Complex sentence: Provenge costs US $93,000 for the three required doses and has been shown to increase prostate cancer patients' survival, though it only confers a median survival advantage is 4.1 months.
Split into simpler sentences: Provenge costs US $93,000 for the three required doses. It has been shown to increase prostate cancer patients' survival, though it only confers a median survival advantage is 4.1 months.