GCG and type 2 diabetes mellitus: However, Liraglutide treatment did not significantly alter the liver mean proton density fat fraction (PDFF) (p = 0.15), magnetic resonance spectroscopy-PDFF (p = 0.80), liver volume (p = 0.30), or the total liver fat index (p = 0.39).157 Semaglutide, a GLP-1 receptor agonists (GLP-1-Ra) developed based on the extensive research behind the development of Liraglutide, has been used to treat T2DM.