SLC22A3 and cervical adenocarcinoma: Recently, hOCT3 appeared to be also involved in the transport of cisplatin because cisplatin-sensitive cervical adenocarcinoma KB-3-1 cells express much higher level of hOCT3 than their Pt(II) resistant variants [66]; however, studies on hOCT3-overexpressing HEK293 cells showed no effect on cisplatin accumulation with respect to wild-type cells [65].