Although scientists are continuing to research cutaneous lymphomas, so far no single factor has been proven to cause this disease. There is no supportive research indicating that this is a genetic or hereditary disease. Studies have also failed to show a connection between chemical exposure, environment, pesticides, radiation, allergies or occupational environments. Exposure to Agent Orange may be a risk factor for developing CTCL-MF in veterans of the Vietnam War, but no direct cause-effect relationship has been established.