- Increased mRNA levels of xeroderma pigmentosum complementation group B (XPB) and Cockayne's syndrome complementation group B (CSB) without increased mRNA levels of multidrug-resistance gene (MDR1) or metallothionein-II (MT-II) in platinum-resistant human ovarian cancer tissues. Dabholkar, M., Thornton, K., Vionnet, J., Bostick-Bruton, F., Yu, J.J., Reed, E. Biochem. Pharmacol. (2000)