This is a feasibility trial to assess use of OncoTarget and OncoTreat testing in a basket design of patients with oligmetastasis across various solid tumor histology. Eligible oligometastatic patients that are receiving radiation therapy (n=20) will undergo mandatory tumor biopsy prior to precision medicine testing. Formalin fixed paraffin embedded tissue with \>50% tumor will be sent to the Laboratory of Personalized Genomic Medicine at Columbia University Medical Center for Darwin OncoTarget and OncoTreat testing. This will be supplementing routine clinical care with the goal of improving outcomes. The treating oncologist will decide to administer standard of care systemic therapy or proceed with treatment recommended by precision medicine testing. Feasibility outcomes include the ability to have the OncoTarget and OncoTreat test performed based on tumor type and pathology, ability to procure agents, change in medication use, and identification of unknown barriers. This study is assessing the use of precision medicine in a population has documented poor outcomes with implications aimed at improving these outcomes.