Analysis of The Cancer Genome Atlas (TCGA) data indicates that PAX8 mRNA expression is significantly upregulated in high-grade serous ovarian cancers (HGSOC) compared to normal fallopian tube tissues (p = 0.007) (Table 1); but the role of PAX8 in other ovarian cancer histotypes is poorly understood. Here, PAX8 is linked to ovarian serous adenocarcinoma.