Pathogenesis of Non-Familial Somatotroph Adenomas

The cAMP pathway appears to be a dominant molecular driver of somatotroph adenoma pathogenesis. Elevated cAMP drives GH hypersecretion and somatotroph proliferation and also induces DNA damage, as evidenced by increased genomic instability and a senescent signature. Collectively, these findings elucidate a molecular framework for the biological behavior of these adenomas and their responsiveness to therapies targeting cAMP-dependent pathways, including somatostatin receptor ligands.