SIRT1 and breast cancer: The results also showed that there was a significant positive association between nuclear and cytoplasmic SIRT1 in luminal A BC (r2 (176) = 0.36, p < 0.001), luminal B BC (r2 (88) = 0.397, p < 0.001), and TNBC (r2 (75) = 0.44, p < 0.001).