4.5 Article

Decreased risk of ovarian cancer associated with rs9898876 sex hormone-binding globulin gene variant

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MOLECULAR BIOLOGY REPORTS
卷 49, 期 6, 页码 4537-4544

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SPRINGER
DOI: 10.1007/s11033-022-07297-1

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Haplotypes; Ovarian cancer; Polymorphism; Sex hormone-binding globulin

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This study evaluated the involvement of common SHBG gene variants in ovarian cancer susceptibility and evolution. The results showed that SHBG rs9898876 was associated with a decreased risk of ovarian cancer, and could potentially serve as a diagnostic biomarker for ovarian cancer.
Background Ovarian cancer (OC) is one of the most common gynecologic cancers,with significant morbidity and mortality. The risk of OC is influenced by hormone status, of which sex hormone-binding globulin (SHBG), which influences the serum availability of steroid sex hormones, is implicated in the pathogenesis and evolution of OC. The aim of this study is to evaluate the involvement of common SHBG gene variants in OC susceptibility and evolution. Materials A case control study including 71 OC patients and 74 cancer-free controls, who were genotyped for rs9898876, rs13894, rs1799941 and rs6257 SHBG SNP. Genotyping was done by the allelic discrimination method, using VIC- and FAM-labeled primers. Results The minor allele frequencies of rs9898876, rs13894, rs1799941 and rs6257 SHBG SNP was comparable between OC cases and control women, implying no significant associations of the tested variants and overall OC risk. Taking homozygous wild-type genotype as reference (OR = 1.00), heterozygous rs9898876 (G/T), and minor allele-carrying genotypes [G/T + T/T] were associated with reduced risk of OC. While rs9898876 heterozygosity (G/T) was predictive of OC occurrence, no significant association of the remaining three tested SNPs was noted with altered risk of OC. Irrespective of FIGO staging, the four tested SHBG SNPs were not associated with the clinical progression of OC. Conclusions In conclusion, SHBG rs9898876 is associated with a decreased risk of OC, and thus constitutes a potential diagnostic biomarker of OC.

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