In addition, we also analyzed tumor angiogenesis genes, and the results showed that seven tumor angiogenesis genes (HIF1A, PDGFB, NRP1, VEGFB, FGFR1, ROBO1, and SLIT1) had substantially higher expression in the high-risk group compared with the low-risk group (Figure 8B). The gene discussed is HIF1A; the disease is neoplasm.