Consequently, it appears that the effects of hepatic steatosis and serum lipid levels on treatment response may be linked to host IFNL3 genotype. For instance, IFNs can activate signal transducer and activators of transcription which is involved in adipogenesis through the peroxisome- proliferator-activated receptor-gamma (PPARG) activation pathway. Cai et al. reported the association of steatosis with SNPs in PPARG as well as in patatin-like phospholipase domain-containing 3 and IFNL3.