LINC02820 and esophageal squamous cell carcinoma: To identify LINC02820‐associating proteins in ESCC, we performed RNA pull‐down assays using in vitro transcribed sense or antisense LINC02820, Coomassie blue staining revealed several proteins (>180, >70, and >55 kDa) specifically enriched by biotinylated LINC02820 from both KYSE410 (Figure 5A) and KYSE30 cell lysates (Figure S3A), which were subsequently excised for mass spectrometry analyses (Tables S2–S4).