This concerned 44 patients with adrenocortical adenoma or one patient with adrenocortical adenoma together with medullary thyroid carcinoma (MTC), follicular thyroid carcinoma (FTC) or papillary thyroid carcinoma (PTC), two patients with MEN2A syndrome or seven patients with MEN2A and MTC, three patients with MEN2B and MTC, or nine patients with merely somatic MTC. This evidence concerns the gene RET and differentiated thyroid carcinoma.