A photo of Gregory Tiao.

Director, Division of General and Thoracic Surgery

Frederick C. Ryckman Chair in Pediatric Surgery

Surgical Director, Liver Transplantation

Associate Director, Pediatric Surgery Fellowship

Professor, UC Department of SurgeryUC Department of Pediatrics



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My Biography & Research


As a pediatric surgeon and a transplant surgeon, Dr. Tiao is involved in the care of children afflicted with biliary atresia from the time of presentation and diagnosis to the initial Kasai portoenterostomy to the liver transplant, when necessary. He sees the many challenges children and their families experience when diagnosed with this life threatening disease process. From that perspective, defining the basis of this disease process such that therapeutic strategies can be developed eliminating these complex interventions is his career goal. His short term goal is to develop an independent research laboratory investigating the pathogenesis of virus induced biliary atresia specifically seeking to determine the mechanistic basis of this disease so that new treatment strategies can be developed to salvage the native liver. 

Dr. Tiao's overarching hypothesis is that biliary atresia results from the infection of cholangiocytes by a virus triggering immune-mediated biliary obstruction. His focus is to determine the mechanisms used by RRV to infect cholangiocytes, how RRV undergoes replication within the cholangiocyte, and how infected cholangiocytes modify the microenvironment, activating the immune system resulting in biliary obstruction. Determination of the mechanistic basis of these inter-related events is essential to understanding the pathogenesis of virus induced BA. By focusing on the basis for the viral insult in the initiation of biliary atresia, he has defined an area of independence from Dr. Jorge Bezerra, his primary research mentor. 

Additional Languages


Clinical Interests

Biliary atresia

Academic Affiliation

Professor, UC Department of SurgeryUC Department of Pediatrics


Colorectal Center, General and Thoracic Surgery, Liver Care Center, Kidney Transplant Program, End Stage Renal Disease, Liver Tumor Program, Cincinnati Childrens Intestinal Care Center CCICC, Neurogastroenterology and Motility Disorders Center, Surgery - General and Thoracic, Pancreas Care Center, Liver Transplant Center, Best Doctors 2017-18, Fontan Management Clinic

My Locations

My Education

BS: Northwestern University, Evanston, IL, 1986.

MD: University of Illinois, Chicago, IL, 1990.

Residency: Loyola University, Maywood, IL, 1991-1992; Senior Resident, Department of Surgery, University of Cincinnati, Cincinnati, OH, 1995-1997; Chief Resident, Department of Surgery, University of Cincinnati, Cincinnati, OH, 1997-1998.

Fellowships: Research Fellow, University of Cincinnati, Cincinnati, OH, 1992-1995; Transplant Surgery Fellow, University of Cincinnati, Cincinnati, OH, 2000-2002; Pediatric Surgery Fellow, Los Angeles Children's Hospital, Los Angeles, CA, 1998-2000.

Certification: Pediatric Surgeon, 2000; Transplant Surgeon, 2002.

My Publications

Coots A, Donnelly B, Mohanty S, Tiao G. Rotavirus Infection of Human Cholangiocytes Parallels the Murine Model of Biliary Atresia. J Surg Res. 2012 Oct;177(2):275-81. 2012.

Meyers RL, Tiao GM, Dunn SP, Langham Jr, MR. Liver transplantation in the management of unresectable hepatoblastoma in children. Front Biosci (Elite Ed). 2012 Jan;E4:1293-302.

Shin CR, Nathan J, Alonso M, Yazigi N, Kocoshis S, Tiao G, Davies SM. Incidence of acute and chronic graft-versus-host disease and donor T-cell chimerism after small bowel or combined organ transplantation. J Pediatr Surg. 2011;46:1732-8.

Fernandez KS, Baum R, Fung B, Yeager N, Leonis MA, Wagner LM, Tiao G, Ross ME. Chemoresistant Hepatoblastoma in a Patient with Mosaic Trisomy 18 Treated with Orthotopic Liver Transplantation. Peditr Blood Cancer. 2011;56:498-500.

Superina R, Magee J, Brandt M, Healey P, Tiao G, Ryckman F, Karrer F, Iyer K, Fecteau A, West K, Burns R, Flake A, Hammin L, Lowell J, Dillon P, Columbani P, Ricketts R, Yun L, Moore J, Kasper W. Childhood Liver Research and Education Network. AnnSurg. 2011.

Bondoc A, Taylor J, Alonso M, Nathan, J, Wang Y, Balistreri W, Bezerra J, Ryckman F, Tiao G. The Beneficial Impact of Revision of Kasai Portoenterostomy for Biliary Atresia: An Institutional Study. AnnSurg. 2012;255(3):570-6.

Wang W, Donnelly B, Bondoc A, Mohanty SK, McNeal M, Ward R, Sestak K, Zheng S, Tiao G. The rhesus rotavirus gene encoding VP4 is a major determinant in the pathogenesis of biliary atresia in newborn mice. J Virol. 2011 Sep;85(17):9069-77.

Jafri M, Donnelly B, Bondoc A, Allen S, Tiao G. Cholangiocyte secretion of chemokines in experimental biliary atresia. J Pediatr Surg. 2009;44(3):500-7.

Bondoc AJ, Jafri MA, Donnelly B, Mohanty SK, McNeal MM, Ward, RL, Tiao GM. Prevention of the murine model of biliary atresia after live rotavirus vaccination of dams. J Pediatr Surg. 2009;44(8):1479-90.