ABCA1 and melanoma: Additionally, in the two other melanoma cell lines highly expressing ABCA1, namely WM1341D and WM9 (Additional file 2: Fig. S1), we also observed a significant diminution of the total migrated distance (Additional file 2: Fig. S2A, B) as well as a loss of invasion potential (Additional file 2: Fig. S2C, D) upon probucol treatment.