This study is for subjects who have been diagnosed with cancer and will be receiving a drug called everolimus as part of your usual care. The purpose of this study is to see if treating patients with dexamethasone mouthwash at the start of cancer treatment will lower the chance of getting painful mouth sores.
This is an open-label, nonrandomized, dose escalation and dose expansion, safety, efficacy, PK and PD evaluation study of SAR439859 administered orally as monotherapy, then in combination with palbociclib. The study will last approximately 26 months, and participation in the study may last 4 to 8 weeks or longer. The length of participation in this study will depend on how well subjects tolerate the study drug and the condition of their disease.