Genetic variants in telomere-maintaining genes and skin cancer risk.

Genetic variants in telomere-maintaining genes and skin cancer risk.
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DOI:
10.1007/s00439-010-0921-5
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发表时间:
2011-03
期刊:
影响因子:
5.3
通讯作者:
Han J
Han J
中科院分区:
生物学2区
文献类型:
--
作者:
Nan H;Qureshi AA;Prescott J;De Vivo I;Han J

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端粒相关基因在维持保护染色体末端的端粒结构完整性方面发挥着重要作用,端粒功能障碍可能导致肿瘤发生。我们评估了39个SNP之间的关联,其中包括端粒相关基因(TERT、TRF1、TRF2、TNKS2和POT1)中的38个标签SNP和TERT-CLPTM1L位点中的1个SNP(rs401681),该位点已在先前的GWAS中被确定为皮肤癌的易感位点,以及在白种人病例对照研究中患皮肤癌的风险护士健康研究 (NHS) 纳入了 218 例黑色素瘤病例、285 例鳞状细胞癌 (SCC) 病例、300 例基底细胞癌 (BCC) 病例和 870 例对照病例。在评估的 39 个 SNP 中,有 10 个显示出与至少一种皮肤癌风险名义上显着相关。对每个基因内的多项测试进行校正后,TERT 基因中的两个 SNP(rs2853676 和 rs2242652)和 TRF1 基因中的一个 SNP(rs2981096)显示出与黑色素瘤风险显着相关。此外,重复了 TERT-CLPTM1L 基因座中的 SNP rs401681,以发现与黑色素瘤风险的关联。这四个 SNP(rs2853676[T]、rs2242652[A]、rs2981096[G] 和 rs401681[C])对于黑色素瘤风险的加性优势比 (OR)(95% 置信区间 (95% CI))分别为 1.43 (1.14–1.81)、1.50分别为 (1.14–1.98)、1.87 (1.19–2.91) 和 0.73 (0.59–0.91)。此外,我们发现 rs401681[C] 与较短的相对端粒长度相关(趋势 p,0.05)。我们没有观察到 SCC 或 BCC 风险之间存在显着关联。我们的研究为端粒维持基因的遗传变异对黑色素瘤易感性的影响提供了证据。
Telomere-related genes play an important role in maintaining the integrity of the telomeric structure that protects chromosome ends, and telomere dysfunction may lead to tumorigenesis. We evaluated the associations between 39 SNPs, including 38 tag-SNPs in telomere-related genes (TERT, TRF1, TRF2, TNKS2, and POT1) and one SNP (rs401681) in the TERT-CLPTM1L locus which has been identified as a susceptibility locus to skin cancer in the previous GWAS, and the risk of skin cancer in a case-control study of Caucasians nested within the Nurses’ Health Study (NHS) among 218 melanoma cases, 285 squamous cell carcinoma (SCC) cases, 300 basal cell carcinoma (BCC) cases, and 870 controls. Of the 39 SNPs evaluated, ten showed a nominal significant association with the risk of at least one type of skin cancer. After correction for multiple testing within each gene, two SNPs in the TERT gene (rs2853676 and rs2242652) and one SNP in the TRF1 gene (rs2981096) showed significant associations with the risk of melanoma. Also, the SNP rs401681 in the TERT-CLPTM1L locus was replicated for the association with melanoma risk. The additive odds ratio (OR) (95% confidence interval (95% CI)) of these four SNPs (rs2853676[T], rs2242652[A], rs2981096[G], and rs401681[C]) for the risk of melanoma was 1.43 (1.14–1.81), 1.50 (1.14–1.98), 1.87 (1.19–2.91), and 0.73 (0.59–0.91), respectively. Moreover, we found that the rs401681[C] was associated with shorter relative telomere length (p for trend, 0.05). We did not observe significant associations for SCC or BCC risk. Our study provides evidence for the contribution of genetic variants in the telomere-maintaining genes to melanoma susceptibility.
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