Recent studies suggest that upregulation of Gal-3 is positively correlated with tumor progression and metastasis in a variety of cancers, including breast cancer, glioma, thyroid cancer, gastric cancer, lung cancer, kidney cancer, prostate cancer, melanoma, ovarian cancer, cervical cancer, bladder cancer and pancreatic cancer [16, 17, 37–39]. Here, LGALS3 is linked to breast cancer.