BrUOG 387: Phase Ib investigator-initiated trial of a heat shock protein 90 inhibitor (HSP90i) combined with a CDK4/6i in advanced breast cancer progressing on CDK4/6i and in solid tumors with retinoblastoma (Rb)-deficiency (IND163592).
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: BrUOG 387: Phase Ib investigator-initiated trial of a heat shock protein 90 inhibitor (HSP90i) combined with a CDK4/6i in advanced breast cancer progressing on CDK4/6i and in solid tumors with retinoblastoma (Rb)-deficiency (IND163592). ### Output: 