Primary Hypereosinophilic Syndrome, also known as neoplastic hypereosinophilic syndrome, is related to loeffler endocarditis and hypereosinophilic syndrome. An important gene associated with Primary Hypereosinophilic Syndrome is ETV6 (ETS Variant Transcription Factor 6), and among its related pathways/superpathways are Infectious disease and RAF/MAP kinase cascade. Affiliated tissues include bone marrow and lung, and related phenotypes are Decreased viability and Increased shRNA abundance (Z-score > 2)