PD-L1 expression and immune cells in anaplastic carcinoma and poorly differentiated carcinoma of the human thyroid gland: A retrospective study.

Using TPS, PD-L1-positive ATC patients showed a trend for worse survival than those with PD-L1-negative tumors ( Fig. 1B ), although the differences were not significant (P=0.15).

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We also found a trend towards worse survival in ATC with PD-L1 expression in tumor cells, but the figures did not reach statistical significance, probably due to the limited number of cases ( Fig. 1B ).

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