As a result, the 14 membrane genes showed significant results (P-value <0.01 as well as showing worse prognosis in highly expressed samples) (Table S2). Finally, we explored genes that were commonly identified in the both analyses (correlation and survival analysis), characterizing the F11R and PTGIR as the membrane markers in CTCs of mesenchymal state in breast cancer. This evidence concerns the gene PTGIR and breast cancer.