*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
Reuven Schore, MD
Center for Cancer and Blood Disorders
Children’s National Hospital
Associate Professor of Pediatrics
The George Washington University School of Medicine and Health Sciences
111 Michigan Avenue NW
Washington, DC 20010
Phone: 202-476-2800
Fax: 202-476-5685
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Running title: Diagnostic pitfalls of JMML
Key words: JMML, NUP98::NSD1, PTPN11, AML, NS-MPD