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Sequence variant in the intron 10 of the RET oncogene in a patient with microfollicular thyroid carcinoma with

Emilija Veljkovic1, Radan Dzodic, Gorana Neskovic

  • 1Institute for Nuclear Sciences "Vinca," Laboratory for Radiobiology and Molecular Genetics, Mike Alasa 14, 11001 Belgrade, Serbia and Montenegro.

Medical Oncology (Northwood, London, England)
|December 8, 2004
PubMed

Insights

A novel RET gene variant, IVS10 + 4G, was identified in a patient with microfollicular thyroid carcinoma. This germline alteration may contribute to tumor progression through genome destabilization.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Sequence alterations in the RET proto-oncogene are crucial for assessing thyroid cancer.
  • Establishing a comprehensive genotype-phenotype relationship is vital for diagnosing and treating thyroid malignancies.

Purpose of the Study:

  • To expand the database of oncogenic RET lesions by analyzing a patient with thyroid carcinoma.
  • To investigate the role of RET gene mutations in thyroid cancer pathogenesis.

Main Methods:

  • DNA analysis of tumor and constitutive samples from a thyroid carcinoma patient.
  • Mutational screening and sequence characterization of the RET proto-oncogene, including intronic regions.

Main Results:

  • A germline sequence variant, IVS10 + 4G (A to G substitution), was identified in intron 10 of the RET oncogene.
  • This variant creates a chi-like sequence with recombinational potential, potentially destabilizing the genome.
  • The patient was diagnosed with microfollicular thyroid carcinoma with a tendency to evolve into medullary thyroid carcinoma (MTC).

Conclusions:

  • The identified RET intronic variant may play a role in microfollicular thyroid carcinoma pathogenesis.
  • Genome destabilization via homologous recombination is a potential mechanism for tumor progression.
  • This finding reinforces the importance of correlating RET gene variations with specific disease phenotypes.

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