Table 2.

Overall PD-L1, STAT3, IL6, and EGFR immunoexpressions in study population.

Immunoexpressions	Frequency	Percentage (%)
PD-L1
Negative	27	81.8
Positive	6	18.2
STAT3
Negative	27	81.8
Low expression	6	18.2
IL6
Negative	3	9.1
Low expression	7	21.2
High expression	23	69.7
EGFR
Negative	5	15.2
Low expression	15	45.4
High expression	13	39.4