Abdominal Transplant Fellowship »  Faculty »  Andrew M. Posselt, M.D., Ph.D.

Andrew M. Posselt, M.D., Ph.D., FACS

Professor of Surgery
Division of Transplant Surgery
Director, Pancreatic Islet Transplant Program

Contact Information

Academic Office
(415) 514-5606
andrew.posselt@ucsf.edu
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  • Stanford University, B.S., Biology, 1981-85
  • University of Pennsylvania, M.D., Medicine, 1985-93
  • University of Pennsylvania, Ph.D., Immunology, 1989-93
  • University of California, San Francisco, Resident, Medicine, 1993-96
  • University of California, San Francisco, Resident, Surgery, 1996-00
  • University of California, San Francisco, Fellow, Transplant Surgery, 2000-02
  • American Board of Internal Medicine, 1996
  • American Board of Surgery, 2002
  • Pancreatic Islet Transplantation Program
  • Bariatric Surgery Center
  • ABO-Incompatible Kidney Transplant Program
  • Autologous Islet Cell Transplantation
  • Bariatric Surgery (Laparoscopic and Open)
  • Bile Duct Injuries
  • Bile Duct Strictures
  • Choledochal Cyst Disease
  • End-Stage Kidney Disease
  • Fulminant Hepatic Failure
  • Hepatitis B
  • Hepatitis C
  • Hepatocellular Carcinoma (Primary Liver Cancer)
  • Islet Cell Transplantation
  • Kidney Transplantation
  • Laparoscopic Donor Nephrectomy
  • Liver Cysts
  • Liver Transplantation
  • Nonalcoholic Fatty Liver Disease
  • Pancreas Transplantation
  • Pediatric Kidney Transplantation
  • Pediatric Liver Transplantation
  • Portal Hypertension
  • Assessment of long-term clinical outcomes in kidney donors
  • Clinical outcomes of bariatric surgery in patients with end-stage kidney or liver disease
  • Metabolic and biochemical consequences of bariatric surgery
  • Transplantation of pancreatic islets as treatment for type 1 diabetes mellitus

Dr. Andrew Posselt is an attending multi-organ transplant surgeon at UCSF and Director of the ABO-Incompatible Kidney Transplant Program as well as Co-director of the Pancreatic Islet Transplant Program and the Bariatric Surgery Program.  Dr. Posselt specializes in adult and pediatric kidney, liver and pancreas transplantation; laparoscopic donor nephrectomy; and laparoscopic as well as open bariatric surgery.  Dr. Posselt's current research interests include: 1) transplantation of pancreatic islets for the treatment of type 1 diabetes mellitus; 2) assessment of long-term renal function in kidney donors after donor nephrectomy; 3) immunologic and tolerogenic properties of embryonic stem cells; and 4) bariatric surgery in patients awaiting transplant. 

