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2006:
Wang Xiao Qi; Luk John M; Garcia-Barcelo Mercè; Miao Xiaoping; Leung Pauline P; Ho David W; Cheung Siu Tim; Lam Brian Y; Cheung Cindy K; Wong Ashley S; Lau Silvana S; So Man Ting; Yu Wan Ching; Cai Qi; Liu Karen S; Hui Chee Kin; Lau George K; Poon Ronnie T P; Wong John; Fan Sheung Tat
Liver intestine-cadherin (CDH17) haplotype is associated with increased risk of hepatocellular carcinoma.
Clinical cancer research : an official journal of the American Association for Cancer Research 2006;
12(
17):.
PURPOSE: Hepatocellular carcinoma (HCC), the most common form of liver cancer, is a leading cause of cancer death worldwide. We previously showed that aberrant mRNA splicing of the liver intestine-cadherin gene CDH17 in liver tissues was triggered by the specific constellation of two CDH17 single nucleotide polymorphisms (651T and IVS6+35G). CDH17 aberrant splicing was highly associated with tumor dissemination and shorter survival of HCC patients. Consequently, it is highly relevant to assess whether the presence of these single nucleotide polymorphisms in the general population represents a risk to the development of HCC. EXPERIMENTAL DESIGN: We conducted a case-control study including 164 HCC and 99 cirrhosis patients and 293 healthy controls. Genotyping was done by PCR and direct sequencing. Odds ratio (OR) and chi2 analysis were used to analyze genotypes and haplotypes. RESULTS: Genotypes 651TT [OR, 2.62; 95% confidence interval (95% CI), 1.34-5.03] and IVS6+35 GG (OR, 1.95; 95% CI, 1.04-3.62) were highly associated with HCC disease. The 651T (C>T) and IVS6+35G (A>G) alleles were also overrepresented in HCC patients and, in particular, the T-G haplotype was the most prevalent in HCC patients when compared with healthy controls (OR, 1.57; 95% CI, 1.167-2.109; P=0.004), which was in agreement with the aberrant splicing observed in tumor tissues. There was no significant difference in genotype and allele frequencies between cirrhosis patients and controls. CONCLUSION: The functional T-G haplotype of CDH17 (651 C>T and IVS6+35A>G) is a genetic susceptibility factor for the development of HCC in a Chinese population.
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