Abstract：
:Groups of microRNA genes, methylation of which is associated with the initial (I-II) stages of breast cancer, are determined, and new markers and marker systems for the disease diagnosis were created on the basis of these data. A total of 14 genes in which methylation was associated with breast cancer were identified with the use of methyl-specific PCR on a representative sample of 70 tumor specimens. Analysis of 46 specimens from patients with clinical stages I and II detected 9 genes (MIR-124-1, MIR-124-3, MIR-125b-1, MIR-129-2, MIR-132, MIR-148a, MIR-193a, MIR-34b/c, and MIR-9-3), in which methylation was associated with the initial stages of the disease. Using ROC analysis, we formed two systems including 6 markers each and detecting breast cancer at stages I-II with high sensitivity (89 and 91%) and specificity (88%) at AUC=0.92-0.93. These sets were validated on the total sample of 70 specimens including all disease stages; they showed 93 and 94% sensitivities, 88% specificity, and AUC=0.95. Highly sensitive systems of markers, based on microRNA gene methylation, were created for the diagnosis of breast cancer at stages I-II.
journal_name
Bull Exp Biol Medjournal_title
Bulletin of experimental biology and medicineauthors
Braga EA,Filippova EA,Loginov VI,Pronina IV,Burdennyi AM,Kazubskaya TP,Fridman MV,Khodyrev DS,Kushlinskii NEdoi
10.1007/s10517-019-04691-xsubject
Has Abstractpub_date
2019-12-01 00:00:00pages
280-284issue
2eissn
0007-4888issn
1573-8221pii
10.1007/s10517-019-04691-xjournal_volume
168pub_type
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