Faculty
Lindsey A. George, M.D.
Assistant Professor of Pediatrics (Hematology)
Department: Pediatrics
Graduate Group Affiliations
Contact information
Children's Hospital of Philadelphia
3501 Civic Center Blvd
Philadelphia, PA 19104
3501 Civic Center Blvd
Philadelphia, PA 19104
Publications
Education
BS (Biology)
Cornell University, 2004.
MD
State University at Buffalo School of Medicine and Biological Sciences, 2008.
MSTR (Translational Research)
University of Pennsylvania School of Medicine, 2021.
BS (Biology)
Cornell University, 2004.
MD
State University at Buffalo School of Medicine and Biological Sciences, 2008.
MSTR (Translational Research)
University of Pennsylvania School of Medicine, 2021.
Links
Search PubMed for articles
Perelman School of Medicine at the University of Pennsylvania website
Permanent linkSearch PubMed for articles
Perelman School of Medicine at the University of Pennsylvania website
Description of Clinical Expertise
hemostasis, hemophilia, gene therapy, gene editingDescription of Research Expertise
Dr. George is an Assistant Professor of Pediatrics at University of Pennsylvania and Director of Clinical In Vivo Gene Therapy at Children’s Hospital of Philadelphia. Her laboratory focuses on the development of gene-based therapies for coagulation disorders and on elucidating the molecular mechanisms underlying blood coagulation, with a particular emphasis on factor VIII biology and hemophilia A. Her studies on the regulation of factor VIII have led to the development of a next-generation gene therapy approach for hemophilia A that is currently being evaluated in a phase 2b clinical trial. Her laboratory also investigates the immunologic and molecular basis of unexplained clinical observations that have emerged from adeno-associated virus (AAV) gene therapy trials, with the goal of improving their safety and efficacy. In parallel with her laboratory research, Dr. George founded and directs the Clinical In Vivo Gene Therapy group at the Children’s Hospital of Philadelphia, which provides regulatory support for investigator-initiated studies, operational efforts for a large portfolio of interventional in vivo gene addition and editing trials and clinical infrastructure to safely and efficiently implement commercial in vivo gene therapies into clinical practice. She is a member of the National Academy of Medicine Emerging Leaders in Health and Medicine and past member of the Board of Directors of the American Society of Gene and Cell Therapy.Selected Publications
Samelson-Jones BJ, Martos-Rus C, Yrigollen CM, Tecedor L, Small JC, Matesanz SE, Watson CT, Vanden Heuvel AR, Carrig S, Yum SW, Brandsema JF, Lin KY, Wittlieb-Weber C, Viaene AN, Russo PP, Partington S, Huynh K, Seneviratne T, Juarez Rojas S, Doshi BS, Shieh PB, Flanigan KM, Frair EM, Nicolau S, Lawlor MW, Crudele JM, Davidson BL, George LA.: Cardiac Toxicity and Molecular Efficacy after Delandistrogene Moxeparvovec Gene Therapy for Duchenne Muscular Dystrophy. N Engl J Med Page: Epub ahead of print. July 2026.Morris JJ, Davidson RJ, Watson CT, George LA: Factor VIII Aurora: A Naturally Occurring Gain of Function FVIII Variant with Enhanced FIXa Affinity. Blood (in press), July 2026.
Sternberg AR, Watson CT, Davidson RJ, Uguen M, Kiialainen A and George LA: One-stage Assay Factor VIII Activity Reflects AAV-Derived Factor VIII Enhanced Thrombin Activation and Predicts Phenotype Blood (in press), June 2026.
Ahrens-Nicklas RC, Kotch C, Roche AM, Everett JK, Reddy S, Santi M, Madsen PJ, Martos-Rus C, Yrigollen CM, Small JC, McCague S, Davidson BL, Samelson-Jones BJ, Surrey LF, Li M, Ficicioglu C, Wang R, Bushman FD and George LA : Neuroepithelial Tumor Associated with AAV Integration After Intracisternal Magna Vector Delivery. New Engl J Med 394(12): 2126-2133, Jun 2026.
Morris JJ, Parsons NA, Wilhelm AR, Davidson RJ, Olenick LK, Watson CT, Vanden Heuvel A, George LA: Factor IXa and Factor X Influence Factor VIIIa Stability and Inactivation Mechanisms In Vitro and In Vivo. Blood 146(18): 2259-2271, Sep 2025 Notes: published with an accompanying editorial.
Musunuru K, Grandinette SA, Wang X, Hudson TR, Briseno K, Berry AM, Hacker JL, Hsu A, Silverstein RA, Hille LT, Ogul AN, Robinson-Garvin NA, Small JC, McCague S, Burke SM, Wright CM, Bick S, Indurthi V, Sharma S, Jepperson M, Vakulskas CA, Collingwood M, Keogh K, Jacobi A, Sturgeon M, Brommel C, Schmaljohn E, Kurgan G, Osborne T, Zhang H, Kinney K, Rettig G, Barbosa CJ, Semple SC, Tam YK, Lutz C, George LA, Kleinstiver BP, Liu DR, Ng K, Kassim SH, Giannikopoulos P, Alameh MG, Urnov FD, Ahrens-Nicklas RC: Patient-Specific In Vivo Gene Editing to Treat a Rare Genetic Disease. N Engl J Med 392(22): 2235-2243, Jun 2025.
Doshi BS, Markmann CA, Novak N, Rojas SJ, Davidson R, Chau JQ, Wang W, Carrig S, Rus CM, Samelson-Jones BJ, Small JC, Bhoj VG, George LA: Use of CD19-targeted Immune Modulation to Eradicate AAV Neutralizing Antibodies. Mol Ther 8(1): 177-7, Mar 2025 Notes: published with an accompanying editorial.
Sternberg AR, Martos-Rus C, Davidson RJ, Liu X, George LA.: Pre-clinical evaluation of an enhanced-function factor VIII variant for durable hemophilia A gene therapy in male mice. Nat Commun 15(1): 7193, Aug 2024.
George LA, Monahan PE, Eyster ME, Sullivan SK, Ragni MV, Croteau SE, Rasko JEJ, Recht M, Samelson-Jones BJ, MacDougall A, Jaworski K, Noble R, Curran M, Kuranda K, Mingozzi F, Chang T, Reape KZ, Anguela XM, High KA: Multiyear Factor VIII Expression after AAV Gene Transfer for Hemophilia A. N Engl J Med 385(21): 1961-1973, Nov 2021.
George LA, Sullivan SK, Giermasz G, Rasko JEJ, Samelson-Jones BJ, Ducore J, Cuker A, Sullivan LM, Majuddar S, Teitel J, McGuinn CE, Ragni MV, Luk AY, Hu Di, Wright JF, Chen Y, Liu Y, Wachtel K, Winters A, Tiefenbacher S, Arruda VR, van der Loo JCM, Zelenaia O, Takefman D, Carr ME, Couto LB, Anguela XM, High KA : Hemophilia B Gene Therapy with a High Specific Activity Factor IX Variant N Engl J Med 377(2): 2215-2227, Dec 2017.
Wilhelm AR, Parsons NA, Samelson-Jones BJ, Davidson RJ, Esmon CT, Camire RM, George LA: Activated protein C has a regulatory role in factor VIII function. Blood 137(18): 2532-2543, May 2021.
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