 
Most recent publications from a total of 74
  1. Hering BJ, Clarke WR, Bridges ND, Eggerman TL, Alejandro R, Bellin MD, Chaloner K, Czarniecki CW, Goldstein JS, Hunsicker LG, Kaufman DB, Korsgren O, Larsen CP, Luo X, Markmann JF, Naji A, Oberholzer J, Posselt AM, Rickels MR, Ricordi C, Robien MA, Senior PA, Shapiro AM, Stock PG, Turgeon NA. Phase 3 Trial of Transplantation of Human Islets in Type 1 Diabetes Complicated by Severe Hypoglycemia. Diabetes Care. 2016 Jul; 39(7):1230-40. View in PubMed
  2. Song S, Faleo G, Yeung R, Kant R, Posselt AM, Desai TA, Tang Q, Roy S. Silicon nanopore membrane (SNM) for islet encapsulation and immunoisolation under convective transport. Sci Rep. 2016; 6:23679. View in PubMed
  3. McEnhill ME, Brennan JL, Winnicki E, Lee MM, Tavakol M, Posselt AM, Stock PG, Portale AA. Effect of Immigration Status on Outcomes in Pediatric Kidney Transplant Recipients. Am J Transplant. 2016 Jun; 16(6):1827-33. View in PubMed
  4. Wang LJ, Kin T, O'Gorman D, Shapiro AM, Naziruddin B, Takita M, Levy MF, Posselt AM, Szot GL, Savari O, Barbaro B, McGarrigle J, Yeh CC, Oberholzer J, Lei J, Chen T, Lian M, Markmann JF, Alvarez A, Linetsky E, Ricordi C, Balamurugan AN, Loganathan G, Wilhelm JJ, Hering BJ, Bottino R, Trucco M, Liu C, Min Z, Li Y, Naji A, Fernandez LA, Ziemelis M, Danobeitia JS, Millis JM, Witkowski P. A Multicenter Study: North American Islet Donor Score in Donor Pancreas Selection for Human Islet Isolation for Transplantation. Cell Transplant. 2016; 25(8):1515-23. View in PubMed
  5. Usatin DJ, Perito ER, Posselt AM, Rosenthal P. Under Utilization of Pancreas Transplants in Cystic Fibrosis Recipients in the United Network Organ Sharing (UNOS) Data 1987-2014. Am J Transplant. 2016 May; 16(5):1620-5. View in PubMed
  6. Moassesfar S, Masharani U, Frassetto LA, Szot GL, Tavakol M, Stock PG, Posselt AM. A Comparative Analysis of the Safety, Efficacy, and Cost of Islet Versus Pancreas Transplantation in Nonuremic Patients With Type 1 Diabetes. Am J Transplant. 2016 Feb; 16(2):518-26. View in PubMed
  7. Schafer AL, Weaver CM, Black DM, Wheeler AL, Chang H, Szefc GV, Stewart L, Rogers SJ, Carter JT, Posselt AM, Shoback DM, Sellmeyer DE. Intestinal Calcium Absorption Decreases Dramatically After Gastric Bypass Surgery Despite Optimization of Vitamin D Status. J Bone Miner Res. 2015 Aug; 30(8):1377-85. View in PubMed
  8. Tai DS, Shen N, Szot GL, Posselt A, Feduska NJ, Habashy A, Clerkin B, Core E, Busuttil RW, Hines OJ, Reber HA, Lipshutz GS. Autologous islet transplantation with remote islet isolation after pancreas resection for chronic pancreatitis. JAMA Surg. 2015 Feb; 150(2):118-24. View in PubMed
  9. Schafer AL, Li X, Schwartz AV, Tufts LS, Wheeler AL, Grunfeld C, Stewart L, Rogers SJ, Carter JT, Posselt AM, Black DM, Shoback DM. Changes in vertebral bone marrow fat and bone mass after gastric bypass surgery: A pilot study. Bone. 2015 May; 74:140-5. View in PubMed
  10. Ahearn AJ, Parekh JR, Posselt AM. Islet transplantation for Type 1 diabetes: where are we now? Expert Rev Clin Immunol. 2015 Jan; 11(1):59-68. View in PubMed
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  • Mike Schofield

    Two-Time Transplant Recipient Meets Donor's Family

    Michael Schofield
    After Michael Schofield had his first islet cell transplant in April 2012, he wrote a letter thanking the family of his donor. It was over a year before he heard back from the donor’s mother. That's when he learned they had more in common than the young man whose cells Michael was carrying. He was en route to meet the mother last June, when he got another exciting piece of news: UCSF had a donor for the second islet transplant that he needed. In the space of a week he connected with one donor's family and started a new connection with another.[...]
    Story Categories: Islet Cell TransplantType 1 Diabetes
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    Surgery Ends Decades of Obesity, New Life Begins

    Sandy Raffi-Rashed after losing 185 pounds
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    Story Categories: Laparoscopic Gastric BypassNon-alcoholic Fatty Liver DiseaseObesityPost-Bariatric Body Contouring

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