Melanocyte survival (RB1), proliferation of neuronal progenitor cells (ATM, VEGF), heparin binding (PRNP, TNC, VEGF), dopamine formation (TH), drug resistance (ABCC1), quantity of tumor cell lines (LIF, PIK3R1, RB1, TIMP3, VEGF), transformation (FOXO3A), malignancy of astrocytoma (TNC), tumor vascularization (PTEGS, VEGF), growth of sarcoma cell lines (TIMP3), tissue proliferation (GRP, KRIT1, RB1, RBL2). The gene discussed is RBL2; the disease is astrocytoma (excluding glioblastoma).