<prompt> All - Trans - Retinoic Acid is used in the treatment for:Acute Promyelocytic Leukemia PMLAcute Lymphoid Leukemia ALLChronic Myeloid Leukemia CMLChronic Lymphoid Leukemia CLL  <response>: All -Trans- Retinoic Acid is used in the treatment for Acute Promyelocytic Leukemia PML Ref: Harrisons Principles of Internal Medicine, 16th Edition, Page 636; Manual of Practical Medicine By R Alagappan, 3rd Edition, Page 347 