RT Journal Article SR Electronic T1 From serendipity to design: the evolution of drug development in oncology JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 155 OP 163 VO 64 IS 3 A2 Maurie Markman A1 David M. Peereboom YR 1997 UL http://www.ccjm.org/content/64/3/155.abstract AB Although screening of natural products remains the major method of discovering new anticancer drugs, newer techniques of rational drug design, computer-aided drug design, and combinatorial synthesis promise to broaden the scope of compounds available for screening. Recent changes in Food and Drug Administration rules allow for accelerated approval of drugs for treating cancer and other life-threatening illnesses, although the three-phase process of clinical trials remains largely unchanged.