Surprisingly, according to the dataset from 152 normal prostate tissue samples and 492 PC samples from the GEPIA database and dataset from 52 normal prostate tissue samples and 497 PC samples from UALCAN, ING1-ING5 expression showed no significant difference in the PC group in comparison to non-tumour prostate tissue (Supplemental Figure S1). This evidence concerns the gene ING1 and pachyonychia congenita.