NCIt definition : The hydrochloride salt form of losoxantrone, an anthrapyrazole-based antineoplastic
antibiotic. Losoxantrone intercalates into DNA, induces single- and double-stranded
DNA breaks and inhibits topoisomerase II, thereby inhibiting DNA replication and repair
as well as RNA and protein synthesis. Losoxantrone is less cardiotoxic than doxorubicin.;