SLC22A5 and systemic primary carnitine deficiency disease: Some anticancer drugs (etoposide, actinomycin D, and vinblastine) and antibiotics (cephaloridine, cefepime, and cefluprenam, levofloxacin, and grepafloxacin) can inhibit carnitine transporter OCTN2 leading to secondary carnitine deficiency [48,49].