GBA1 and neoplasm: Among the products are tumour‐directed monoclonal antibodies with enhanced antibody‐dependent cytotoxicity (ADCC), vascular endothelial growth factor (VEGF), complement factor H (FH), keratinocyte growth factor (FGF7/KGF), epidermal growth factor (EGF), hepatocyte growth factor (HGF), asialo‐erythropoietin (asialo‐EPO, AEPO), alpha‐galactosidase (aGal) and beta‐glucocerebrosidase (GBA).