Table 6.

PDL-1 in MMRd tumors in endometrial cancer.

Reference	Type of Tissue	MMRd (n)	MMRd (%)	PDL-1
Jones 2020 [161]	Not described	203	33	PDL-1 was more frequent in MMRd tumors
Bregar 2017 [88]	FFPE	13	33	PDL-1 was present in 62% of MMRd tumors and high-grade tumors vs. 46% in MMRp tumors
Sloan 2017 [95]	FFPE	38	56.7	100% MMRd tumors demonstrated PDL-1 expression in peritumoral immune compartment
Rowe 2020 [136]	FFPE	43	69.4	60.4% MMRd tumors showed positive tumoral PDL-1 vs. 5.3% MMRp

FFPE: formalin-fixed paraffin-embedded, MMRd: mismatch repair-deficient.