Subsequently, the overexpression of MCT1, CD36 and FATP1 protein and FABP5 mRNA (Fig. 4d-e) in breast cancer cells in the presence of adipocytes indicated that tumour cells absorb more monocarboxylic acids (MAs, refer to pyruvate and lactate) and FFAs. The gene discussed is SLC16A1; the disease is breast carcinoma.