- Participants with brain or subdural metastases are not eligible, unless the metastases are asymptomatic and do not require treatment or have been adequately treated by local therapy and have discontinued the use of corticosteroids for this indication for at least 4 weeks prior to study entry. Confirmation of radiographic stability must be done by comparing the brain scan (CT or MRI) performed during the Screening Period to a brain scan performed at least 4 weeks earlier (and following local therapy where applicable) using the same imaging modality as during the Screening Period. It is not the intention of this protocol to treat participants with active brain metastasis.