IL7 and breast cancer: Macrophage Inflammatory Protein (MIP) 1b is a member of the inflammatory cytokine gene family whose expression is induced by pro-inflammatory and pro-mitotic stimuli (28).The gene is rapidly induced by LPS or IL-7 in human peripheral blood mononuclear cells, Elevated MIP1b gene is associated with an increased risk of total breast cancer and increased number of ER-positive BC cases (29).