of marginal significancep = 0.083
In addition, stage II-IV TETs showed a higher PD-L1 (SP142) TPS expression compared to the stage I TETs (Mann–Whitney U test, p = 0.001, Figure 5 ), while advanced-stage (III/IV) TETs were more frequently characterized by a zero IC-score compared to low-stage (I/II) TETs, although this correlation was of marginal significance (Fischer’s exact test, p = 0.083, 22.7% for stage III/IV versus 8.5% for stage I/II, Figure 6 ).