- Patients must be 18 years of age or greater and have a histologically or cytologically proven solid malignancy that is metastatic or unresectable and for which standard curative or palliative measures do not exist or are no longer effective. Patients who have recurred after previous surgery and/or radiation may participate in this trial, although no restriction is placed on the number of prior therapies. Patients must be willing and able to have two core-needle biopsies of their tumor to participate in this trial.