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The Working Party has met twice since the last report: in Seoul, South Korea 2014, and in London, UK 2015, both in association with the International Society of Blood Transfusion ( ISBT) Congress. As in previous meetings, matters pertaining to blood group antigen nomenclature were discussed. Eleven new blood group antigens were added to seven blood group systems. This brings the current total of blood group antigens recognized by the ISBT to 346, of which 308 are clustered within 36 blood groups systems. The remaining 38 antigens are currently unassigned to a known blood group system. [ABSTRACT FROM AUTHOR]

The International Society of Blood Transfusion Working Party on red cell immunogenetics and blood group terminology convened during the International congress in Cancun, July 2012. This report details the newly identified antigens in existing blood group systems and presents three new blood group systems. [ABSTRACT FROM AUTHOR]

The article offers information on the meeting of the Working Party of the International Society of Blood Transfusion (ISBT) during the 2010 ISBT Congress in Berlin, Germany. It states that the group was renamed the Working Party on Red Cell Immunogenetics and Blood Group Terminology during the event. It also says that doctor Geoff Daniels gave terms of reference to advise the ISBT on red cell immunogenetics, and to maintain and monitor terminologies for blood group antigens.

Rare blood types are generally defined as those that occur at a frequency of 1 : 1000 or less. However, some rare blood types have much different frequencies in global regions or specific ethnic groups. This review explores rare blood types in the following categories: rare blood types that lack high-frequency antigens and where to find them, rare blood types that express low-frequency antigens, rare blood types with higher or lower frequencies in the Asia Pacific region and rare blood types that are difficult to find in the Asia Pacific region but are provided by the JRC. In addition, the study of rare blood types has revealed clinical correlations with disease states and resistance to infections. [ABSTRACT FROM AUTHOR]

The article presents the changes and updates made by the International Society of Blood Transfusion committee to the classification in Blood Terminology 2004 during its meeting in Macau Special Administrative Region, China. It states that a new blood group system was established and new antigens were added to Rh, Kell, and Dombrock systems. It also mentions that there are already a total number of 308 antigens recognized at present times.

Presents a chart that depicts the blood group terminology. System name; System symbol; Gene name; Chromosomal location.

Rare blood is generally defined as one that occurs at a frequency of 1:100~1000 individuals or less, and it is sometimes difficult to provide such blood types to patients because of their rarities. The Japanese Red Cross ( JRC) Society lists 46 rare blood phenotypes that are divided into two categories. The rare blood types listed in Category I occur much less frequently than those listed in Category II. We screen for rare blood cells using monoclonal antibodies (MoAbs). Since 1987, our blood centre has established 93 MoAbs (32 human and 61 murine) and has provided them to the other blood centres. Many of IgG MoAbs are available on the machine by saline or bromelin method by cross-linking with anti-human or anti-mouse IgG. Thus, more than 10 000 donors with rare blood phenotypes (Category I, 748; Category II, 9314) are registered in Japan. We freeze rare blood, particularly Category I types. Since 1977, a total of 576 units of rare blood with phenotypes Di(b−), D−−, Jr(a−), Ko and Lan-, etc. have been supplied to 23 international countries. Thus, the JRC contributes to the International Panel of Donors of Rare Blood Type ( IDP) which is maintained by the International Blood Group Reference Laboratory ( IBGRL) in Bristol, UK. The IDP provides information on the location of rare blood donors when they cannot be found in their respective countries. We also joined the ISBT Working Party on Rare Donors which handles all matters related to rare blood. Our rare blood donor programme is successful because of international co-operation. [ABSTRACT FROM AUTHOR]