FBN1 and type 2 diabetes mellitus: In a study involving 143 participants, grouped into three categories: normal glucose regulation (NGR), impaired glucose regulation (IGR), and newly diagnosed type 2 diabetes mellitus (nT2DM), it was observed that plasma asprosin levels were significantly higher in the IGR and nT2DM groups compared to the NGR group, especially in those with IGR [80].