Donald L. Siegel, MD, PhD

Pathology and Laboratory Medicine
Accepting new patients
Sees patients age 18 and up
Penn Pathology and Laboratory Medicine HUP
Headshot of Donald L. Siegel, MD, PhD
Penn Medicine Provider

About me

  • Director, Division of Transfusion Medicine and Therapeutic Pathology, Hospital of the University of Pennsylvania
  • Director, Clinical Cell and Vaccine Production Facility, Penn Medicine
  • Professor of Pathology and Laboratory Medicine at the Hospital of the University of Pennsylvania

My areas of clinical expertise include transfusion medicine, blood banking, apheresis, hematopoietic stem cell collection/processing, and cGMP manufacture of cellular therapies for phase I first-in-human clinical trials. My translational lab research interests are in the engineering of recombinant antibodies for development of human and canine immunotherapies.

My education and training

  • Medical School: University of Pennsylvania School of Medicine
  • Residency: University of Pennsylvania Health System
  • Fellowship: University of Pennsylvania Health System

Spoken languages

English
English

Insurance accepted

Please contact the practice and/or the member services department of your insurance company for specific details before receiving services. Providers may participate in some, but not all, products offered by a health plan; providers may also accept plans at some practice locations but not others.

Locations

Penn Medicine hospital privileges

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
Dr. Siegel is a Penn Medicine physician.

Qualifications and experience

Treatments and conditions

Research

Publications

Bhoj, V.G., Kaminski, M., Zhao, H., Jackson, K., Montgomery, R.A., Ali, N., Mangiola, M., Spitzer, T.R., Safa, K., Pattanayak, V., Taj, R., Joy Chiu, J., Bui, T.-M., Sonnenberg, E.M., Markmann, J.F., Milone, M.C., June, C.H., Siegel, D.L., Fraietta, J.A., Gonzalez, V., Locci, M., Palmer, M., Monos, D., Hwang, W.-T .Sledge, T., Bridges, N.D., Goldstein, J.S., Odim, J., Sweet, S.C., Besharatian, B.D., Hussain, S.M., Brown, N.K., Kamoun, M., Garfall, A.L., Naji, A. Kidney transplant in two highly-sensitized candidates post-CAR T cell therapy , N Engl J Med, in press: 2026


Barber-Rotenberg, J.S., Haas, A.R., Aggarwal, C., O'Hara, M.H., Hexner, E., Pequignot, E., Dowd, E., Ndeupen, S., Thai, E., Chen, F., Oner, B.S., Czuczman, C., Gonzalez, V.E., Fraietta, J.A., Hwang, W.-T., Chew, A., Jadlowsky, J.K., Marshall, A., Shea, K.-M., Jiang, Y., Cosey, A., Ferthio, R., Plesa, G., Siegel, D.L., Young, R.M., Sheppard, N.C., Albelda, S.M., June, C.H., Tanyi, J.L. Phase I study of autologous T cells bearing fully human chimeric antigen receptors targeting mesothelin in mesothelin-expressing cancers , Molecular Therapy, in press: 2026


93., Scholler, J., Song, A., Deshmukh, M., Song, D., Gabunia, K., Ji, M., Fan, T.J., June, C.H., Siegel, D.L. Engineering a juxtamembrane-targeting CAR T-cell against mesothelin: A novel binder resilient to shed antigen for enhanced efficacy against ovarian and pancreatic cancer , Frontiers in Immunology, 17:1805950: 2026


Gu, M., Read, K., Bhardwaj, V., Carvalho, E., Nardo, D., Shayne, J., Shukla, D., Liu, W., Siegel, D.L., Sheppard, N., Milone, M., Cohen, A., Garfall, A., Riley, J.L. Rab5 improves CAR T cell efficacy via reducing fratricide and maintaining surface CAR levels , Journal of Experimental Medicine, 223 (6): e20252564: 2026


Paruzzo, L. Chong, E.R., Chong, E.A., Zheng, Z., Guruprasad, P., Landsburg, D.J., Nasta, S.D., Stella, F., Ramasubramanian, R., de Souza, V.B., Alkhatib, M.H., Ho, M., Imparato, A., Chen, G.M., Siegel, D.L., Plesa, G., Dai, A., Mackey, S., Das, P., Michener, P., Jadlowsky, J., Bushman, F.D., Patel, V., Carturan, A., Napier, E.B., Gonzalez, V.E., Jarocha, D., Xu, R., Levine, B.L., Porazzi, P., Frey, N., Porter, D.L., Svoboda, J., Fraietta, J.A., June, C.H., Schuster, S.J., Ruella, M. Decade-long persistence of CD19 CAR T-cells in B-cell lymphomas , Nature Medicine, in press: 2026


