To corroborate the molecular association between FAAH and BC metastasis, we analyzed the mRNA expression of a panel of 84 metastasis-associated genes in MDA-MB-231 parental cells and FAAH-overexpressing MDA-MB-231 cells using the commercial RT2 ProfilerTM PCR Array of Human Tumor Metastasis (see Methods) (Fig. 5e and Supplementary Data 3). The gene discussed is FAAH; the disease is breast cancer.