Tommy Ivanics, MD

Professional Titles

• Assistant Professor of Surgery
• Abdominal Transplant Surgeon

Recognitions

• ILTS Vanguard Award, International Liver Transplantation Society (ILTS) (2022)
  International research award recognizing exceptional scholarly contributions and excellence in liver transplantation research. Selected by the ILTS Executive Council based on the quality and impact of clinical research, with four recipients selected from 25 international candidates.

Research Interests

Publications

• Sayed BA, Tejedor M, Kathirvel M, Chadha R, Bhangui P, Rammohan A, Ghanekar A, Ivanics T, Kasahara M, Kim DS, Scatton O, Ghobrial M, Klair T, Rajakumar A, Bezinover D, Bittermann T, Don C, Surendran S, Hernandez-Alejandro R, Luzzi C, Tsien C, Di Benedetto F, Egawa H, Ascher N, Broering D, Burra P, Chen CL, Hirschfield G, Lerut J, Mas V, Taner T, Terrault N, Vyas MP, Wiggins C, Fung JJ, Olthoff K, Rela M, Heimbach J, Selzner N. Living liver donor safety: Early postoperative considerations of living liver donation guidelines from the ILTS-iLDLTG consensus conference. Liver Transpl. 2026 Jun 1;32(6):913-924. PubMed PMID: 41410428
• Li Z, Jones O, Magyar CTJ, Claasen MPAW, Ivanics T, Choi WJ, Rajendran L, Winter E, Bucur R, Rukavina N, Jaeckel E, Selzner N, Sayed BA, Ghanekar A, Cattral M, Sapisochin G. Living Donor Availability Improves Patient Survival in a North American Center: An Intention-to-treat Analysis. Ann Surg. 2026 Feb 1;283(2):326-334. PubMed PMID: 39041223
• Choi WJ, Ivanics T, Claasen M, Magyar CTJ, Li Z, Tabrizian P, Rocha C, Myers B, O'Kane GM, Reig M, Fàbrega JF, Holguín V, Parikh ND, Pillai A, Hunold TM, Vogel A, Patel MS, Singal AG, Tadros M, Feld JJ, Hansen B, Sapisochin G. Corrigendum to "Direct-acting antivirals lower mortality and recurrence in HCV-related hepatocellular carcinoma post liver resection: A multicenter international study" [Surgery 183 (2025) 109396]. Surgery. 2026 Aug;196:110228. PubMed PMID: 42215358
• Magyar CTJ, Jones O, Rajendran L, Carrique L, Lynch MJ, Li Z, Claasen MPAW, Ivanics T, Choi WJ, Gaviria F, Ghanekar A, Winter E, Bucur R, Shwaartz C, Reichman T, Sayed BA, Selzner M, Bhat M, Tsien C, Jaeckel E, Lilly LB, McGilvray ID, Cattral MS, Sapisochin G, Selzner N. Living Donor Liver Transplantation for Alcohol-related Liver Disease: An Intention-to-treat Analysis. Transplantation. 2025 Oct 1;109(10):1601-1610. PubMed PMID: 40269339
• Ciria R, Ivanics T, Aliseda D, Claasen M, Alconchel F, Gaviria F, Briceño J, Berardi G, Rotellar F, Sapisochin G. Liver transplantation for primary and secondary liver tumors: Patient-level meta-analyses compared to UNOS conventional indications. Hepatology. 2025 Jun 1;81(6):1700-1713. PubMed PMID: 39465987
• Patel MS, Shankar S, Tejedor M, Barbas AS, Kim J, Mao S, Ivanics T, Shaji Mathew J, Shingina A, Khan MQ, Wilson EA, Syn N, Alconchel F, Patel D, Liu J, Nasralla D, Mazzola A, Tanaka T, Victor DW, Yoon YI, Vinaixa C, Mi Kyaw AM, Galante A, Magistri P, Kathirvel M, Aliseda D, Moral K, Di Maira T, De Martin E, Chadha R, Hakeem AR, Bonaccorsi-Riani E, Rammohan A. Proceedings of the 29th Annual Congress of the International Liver Transplantation Society. Liver Transpl. 2025 Jul 1;31(7):945-955. PubMed PMID: 40062745
• Choi WJ, Ivanics T, Claasen M, Magyar CTJ, Li Z, Tabrizian P, Rocha C, Myers B, O'Kane GM, Reig M, Ferrer Fàbrega J, Holgin V, Parikh ND, Pillai A, Hunold TM, Vogel A, Patel MS, Singal AG, Tadros M, Feld JJ, Hansen B, Sapisochin G. Direct-acting antivirals lower mortality and recurrence in HCV-related hepatocellular carcinoma post liver resection: A multicenter international study. Surgery. 2025 Jul;183:109396. PubMed PMID: 40334495
• Gravely AK, Claasen MPAW, Ivanics T, Winter E, Peralta P, Selzner M, Sapisochin G. Factor V Serves as an Early Biomarker for Graft Loss After Liver Transplant: A Prospective Evaluation. Clin Transplant. 2025 Feb;39(2):e70086. PubMed PMID: 39869426
• Magyar CTJ, Li Z, Aceituno L, Claasen MPAW, Ivanics T, Choi WJ, Rajendran L, Sayed BA, Bucur R, Rukavina N, Selzner N, Ghanekar A, Cattral M, Sapisochin G. Temporal evolution of living donor liver transplantation survival-A United Network for Organ Sharing registry study. Am J Transplant. 2025 Feb;25(2):406-416. PubMed PMID: 39163907
