Fig. 1: HOTAIR is upregulated in recurrent GIST tissue and is associated with imatinib sensitivity.

A Some of the lncRNAs that were differentially expressed in recurrent GIST tissues compared with that in primary GIST tissues. B Heat map of differentially expressed lncRNAs after imatinib treatment. C Overall survival based on the high expression of HOTAIR in several kinds of gastrointestinal tumors. D The change in HOTAIR expression after transfection, as assessed using qRT-PCR in GIST-T1 and GIST-882 cells. *P < 0.05, **P < 0.01 vs. NC or pEX-3. E, F CCK-8 assays were performed to examine imatinib sensitivity of GIST cells, and the IC50 values are plotted as bar graphs. *P < 0.05, **P < 0.01 vs. NC.