SLCO1B3 and ovarian carcinoma: A cancer-type variant with a distinct 5′region, termed cancer-type (ct)-SLCO1B3 coding for the cancer-type (ct)-OATP1B3 transporter was identified as the main OATP1B3 variant in colon, lung (Sun et al., 2014) pancreatic (Thakkar et al., 2013), and also ovarian cancer (Alam et al., 2018).