• Choi WJ, Ivanics T, Rajendran L, Li Z, Gavira F, Jones O, Gravely A, Claasen M, Yoon PD, Ladak F, Rana M, Gotlieb N, Dini Y, Naccarato K, McCluskey S, Ferreira R, Msallak H, Chow J, Abreu P, Rabindranath M, Selvanathan C, Muaddi H, Magyar CTJ, Englesakis M, Beecroft R, Vogel A, O'Kane G, Hansen B, Sapisochin G. Comparative analysis of treatment modalities for solitary, small (=3 cm) hepatocellular carcinoma: A systematic review and network meta-analysis of oncologic outcomes. Surgery. 2025 Apr;180:108917. PubMed PMID: 39609218
• Ivanics T, Claasen MPAW, Samstein B, Emond JC, Fox AN, Pomfret E, Pomposelli J, Tabrizian P, Florman SS, Mehta N, Roberts JP, Emamaullee JA, Genyk Y, Hernandez-Alejandro R, Tomiyama K, Sasaki K, Hashimoto K, Nagai S, Abouljoud M, Olthoff KM, Hoteit MA, Heimbach J, Taner T, Liapakis AH, Mulligan DC, Sapisochin G, Halazun KJ. Living Donor Liver Transplantation for Hepatocellular Carcinoma Within and Outside Traditional Selection Criteria: A Multicentric North American Experience. Ann Surg. 2024 Jan 1;279(1):104-111. PubMed PMID: 37522174
• Shimada S, Yoshida A, Abouljoud M, Miyake K, Ivanics T, Shamaa T, Venkat D, Moonka D, Trudeau S, Reed E, Nagai S. Post-transplant outcomes and financial burden of donation after circulatory death donor liver transplant after the implementation of acuity circle policy. Clin Transplant. 2024 Jan;38(1):e15190. PubMed PMID: 37964683
• Wang BK, Chen AY, Prasadh J, Desai D, Shubin AD, Raschzok N, MacConmara M, Ivanics T, Cotter T, Hwang C, Shah JA, Mufti A, Vagefi PA, Hanish SI, Patel MS. A contemporary analysis of 20,086 deceased donor liver biopsies. World J Surg. 2024 Feb;48(2):437-445. PubMed PMID: 38310313
• Jones O, Claasen MPAW, Ivanics T, Choi WJ, Gavaria F, Rajendran L, Ghanekar A, Hirschfield G, Gulamhusein A, Shwaartz C, Reichman T, Sayed BA, Selzner M, Bhat M, Tsien C, Jaeckel E, Lilly L, McGilvray ID, Cattral MS, Selzner N, Sapisochin G. Pursuing living donor liver transplantation improves outcomes of patients with autoimmune liver diseases: An intention-to-treat analysis. Liver Transpl. 2024 Aug 1;30(8):785-795. PubMed PMID: 38619393
• Brière R, Émond M, Benhamed A, Blanchard PG, Drolet S, Habashi R, Golbon B, Shellenberger J, Pasternak J, Merchant S, Shellenberger J, La J, Sawhney M, Brogly S, Cadili L, Horkoff M, Ainslie S, Demetrick J, Chai B, Wiseman K, Hwang H, Alhumoud Z, Salem A, Lau R, Aw K, Nessim C, Gawad N, Alibhai K, Towaij C, Doan D, Raîche I, Valji R, Turner S, Balmes PN, Hwang H, Hameed SM, Tan JGK, Wijesuriya R, Tan JGK, Hew NLC, Wijesuriya R, Lund M, Hawel J, Gregor J, Leslie K, Lenet T, McIsaac D, Hallet J, Jerath A, Lalu M, Nicholls S, Presseau J, Tinmouth A, Verret M, Wherrett C, Fergusson D, Martel G, Sharma S, McKechnie T, Talwar G, Patel J, Heimann L, Doumouras A, Hong D, Eskicioglu C, Wang C, Guo M, Huang L, Sun S, Davis N, Wang J, Skulsky S, Sikora L, Raîche I, Son HJ, Gee D, Gomez D, Jung J, Selvam R, Seguin N, Zhang L, Lacaille-Ranger A, Sikora L, McIsaac D, Moloo H, Follett A, Holly, Organ M, Pace D, Balvardi S, Kaneva P, Semsar-Kazerooni K, Mueller C, Vassiliou M, Al Mahroos M, Fiore JF Jr, Schwartzman K, Feldman L, Guo M, Karimuddin A, Liu GP, Crump T, Sutherland J, Hickey K, Bonisteel EM, Umali J, Dogar I, Warden G, Boone D, Mathieson A, Hogan M, Pace D, Seguin N, Moloo H, Li Y, Best G, Leong R, Wiseman S, Alaoui AA, Hajjar R, Wassef E, Metellus DS, Dagbert F, Loungnarath R, Ratelle R, Schwenter F, Debroux É, Wassef R, Gagnon-Konamna M, Pomp A, Richard CS, Sebajang H, Alaoui AA, Hajjar R, Dagbert F, Loungnarath R, Sebajang H, Ratelle R, Schwenter F, Debroux É, Wassef R, Gagnon-Konamna M, Pomp A, Santos MM, Richard CS, Shi G, Leung R, Lim C, Knowles S, Parmar S, Wang C, Debru E, Mohamed F, Anakin M, Lee Y, Samarasinghe Y, Khamar J, Petrisor B, McKechnie T, Eskicioglu C, Yang I, Mughal HN, Bhugio M, Gok MA, Khan UA, Fernandes AR, Spence R, Porter G, Hoogerboord CM, Neumann K, Pillar M, Guo M, Manhas N, Melck A, Kazi T, McKechnie T, Jessani G, Heimann L, Lee Y, Hong D, Eskicioglu C, McKechnie T, Tessier L, Archer V, Park L, Cohen D, Parpia S, Bhandari M, Dionne J, ... 2023 Canadian Surgery Forum: Sept. 20-23, 2023. Can J Surg. 2023 Nov-Dec;66(6 Suppl 1):S54-S136. PubMed PMID: 38173057
