CD276 and neoplasm: Multivariate Cox regression modeling suggested that surgical assessment (R1/2/X, HR = 2.8, 95% CI: 1.23-6.39, P = 0.014) and CD276 expression in tumor cells (HR = 7.52, 95% CI: 2.47-22.91, P < 0.001) were independent recurrence risk factors for ACC (Table 2).