*Correspondence to:
Jinjun Cheng, MD, PhD
Pathology and Laboratory Medicine Division
Children’s National Hospital
Room 1629, 111 Michigan Avenue NW
Washington, DC 20010-2970
Telephone: 202-476-4311
Fax: 202-476-4030
Email: jcheng2@childrensnational.org
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Running title: BCL11B copy gain in Mixed Phenotypic Acute Leukemia
Key words: MPAL, BCL11B, FLT3-ITD, leukemia