a decreasing trendp = 0.28
The ctDNA clearance rate (ctDNA-clearance/[ctDNA-clearance + ctDNA-nonclearance]) showed a decreasing trend with advancing pathological stage: 47.73% (21/44) in stage II, 48.57% (17/35) in stage III, and 14.29% (1/7) in stage IVA patients ( p = 0.28) (Fig. 3 g).