STAT3 and gastric cancer: In the colorectal cancer microenvironment, circPOLQ acts as a miR‐379‐3p sponge to counteract STAT3 inhibition, promoting CD206+ M2 macrophage infiltration—a mechanism functionally complementary to the circATP8A1/miR‐1‐3p/Hippo/STAT6 axis observed in gastric cancer [35, 36].