We showed that, as expected, a larger decrease of the cyclin D1 expression in (Bu3Sn)4TPPS-treated melanoma cells blocked in the G0/G1 phase (Figure 6A–C, middle and right panels) compared to the cells treated with (Bu2Sn)2TPPS and blocked in G2/M phase (Figure 6A–C, left and right panels). This evidence concerns the gene CCND1 and melanoma.