These BC resistances are associated with several efflux resistance genes including bcrABC cassette, Ide, mdrL, qacH, qacA, qacEΔ1-sul, and emrE which have been reported in various serotypes, ST and CC of L. monocytogenes isolated from diverse sources (Kovacevic et al., 2016; Korsak et al., 2019). The gene discussed is SMDT1; the disease is breast cancer.