Hematology · 4 h ago
Finnish biobank data identify 86 rare blood group donors
A study screened genome-wide data from 56,997 Finnish blood donors for variants associated with rare blood group phenotypes. Researchers identified 86 new rare donors, and genomic findings matched confirmation by routine methods.
- Genome-wide data from 56,997 donors were screened.
- Eighty-six new rare donors were identified.
- Genomic findings matched routine phenotype confirmation.
- Patient data highlighted needs for rare blood units.
Safe transfusion can be difficult for patients with rare red blood cell phenotypes, particularly when they have developed antibodies against other blood group antigens. In this Finnish study, researchers screened genome-wide data from 56,997 blood donors in the national Blood Service Biobank for variants linked to rare phenotypes, then confirmed identified donors using routine methods. They also used Helsinki University Hospital data to estimate demand for rare blood units.
The screening identified 86 new rare donors, with complete concordance between genomic results and confirmed phenotypes. Patient data highlighted demand for rare units and the importance of phenotypes that are more prevalent among people of African ancestry. The findings suggest that biobank genomic data can help expand rare donor registries and support transfusion preparedness. The report describes a Finnish donor population and does not provide details on implementation costs or whether the approach improved patient outcomes.
In practice
For transfusion services caring for patients with rare red blood cell phenotypes, this Finnish study suggests that genome-wide data already held in a donor biobank can help identify additional compatible donors. Screening 56,997 donors yielded 86 new rare donors, and genomic results agreed with routine phenotype confirmation. This supports the potential utility of genomic data for expanding donor registries, including for phenotypes identified as more prevalent among people of African ancestry. The study does not show that this approach improves clinical outcomes, and its applicability beyond Finland is uncertain.
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British Journal of Haematology: Identification of rare blood group donors from biobank data ↗This is an automated AI-condensed summary that has not yet been reviewed by an editor. Always consult the full item at the original source.