Through the use of various public databases and bioinformatics analyses, it has been observed that 11 HOXAs (HOXA1, HOXA2, HOXA3, HOXA4, HOXA5, HOXA6, HOXA7, HOXA9, HOXA10, HOXA11, and HOXA13) show high expression in lower-grade glioma and GBM tissues [200]. The gene discussed is HOXA4; the disease is glioma.