Fellowship Directors


John Fung MD PhD/Piotr Witkowski MD PhD



John Renz MD PhD,

SUNY Downstate Health Science University,

Brooklyn , NY 

2000- 2012 

Michael Millis MD

University of Chicago, IL

Current Transplant Surgery Fellows 

Angelica Perez

Gutierrez MD 


Ragheed Saoud MD 

Dr. Perez Gutierrez came to us as fully trained general surgeon from Mexico City and also after her 2 years of research fellowship in transplantation at University of Pittsburg. Once accomplished 2 year ASTS fellowship with us, she has stayed with us for 1 year fellowship in pancreatic islet transplantation. 

Dr. Saoud came as a fully trained urologist from Lebanon. 

He accomplished with us 1 year of training in kidney and pancreas transplantation and then pursed his fellowship in urologic oncology and robotic surgery with Dr. Shalhav at our Institution.

All the best Ragheed. 

Braden Juengel M MD 


Kumar Jayant MD PhD
2020- 2022 

Dr. Juengel joined us following  his general surgery residency training at University of Illinois Medical Center. Welcome!

Dr. Jayant was trained in India and UK, where obtained his PhD in hepatobiliary surgery. He matched through ASTS matching system. We are looking forward to having Kumar on board!

Conferences and Workshops

  • American Transplant Congress, May 2020 ​, (Dr Perez- Gutierrez)

  • Winter ASTS Symposium, Miami, FL, January 2020. (Dr Perez- Gutierrez)

  • Laparoscopic Donor Nephrectomy Workshop, August 2019, Houston TX (Dr. Perez-Gutierrez)


  • Annual AST Fellows Symposium, September 2019 (for first year fellows) (Dr.Juengel)


  • Annual AST Fellows Symposium, September 2018 (for first year fellows) (Dr.Saud)

Fellow's Publications

  • Ezzelarab MB, Perez-Gutierrez A, Humar A, Wijkstrom M, Zahorchak AF, Lu-Casto L, Wang YC, Wiseman RW, Minervini M, Thomson AW. Preliminary assessment of the feasibility of autologous myeloid-derived suppressor cell infusion in non-human primate kidney transplantation. Transpl Immunol. 2019. Oct; 56: 101225.

  • Perez-Gutierrez A, Metes DM, Lu L, Hariharan S, Thomson AW, Ezzelarab MB. Characterization of eomesodermin and T-bet expression by allostimulated CD8+ T cells of healthy volunteers and kidney transplant patients in relation to graft outcome. Clin Exp Immunol. 2018 Nov;194(2):259-272

  • Lee JC, Olaitan OK, Lopez-Soler R, Renz JF, Millis JM, Gottlieb LJ. Expanding the envelope: the posterior rectus sheath-liver vascular composite allotransplant. Plast Reconstr Surg. 2013 Feb; 131(2): 209e-218e.

  • Ragab A, Lopez-Soler R, Oto A, Testa G. Correlation between 3D-MRCP and intra-operative findings in right liver donors. Hepatobiliary Surg Nutr. 2013 Feb;2(1):7-13. 

  • Byam J, Renz J, Millis JM. Liver transplantation for hepatocellular carcinoma. Hepatobiliary Surg Nutr. 2013 Feb;2(1):22-30. 

  • Mao Y, Yang H, Xu H, Lu X, Sang X, Du S, Zhao H, Chen W, Xu Y, Chi T, Yang Z, Cai J, Li H, Chen J, Zhong S, Mohanti SR, Lopez-Soler R, Millis JM, Huang J, Zhang H. Golgi protein 73 (GOLPH2) is a valuable serum marker for hepatocellular carcinoma. Gut. 2010 Dec; 59(12):1687-93. 

Fellow's Presentations 

  • Perez Gutierrez A, Baker T, Becker YT, Witkowski P, Fung J.  A,  Simultaneous Heart/Liver/Kidney Transplant : The Challenge Is In The Choreography. Winter ASTS Symposium, Miami, FL 2020.

  • Logan Galansky, Joshua Aizen, Ciro Andolfi, Ragheed Saoud, Osmanuddin Ahmed, Arieh Shalhav. The effect of selective angioembolization on renal function for iatrogenic vascular lesions after partial nephrectomy: a matched case-control study. American Urology Association, 2019

  • Perez Gutierrez A, Donor Reactive Eomesderminhi CD8+ T Cells Are Significantly Upregulated Early after Transplant in Kidney Transplant Patients without Rejection. ATC 2019. 

Previous Transplant Fellows


Omar Hussain MD


Jerome Byam MD,

United Medical Center, Washington DC

2011- 2013 

Qi Li MD

2010- 2012 

Oyedolamu K Olaitan MD

Rush University Medical Center, Chicago, IL

2009- 2011

Raynold Lopez-Soler MD PhD

Albany Medical Center, NY



Bejon T Maneckshama MD

Hartford Hospital Medical Center, CT











Transplantation Institute

Clinical  Research Center


Islet and Kidney Transplantation

Manager, Lindsay Basto RN MSN

tel. (773) 702-2504

fax (773) 926-0671


Islet and Cell Processing and Research

Manager, Karolina Golab, PhD

Transplantation Institute

University of Chicago Medicine

5841 S. Maryland Avenue

MC 5026, J-517

Chicago IL 60637

Polish-American Transplant Center

Clinical Coordinator

Patrycja Ulijaszyk RN

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© 2018 by Kajetan Witkowski