BBC3 and neoplasm: Previous studies in our laboratory have shown that recombinant adenovirus carrying the lethal gene PUMA (p53-upregulated modulator of apoptosis) (generous gift of Bert Vogelstein, Johns Hopkins University, Baltimore) under the control of Ets and AP1-RAS-responsive elements (Py2-SV40-PUMA) suppressed the growth of a variety of tumor cells harboring mutated RAS [8–13].