ESR1 and triple-negative breast carcinoma: –Kulkarni YM, Yakisich JS, Azad N, Venkatadri R, Kaushik V, O’Doherty G, et al. Anti-tumorigenic effects of a novel digitoxin derivative on both estrogen receptor-positive and triple-negative breast cancer cells. Tumour Biol. 2017 Jun;39(6):1010428317705331