Current development of podophyllotoxins

Abstract
The unique biological properties and therapeutic efficacy of the podophyllotoxin derivatives, Vumon (VM26, teniposide) and Vepesid (VP16-213, etoposide), are stimulating the interest of both laboratory and clinical researchers. Investigations on new pharmaceutical formulations, pharmacokinetics and metabolism are providing more appropriate information on drug administration; experimental chemotherapy indicates that, among others, cytosine arabinoside and cisplatin are highly synergistic with podophyllotoxins; single agent and combination treatment clinical trials are defining the respective role of Vumon and Vepesid in cancer chemotherapy.