Research Summary

Dr. Ryutaro Hirose is a transplant surgeon who performs liver, kidney and pancreas transplants.

Hirose's research interests include the induction of immunologic tolerance, immune monitoring and cancer in transplant patients. He has received research grants from the National Kidney Foundation and UCSF School of Medicine.

Hirose earned his medical degree from Vagelos College of Physicians and Surgeons, the medical school of Columbia University. He completed clinical research training at UCSF as a resident in general surgery and a fellow in molecular medicine and transplantation surgery.

Hirose is involved in teaching medical students as well as residents and fellows in surgery. He serves as associate director of UCSF's general surgery residency program.

Education

2019 - Diversity, Equity, and Inclusion Champion Training, University of California
Residency, - School of Medicine, University of California, San Francisco

Selected Publications

  1. Masotti M, Johnson DY, Golbus JR, Hirose R, Daw J, Parker WF, Snyder JJ, Lyden GR. Improvements in Survival after Delisting without Transplant Signal Potential Data Quality Issue. Am J Transplant. 2026 Aug 03. View on PubMed
  2. Amara D, Melehy A, Feng J, Rodgers A, Haikal N, Agopian V, Hirose R, Stock P, Salehi A, Bui AAT, Syed S. Automated Computed Tomography-based Liver Steatosis Risk Stratification of Deceased Organ Donors Using Real-world Data. Transplantation. 2026 Jul 01; 110(7):e1475-e1484. View on PubMed
  3. Amara D, Smullin CP, Melehy A, Parekh J, Greenstein S, Foley D, Sudan D, Bui AAT, Agopian V, Stock PG, Farmer D, Hirose R. Determinants of early readmission following liver transplantation: A National analysis of the TransQIP database. Liver Transpl. 2026 Apr 21. View on PubMed
  4. Amara D, Grieco A, Covarrubias K, Liu Y, Stock PG, Foley D, Greenstein S, Hirose R, Parekh JR. Comparison of Laparoscopic and Hand-assisted Live Donor Nephrectomy: An Analysis of NSQIP Transplant. Transplant Direct. 2026 May; 12(5):e1946. View on PubMed
  5. Amara D, Melehy A, Parekh J, Greenstein S, Foley D, Sudan D, Agopian V, Bui AAT, Stock P, Hirose R. Prophylactic Ureteral Stenting in Kidney Transplantation: A Multivariable and Propensity Score-matched Analysis of 3407 Recipients From NSQIP Transplant. Transplantation. 2026 May 01; 110(5):e1100-e1111. View on PubMed
  6. Lim TY, Steggerda JA, Trivedi H, Luu M, Vipani A, Adjei MA, Singh J, Zhou K, Kwong A, Tincopa M, Vodkin I, Ajmera V, Mehta N, Freise CE, Yilma M, Hirose R, Kuo A, Wisel SA. Outcomes from Referral to Transplant for Patients with MASLD: A California Liver Network Study. J Clin Med. 2025 Nov 04; 14(21). View on PubMed
  7. Amara D, Grieco A, Foley D, Greenstein S, Hirose R, Parekh J. Urinary Tract Infection After Kidney Transplantation: Some Centers are Doing Better Than Others. Clin Transplant. 2025 Nov; 39(11):e70357. View on PubMed
  8. Amara D, Nunez M, Parekh J, Greenstein S, Foley D, Stock P, Hirose R. Left Ventricular Ejection Fraction and Previous Cardiac Revascularization: Impact on Patient Survival, Graft Survival, and Complications in Kidney Transplant Recipients. Transplant Direct. 2025 Jul; 11(7):e1802. View on PubMed
  9. Takahashi H, Satake Y, Shimizu S, Fujihara S, Takano S, Fukasawa S, Park K, Toba N, Yano T, Nagamatsu H, Hirose R, Toyama-Kousaka M, Ota S, Morikawa M, Shinkai M. Trends in Group A Streptococcus Pharyngitis and Co-Infection with Severe Acute Respiratory Syndrome Coronavirus 2: A Retrospective Observational Study. Medicina (Kaunas). 2025 May 21; 61(5). View on PubMed