• Berardi G, Ivanics T, Sapisochin G, Ratti F, Sposito C, Nebbia M, D'Souza DM, Pascual F, Tohme S, D'Amico FE, Alessandris R, Panetta V, Simonelli I, Del Basso C, Russolillo N, Fiorentini G, Serenari M, Rotellar F, Zimitti G, Famularo S, Hoffman D, Onkendi E, Lopez-Ben S, Caula C, Rompianesi G, Chopra A, Abu Hilal M, Torzilli G, Corvera C, Alseidi A, Helton S, Troisi RI, Simo K, Conrad C, Cescon M, Cleary S, Kwon CHD, Ferrero A, Ettorre GM, Cillo U, Geller D, Cherqui D, Serrano PE, Ferrone C, Mazzaferro V, Aldrighetti L, Kingham TP. Minimally Invasive Versus Open Liver Resections for Hepatocellular Carcinoma in Patients With Metabolic Syndrome. Ann Surg. 2023 Nov 1;278(5):e1041-e1047. PubMed PMID: 36994755
• Leonard-Murali S, Ivanics T, Nasser H, Tang A, Hammoud Z. Esophagectomies for Malignancy Among General and Thoracic Surgeons: A Propensity Score Matched National Surgical Quality Improvement Program Analysis Stratified by Surgical Approach. Am Surg. 2023 Nov;89(11):4891-4894. PubMed PMID: 34382445
• Choi WJ, Perez FM, Gravely A, Ivanics T, Claasen MPAW, Abraham L, Abreu P, Visser R, Gallinger S, Hansen BE, Sapisochin G. Preoperative neutrophil-to-lymphocyte ratio is prognostic for early recurrence after curative intrahepatic cholangiocarcinoma resection. Ann Hepatobiliary Pancreat Surg. 2023 May 31;27(2):158-165. PubMed PMID: 36804209
• Berardi G, Ratti F, Sposito C, Nebbia M, D'Souza DM, Pascual F, Dogeas E, Tohme S, D'Amico FE, Alessandris R, Simonelli I, Del Basso C, Russolillo N, Moro A, Fiorentini G, Serenari M, Rotellar F, Zimmitti G, Famularo S, Ivanics T, Hoffman D, Onkendi E, Essaji Y, Lopez Ben S, Caula C, Rompianesi G, Chopra A, Abu Hilal M, Torzilli G, Sapisochin G, Corvera C, Alseidi A, Helton S, Troisi RI, Simo K, Conrad C, Cescon M, Cleary S, Kwon CHD, Ferrero A, Ettorre GM, Cillo U, Geller D, Cherqui D, Serrano PE, Ferrone C, Mazzaferro V, Aldrighetti L, Kingham TP. Model to predict major complications following liver resection for HCC in patients with metabolic syndrome. Hepatology. 2023 May 1;77(5):1527-1539. PubMed PMID: 36646670
• Rajendran L, Murillo Perez CF, Ivanics T, Claasen MPAW, Hansen BE, Wallace D, Yoon PD, Sapisochin G. Outcomes of liver transplantation in non-alcoholic steatohepatitis (NASH) versus non-NASH associated hepatocellular carcinoma. HPB (Oxford). 2023 May;25(5):556-567. PubMed PMID: 36828740
• Ivanics T, Claasen MPAW, Patel MS, Giorgakis E, Khorsandi SE, Srinivasan P, Prachalias A, Menon K, Jassem W, Cortes M, Sayed BA, Mathur AK, Walker K, Taylor R, Heaton N, Mehta N, Segev DL, Massie AB, van der Meulen JHP, Sapisochin G, Wallace D. Outcomes after liver transplantation using deceased after circulatory death donors: A comparison of outcomes in the UK and the US. Liver Int. 2023 May;43(5):1107-1119. PubMed PMID: 36737866
• Rajendran L, Choi WJ, Muaddi H, Ivanics T, Feld JJ, Claasen MPAW, Castelo M, Sapisochin G. Association of Viral Hepatitis Status and Post-hepatectomy Outcomes in the Era of Direct-Acting Antivirals. Ann Surg Oncol. 2023 May;30(5):2793-2802. PubMed PMID: 36515750
• Shimada S, Shamaa T, Ivanics T, Kitajima T, Adhnan M, Collins K, Rizzari M, Yoshida A, Abouljoud M, Salgia R, Nagai S. Multiple Pretransplant Treatments for Patients Without Pathological Complete Response may Worsen Posttransplant Outcomes in Patients with Hepatocellular Carcinoma. Ann Surg Oncol. 2023 Mar;30(3):1408-1419. PubMed PMID: 36434482
• Shimada S, Shamaa T, Ivanics T, Miyake K, Kitajima T, Rizzari M, Yoshida A, Abouljoud M, Moonka D, Nagai S. Effects of the implementation of acuity circle policy on waitlist and post-transplant outcomes of liver re-transplantation. Clin Transplant. 2023 Jun;37(6):e14977. PubMed PMID: 36951511
• Choi WJ, Ivanics T, Gravely A, Gallinger S, Sapisochin G, O'Kane GM. Optimizing Circulating Tumour DNA Use in the Perioperative Setting for Intrahepatic Cholangiocarcinoma: Diagnosis, Screening, Minimal Residual Disease Detection and Treatment Response Monitoring. Ann Surg Oncol. 2023 Jun;30(6):3849-3863. PubMed PMID: 36808320
• Ivanics T, So D, Claasen MPAW, Wallace D, Patel MS, Gravely A, Choi WJ, Shwaartz C, Walker K, Erdman L, Sapisochin G. Machine learning-based mortality prediction models using national liver transplantation registries are feasible but have limited utility across countries. Am J Transplant. 2023 Jan;23(1):64-71. PubMed PMID: 36695623
• Kitajima T, Rajendran L, Lisznyai E, Lu M, Shamaa T, Ivanics T, Yoshida A, Claasen MPAW, Abouljoud MS, Sapisochin G, Nagai S. Lymphopenia at the time of transplant is associated with short-term mortality after deceased donor liver transplantation. Am J Transplant. 2023 Feb;23(2):248-256. PubMed PMID: 36804132
