These findings suggest that the high levels of FSCN1 may be indicative of an adrenal tumor, although a differential diagnostic power cannot be claimed, as circulating FSCN1 levels have not been measured in different types of adrenal tumors, such as pheochromocytoma and adrenocortical adenoma. The gene discussed is FSCN1; the disease is hereditary pheochromocytoma-paraganglioma.