During treatment If all of the study criteria are met and subject is enrolled in the study, you will start taking the study drug at least 7 days before radiation therapy. You will take the study drug once a day by mouth. You should take the study drug at about the same time each day. If you forget to take a dose, take the missed dose as soon as you remember, as long as it is at least 12 hours before the next dose is due. If it is less than 12 hours until the next dose, do not take the dose you have missed. If you throw up within 30 minutes after you take the study drug, you should take another dose, and use medicine to stop or relieve your vomiting per your doctor's instruction. You will continue to take the study drug for a total duration of one year. The study will be stopped if your disease progresses or there is excessive toxicity. Your participation in the study will be for one year. However, we will continue to follow your disease status, general health and possible treatment-related side effects after one year and for as long as possible.