ctDNA analysis in patients with cancer of unknown primary and its value in guiding targeted treatment when combined with predicted cancer types by 90-gene reverse-transcription polymerase chain reaction assay.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: ctDNA analysis in patients with cancer of unknown primary and its value in guiding targeted treatment when combined with predicted cancer types by 90-gene reverse-transcription polymerase chain reaction assay. ### Output: 