MMP9 and breast cancer: Interestingly, BC-risk minor allele c.1331-163 A (rs3787268) MMP9 is associated with low expression in adipose tissue of the absolute majority of the above genes (β = −0.14–−0.40), and only the eQTL effect of this allele on the CD40 expression is positive (β = 0.18) (Supplementary Table S6).