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Journal of Endocrinological Investigation

, Volume 32, Issue 3, pp 238–241 | Cite as

Mutations in TAZ/WWTR1, a co-activator of NKX2.1 and PAX8 are not a frequent cause of thyroid dysgenesis

  • A. M. Ferrara
  • L. De Sanctis
  • G. Rossi
  • S. Capuano
  • G. Del Prete
  • E. Zampella
  • P. Gianino
  • A. Corrias
  • G. Fenzi
  • M. Zannini
  • P. E. Macchia
Original Article

Abstract

Aim: In 80–85% of cases, congenital hypothyroidism is associated with thyroid dysgenesis (TD), but only in a small percentage of cases mutations in thyroid transcription factors (NKX2.1, PAX8, FOXE1, and NKX2.5) have been associated with the disease. Several studies demonstrated that the activity of the transcription factors can be modulated by the interaction with other proteins, such as coactivators and co-repressors, and TAZ (transcriptional co-activator with PDZ-binding motif or VVWTR1) is a co-activator interacting with both NKX2.1 and PAX8. In the present study we investigate the role of TAZ in the pathogenesis of TD. Material and methods: By Single Stranded Conformational Polymorphism, we screened the entire TAZ coding sequence for mutations in 96 patients with TD and in 96 normal controls. Results: No mutations were found in patients and controls, but we found several polymorphisms in both groups. No significant differences could be demonstrated in the prevalence of the mutations between patients and controls. Conclusions: Our data indicate that TAZ mutations are not a cause of TD in the series of patients studied.

Key-words

Cofactor congenital hypothyroidism thyroid development thyroid dysgenesis transcription factor 

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Copyright information

© Italian Society of Endocrinology (SIE) 2009

Authors and Affiliations

  • A. M. Ferrara
    • 1
  • L. De Sanctis
    • 2
  • G. Rossi
    • 1
  • S. Capuano
    • 1
  • G. Del Prete
    • 1
  • E. Zampella
    • 1
  • P. Gianino
    • 2
  • A. Corrias
    • 3
  • G. Fenzi
    • 1
  • M. Zannini
    • 4
  • P. E. Macchia
    • 1
  1. 1.Department of Molecular and Clinical Endocrinology and OncologyUniversity of Naples “Federico II”NapoliItaly
  2. 2.Department of Pediatric and Adolescence SciencesUniversity of TurinItaly
  3. 3.Division of Pediatric EndocrinologyRegina Margherita Children’s HospitalTurin
  4. 4.lnstitute of Experimental Endocrinology and Oncology-CNR and Department Cellular and Molecular Biology and PathologyUniversity of Naples “Federico II”NaplesItaly

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