In contrast to 1205Lu melanoma cells, in primary fibroblasts no reduction of cell viability (Figure 6C; left panel) and no increase in cell death (Figure 6C; right panel) was observed on day 6, neither by inhibition of A1, Mcl-1, or A1/Mcl-1 alone nor by co-administration of 5-FU. Here, MCL1 is linked to melanoma.