Mice where the GVC-administration reduced mean tumour weight (LV-miniMg-Full-HSV and LV-miniMg-∆MEF3/NF1-HSV) also showed a net reduction in mean body weight during the treatment period, while control mice with LV-∆miniMg-HSV demonstrated a mean gain in body weight (Fig. 4f). This evidence concerns the gene NF1 and neoplasm.