SMDT1 and breast cancer: The known molecular mechanisms of BC resistance are due to the activity of efflux pump systems encoded through the brcABC (Elhanafi et al., 2010), qacH on the Tn6188 transposon (Müller et al., 2013), and emrE (Gilmoure et al., 2010; Kovacevic et al., 2015) genes that can be acquired by horizontal gene transfer leading to BC resistance in L. monocytogenes.