Case no. Age Gender Location Subtype INI1 expression Gradea TNM stage b Treatment   Local reccurence  Lymph node metastasis Initial metastatic sites Disease-free survival (months) Overall survival (months) Outcome ES_1 29 F Perineum Classic Negative 2 III Curative surgery Present Absent Lymph node 12 143  DOD ES_2 52 M Perineum Proximal Negative 2 IIA Curative surgery Present Present Lymph node 9 168 DOD ES_3 36 M Inguinal Proximal Negative 3 NA Curative surgery Present Absent Lung 25 113 DOD ES_4 64 F Back Proximal Positive 3 III Curative surgery Present Absent Lung 7 17 DOD ES_5 32 M Lower leg Classic Negative 3 III Curative surgery Absent Absent Lymph node 19 35 DOD ES_6 48 F Axilla Proximal Negative 3 IV Palliative treatment Present NA Lung NA 4 DOD ES_7 22 M Foot Classic NA 2 IIA Curative surgery Absent Absent Bone 10 18 DOD ES_8 41 M Perineum Classic Negative 2 III Curative surgery Present Present Lymph node 10 19 DOD

NA: Data not available DOD: Dead of disease aModified FNCLCC (French Federation of Cancer Centers) system (Coindre et al. Cancer. 1986, 58: 306-309). bTumor-Nodes-Metastases Classification.

Table 1: Clinicopathologic features of ES samples.