In a very current research, we noted the identification plus the characterization of a new atypical opioid receptor with special destructive regulatory properties to opioid peptides.1 Our results showed that ACKR3/CXCR7, hitherto referred to as an atypical scavenger receptor for chemokines CXCL12 and CXCL11, is also a broad-spectrum scavenger for o