HSA-MIR-455-3P CAN BE A PREDICTIVE BIOMARKER OF ANEMIA IN PATIENTS WITH NON-SMALL CELL LUNG CANCER TREATED WITH CARBOPLATIN PLUS PACLITAXEL

Lung cancer is the leading cause of cancer-related morbidity and mortality worldwide. The initial treatment of lung cancer depends on the definition of the tumor type and its staging. The most common treatment is chemotherapy, and the first-line treatment is a combination of carboplatin and paclitaxel. Although this treatment has good efficacy, there is a high prevalence of adverse reactions, especially hematological reactions. Studies on new biomarkers related to these adverse reactions, such as circulating miRNAs, are very important for optimizing the quality of life of patients. miRNAs have high stability in several biological fluids and they have specific expressions in different tissues or pathologies. Thus, this study aimed to verify the relationship between circulating miRNAs and adverse hematologic reactions caused by treatment with carboplatin and paclitaxel in patients with lung cancer. miRNAs were extracted from samples collected from six patients without anemia and six patients with anemia using the miRNeasy Serum/Plasma Kit (Qiagen, cat no. 217184). After miRNA extraction, microarray analysis was performed. The samples went through processes of marking, insertion in the chips, hybridization for 18 h, washing, and scanning. All procedures were performed using the Affymetrix multi-user platform®, and were in accordance with the user guide of the commercial kit MicroArrayFlashTag™Biotin HSR RNA Labeling Kit Genechip®4.0 (ThermoFisher, Cat No. /ID: 902445,900720,900454).