Tipifarnib 125 mg/m2 twice a day for 6 weeks concurrent with radiation therapy followed by a two week rest period. Treatment cycles were 4 weeks (maximum tolerated dose (MTD) estimation period – first 8 weeks). Tipifarnib was continued at 200 mg/m2 twice a day, starting at course 3, for 21 days followed by 7 days of rest. Treatment repeats every 4 weeks for up to 24 additional courses. Local radiation (RT) was initiated 1-2 days following the first dose of tipifarnib and was administered once daily, five days per week , at 180 cGy/day fractions for six weeks to a total dose of 5580 cGy. The 125 mg/m2 dose level was determined to be the MTD and therefore the recommended phase II dose. Of the 40 participants treated at this dose level, six were enrolled on the phase I part of the study and 34 were enrolled to the phase II.