The prognostic value of CAND1 in ERα-positive breast cancer was further investigated using the Kaplan–Meier plotter, in which CAND1 showed to correlate positively with worse prognosis in ERα-positive breast cancer, suggesting that CAND1 might act as a predictive biomarker for worse prognosis in ERα-positive breast cancer. The gene discussed is CAND1; the disease is breast carcinoma.