- Mutational analysis of Smad3, a candidate tumor suppressor implicated in TGF-beta and menin pathways, in parathyroid adenomas and enteropancreatic endocrine tumors. Shattuck, T.M., Costa, J., Bernstein, M., Jensen, R.T., Chung, D.C., Arnold, A. J. Clin. Endocrinol. Metab. (2002)