Pronunciation: gol'de cold'man
Definition: a mathematic model that predicts that tumor cells mutate to a resistant phenotype at a rate dependent on their intrinsic genetic instability. The probability that a cancer would contain drug-resistant clones depends on the mutation rate and the size of the tumor. According to this hypothesis, even the smallest detectable cancers would contain at least one drug-resistant clone; therefore, the best chance of cure would be to use all effective chemotherapy drugs; in practice, this has meant using two different non–cross-resistant chemotherapy regimens in alternating cycles.
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Examples: glitazone, GI cocktail, etc.