Steady state mRNA levels of MUC1 were determined by qRT-PCR in the parental population of SW620 human colonic carcinoma cells and in subcloned cell lines derived from SW620 cells that have stable intrinsic Δψm ranging from higher, comparable or lower than that of the population (↑Δψm, ≈Δψm or ↓Δψm, respectively) [1]. This evidence concerns the gene MUC1 and colon carcinoma.