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Published on: August 26, 2020
Rapid Detection of N-RAS Gene Common Mutations in Acute Myeloid Leukemia (AML) Using High Resolution Melting (HRM)
Saeed Zaka Khosravi1, Mohammadreza Moonesi1, Alireza Moradabadi2
1Department of Hematology, Faculty of Paramedicine, AJA University of Medical Sciences, Tehran, Iran.
Objective:
Acute myeloid leukemia is caused by the clonal proliferation of undifferentiated myeloid hematopoietic precursors. AML prognosis is highly involved in the treatment response and is determined by mutations in several genes such as N-RAS. This study aims to identify the distribution of common N-RAS mutations (codons 12, 13, and 61) in AML patients using the HRM method and confirm this method's efficiency for mutation detection by comparing its results with the sequencing data as the Gold standard method.
Methods:
Peripheral blood samples were taken from 50 newly diagnosed AML patients. Mononuclear cells were isolated from samples, and DNA was extracted. Then, mutation detection was investigated using the HRM method. Efficacy of the HRM method in mutation detection was determined in comparison with direct sequencing.
Results:
N-RAS mutations were detected in 7 of the 50 samples (14%). Most of the mutations were found in codon 12 (57.14%), and 28.57% and 14.28% of mutations were in codons 61 and 13, respectively. There was no statistically significant association between patients' demographic data and HRM results.
Conclusion:
According to mutation detection results and the HRM results confirmation with the sequencing method, this method can be introduced as an efficient, low-cost, and fast method for detecting common mutations.
