Greater than two coexisting mutations in KRAS and NRAS identified in the circulating tumor DNA fraction of liquid biopsies by NGS and confirmed with ddPCR.
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: Greater than two coexisting mutations in KRAS and NRAS identified in the circulating tumor DNA fraction of liquid biopsies by NGS and confirmed with ddPCR. ### Output: 