• Ivanics T, Limkemann A, Patel MS, Claasen MPAW, Rajendran L, Choi WJ, Shwaartz C, Selzner N, Lilly L, Bhat M, Tsien C, Selzner M, McGilvray I, Sayed B, Reichman T, Cattral M, Ghanekar A, Sapisochin G. Long-term outcomes of retransplantation after live donor liver transplantation: A Western experience. Surgery. 2023 Feb;173(2):529-536. PubMed PMID: 36334982
• Murillo Perez CF, Ivanics T, Claasen MPAW, Yoon P, Wallace D, Selzner N, Hirschfield GM, Hansen BE, Sapisochin G. Trends in liver transplantation for autoimmune liver diseases: a Canadian study. Can J Surg. 2022 Sep-Oct;65(5):E665-E674. PubMed PMID: 36223935
• Choi WJ, Ivanics T, Claasen MPAW, Gallinger S, Hansen B, Sapisochin G. Is it safe to administer neoadjuvant chemotherapy to patients undergoing hepatectomy for intrahepatic cholangiocarcinoma? ACS-NSQIP propensity-matched analysis. HPB (Oxford). 2022 Sep;24(9):1535-1542. PubMed PMID: 35474005
• Shamaa TM, Shamaa O, Crombez C, Konel JM, Kitajima T, Shimada S, Ivanics T, Mohamed A, Collins K, Nagai S, Yoshida A, Abouljoud M, Rizzari M. The use of normothermic liver preservation in combined liver and lung transplantation: A single-center experience. Am J Transplant. 2022 Sep;22(9):2261-2264. PubMed PMID: 35384271
• Shamaa TM, Kitajima T, Ivanics T, Shimada S, Yeddula S, Mohamed A, Rizzari M, Collins K, Yoshida A, Abouljoud M, Nagai S. Can Weather Be a Factor in Liver Transplant Waitlist and Posttransplant Outcomes? Analysis of United Network for Organ Sharing Registry. Transplant Proc. 2022 Oct;54(8):2254-2262. PubMed PMID: 36210193
• Sehjal J, Sharples LD, Keogh RH, Walker K, Prachalias A, Heaton N, Ivanics T, van der Meulen J, Wallace D. Time-varying Comparison of All-cause Mortality After Liver Transplantation Between Recipients With and Without Hepatocellular Carcinoma: A Population-based Cohort Study Using the United Kingdom Liver Transplant Registry. Transplantation. 2022 Nov 1;106(11):e464-e475. PubMed PMID: 36017919
• Abbassi F, Gero D, Muller X, Bueno A, Figiel W, Robin F, Laroche S, Picard B, Shankar S, Ivanics T, van Reeven M, van Leeuwen OB, Braun HJ, Monbaliu D, Breton A, Vachharajani N, Bonaccorsi Riani E, Nowak G, McMillan RR, Abu-Gazala S, Nair A, Bruballa R, Paterno F, Weppler Sears D, Pinna AD, Guarrera JV, de Santibañes E, de Santibañes M, Hernandez-Alejandro R, Olthoff K, Ghobrial RM, Ericzon BG, Ciccarelli O, Chapman WC, Mabrut JY, Pirenne J, Müllhaupt B, Ascher NL, Porte RJ, de Meijer VE, Polak WG, Sapisochin G, Attia M, Soubrane O, Weiss E, Adam RA, Cherqui D, Boudjema K, Zieniewicz K, Jassem W, Dutkowski P, Clavien PA. Novel Benchmark Values for Redo Liver Transplantation: Does the Outcome Justify the Effort?. Ann Surg. 2022 Nov 1;276(5):860-867. PubMed PMID: 35894428
• Ivanics T, Claasen MP, Patel MS, Hansen BE, Sapisochin G. Reply. Hepatology. 2022 Nov;76(5):E98-E99. PubMed PMID: 35435274
• Ivanics T, Murillo Perez CF, Claasen MPAW, Patel MS, Morgenshtern G, Erdman L, Shwaartz C, Rajendran L, O'Kane GM, Hansen BE, Cleary SP, Sapisochin G. Dynamic risk profiling of HCC recurrence after curative intent liver resection. Hepatology. 2022 Nov;76(5):1291-1301. PubMed PMID: 35178739
• Goto T, Ivanics T, Cattral MS, Reichman T, Ghanekar A, Sapisochin G, McGilvray ID, Sayed B, Lilly L, Bhat M, Selzner M, Selzner N. Superior Long-Term Outcomes of Adult Living Donor Liver Transplantation: A Cumulative Single-Center Cohort Study With 20 Years of Follow-Up. Liver Transpl. 2022 May;28(5):834-842. PubMed PMID: 34870890
• Ivanics T, Toso C, Ilyas SI, Sapisochin G. Transplant oncology in locally advanced intrahepatic cholangiocarcinoma: One more step on a long road. Am J Transplant. 2022 Mar;22(3):685-686. PubMed PMID: 34971482
• Muaddi H, Abreu P, Ivanics T, Claasen M, Yoon P, Gorgen A, Al-Adra D, Badenoch A, McCluskey S, Ghanekar A, Reichman T, Sapisochin G. The effect of perioperative packed red blood cells transfusion on patient outcomes after liver transplant for hepatocellular carcinoma. HPB (Oxford). 2022 Mar;24(3):370-378. PubMed PMID: 34325968
• Leonard-Murali S, Ivanics T, Nasser H, Tang A, Singer MC. Intraoperative Nerve Monitoring in Thyroidectomies for Malignancy: Does It Matter?. Am Surg. 2022 Jun;88(6):1187-1194. PubMed PMID: 33522279
