Camila O. dos Santos, Ph.D.^1*, Duonan Yu, PhD^1*, Julio Amigo, Ph.D.^2*, Eugene Kandros^1*, Eric R Valentine^1*, Suresh Shelat, MD^3*, Louis C Dore^4*, Yu Yao^1*, Janine D' Souza^1*, Saghi Ghaffari, MD, PhD⁵, Barry H. Paw, M.D., Ph.D.², Jordan S Orange, MD, PhD^6* and Mitchell J. Weiss, M.D., Ph.D.¹

¹Division of Hematology, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA
²Division of Hematology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA
³Abramson Research Center, Children's Hosp. of Philadelphia, Philadelphia, PA
⁴Integrated Graduate Program, Feinberg School of Medicine,, Northwestern University,, Chicago, IL
⁵Department of Molecular, Cell & Developmental Biology, Department of Gene and Cell Medicine, New York, NY
⁶Division of Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA

Katrin E Rhodes^1*, Christos Gekas^1*, Laurraine Gereige^1*, Hildur Helgadottir^2*, Roberto Ferrari^1*, Siavash Kurdistani^1*, Encarnacion Montecino-Rodriguez^1*, Rhonda Basel-Duby^3*, Eric Olson^3*, Stuart H. Orkin, MD⁴, Matteo Pellegrini, Ph.D.^5* and Hanna Mikkola, MD, PhD⁶

¹UCLA, Los Angeles, CA
²Dana-Farber Cancer Institute, Boston
³University of Texas Southwestern Medical Center, Dallas
⁴Dana-Farber Cancer Institute, Boston, MA
⁵Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, CA
⁶MCDB/ICSBM/UCLA, Los Angeles, CA

Hui Huang^1*, Ming Yu¹, Tyler B Moran^2*, Nathan Tu^3*, Thomas E Akie^1* and Alan B Cantor¹

¹Pediatrics Hematology-Oncology, Children's Hospital Boston, Boston, MA
²Molecular and Integrative Physiology, University of Illinois, Urbana, IL
³Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA

Matilda Rehn, MSc^1*, Kristian Reckzeh, MSc^1*, André Olsson, PhD^1*, Håkan Axelson, PhD^2* and Jörg Cammenga, MD¹

¹Molecular Medicine and Gene Therapy, BMC A12, Lund Stem Cell Center, Lund University, Lund, Sweden
²Dept. Laboratory Medicine, University Hospital MAS, Lund University, Malmö, Sweden

George Souroullas^1*, Jessica Salmon^2*, David J. Curtis, MD, PhD² and Margaret Goodell, PhD^3*

¹Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
²Rotary Bone Marrow Rsch. Lab., RMH Research Foundation, Parkville, VIC, Australia
³Stem Cells and Regenerative Medicine, Baylor College of Medicine, Houston, TX

Gang Huang^*, Shannon Elf^*, Xiaomei Yan^*, Lan Wang^*, Yan Liu, Goro Sashida^*, Alex Gural^*, Silvia Menendez^*, Jennifer Lee^*, Youyang Yang^*, Xinyang Zhao^* and Stephen D. Nimer

Memorial Sloan Kettering Cancer Center, New York, NY

Andre M. Pilon, MS^1*, Elliott H. Margulies, PhD^2*, Hatice Ozel Abaan^2*, Amy Werner-Allen^2*, Tim M. Townes, PhD³, Abbie M. Frederick^1*, Dewang Zhou, PhD^3*, Patrick G. Gallagher, MD⁴ and David M. Bodine, PhD¹

¹Nhgri, Hematopoiesis Section, GMBB, Bethesda, MD
²Nhgri, Genome Informatics Section, GTB, Rockville, MD
³University of Alabama at Birmingham, Birmingham, AL
⁴School of Medicine, Yale University, New Haven, CT

Duncan Carradice^1*, Judith E Layton^1*, Joan K Heath^2* and Graham J Lieschke^1*

¹Cancer & Haematology Division, Walter & Eliza Hall Institute of Medical Research, Parkville, Australia
²Colon Molecular & Cell Biology Laboratory, Ludwig Institute for Cancer Research, Parkville, Australia