ABCG2 and sarcoma: Analysis of disease-free survival (DFS) (Figure 3B) shows a correlation between low ABCG2 expression and poor prognosis for CESC (p = 0.029), LUAED (p = 0.010), sarcoma (SARC) (p = 0.047), and thyroid carcinoma (THCA) (p = 0.009).