- All subjects must agree to stop the use of any known CYP3A4 substrates with narrow therapeutic window (such as alfentanil, astemizole, cisapride, dihydroergotamine, pimozide, quinidine, sirolimus, or terfanide; within the 14 days prior to receiving the first dose of AMG 232 and during protocol AMG 232 treatment (weeks 1-5); other medications (such as fentanyl and oxycodone) may be allowed per investigator's assessment/evaluation