Daratumumab induced Minimal Residual Disease Negative Remission in CD 38 (dim) Positive Pediatric Acute Myeloid LeukemiaPronamee Borah1, Dinah Ng1, Nitin Dayal2, Sangeeta Pathak3, Rahul Naithani11Hematology and Bone Marrow Transplant Division, Max Superspecialty Hospital, Delhi, India2Department of Lab Medicine, Max Superspecialty Hospital, Delhi, India3Department of Transfusion medicine, Max Superspecialty Hospital, Delhi, IndiaConflicts of interest: None to declare.No financial support was obtained in this study.Text word count 815Brief running title: Daratumumab in Pediatric AMLKey Words: Daratumumab, AML, ChildrenTables: 0; Figures: 0

Children with congenital neutropenia frequently require hospitalization due to febrile neutropenia. Deficiency of Adenosine DeAminase -2(DADA-2) an autosomal recessive disorder caused by a mutation in CECR1 gene. It is an autoinflammatory disease presenting with autoimmunity and features of immunodeficiency. It usually presents in early childhood with recurrent stroke and vasculitis features. Here, we report a young male with CECR1 mutation presenting predominantly with neutropenia.

Early T cell precursor acute lymphoblastic leukemia is a relatively new, high risk subgroup of acute lymphoblastic leukemia characterized by unique immune-phenotype and disease biology. ETP ALL cells share similarities with hematopoietic stem cells and myeloid progenitor cells. These patients have lower rates of complete remission overall survival. Venetoclax is an orally bioavailable BCL 2 inhibitor. We report the treatment outcomes of 2 patients with ETP ALL who achieved MRD negative remission with short course of venetoclax.