Although the difference in the population average did not reach statistical significance, the loss of miR-139-5p expression may help to identify a new molecular subtype important for the biological understanding of disease and for clinical management within this invasive subgroup of breast cancer. miR-139-5p is frequently down-regulated in invasive breast carcinoma Next, we reviewed miR-139-5p expression in previously published data using TaqMan Low-Density Arrays to analyze 29 breast tumors and 21 normal adjacent controls ( Romero-Cordoba et al. 2012 ).
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