AM25-TU-01-L - How New Red Cell Antigens Are Identified, Classified, Added to a Blood Group System. or Creating a New Blood Group System, Theory, and Practice

Tuesday, October 28, 2025

8:15 AM - 9:15 AM PT

Location: 20D

Speaker(s)

Jasem M. Albasri, MSTM, (he/him/his)

Blood Bank Supervisor
Prince Sultan Military Medical City
Riyadh, Ar Riyad

Disclosure(s): No financial relationships to disclose

Program Chair(s)

Sue Johnson, MSTM, MLS(ASCP)SBB

Director, Clinical Education
Versiti Blood Center of Wisconsin
Milwaukee, Wisconsin

Disclosure(s): No relevant disclosure to display

Speaker(s)

Thierry Peyrard, PharmD, PhD, EurSpLM

Responsible Person of the French Blood Establishment (EFS)/Director of the Medical Affairs and Research Department
Etablissement Français du Sang, La Plaine Saint-Denis, France
La Plaine Saint-Denis, Ile-de-France

Disclosure(s): No financial relationships to disclose

Proposed Session Description: This sessions takes the audience into the journey on how systematically suspect and identify novel Red cell antigens, what s
the role of ISBT in facilitating, approving, and encouraging research on identifying novel antigens. In addition, the session will discuss the types of novel discoveries in blood group systems( new antigen, new mutation that lead to a specific phenotype, Novel mechanism that give us understanding how blood group antigens are inherited and expressed.)

Learning Objectives:

Describe the first steps in suspecting and identifying new red blood cell antigens
Discuss how to prove a suspected new antigens is really a novel one.
Discuss role of ISBT working parties in setting guidance in maintaining uniform identification method for new antigens.