ESR1 and breast cancer: For BC, high FUT8 expression level was related to positive PR and positive ER status (odds ratio [OR]= 3.34, 95% confidence interval [CI]: 1.60-6.96, p= 0.001 and odds ratio [OR]= 7.42, 95% confidence interval [CI]: 2.94-18.7, p< 0.0001).