Nilson et al. [55] generated a GCT tumor model through chronic hyperstimulation of LH by fusing the β-subunit of LH containing a carboxy-terminal peptide of human chorionic gonadotropin β subunit to a bovine inhibin α-subunit promoter (α-LHβCTP) to extend its half-life and target gonadotrope cells. This evidence concerns the gene PLOD1 and granular cell tumor.