CD274 and neoplasm: In contrast, positive tumoral PD-L1 expression (TPS ≥1%) was not found to compromise LRC (HR = 1.186, 95% CI 0.375 - 3.755, p = 0.772) or PFS (HR = 0.846, 95% CI 0.282 - 2.538, p = 0.766) of patients with early resolution of tumor-associated hypoxia during chemoradiation.