Key result
ADIPOQ rs266729 G allele linked to ~190% greater colorectal cancer risk versus CC genotype.
Why the study?
Is the ADIPOQ rs266729 G/C gene polymorphism associated with metabolic syndrome and altered adipocytokine levels in colorectal cancer patients?
Case-Control (n=155)
No
Is the ADIPOQ rs266729 G/C gene polymorphism associated with metabolic syndrome and altered adipocytokine levels in colorectal cancer patients?
The ADIPOQ rs266729 G/C polymorphism is associated with lower adiponectin levels and increased risk of metabolic syndrome in colorectal cancer patients.
ADIPOQ rs266729 polymorphism may link to cancer risk via APN; leaves open need for validation in larger cohorts.
Background: ADIPOQ gene, which encode for Adiponectin (APN), is sited on chromosome 3q27 and linked to a susceptibility locus for metabolic syndrome (MetS).The ADIPOQ rs266729 G/C gene polymorphism is significantly associated with low APN levels and linked to susceptibility to develop cancer.In addition, decreased APN serum levels are linked with tumor development and progression and inversely associated with markers of inflammation.Here, we investigate the influence of APN rs266729 G/C polymorphism on adipocytokine circulating levels and their association with MetS in colorectal cancer patients (CRC).Methods: Blood samples from 105 CRC patients (50 women and 55 men) with and without MetS were genotyped for APN rs266729 G/C polymorphism by TETRA ARMS PCR.ELISA assay was used to measure plasma levels of APN and inflammatory TNF-α cytokine.Biochemical and anthropometric parameters of MetS were also analyzed.Results: We found that CRC patients (N=75) with genotype rs266729G/C or carriers of G allele were associated with a significantly increased risk of MetS development (OR =2.9) compared to those with CC genotype (N=30).Also, CG/GG genotypes were associated with significantly lower plasma APN levels and higher TNF-α levels in comparison to CC genotype (P=0.034) and APN levels were decreased in relation to BMI increases (P=0.001).Conclusions: Our findings show that APN rs266729 G/C polymorphism is associated with lower APN levels in CRC patients, indicating that decreased circulating levels of APN may be a determinant risk factor for CRC in MetS patients.
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Divella et al. (2017) conducted a case-control in Colorectal cancer and metabolic syndrome (n=155). ADIPOQ rs266729 G allele (CG or GG genotype) vs. CC genotype was evaluated on Colorectal cancer risk (OR 2.9, 95% CI 1.4-5.9, p=0.02). The ADIPOQ rs266729 G allele (CG or GG genotype) was associated with a significantly increased risk of colorectal cancer compared to the CC genotype (OR 2.9).
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