“…Other studies included in-vitro testing in different cell lines, such as ovarian (L929 112 ), liver (HepG2, 15,120 SMMC7721, 117 and BEL-7402 120 ), intestinal (Caco-2 114 ), lung (LLC1 9 ), breast (MDA-MB-231 9 ), melanoma (B16-F10 9 ), cervical (HeLa 109 ), kidney (LLC-PK1 118 ), and gastric (GES-1 111 ). In all in-vitro tests, FRL, alone 15,[110][111][112][113][114][115][117][118][119] or in conjugation with other medication, 9,19,116,120 showed significant cytostatic effects on cancer cells and a safety profile compared to healthy cells. Considering the discussion in the previous section related to the potential use of FRL in oncology, together with DOX as an organ-protector and/or synergistic cytostatic, 2 in-vitro studies related to the DOX-FRL complex would be interesting to review in greater details.…”