In keeping with data reported in other cell lines [13], MTT experiments showed that the ERK5 inhibitor AX15836 has no effect on the viability of A375 (Fig. 5A) and SK‐Mel‐5 melanoma cells (Fig. S4A), nor on that of HeLa cervical cancer cells (Fig. 5B). The gene discussed is MAPK7; the disease is melanoma.