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Interleukin promoter polymorphisms and prognosis in colorectal cancer.

Wilkening, Stefan (författare)
Tavelin, Björn, (författare)
Umeå universitet, Onkologi
Canzian, Federico (författare)
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Enquist, Kerstin (författare)
Palmqvist, Richard, (författare)
Umeå universitet, Patologi, Patologi
Altieri, Andrea (författare)
Hallmans, Göran, (författare)
Umeå universitet, Näringsforskning
Hemminki, Kari (författare)
Lenner, Per, (författare)
Umeå universitet, Onkologi
Försti, Asta (författare)
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Umeå universitet Medicinska fakulteten. Institutionen för strålningsvetenskaper. Onkologi. (creator_code:org_t)
Umeå universitet Medicinska fakulteten. Institutionen för medicinsk biovetenskap. Patologi. (creator_code:org_t)
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Umeå universitet Medicinska fakulteten. Institutionen för folkhälsa och klinisk medicin. Näringsforskning. (creator_code:org_t)
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2008
Engelska.
Ingår i: Carcinogenesis. - 1460-2180. ; 29:6, s. 1202-1206
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • There is strong evidence that cancer-associated inflammation promotes tumor growth and progression. This is especially true for colorectal cancer (CRC). Interleukins (ILs) are important modulators for inflammation. We examined whether promoter polymorphisms in key IL genes (IL4, IL4R, IL6, IL8 and IL10) are associated with the risk or clinical outcome of CRC. Five single-nucleotide polymorphisms (SNPs) were analyzed in genomic DNA from a cohort including 308 Swedish incident cases of CRC with data on Dukes' stage and up to 16 years of follow-up and 585 healthy controls. The selected SNPs have previously been shown to be functional and/or associated with cancer. None of the analyzed SNPs associated with the risk of CRC. When stratifying by tumor stage, significantly more patients carrying at least one G allele of IL10-1082 had tumors with Dukes' stages A + B than with stages C + D (P(trend) = 0.035 for genotype distribution). Analyzing associations with overall survival time, we found the rare T allele of IL4-590 to be related to a longer survival [CT versus CC Cox proportional hazard ratio 0.69, 95% confidence intervals 0.46-1.03, TT versus CC 0.32 (0.10-1.03)]. For IL6-174, the CG genotype was associated with a longer survival when compared with the CC genotype [0.64 (0.40-1.01)]. The present study was particularly suitable for survival analysis because all patients were sampled before the diagnosis of CRC. Our results suggest that the SNPs IL4-590 and IL6-174 may be useful markers for CRC prognosis. The predicted biological effect of these SNPs in relation to promotion of cancer progression is consistent with the observed increased survival time.

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