The metastatic importance of PTPRD in human breast cancer was observed in the examination of the distant metastasis free survival (DMFS) curve where high levels of PTPRD were associated with poor DMFS outcomes (Figure 3F; p = 0.0153) relative to low levels of PTPRD and was associated with basal subtype of human breast cancer (Figure 3G; p = 0.0085, hazard ratio = 2.3 (1.2–3.78)). Here, PTPRD is linked to breast cancer.