TGFB1 and gastric neoplasm: measured exosomal TGF‐β1 levels in the gastroepiploic veins of 61 patients with stomach cancer.[61] Their findings revealed that exosomal TGF‐β1 expression was higher in patients with stages II, III, and IV GC compared to those with stage I. Furthermore, patients with LNM exhibited twice the level of exosomal TGF‐β1 expression as those without LNM, suggesting that exosomal TGF‐β1 expression can be an indicator of high malignancies in GC.