Our team applied the online data analytic tool TNMplot (https://www.tnmplot.com/) and Kaplan–Meier Plotter (https://www.kmplot.com) from the GEO and TCGA databases and found that the expression of the AMHR2 gene in breast cancer tissues was lower than that in adjacent tissues and that those with higher AMHR2 gene expression had higher relapse-free survival (Fig. 3 and 4). Here, AMHR2 is linked to breast carcinoma.