MiR-214 upregulates HIF-1α and VEGFA with the suppression of ING4 to promote the invasion, proliferation and migration of non-small-cell lung cancer cells [132], and a possible mechanism is that ING4, which is recruited by egl-9 family hypoxia-inducible factor 1 (EGLN1), unexpectedly has no effect on HIF-1α degeneration but acts as an adapter protein to recruit transcriptional repressors to regulate HIF activity [157]. This evidence concerns the gene VEGFA and non-small cell lung carcinoma.