal Neoplasms (drug therapy, genetics)
• Esophageal Squamous Cell Carcinoma
• Female
• Fluorouracil (therapeutic use)
• Genotype
• Humans
• Male
• Middle Aged
• Polymorphism, Single Nucleotide (genetics)
• Retrospective Studies
• Sodium-Coupled Vitamin C Transporters (genetics)
• Treatment Outcome