PFDN1 and invasive breast carcinoma: First, we evaluated the disease-specific prognostic value of the PFDN family including PFDN1, 2, 4 and 6 by TCGA PanCancer Atlas using Kaplan–Meier analysis of cBioPortal database (https://www.cbioportal.org, accessed on 1 January 2024) in breast invasive carcinoma (Figure 1A–D).