Figure 1From: Preclinical toxicity evaluation of AAV for pain: evidence from human AAV studies and from the pharmacology of analgesic drugs Potential toxicities of adeno-associated virus (AAV) gene therapy for chronic pain. Risks were sorted into three mutually exclusive categories (blue). For each type of risk existing evidence is highlighted (red) and future studies towards pre-clinical toxicology are proposed (green). MTD, maximum tolerated dose; CNS, central nervous system; IG, intraganglionic; IT, intrathecal; DRG, dorsal root ganglia; ppßE, prepro-ß-endorphin; IL-10, interleukin-10.Back to article page