ABC xenobiotic transporters play important roles in systemic exposure and dermal distribution of tyrosine kinase inhibitor regorafenib and its active metabolites. Issue 1 (January 2019) - Katov, Yukio; Hasan, Aya; Masuo, Yusuke; Fujita, Ken-ichi; Kubota, Yutaro; Sasaki, Yasutsuna