Preferred Label : Blood group, junior system;
Symbol : JR;
CISMeF acronym : JR;
Type : Phenotype, molecular basis known;
Description : Individuals with Jr(a-) blood group lack the Jr(a) antigen on their red blood cells.
These individuals may have anti-Jr(a) antibodies in their serum, which can cause transfusion
reactions or hemolytic disease of the fetus or newborn. Although the clinical significance
of the Jr(a-) blood group has been controversial, severe fatal hemolytic disease of
the newborn has been reported. The Jr(a-) phenotype has a higher frequency in individuals
of Asian descent, compared to those of European descent (summary by Kim et al., 2010
and Zelinski et al., 2012).;
Prefixed ID : #614490;
Origin ID : 614490;
UMLS CUI : C3280986;
False automatic mappings
- Genes related to phenotype
- Semantic type(s)
