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Histocompatibility Committee

The Histocompatibility Committee applies evolving science and technology in transplant immunology to develop, implement, and inform OPTN bylaws, policies, and clinical guidance for organ donation and transplantation. The Committee provides subject matter expertise to the OPTN for issues related to testing, matching, allocation, personnel qualifications, and other issues in transplant histocompatibility and immunology. The Committee’s goals are to promote patient safety, to strive to continuously improve clinical outcomes, and maximize the use of donated organs.


Practices for laboratories supporting clinical transplantation

Interpretation of HLA Typing Results for UNet Entry

  • Dr. Peter N Lalli
  • Immunology Laboratory at Carolinas Medical Center
Vice Chair
  • Dr. John G Lunz
  • LifeLink Transplantation Immunology Laboratory
Members Organization Position End Term Date
Dr. James S Bowman Division of Transplantation, HHS Ex Officio (non voting) 6/30/2021  
Dr. Valia Bravo-Egana Histocompatibility Immunology Laboratory at the Medical College of Georgia Regional Rep. 6/30/2023  
Ms. Amber R Carriker Mid-America Transplant Services Laboratory Regional Rep. 6/30/2024  
Mrs. Yvette M Chapman Southwest Transplant Alliance At Large 6/30/2023  
Dr. Idoia Gimferrer Bloodworks Northwest Immunogenetics Laboratory Regional Rep. 6/30/2022  
Dr. William C Goggins Indiana University Health Regional Rep. 6/30/2023  
Dr. Reut H Hod Dvorai SUNY Health Science Center at Syracuse Histocompatibility Laboratory Regional Rep. 6/30/2023  
Dr. Taba Kheradmand General Public Region 8 Regional Rep. 6/30/2022  
Dr. Evan P Kransdorf Cedars-Sinai Medical Center At Large 6/30/2022  
Dr. Marilyn E Levi Division of Transplantation, HHS Ex Officio (non voting) 6/30/2021  
Ms. Tracy McRacken HLA Immunology Laboratory at Sentara Norfolk General Hospital Regional Rep. 6/30/2021  
Dr. Gerald P Morris Histocompatibility and Immunogenetics Laboratory at UCSD Regional Rep. 6/30/2022  
Dr. Marcelo J Pando Rigal Histocompatibility Laboratory at Scott and White Memorial Hospital Regional Rep. 6/30/2023  
Dr. Vikram Pattanayak Histocompatibility Laboratory at Massachusetts General Hospital Regional Rep. 6/30/2022  
Dr. Jennifer Schiller Versiti, Blood Center of Wisconsin Regional Rep. 6/30/2022  
Mr. Karl P Schillinger Applied Immunogenetics Laboratory Regional Rep. 6/30/2022  
Dr. Manu R Varma General Public Region 1 At Large 6/30/2023  
Ms. Phyllis Weech Inova Fairfax Hospital At Large 6/30/2023  

Meeting Summaries

Reports to the Board of Directors

Looking for something else? Contact us at or (804) 782-4800. We maintain an archive of historical OPTN documents.