https://www.selleckchem.com/products/Aloxistatin.html PURPOSE Several biomarkers have been reported to correlate with neoadjuvant chemotherapy response. Our aim was to establish the correlation between neutrophils-to-lymphocytes (NLR), lymphocytes-to-monocytes (LMR), and platelets-to-lymphocytes ratios (PLR) and the Miller Payne grade (MPG) and Residual Cancer Burden Score (RCB), as indicators to response to chemotherapy. METHODS Data were retrospectively collected from the First Surgical Clinic database between January 2016 and December 2018. RESULTS 96 patients were included in the study. The multivariate regression analysis showed a statistical correlation between oestrogen (ER) and progesterone receptor (PR) status, Ki67 over 15%, and tumour infiltrating lymphocytes (TILs) and MPG and RCB. For the three studied ratios, p value was statistical not significative. ROC curve showed a cut-off value of 2.7 NLR, for which correlation with the pathological complete response to chemotherapy (pCR) was significative (p=0.03). CONCLUSIONS Our findings suggest that NLR can be a predictive biomarker for pCR. Further studies, on larger sample size, are necessary to establish the correlation with MPG and RCB.PURPOSE The rs712 polymorphism in a let-7 microRNA-binding KRAS gene has been associated with different types of cancer, however these associations have been inconsistent. The purpose of this study was to determine the association between rs712 polymorphism in a let-7 microRNA-binding KRAS gene comparing breast cancer (BC) patients with healthy subjects from Mexican population. METHODS The genotyping of the rs712 polymorphism was performed by polymerase chain reaction (PCR) in 437 BC patients and 414 healthy women. RESULTS The observed frequencies of the rs712 polymorphism indicated an associated protective factor for BC in the dominant GT+TT model [odds ratio (OR) 0.70, 95% confidence interval (CI) 0.51-0.97, p=0.040). An association between genotype and BC patients was ev