highly significantP = 0.00007
In line with the Kaplan–Meier analysis, cf-miRNA levels were highly significant for OS in both univariate (HR 1.89, P = 0.00007) and multivariate (HR 1.83, P = 0.001) analysis (Fig. 1c and Supplementary Table 1 ), confirming that total cf-miRNA is an in the independent prognostic marker for survival in OC.