In the case-control study by Charlier et al. [26], the role of PCB153 as a significant risk factor of breast cancer was confirmed, whereas in Kobayashi et al.’s paper [27] highlighted the link between the presence of non-dioxin-like PCBs in maternal blood during pregnancy and the increased H19 and LINE-1 methylation levels in cord blood is highlighted, which implies a reduced birth size, particularly in female infants. The gene discussed is H19; the disease is breast cancer.