• Ivanics T, Wallace D, Abreu P, Claasen MPAW, Callaghan C, Cowling T, Walker K, Heaton N, Mehta N, Sapisochin G, van der Meulen J. Survival After Liver Transplantation: An International Comparison Between the United States and the United Kingdom in the Years 2008-2016. Transplantation. 2022 Jul 1;106(7):1390-1400. PubMed PMID: 34753895
• Rajendran L, Ivanics T, Claasen MP, Muaddi H, Sapisochin G. The management of post-transplantation recurrence of hepatocellular carcinoma. Clin Mol Hepatol. 2022 Jan;28(1):1-16. PubMed PMID: 34610652
• Sapisochin G, Ivanics T, Heimbach J. Liver Transplantation for Intrahepatic Cholangiocarcinoma: Ready for Prime Time?. Hepatology. 2022 Feb;75(2):455-472. PubMed PMID: 34859465
• Ivanics T, Vianna R, Kubal CA, Iyer KR, Mazariegos GV, Matsumoto CS, Mangus R, Beduschi T, Abouljoud M, Fridell JA, Nagai S. Impact of the acuity circle model for liver allocation on multivisceral transplant candidates. Am J Transplant. 2022 Feb;22(2):464-473. PubMed PMID: 34403552
• Acuna SA, Zhang W, Yoon PD, Ivanics T, Zhu MP, Claasen M, Zuckerman J, Ghanekar A, Cattral MS, Sapisochin G. Right Lobe Versus Left Lobe Living Donor Liver Transplantation: A Systematic Review and Meta-analysis of Donor and Recipient Outcomes. Transplantation. 2022 Dec 1;106(12):2370-2378. PubMed PMID: 35802908
• Ivanics T, Wallace D, Claasen MPAW, Patel MS, Brahmbhatt R, Shwaartz C, Prachalias A, Srinivasan P, Jassem W, Heaton N, Cattral MS, Selzner N, Ghanekar A, Morgenshtern G, Mehta N, Massie AB, van der Meulen J, Segev DL, Sapisochin G. Low utilization of adult-to-adult LDLT in Western countries despite excellent outcomes: International multicenter analysis of the US, the UK, and Canada. J Hepatol. 2022 Dec;77(6):1607-1618. PubMed PMID: 36170900
• Giorgakis E, Ivanics T, Khorsandi SE, Wallace D, Burdine L, Jassem W, Mathur AK, Heaton N. Disparities in the Use of Older Donation After Circulatory Death Liver Allografts in the United States Versus the United Kingdom. Transplantation. 2022 Aug 1;106(8):e358-e367. PubMed PMID: 35642976
• Ivanics T, Claasen MP, Al-Adra D, Sapisochin G. Experience with solid organ transplantation in patients with previous immunotherapy treatment is still limited but this is changing: The survey-based view of the global transplant society. Transpl Immunol. 2022 Aug;73:101637. PubMed PMID: 35667542
• Shimada S, Ivanics T, Kitajima T, Shamaa T, Rizzari M, Collins K, Yoshida A, Abouljoud M, Moonka D, Zhang J, Lu M, Nagai S. Improvements in liver transplant outcomes in patients with HCV/HIV coinfection after the introduction of direct-acting antiviral therapies. Transpl Infect Dis. 2022 Apr;24(2):e13808. PubMed PMID: 35157334
• Ivanics T, Claasen MP, Patel MS, Rajendran L, Shwaartz C, Raschzok N, Yoon P, Murillo Perez CF, Hansen BE, Muaddi H, Moulton CA, Reichman T, Ghanekar A, Gallinger S, McGilvray I, Cleary SP, Sapisochin G. Long-term outcomes of laparoscopic liver resection for hepatocellular carcinoma: A propensity score matched analysis of a high-volume North American center. Surgery. 2022 Apr;171(4):982-991. PubMed PMID: 34742570
• Ivanics T, Nelson W, Patel MS, Claasen MPAW, Lau L, Gorgen A, Abreu P, Goldenberg A, Erdman L, Sapisochin G. The Toronto Postliver Transplantation Hepatocellular Carcinoma Recurrence Calculator: A Machine Learning Approach. Liver Transpl. 2022 Apr;28(4):593-602. PubMed PMID: 34626159
• Bergquist JR, Thiels CA, Shubert CR, Ivanics T, Habermann EB, Vege SS, Grotz TE, Cleary SP, Smoot RL, Kendrick ML, Nagorney DM, Truty MJ. Perception versus reality: A National Cohort Analysis of the surgery-first approach for resectable pancreatic cancer. Cancer Med. 2021 Sep;10(17):5925-5935. PubMed PMID: 34289264
• Ivanics T, Zimnicki K, Ahmad H, Saab I, Liu V, Tepper D, Siddiqui A. Fat grafting: A novel technique for difficult ostomy management. Surgery. 2021 Sep;170(3):939-941. PubMed PMID: 33820652
• Ivanics T, Shubert CR, Muaddi H, Claasen MPAW, Yoon P, Hansen BE, McCluskey SA, Sapisochin G. Blood Cell Salvage and Autotransfusion Does Not Worsen Oncologic Outcomes Following Liver Transplantation with Incidental Hepatocellular Carcinoma: A Propensity Score-Matched Analysis. Ann Surg Oncol. 2021 Oct;28(11):6816-6825. PubMed PMID: 33778907
