Support for the role of FABP4 in chemoresistance and prognosis is implicated with the recent finding that the lipid droplet-associated protein perilipin 1 (PLIN1), which is found specifically associated with FABP4 modules in both the poor prognosis network (Supplementary Figure S6) and the chemoresistant network (Supplementary Figure S5), acts as a prognostic factor in breast cancer (56). Here, PLIN1 is linked to breast cancer.