Chronic Leukemia, also known as adult chronic leukemia, is related to polycythemia vera and chronic neutrophilic leukemia. An important gene associated with Chronic Leukemia is STAT5A (Signal Transducer And Activator Of Transcription 5A), and among its related pathways/superpathways are Infectious disease and ERK Signaling. The drugs Fludarabine and Cyclophosphamide have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and bone, and related phenotypes are Increased shRNA abundance (Z-score > 2) and Resistant to vaccinia virus (VACV-A4L) infection