Polaris Pharmaceuticals Inc. has submitted the first part of its rolling BLA to the FDA for lead product, ADI-PEG 20, for systemic treatment of patients with malignant pleural mesothelioma with non-epithelioid histology in combination with a platinum agent and pemetrexed. The BLA is supported by the pivotal phase III Atomic study in which pegargiminase (pegylated arginine deiminase/ADI-PEG 20) met the primary endpoint of a statistically significant improvement in overall survival and the secondary endpoint of a significant improvement in progression-free survival in patients with malignant pleural mesothelioma.