Noll, J.H., Dersh, D., Li, J.Y., Hemani, H., Lavorando, M., Bartoszek, R., Amses, K., Jain, A., Minehart, J., Ho, M., Ramirez-Fernandez, A., Paruzzo, L., Shestov, M., Camerini, E., Peters, Huang, X., Loren, A., Woyach, J., Goronzy, J., Kater, A.P., Ruella, M., Byrd, J., Powell, D., Gill S., Porter, D., Schuster, S., Bushman, F.D., Siegel, D.L., Levine, B.L., June, C.H., Frey, N., Cohen, A., Garfall, A., Long, M., Maus, M., Weng, N.-P., Diorio, C., Fraietta, J.A. T-cell immunosenescence limits CD19 CAR T-cell function in chronic lymphocytic leukemia , Blood, in press: 2026


Chen, G.M., Gering, D., Satulovsky, J., Datta, S., Lai, P., Karar, J., Gonzalez, V.E., Alexander, K., Chew, A., Jadlowsky, J.K., Ruella, M., Paruzzo, L., Amses, K.R., Rech, A.J., Stadtmauer, E.A., Frey, N.V., Hexner, E.O., Porter, D.L., Cohen, A.D., Gill, S.I., Garfall, A.L., Schuster, S.J., Mo, K.C., Liang, S.I., Spasic, M., Levine, B.L., Siegel, D.L., Ramírez- Fernández, A., Mackall, C.L., Bushman, F.D., Good, Z., E. John Wherry, E.J., June, C.H., Jain, A., Cabanski, C., Fraietta, J.A. Predictive biomarkers of response to chimeric antigen receptor (CAR) T-cell therapy for pan-hematologic cancer , Nature Biomedical Engineering: 2026


Ramírez-Fernández, A., Bear, A., Kamali, E., Bartoszek, R., Ho, M., Chen, G., Dersh, D., Cordoba-Espejo, L., Liu, J., Deng, M., Velasco-Sidro, M., Jain, A., Noll, J.H., Hopkins, C., Koucky, O., Minehart, J., Dimitri, A., Williams, E., Lavorando, M., Segura-Tudela, A., Scholler, J., Barber-Rotenberg, J., Jadlowsky, J., Powell, D., Gonzalez, V., Siegel, D.L., Bruce Levine, B., Lotze, M., June, C., Riley, J., Vonderheide, R., Herbst, F., Fraietta, J.A. A modular γδ TCR-T platform combining KRAS pMHC targeting with re-dosable mRNA engager redirection , J. Hematology Oncology, in press: 2026


Jadlowsky, J.K., Hexner, E.O., Marshall, A., Grupp, S.A., Frey, N.V., Riley, J.L., Veloso, E., McConville, H., Rogal, W., Czuczman, C., Hwang, W.-T., Li, Y., Leskowitz, R.M., Farrelly, O., Karar, J., Christensen, S., Barber-Rotenberg, J., Gaymon, A., Aronson, N., Bernstein, W., Melenhorst, J.J., Roche, A.M., Everett, J.K., Zolnoski, S.A., McFarland, A.G., Reddy, S., Petrichenko, A., Cook, E.J., Lee, C., Gonzalez, V.E., Alexander, K., Kulikovskaya, I., Ramírez-Fernández, A., Minehart, J.C., Ruella, M., Gill, S.I., Schuster, S.J., Cohen, A.D., Garfall, A.L., Shah, P.D., Porter, D.L., Maude, S.L., Levine, B.L., Siegel, D.L., Chew, A., McKenna, S., Lledo, L., Davis, M.M, Plesa, G., Herbst, F., Stadtmauer, E.A., Tebas, P., DiNofia, A., Haas, A., Haas, N.B., Myers, R., O’Rourke, D.M., Svoboda, J., Tanyi, J.L., Aplenc, R., Jacobson, J.M., Ko, A.H., Cohen, R.B., June, C.H., Bushman, F.D., Fraietta, J.A. Long-term safety analysis in 783 patients treated with lentiviral or gammaretroviral gene-modified T-cells , Nature Medicine, doi.10.1038/s41591-024-03478-6: 2025


Aznar, M.A., Good, C.R., Barber-Rotenberg, J.S., Agarwal, S., Wilson, W., Watts, A., Zhang, Z., Gonzales, D., Donahue, G., Hwang, W.-T., Rennels, A.K., Rech, A.J., Kuramitsu, S., Glastad, K.M., Alexander, K.A., Plesa, G., Brennan, A., Siegel, D.L., Tanyi, J., Haas, A., Drew Torigian, D., Nadolski, G., Gonzalez, V.E., Hexner, E.O., Fraietta, J.A., Jadlowsky, J.K., Young, R.M., Berger, S.L., June, C.H., O’Hara, M.H. Clinical and molecular dissection of CAR T cell resistance in pancreatic cancer , Cell Reports Medicine, doi/10.1016/j.xcrm.2025.102301: 2025


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