Among the nine cohorts, four cohorts showed that the expression level of DUSP1 in OVCA was higher than that in non-tumour tissues, and the difference was statistically significant (TCGA_GTEx_OVCA, p < 0.0001; GPL570-OVCA, p = 0.0033; GSE11954, p = 0.0349; GSE155310, p < 0.0001). This evidence concerns the gene DUSP1 and neoplasm.