Autosomal Dominant Secondary Polycythemia, also known as autosomal dominant secondary erythrocytosis, is related to duodenal somatostatinoma and erythrocytosis, familial, 4. An important gene associated with Autosomal Dominant Secondary Polycythemia is EGLN1 (Egl-9 Family Hypoxia Inducible Factor 1), and among its related pathways/superpathways are Nuclear events mediated by NFE2L2 and Cellular responses to stimuli. Related phenotypes are Increased shRNA abundance (Z-score > 2) and muscle