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How familial cancer genes and environmentally induced oncogenes have changed the endocrine landscape

S L Asa1

  • 1University Health Network and Toronto Medical Laboratories, Toronto, Ontario, Canada. sylvia.asa@uhn.on.ca

Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc
|March 27, 2001
PubMed

Insights

Activating mutations in the RET proto-oncogene drive endocrine tumors like MEN-2. Understanding these genetic drivers enables early screening and improved diagnostics for thyroid cancer.

Area of Science:

  • Endocrinology
  • Oncology
  • Genetics

Background:

  • The RET proto-oncogene is implicated in Multiple Endocrine Neoplasia type 2 (MEN-2).
  • Activating mutations in this tyrosine kinase receptor are the first identified inherited oncogene.
  • Radiation exposure, as seen in Chernobyl, can cause chromosomal rearrangements involving the RET gene.

Purpose of the Study:

  • To elucidate the mechanisms of endocrine tumorigenesis driven by the RET proto-oncogene.
  • To explore the impact of genetic understanding on patient management for MEN-2.
  • To investigate the role of RET gene alterations in thyroid carcinoma, including radiation-induced cases.

Main Methods:

  • Analysis of activating mutations in the RET proto-oncogene.
  • Review of clinical management strategies for MEN-2 patients.
  • Investigation of radiation-induced chromosomal rearrangements involving the RET gene.
  • Development and application of novel immunohistochemical markers.

Main Results:

  • Activating RET mutations provide insight into inherited oncogenesis.
  • Knowledge of RET mutations allows for in utero screening and prophylactic thyroidectomy.
  • Radiation-induced RET gene alterations enhance understanding of papillary thyroid carcinoma.
  • A novel immunohistochemical marker has been developed for diagnostic purposes.

Conclusions:

  • Understanding RET proto-oncogene mutations has revolutionized the management of MEN-2.
  • Genetic insights into RET are crucial for diagnosing and potentially eradicating medullary thyroid carcinoma.
  • Further research into RET alterations improves diagnostic capabilities for thyroid cancers.

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