  10. Lyden GR, Valapour M, Wood NL, Gentry SE, Israni AK, Hirose R, Snyder JJ. Impact of the lung allocation system score modification by blood type on US lung transplant candidates. Am J Transplant. 2025 Jun; 25(6):1208-1217. View on PubMed
  11. Patzer RE, Schold JD, Hirose R, Cowger JA, Urbanski M, Budev M, Cardenas A, Giles K, Lawrence AC, Lentine KL, Maxmeister C, Oduor H, Mohan S, Organ Procurement and Transplantation Network Data Advisory Committee Pre-Waitlisting Data Collectio. Transforming transplantation access: A federal directive for comprehensive pre-waitlisting data collection. Am J Transplant. 2025 May; 25(5):900-907. View on PubMed
  12. Lin S, Dimarakis I, Minami E, Bakthavatsalam R, Bhattacharya R, Stempien-Otero A, Lin Y, Karatasakis A, Khorsandi M, Chou-Wu E, Gimferrer I, Golub MY, Fishbein D, Cheng RK, Hirose R, Sturdevant M, Pal JD. Highly sensitized patients listed for heart after liver transplantation with or without domino. J Heart Lung Transplant. 2025 01; 44(1):125-128. View on PubMed
  13. Hoffman D, Ganjouei AA, Hernandez FR, Ifuku K, Miller P, Glencer A, Corvera C, Kirkwood K, Alseidi A, Adam M, Maker A, Hirose K, Hirose R, Nakakura EK. Graft choice in pancreatectomy with vascular resection: equivalent safety in selected patients. J Gastrointest Surg. 2024 11; 28(11):1799-1804. View on PubMed
  14. Miller PN, Romero-Hernandez F, Calthorpe L, Wang JJ, Kim SS, Corvera CU, Hirose K, Kirkwood KS, Hirose R, Maker AV, Alseidi AA, Adam MA, Kim GE, Tempero MA, Ko AH, Nakakura EK. ASO Visual Abstract: Long-Duration Neoadjuvant Therapy with FOLFIRINOX Yields Favorable Outcomes for Patients Who Undergo Surgery for Pancreatic Cancer. Ann Surg Oncol. 2024 Jul 27. View on PubMed
  15. Miller PN, Romero-Hernandez F, Calthorpe L, Wang JJ, Kim SS, Corvera CU, Hirose K, Kirkwood KS, Hirose R, Maker AV, Alseidi AA, Adam MA, Kim GE, Tempero MA, Ko AH, Nakakura EK. Long-Duration Neoadjuvant Therapy with FOLFIRINOX Yields Favorable Outcomes for Patients Who Undergo Surgery for Pancreatic Cancer. Ann Surg Oncol. 2024 Sep; 31(9):6147-6156. View on PubMed
  16. Miller JM, Zaun D, Wood NL, Lyden GR, McKinney WT, Hirose R, Snyder JJ. Adjusting for race in metrics of organ procurement organization performance. Am J Transplant. 2024 Aug; 24(8):1440-1444. View on PubMed
  17. Meier RPH, Nunez M, Syed SM, Feng S, Tavakol M, Freise CE, Roberts JP, Ascher NL, Hirose R, Roll GR. DCD liver transplant in patients with a MELD over 35. Front Immunol. 2023; 14:1246867. View on PubMed
  18. Yilma M, Cogan R, Shui AM, Neuhaus JM, Light C, Braun H, Mehta N, Hirose R. Community-level social vulnerability and individual socioeconomic status on liver transplant referral outcome. Hepatol Commun. 2023 07 01; 7(7). View on PubMed
  19. Yilma M, Dalal N, Wadhwani SI, Hirose R, Mehta N. Geographic disparities in access to liver transplantation. Liver Transpl. 2023 09 01; 29(9):987-997. View on PubMed
  20. Snyder JJ, Schaffhausen CR, Hart A, Axelrod DA, Dils D, Formica RN, Gaber AO, Hunt HF, Jones J, Mohan S, Patzer RE, Pinney SP, Ratner LE, Slaker D, Stewart D, Stewart ZA, Van Slyck S, Kasiske BL, Hirose R, Israni AK. Stakeholders' perspectives on transplant metrics: the 2022 Scientific Registry of Transplant Recipients' consensus conference. Am J Transplant. 2023 07; 23(7):875-890. View on PubMed

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