Predictive and Prognostic Significance of MRNA Expression and DNA Copies Aberrations of , , , , , , and Genes in Patients with Breast Cancer
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Material And Methods: The study involved 97 patients with luminal B breast cancer IIB-IIIB stages. DNA and RNA were isolated from samples of tumor tissue before and after treatment. Microarray analysis was performed for all samples on high-density microarrays (DNA chips) of Affymetrix (USA) CytoScanTM HD Array and Clariom™ S Assay, human. Detection of expression level of seven chemosensitivity genes-, , , , , , and -was performed using PCR real-time (RT-qPCR).
Results: The expression of the (AC scheme), , , and genes in patients with an objective response to treatment (complete and partial regression) is higher than in patients with stabilization and progression ( 0.05). According to our results, the presence of a high level of in a tumor biopsy is associated with the low efficiency of the NAC CP scheme ( 0.05). The presence of deletion is associated with complete and partial regression, as for the and genes ( 0.05). Higher rates of metastatic survival are associated with a high level of expression and amplification of the gene (log-rank test 0.02 and 0.05).
Conclusion: Thus, a complex assessment of the chemotherapy's gene expression is important not only for understanding the heterogeneity and molecular biology of breast cancer but also to obtain a more accurate disease prognosis.
Yang Y, Fan W, Liu X, Chen Q Med Mol Morphol. 2024; 57(3):244-251.
PMID: 38914690 DOI: 10.1007/s00795-024-00393-0.
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Simic P, Pljesa I, Nejkovic L, Jerotic D, Coric V, Stulic J Medicina (Kaunas). 2022; 58(11).
PMID: 36422199 PMC: 9696103. DOI: 10.3390/medicina58111660.