ESR1 and ductal breast carcinoma in situ: ANA, anastrozole; DCIS, ductal carcinoma in situ; ER+, estrogen receptor-positive; EXE, exemestane; HDL-C, high-density lipoprotein cholesterol; HR+, hormone receptor-positive; LDL-C, low-density lipoprotein cholesterol; LET, letrozole; NR, not reported; SD, standard deviation; TC, total cholesterol; TG, triglycerides; TMX, tamoxifen.