• Ivanics T, Salinas-Miranda E, Abreu P, Khalvati F, Namdar K, Dong X, Deniffel D, Gorgen A, Erdman L, Jhaveri K, Haider M, Veit-Haibach P, Sapisochin G. A Pre-TACE Radiomics Model to Predict HCC Progression and Recurrence in Liver Transplantation: A Pilot Study on a Novel Biomarker. Transplantation. 2021 Nov 1;105(11):2435-2444. PubMed PMID: 33982917
• Leonard-Murali S, Ivanics T, Kwon DS, Han X, Steffes CP, Shah R. Local resection versus radical surgery for parathyroid carcinoma: A National Cancer Database analysis. Eur J Surg Oncol. 2021 Nov;47(11):2768-2773. PubMed PMID: 34229923
• Nagai S, Suzuki Y, Kitajima T, Ivanics T, Shimada S, Kuno Y, Shamaa MT, Yeddula S, Samaniego M, Collins K, Rizzari M, Yoshida A, Abouljoud M. Paradigm Change in Liver Transplantation Practice After the Implementation of the Liver-Kidney Allocation Policy. Liver Transpl. 2021 Nov;27(11):1563-1576. PubMed PMID: 34043869
• Abreu P, Ivanics T, Jiang K, Chen K, E Hansen B, Sapisochin G, Ghanekar A. Novel biomarker for hepatocellular carcinoma: high tumoral PLK-4 expression is associated with better prognosis in patients without microvascular invasion. HPB (Oxford). 2021 Mar;23(3):359-366. PubMed PMID: 32800449
• Ivanics T, Rizzari M, Moonka D, Al-Kurd A, Delvecchio K, Kitajima T, Elsabbagh AM, Collins K, Yoshida A, Abouljoud M, Nagai S. Retransplantation outcomes for hepatitis C in the United States before and after direct-acting antiviral introduction. Am J Transplant. 2021 Mar;21(3):1100-1112. PubMed PMID: 32794649
• Halazun KJ, Rosenblatt RE, Mehta N, Lai Q, Hajifathalian K, Gorgen A, Brar G, Sasaki K, Doyle MBM, Tabrizian P, Agopian VG, Najjar M, Ivanics T, Samstein B, Brown RS Jr, Emond JC, Yao F, Lerut J, Rossi M, Mennini G, Iesari S, Finkenstedt A, Schaefer B, Mittler J, Hoppe-Lotichius M, Quintini C, Aucejo F, Chapman W, Sapisochin G. Dynamic a-Fetoprotein Response and Outcomes After Liver Transplant for Hepatocellular Carcinoma. JAMA Surg. 2021 Jun 1;156(6):559-567. PubMed PMID: 33950167
• Nasser H, Ivanics T, Varban OA, Finks JF, Bonham A, Ghaferi AA, Carlin AM. Comparison of early outcomes between Roux-en-Y gastric bypass and sleeve gastrectomy among patients with body mass index = 60 kg/m(2). Surg Endosc. 2021 Jun;35(6):3115-3121. PubMed PMID: 32572625
• Lehrberg A, Davis MB, Baidoun F, Petersen L, Susick L, Jenkins B, Chen Y, Ivanics T, Rakitin I, Bensenhaver J, Proctor E, Nathanson SD, Newman LA. Outcome of African-American compared to White-American patients with early-stage breast cancer, stratified by phenotype. Breast J. 2021 Jul;27(7):573-580. PubMed PMID: 33738890
• Ivanics T, Nasser H, Kandagatla P, Leonard-Murali S, Jones A, Abouljoud M, Gupta AH, Woodward A. Prescribing Habits of Providers and Risk Factors for Nonadherence to Opioid Prescribing Guidelines. Am Surg. 2021 Jul;87(7):1039-1047. PubMed PMID: 33295200
• Ivanics T, Williams P, Nasser H, Leonard-Murali S, Schwartz S, Lin JC. Contemporary management of chronic indwelling inferior vena cava filters. J Vasc Surg Venous Lymphat Disord. 2021 Jan;9(1):163-169. PubMed PMID: 32721588
• Wallace D, Cowling TE, Suddle A, Gimson A, Rowe I, Callaghan C, Sapisochin G, Ivanics T, Claasen M, Mehta N, Heaton N, van der Meulen J, Walker K. National time trends in mortality and graft survival following liver transplantation from circulatory death or brainstem death donors. Br J Surg. 2021 Dec 17;109(1):79-88. PubMed PMID: 34738095
• Kitajima T, Henry M, Ivanics T, Yeddula S, Collins K, Rizzari M, Yoshida A, Abouljoud MS, Nagai S, Moonka D. Incidence and Risk Factors for Fatal Graft-versus-host Disease After Liver Transplantation. Transplantation. 2021 Dec 1;105(12):2571-2578. PubMed PMID: 33449608
• Ivanics T, Leonard-Murali S, Mouzaihem H, Moonka D, Kitajima T, Yeddula S, Shamaa MT, Rizzari M, Collins K, Yoshida A, Abouljoud M, Nagai S. Extreme hyponatremia as a risk factor for early mortality after liver transplantation in the MELD-sodium era. Transpl Int. 2021 Dec;34(12):2856-2868. PubMed PMID: 34580929
• Iavarone M, Invernizzi F, Ivanics T, Mazza S, Zavaglia C, Sanduzzi-Zamparelli M, Fraile-López M, Czauderna C, Di Costanzo G, Bhoori S, Pinter M, Manini MA, Amaddeo G, Yunquera AF, Piñero F, Blanco Rodríguez MJ, Anders M, Aballay Soteras G, Villadsen GE, Yoon PD, Cesarini L, Díaz-González Á, González-Diéguez ML, Tortora R, Weinmann A, Mazzaferro V, Romero Cristóbal M, Crespo G, Regnault H, De Giorgio M, Varela M, Prince R, Scudeller L, Donato MF, Wörns MA, Bruix J, Sapisochin G, Lampertico P, Reig M. Regorafenib Efficacy After Sorafenib in Patients With Recurrent Hepatocellular Carcinoma After Liver Transplantation: A Retrospective Study. Liver Transpl. 2021 Dec;27(12):1767-1778. PubMed PMID: 34388851
