The Kaplan-Meier estimator revealed a statistically significant relationship between miRNA218, the expression of BRCA1 and survival in patients with breast cancer: [expression of miRNA-218 – survival time in months: 30.9 for low vs. 42.2 for high; expression of BRCA1- survival time in months: 41.9 for low vs. 31.5 for high expression [27]. Here, BRCA1 is linked to breast cancer.