- PHASE IB: Fresh tumor biopsies from metastatic or primary tumor lesions will be done only if considered safe and feasible by treating physician and radiologist; patients who already have OncoPlex or other equivalent gene sequencing assay (eg Foundation One, Perthera, Caris etc) test results available from prior tumor biopsy are eligible to participate, without the needed of a repeat tumor biopsy, but the test results need to be available to the study principal investigator