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John P. Roberts, MD


John P. Roberts, M.D.

Professor & Chief,
Division of Transplant Surgery

 

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Transplant Surgery »  Faculty »  Andrew M. Posselt, M.D., Ph.D.

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

Assistant Professor of Surgery

Contact Information

(415) 353-1888 Clinical, Liver

(415) 353-1551 Clinical, Kidney and Pancreas

(415) 353-1473 Academic

posselta@surgery.ucsf.edu

Education

  • Stanford University, B.S., Biology, 1981-85
  • University of Pennsylvania, M.D., Medicine, 1985-93
  • University of Pennsylvania, Ph.D., Immunology, 1989-93

Residencies

  • University of California, San Francisco, Resident, Medicine, 1993-96
  • University of California, San Francisco, Resident, Surgery, 1996-00

Fellowships

  • University of California, San Francisco, Fellow, Transplant Surgery, 2000-02

Postdoctoral Training

Board Certification

  • American Board of Internal Medicine, 1996
  • American Board of Surgery, 2002

Program Affiliations

Co-Director, Pancreatic Islet Transplantation Program, UCSF Medical Center

Co-Director, Bariatric Surgery Center, UCSF Medical Center

Director, ABO-Incompatible Kidney Transplant Program

Clinical Expertise

  • Adult Kidney, Liver, and Pancreas Transplantation
  • Pediatric Kidney, Liver, and Pancreas Transplantation
  • Living Donor Kidney Transplantation
  • Laparoscopic Donor Nephrectomy
  • Laparoscopic and Open Bariatric Surgery

Research Interests

  • Transplantation of pancreatic islets as treatment for type 1 diabetes mellitus.
  • Assessment of long-term clinical outcomes in kidney donors.
  • Metabolic and biochemical consequences of bariatric surgery.
  • Clinical outcomes of bariatric surgery in patients with end-stage kidney or liver disease.

Website LInks

Biography

Dr. Andrew Posselt is an attending multi-organ transplant surgeon and Assistant Professor of Surgery at the University of California, San Francisco.   He is the 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.

Selected Publications

  1. Posselt AM, Barker CF, Tomaszewski JE, Markmann JF, Choti MA, Naji A. Induction of donor-specific unresponsiveness by intrathymic islet transplantation. Science. 249:1293-5, Sep/14/1990.
  2. Posselt AM, Barker CF, Friedman AL, Naji A. Prevention of autoimmune diabetes in the BB rat by intrathymic islet transplantation at birth. Science. 256:1321-4, May/29/1992.
  3. Carter JT, Freise CE, McTaggart RA, Mahanty HD, Kang SM, Chan SH, Feng S, Roberts JP, Posselt AM. Laparoscopic procurement of kidneys with multiple renal arteries is associated with increased ureteral complications in the recipient. Am J Transplant. 5:1312-8, Jun/2005.
  4. Carter J, Tafreshian S, Campos G, Tiwari U, Herbella F, Cello J, Patti M, Rogers S, Posselt AM. A routine upper GI series after gastric bypass does not reliably identify anastomotic leaks or predict stricture formation. Surg Endosc., May/5/2007.
  5. Takata MC, Campos GM, Ciovica R, Rabl C, Rogers SJ, Cello JP, Ascher NL, Posselt AM. Laparoscopic bariatric surgery improves candidacy in morbidly obese patients awaiting transplantation. Surg Obes Relat Dis. 2008.