To clarify the mechanism behind the IDO1‐overexpression‐enhanced glucose uptake in PC cells, we calculated the correlation between the gene expression of IDO1 and the 14 members of the solute carrier 2A (SLC2A) family (encoding GLUT proteins)30 in PC patients using the GEO database. The gene discussed is SLC2A1; the disease is pachyonychia congenita.