This result is contradictory to that noted by Koga et al. who reported elevated CXCL1 serum levels using multisuspension cytokine array in untreated FMF patients during attack and attack-free periods (59), suggesting that the reduced CCL1 and CXCL1 levels observed in the Danish study could be secondary to colchicine treatment. Here, CXCL1 is linked to familial Mediterranean fever.