 If you are found to be eligible to take part in this study, you will take LEE011 capsules by mouth 1 time on Days 1-21 of each cycle. You will take LEE011 capsules whole, at about the same time each morning, with or without food, with at least 1 cup 8 ounces of water. Do not chew or open the capsules unless a member of the study staff tells you to do so. 