Fig. 4: Kaplan–Meier survival curves according to the protein expression of AHRR and SFRP2 in the survival cohort.

Cohorts were dichotomised by optimal H-score cutoffs. a, b OS according to AHRR expression in the tumour and the tumour-microenvironment (TME). c, d OS according to SFRP2 expression in the tumour and the TME. Significance levels were determined using the log-rank test.