In addition to a known low risk variant for breast cancer, the SNP rs3817198 located in the gene LSP1, another one, rs2271439,has been identified in the studies of GC-HBOC. This new SNP was validated within this thesis in further 368 cases. We showed that there is a statistically significant association with breast cancer, with a stronger effect in high-risk families. Sequencing of the gene LSP1 gene showed that the known SNP rs3817198 and the newly characterized SNP rs2271439 are not genetically linked. Additionally, we genotyped further 1501 new cases for published or novel SNPs. Thereby, we were able to confirm known SNPs in the genes RAD51L and FGFR2, but also new SNPs showed a significant associations, like rs1175332, rs2378556, and rs400161 in the gene TLE1, rs2394829 in the gene CDH23, and rs1610374. Finally, we selected approx. 800 SNPs, which have been analyzed within a comprehensive iCOGS-study and whose results will be available soon.
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In addition to a known low risk variant for breast cancer, the SNP rs3817198 located in the gene LSP1, another one, rs2271439,has been identified in the studies of GC-HBOC. This new SNP was validated within this thesis in further 368 cases. We showed that there is a statistically significant association with breast cancer, with a stronger effect in high-risk families. Sequencing of the gene LSP1 gene showed that the known SNP rs3817198 and the newly characterized SNP rs2271439 are not geneticall...
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