<prompt> Answer this question truthfullyWhat is agranulocytosis and what causes it?  <response>: <reason> Agranulocytosis can be congenital or acquired. Common causes of acquired agranulocytosis include: Medications Clozapine Deferiprone Sulfasalazine Ticlopidine Rituximab Quinine Trimethoprim-sulfamethoxazoleChemotherapy Bone marrow transplant Systemic lupus erythematosus SLE Rheumatoid arthritis HIV Hepatitis Leukemia Myelodysplasia 