Exp Clin Endocrinol Diabetes 2008; 116(10): 625-628
DOI: 10.1055/s-2008-1065366
Article

© Georg Thieme Verlag KG Stuttgart · New York

Aryl Hydrocarbon Receptor Interacting Protein Gene (AIP) Mutations are Rare in Patients with Hormone Secreting or Non-secreting Pituitary Adenomas

S. Buchbinder 1 , A. Bierhaus 1 , M. Zorn 1 , P. P. Nawroth 1 , P. Humpert 1 [*] , T. Schilling 1 [*]
  • 1University of Heidelberg, Department of Internal Medicine, Endocrinology, Metabolism and Clinical Chemistry Heidelberg, Germany
Further Information

Publication History

received 16.01.2008 first decision 15.03.2008

accepted 15.03.2008

Publication Date:
16 May 2008 (online)

Abstract

Objective: Recent data suggest that mutations in the aryl hydrocarbon receptor interacting protein gene (AIP) are associated with pituitary adenomas. AIP is considered to be a tumour suppressor gene.

Methods: 110 Caucasian patients living in Germany with pituitary adenoma (55 hormone secreting, 55 non-functioning) were examined for AIP mutations.

Results: Three patients (2.7%) harboured an AIP germline mutation. A heterozygous mutation, R16H (c.47G>A), was found in two patients and a heterozygous G>C change in the 3’UTR, 60 bp downstream of the termination codon, in one patient. All three patients suffered from non-functioning adenoma. Additionally, a silent polymorphism, D172D (c.516C>T), was found in 3 patients with non-functioning adenoma, in 2 patients with prolactinoma and in one patient with acromegaly.

Conclusions: AIP mutations are rare in sporadic pituitary adenomas in the German population and occur independently from a hormone secretion of the adenoma.

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1 These authors contributed equally to this work

Correspondence

T. SchillingMD 

University of Heidelberg

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69120 Heidelberg

Germany

Phone: +49/6221/56 38 87 1

Fax: +49/6221/56 79 69

Email: Tobias_Schilling@med.uni-heidelberg.de