Concordance of programmed death-ligand 1 expression assessments determined via two immunohistochemical tests and the polymerase chain reaction method

Figure 4 Receiver operating characteristic curve discriminating programmed cell death protein 1 Ligand 1 scores corresponding to positive and negative programmed death-ligand 1 (clone SP142) status (< 1% and ≥ 1%). AUC: Area under the curve.