MICA and melanoma: In vitro tumor migration is not affected by atorvastatin treatment (Figures A2D,E in Appendix) therefore NK-killing of MICA overexpressing melanoma cells seem to be determinant for the reduction of melanoma development in vivo, as suggested by the differences of tumor growth between MICA negative (LB583-MEL and LB2033-MEL), MICA-low (untreated LB1319-MEL), and MICA-higher (atorvastatin-treated LB1319-MEL) melanoma cells.