Mesothelioma News Polaris Group Announces Positive Results for Phase 2 Study of ADI-PEG … By Mesothelioma News October 28, 2013 October 28, 2013 Mesothelioma News There were 68 subjects randomized, 44 to ADI-PEG 20 plus best supportive care and 24 to best supportive care only. Polaris Group Announces Positive Results for Phase 2 Study of ADI-PEG … Overlooked lymph nodes in rib cage have prognostic power for mesothelioma patients