• Claasen MPAW, Ivanics T, Gravely A, Sapisochin G. Prognostic risk scores for liver transplantation: game changers or statistical artworks?. Hepatobiliary Surg Nutr. 2021 Aug;10(4):553-557. PubMed PMID: 34430542
• Al-Kurd A, Kitajima T, Delvecchio K, Tayseer Shamaa M, Ivanics T, Yeddula S, Yoshida A, Rizzari M, Collins K, Abouljoud M, Nagai S. Short recipient warm ischemia time improves outcomes in deceased donor liver transplantation. Transpl Int. 2021 Aug;34(8):1422-1432. PubMed PMID: 34170584
• Ivanics T, Shwaartz C, Claasen MPAW, Patel MS, Yoon P, Raschzok N, Wallace D, Muaddi H, Murillo Perez CF, Hansen BE, Selzner N, Sapisochin G. Trends in indications and outcomes of liver transplantation in Canada: A multicenter retrospective study. Transpl Int. 2021 Aug;34(8):1444-1454. PubMed PMID: 33977568
• Nasser H, Ivanics T, Carlin AM. Factors influencing the choice between laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass. Surg Endosc. 2021 Aug;35(8):4691-4699. PubMed PMID: 32909206
• Ivanics T, Abreu P, De Martin E, Sapisochin G. Changing Trends in Liver Transplantation: Challenges and Solutions. Transplantation. 2021 Apr 1;105(4):743-756. PubMed PMID: 32910093
• Gorgen A, Ivanics T, Sapisochin G. Liver transplantation for unresectable colorectal metastasis: a new hope. Hepatobiliary Surg Nutr. 2020 Oct;9(5):665-668. PubMed PMID: 33163520
• Moeckli B, Ivanics T, Claasen M, Toso C, Sapisochin G. Recent developments and ongoing trials in transplant oncology. Liver Int. 2020 Oct;40(10):2326-2344. PubMed PMID: 33021344
• Leonard-Murali S, Nasser H, Ivanics T, Genaw J. Predictors of postoperative emergency department visits after laparoscopic bariatric surgery. Surg Obes Relat Dis. 2020 Oct;16(10):1483-1489. PubMed PMID: 32636172
• Sapisochin G, Ivanics T, Subramanian V, Doyle M, Heimbach JK, Hong JC. Multidisciplinary treatment for hilar and intrahepatic cholangiocarcinoma: A review of the general principles. Int J Surg. 2020 Oct;82S:77-81. PubMed PMID: 32380231
• Nasser H, Ivanics T, Ranjal RS, Leonard-Murali S, Genaw J. Perioperative Outcomes of Robotic Versus Laparoscopic Sleeve Gastrectomy in the Super-obese. J Surg Res. 2020 May;249:34-41. PubMed PMID: 31918328
• Nasser H, Ivanics T, Leonard-Murali S, Stefanou A. Risk Factors for Surgical Site Infection After Laparoscopic Colectomy: An NSQIP Database Analysis. J Surg Res. 2020 May;249:25-33. PubMed PMID: 31918327
• Ivanics T, Nasser H, Shepard A, Lee A. Aortic and superior mesenteric artery embolectomy after paradoxical embolism. J Vasc Surg. 2020 Mar;71(3):1027-1028. PubMed PMID: 32089198
• Leonard-Murali S, Nasser H, Ivanics T, Shakaroun D, Genaw J. Perioperative Outcomes of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy in Patients with Diabetes Mellitus: an Analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) Database. Obes Surg. 2020 Jan;30(1):111-118. PubMed PMID: 31598899
• Ivanics T, Patel MS, Erdman L, Sapisochin G. Artificial intelligence in transplantation (machine-learning classifiers and transplant oncology). Curr Opin Organ Transplant. 2020 Aug;25(4):426-434. PubMed PMID: 32487887
• Nasser H, Ivanics T, Leonard-Murali S, Shakaroun D, Genaw J. Perioperative outcomes of laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in super-obese and super-super-obese patients: a national database analysis. Surg Obes Relat Dis. 2019 Oct;15(10):1696-1703. PubMed PMID: 31530452
• Ivanics T, Proctor E, Chen Y, Ali H, Severson D, Nasser H, Colbert S, Susick L, Walker E, Petersen L, Bensenhaver J, Loutfi R, Nathanson SD, Newman LA. Evaluation of a Multidisciplinary Team Approach for Generating Survivorship Care Plan Treatment Summaries in Patients With Breast Cancer. J Oncol Pract. 2019 May;15(5):e467-e474. PubMed PMID: 30946641
• Nasser H, Ivanics T, Shakaroun D, Lin J. Severe phlebitis-like abnormal reaction following great saphenous vein cyanoacrylate closure. J Vasc Surg Venous Lymphat Disord. 2019 Jul;7(4):578-582. PubMed PMID: 31078516
• Hernandez MC, Yang L, Leiting JL, Sugihara T, Bergquist JR, Ivanics T, Graham R, Truty MJ. Successful Secondary Engraftment of Pancreatic Ductal Adenocarcinoma and Cholangiocarcinoma Patient-Derived Xenografts After Previous Failed Primary Engraftment. Transl Oncol. 2019 Jan;12(1):69-75. PubMed PMID: 30273859
