This risk model had the largest C-index (C-index = 0.873) and contained 11 key HRD-related genes (KCNK3, ASPM, HOXD4, SLC7A14, OSR2, ZNF560, IRX5, ATP8A2, SPOCD1, FOXE1, and CHST9), of which four were favorable prognostic factors for LGG and seven were unfavorable prognostic factors (Figure 2C). The gene discussed is SLC7A14; the disease is hypoparathyroidism-retardation-dysmorphism syndrome.