Patients who are unable to swallow whole tablets are not eligible Patients who are unable to swallow intact tablets are not eligible Patients who are unable to swallow whole tablets are not eligible Inability to swallow intact tablets Inability to swallow intact tablets Participant is unable to swallow or absorb oral tablets. Patients who are unable to swallow tablets or liquid are not eligible. The participant is unable to swallow tablets that are whole (do not crush or chew or administer via nasogastric [NG]-tube) Unable or unwilling to swallow tablets as per dosing schedule Subjects that cannot swallow tablets. Subject is unable to swallow or absorb oral tablets normally Unable or unwilling to swallow tablets or capsules Patients who are unable to swallow erlotinib tablets are not eligible Patients who are unable to swallow tablets or have a gastrointestinal disease that could hinder the absorption of enzalutamide. Unable to swallow tablets. Inability to swallow intact tablets Unable or unwilling to swallow tablets or capsules Inability to swallow intact tablets Inability to swallow intact tablets Unable or unwilling to swallow tablets The subject is unable to swallow tablets Unable or unwilling to swallow tablets The subject is unable to swallow tablets Subject is unable to swallow or absorb oral tablets normally Unable to swallow tablets Patients who cannot swallow whole tablets (i.e. medication tablets) Unwilling or unable to swallow tablets BID The subject is unable to swallow tablets The subject is unable to swallow tablets Allergy to valacyclovir or unable to take oral tablets The subject is unable to swallow tablets The subject is unable to swallow capsules or tablets Unable or unwilling to swallow tablets BID Unable or unwilling to swallow tablets Unable to swallow tablets The subject is unable to swallow tablets Any condition causing an inability to swallow tablets. The subject is unable to swallow tablets Inability to swallow tablets The subject is unable to swallow tablets Inability to swallow tablets Inability to swallow tablets or use of a feeding tube Patients who are unable or unwilling to swallow tablets Participant is unable or unwilling to swallow tablets The subject is unable to swallow tablets The subject is unable to swallow capsules tablets The participant is unable to swallow capsules or tablets Patients who are unable to swallow tablets The subject is unable to swallow tablets The subject is unable to swallow tablets Subject is unable to swallow capsules or tablets Unable or unwilling to swallow BBI608, BBI503, or sorafenib capsules or tablets The subject is unable to swallow tablets The subject is unable to swallow tablets Inability to swallow tablets for everolimus arm Inability to swallow tablets Inability to swallow tablets