• Ivanics T, Nasser H, Leonard-Murali S, Genaw J. Dehydration risk factors and impact after bariatric surgery: an analysis using a national database. Surg Obes Relat Dis. 2019 Dec;15(12):2066-2074. PubMed PMID: 31601534
• Hernandez MC, Bergquist JR, Leiting JL, Ivanics T, Yang L, Smoot RL, Nagorney DM, Truty MJ. Patient-Derived Xenografts Can Be Reliably Generated from Patient Clinical Biopsy Specimens. J Gastrointest Surg. 2019 Apr;23(4):818-824. PubMed PMID: 30756315
• Nasser H, Ivanics T, Leonard-Murali S, Genaw J. A case report of an adjustable gastric band erosion and migration into the jejunum resulting in biliary obstruction. Int J Surg Case Rep. 2019;64:139-142. PubMed PMID: 31655283
• Nasser H, Ivanics T, Leonard-Murali S, Shakaroun D, Woodward A. Emphysematous gastritis: A case series of three patients managed conservatively. Int J Surg Case Rep. 2019;64:80-84. PubMed PMID: 31622931
• Ivanics T, Bergquist JR, Liu G, Kim MP, Kang Y, Katz MH, Perez MVR, Thomas RM, Fleming JB, Truty MJ. Patient-derived xenograft cryopreservation and reanimation outcomes are dependent on cryoprotectant type. Lab Invest. 2018 Jul;98(7):947-956. PubMed PMID: 29520054
• Bergquist JR, Shah HN, Habermann EB, Hernandez MC, Ivanics T, Kendrick ML, Smoot RL, Nagorney DM, Borad MJ, McWilliams RR, Truty MJ. Adjuvant systemic therapy after resection of node positive gallbladder cancer: Time for a well-designed trial? (Results of a US-national retrospective cohort study). Int J Surg. 2018 Apr;52:171-179. PubMed PMID: 29496648
• Bergquist JR, Ivanics T, Shubert CR, Habermann EB, Smoot RL, Kendrick ML, Nagorney DM, Farnell MB, Truty MJ. Type of Resection (Whipple vs. Distal) Does Not Affect the National Failure to Provide Post-resection Adjuvant Chemotherapy in Localized Pancreatic Cancer. Ann Surg Oncol. 2017 Jun;24(6):1731-1738. PubMed PMID: 28070725
• Bergquist JR, Ivanics T, Storlie CB, Groeschl RT, Tee MC, Habermann EB, Smoot RL, Kendrick ML, Farnell MB, Roberts LR, Gores GJ, Nagorney DM, Truty MJ. Implications of CA19-9 elevation for survival, staging, and treatment sequencing in intrahepatic cholangiocarcinoma: A national cohort analysis. J Surg Oncol. 2016 Sep;114(4):475-82. PubMed PMID: 27439662
• Ivanics T, Bergquist JR, Shubert CR, Smoot RL, Habermann EB, Truty MJ. Small Cell Carcinoma of the Pancreas: A Surgical Disease. Pancreas. 2016 Nov;45(10):1461-1466. PubMed PMID: 27171519
• Bergquist JR, Groeschl RT, Ivanics T, Shubert CR, Habermann EB, Kendrick ML, Farnell MB, Nagorney DM, Truty MJ, Smoot RL. Mixed hepatocellular and cholangiocarcinoma: a rare tumor with a mix of parent phenotypic characteristics. HPB (Oxford). 2016 Nov;18(11):886-892. PubMed PMID: 27546172
• Sanjeevi S, Ivanics T, Lundell L, Kartalis N, Andrén-Sandberg Å, Blomberg J, Del Chiaro M, Ansorge C. Impact of delay between imaging and treatment in patients with potentially curable pancreatic cancer. Br J Surg. 2016 Feb;103(3):267-75. PubMed PMID: 26572509
• Insulander J, Sanjeevi S, Haghighi M, Ivanics T, Analatos A, Lundell L, Del Chiaro M, Andrén-Sandberg Å, Ansorge C. Prognosis following surgical bypass compared with laparotomy alone in unresectable pancreatic adenocarcinoma. Br J Surg. 2016 Aug;103(9):1200-8. PubMed PMID: 27250937

Professional Memberships

• American Society of Transplant Surgeons (ASTS), Member
• Americas Hepato-Pancreato-Biliary Association (AHPBA), Member
• International Liver Transplantation Society (ILTS), Member

Practice Locations

• University of Colorado Hospital
• Children's Hospital Colorado

• Transplant Medicine Center

Specialty Information

• Surgery, Board Certification (2024)
• Transplant Surgery (2026)
• AHPBA Hepatopancreatobiliary Surgery Fellowship Certificate, Certificate (2026)
• TAC Clinical Transplant Fellowship – Kidney, Liver, Pancreas Transplantation and HPB Surgery, Certificate (2026)

• Surgery - Transplant Surgery
• Surgery
• Surgery - Pancreas Transplant Surgery
• Surgery - Living Liver Donation
• Surgery - Living Kidney Donation
• Surgery - Liver Transplant Surgery
• Surgery - Major Liver Surgery (Hepatobiliary)
• Surgery - Laparoscopic Donor Nephrectomy
• Surgery - Kidney Transplant Surgery
• Surgery - Robotic Surgery
• Surgery - Complex Abdominal/Open Surgery
• Surgery - Laparoscopic Surgery