We found an association between histology (P < .001; Figure 1), which corroborates with Ames and colleagues, who observed a greater expression of AGR2 in endometrioid and mucinous subtypes when compared to the high‐grade serous carcinoma, and absence of AGR2 was associated with increased malignancy, tumor progression, and relapse.29 This evidence concerns the gene AGR2 and serous adenocarcinoma.