Meta-analyses all yielded insignificant pooled estimates of the associations between diabetes and ER/PR/Her2 status (pOR, 95% CI for ER negativity versus ER positivity: 1.13, 0.89 to 1.43, p = 0.310; PR negativity versus PR positivity: 1.07, 0.83 to 1.39, p = 0.595; Her2 positivity versus Her2 negativity: 0.83, 0.62 to 1.12, p = 0.232, Figure 2). Here, PGR is linked to diabetes mellitus.