FPR2 and cystic fibrosis: It promotes resolution by activating the ALX/FPR2 receptor (Perretti et al., 2002), shared with LXA4 and RvD1, placing this receptor at the crossroad of multiple proresolving pathways that can be altered in CF, where ALX/FPR2 expression is downregulated (Pierdomenico et al., 2017).