Korean J Blood Transfus.  2016 Aug;27(2):169-173. 10.17945/kjbt.2016.27.2.169.

A Case of Primary Anti-D Alloimmunization by RHD (c.1227G>A) DEL Red Blood Cell Transfusion

Affiliations
  • 1Department of Laboratory Medicine, Korea University Guro Hospital, Seoul, Korea. malarim@korea.ac.kr
  • 2Blood Transfusion Research Institute, Korea Red Cross, Wonju, Korea.

Abstract

The Rh blood group D antigen is the most immunogenic of all antigens, next to ABO antigens. Anti-D immunization is clinically important since it may cause clinical problems, such as severe hemolytic transfusion reactions and hemolytic disease of the newborn. DEL is an extremely weak D variant that cannot be detected by basic serologic typing and is typed as D-negative without the absorption-elution techniques and RHD genotyping. Of the DEL phenotype, RHD (c.1227G>A) allelic variant is the most common in Korea. The DEL phenotype has been considered to carry only a few D antigens to induce anti-D immunization, but a few cases have reported that this allelic variant is capable of inducing anti-D immunization in a D-negative recipient, for which it is clinical significant. Herein, we present a case of primary anti-D alloimmunization in a RhD negative patient after receiving RHD (c.1227G>A) DEL red cell transfusion identified by serological and molecular tests, including RHD genotyping.

Keyword

RHD genotyping; DEL; Anti-D antibody; Transfusion

MeSH Terms

Erythrocyte Transfusion*
Erythrocytes*
Humans
Immunization
Infant, Newborn
Korea
Phenotype
Transfusion Reaction
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