INS and type 2 diabetes mellitus: Importantly, this study identified novel candidate genes linked to insulin secretion and T2D risk: ERO1B (ER stress and protein folding), HNRNPA2B1 (an RNA-binding protein regulating insulin levels), and RHOBTB3 (involved in secretory protein trafficking), whose inhibition reduced intracellular insulin (Grenko et al., 2024).