Risk Assessment Report on a new psychoactive substance: methyl 3,3-dimethyl-2-{[1-(pent-4-en-1-yl)-1H-indazole-3-car- bonyl]amino}butanoate (MDMB-4en-PINACA) in accordance with Article 5c of Regulation (EC) No 1920/2006 (as amended)

This risk assessment report presents the summary findings and the conclusion of the risk assessment carried out by the Scientific Committee of the EMCDDA on MDMB-4en- PINACA.