EB1089 is a Vitamin D analog 50 to 200 times more potent than Vitamin D in inhibiting growth and inducing differentiation with half the hypercalcemic activity. Studies have found EB1089 to be more potent than vitamin D in inhibiting growth and inducing differentiation of some cancer cell lines. EB1089 enhances radio sensitivity of H460 and A549 non-small cell lung cancer (NSCLC) cells.