Diagnostic Value of RASSF1A gene DNA methylation in Differential Diagnosis of Thyroid Benign Tumors and Papillary Thyroid Carcinoma

Document Type : Original Article

Authors

1 Department of Biochemistry, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran

2 Department of Veterinary medicine, School of Agriculture, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran

Abstract

Thyroid cancer is the most common endocrine malignancy that its incidence has
continuously increased in recent decades all over the world. Thyroid cancer in Iran
is the seventh most common cancer in women and the 14th in men and the 11th most
common cancer in both genders. The study on the methylation status of RASSF1A
gene promoter has shown that this gene is methylated in 35% of benign and
malignant thyroid tumors. Hypermethylation of the RASSF1A gene use for the
differentiation of benign tumors from malignant of thyroid gland. The aim of this
study was to determine the sensitivity and specificity of DNA methylation of
RASSF1A gene in the differential diagnosis of benign tumors from papillary thyroid
carcinoma.160 samples of patients with malignant thyroid tumors (80 samples) and
benign thyroid (80 samples) were entered into this study from all patients referring
to Ahwaz medical centers. The Hypermethylation of the gene after DNA extraction
was done by COBRA method. Finally, for calculating sensitivity and specificity of
the two tests were done by epidemiological calculations.The sensitivity and
specificity of Hypermethylation of the RASSF1A gene test were 91.25% and 15%
respectively.Hypermethylation of the promoter of the RASSF1A gene as a diagnosis
test is more sensitive to differential diagnosis of benign tumors from papillary
thyroid carcinoma.

Keywords

References

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Journal of Epigenetics
Volume 1, Issue 2
April 2019
Pages 17-23

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History

  • Receive Date: 03 June 2019
  • Revise Date: 02 October 2019
  • Accept Date: 15 December 2019

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