CSF3 and neutropenia: Neutropenia persisted with the initial treatment due to which the patient was switched to a regimen on ATG/cyclosporine/prednisone. ANC improved to 0.1/mL. G-CSF was added, and the ANC gradually improved to 5.2/mL. Prednisone was tapered down to 5mg by the 19 week which led to neutropenia relapse. Prednisone’s dose was increased, and slower taper was tried by which ANC stabilized