- COXEN uses molecular profiles as a Rosetta Stone for translating drug sensitivities of one set of cancers into predictions for another completely independent set of cell lines or human tumors. The COXEN methodology has been scrutinized and deemed methodologically sound by peer review. The ability of COXEN to predict drug effectiveness in patients a priori, from purely in vitro assays, is unique as no other tool currently either in practice or in development provides similar results.