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Emphasis of FAS/FASL gene polymorphism in patients with non-muscle invasive bladder cancer

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Abstract

Background

Bladder cancer (BCa) is the seventh most common cancer among males worldwide. Some reliable markers in blood, urine, and tumor tissue, including clinicopathologic variables, molecular and inflammatory markers, gene polymorphisms, and tumor gene expression profiles are identified for predicting response to BCG immunotherapy in high-risk BCa patients.

Aims

We aimed to determine if FAS and FASL polymorphisms are associated with lack of response to BCG in patients with BCa.

Methods

The study included patients with primary non-muscle invasive BCa that had undergone transurethral resection (TUR). Patient demographics, BCa characteristics, use of BCG immunotherapy, lack of response to BCG (if administered), BCa recurrence, and fatty acid synthetase/fatty acid syntethase ligand (FAS/FASL) polymorphisms were investigated.

Results

The study included 127 patients with primary BCa. Mean age of the 107 (84.3%) male and 20 (15.7%) female patients was 59.3 ± 13.2 years. Among the patients that received BCG immunotherapy, more FAS homozygous patients had BCa recurrence than FAS polymorphism-negative patients (P < 0.001) and more patients with homozygote FASL polymorphisms had BCa recurrence than those with heterozygous FASL polymorphisms and no polymorphism.

Conclusion

Evaluation of FAS/FASL polymorphisms can predict lack of response to BCG immunotherapy and prevent the loss of valuable time before such alternative treatments as early cystectomy are initiated.

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Correspondence to Gulay Ceylan.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Conflict of interest

The authors declare that they have no competing interests.

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Informed consent was obtained from all individual participants included in the study.

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Ceylan, C., Yahşi, S., Doğan, S. et al. Emphasis of FAS/FASL gene polymorphism in patients with non-muscle invasive bladder cancer. Ir J Med Sci 187, 1115–1119 (2018). https://doi.org/10.1007/s11845-018-1764-7

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  • DOI: https://doi.org/10.1007/s11845-018-1764-7

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