Must be able to take oral medication without crushing, dissolving or chewing tablets Able to swallow oral medication as an intact dosage form Able to take oral medication without crushing, dissolving or chewing tablets Patients must be able to consume oral medication in the form of tablets or solution Must be able to take oral medication without crushing, dissolving or chewing capsules Participant is able to take an oral medication. Participant is able to take oral medication. Able to swallow oral medication. Patients must be able to consume oral medication Not able to take oral medication Patient must be able to take oral/enteral medication Unable to receive oral medication For oral cohorts: subject is able to swallow the oral capsule medication. Able to swallow oral medication Able to take oral medication without crushing, dissolving or chewing tablets Must be able to swallow ribociclib and oral aromatase inhibitor, such as letrozole Able to swallow oral medication as an intact dosage form Able to swallow oral medication Able to take oral medication Subjects must be able to consume oral medication Be able to take oral medication Unable to swallow medication Patients must be able to consume oral medication Unable to swallow medication or suspected malabsorption Must be able to take oral medication Patient should be able to take oral medication (dasatinib must be swallowed whole) The patient is unable to swallow capsules and/or has a surgical or anatomical condition that precludes swallowing and absorbing oral medication on an ongoing basis (for oral therapy only). Subjects who are able to take oral medication. Unable to swallow oral medication. Patients must be able to swallow oral medication Able to swallow and absorb the medication Able to swallow oral medication Subjects must be able to consume oral medication Able to swallow or have medication administered through a gastrostomy tube (G-tube) and absorb the medication Patient is unable to swallow or keep down oral medication Able to take oral medication and has no history of gastric surgery or pathology Able to swallow or have medication administered through a gastrostomy (G)-tube and absorb the medication Patients must be able to swallow medication by oral route The patient must be able to swallow oral medication. Able to swallow oral medication All study participants must be able to swallow oral medication For orally administered drugs, the patient must be able to swallow and tolerate oral medication and must have no known malabsorption syndrome Patients who are unable to swallow oral medication are not eligible Are able to swallow oral medication. Participants must be able to take oral medication Patients must be able to swallow oral medication The patient is unable to swallow capsules and/or has a surgical or anatomical condition that precludes swallowing and absorbing oral medication on an ongoing basis (for oral therapy only) Patients must be able to take oral medication without crushing, dissolving or chewing tablets Is unable to swallow oral medication Able to take oral medication Subjects must be able to consume oral medication Patient is not able to swallow oral medication Able to swallow and absorb the medication Patient is not able to swallow oral medication Patient should be able to take oral medication (dasatinib must be swallowed whole) Patients must be able to take oral medication without crushing, dissolving, or chewing tablets Patient is not able to swallow oral medication Unable to swallow medication Unable to swallow medication; suspected malabsorption Able to swallow medication Subject must be able to swallow medication Must be able to ingest, absorb and tolerate oral medication Able to take oral medication Patient must be able to tolerate oral medication Must be able to take oral medication without crushing, dissolving or chewing tablets Patients must be able to take oral medication. Patients with epilepsy requiring permanent oral medication Able to tolerate oral medication Able to swallow medication Must be able to take oral medication without crushing, dissolving or chewing tablets Be able to swallow medication