Under microscope, IHC staining illustrated that no high expressions of DUSP1 protein were found in OVCA tissues but rather in non-tumour tissues (Figures 1C,D); the difference was considered statistically significant (IHC cohort-1, p < 0.0001; IHC cohort-2, p = 0.0011; Figures 2A,B). Here, DUSP1 is linked to neoplasm.