nominally significantP > 0.05
We defined this set as cis -eQTLs identified in LCLs or transformed fibroblasts in GTEx ( FDR < 0.05), which were not even nominally significant ( P > 0.05) in GTEx breast tissue.
We defined this set as cis -eQTLs identified in LCLs or transformed fibroblasts in GTEx ( FDR < 0.05), which were not even nominally significant ( P > 0.05) in GTEx breast tissue.
Interestingly, 8 of the 9 eQTLs for these GWAS variants, which could be confidently attributed to breast cancer cells, were also at least borderline significant in normal breast tissue in GTEx (1.3 × 10 − 20 < P < 7.4 × 10 − 2 ; Additional file 3 : Figure S8; Additional file 1 : Table S8), suggesting that the effect of genetic variation on gene expression in the baseline normal tissue state is generally maintained following tumorigenesis.