Evidence map›Paper›PMID 41693601›Full record

ArticleJournal of clinical laboratory analysis2026

Genotype-Driven Resolution of Panagglutination Over a Decade of Korean Rare Blood Program Case Archives.

Hyunji Kim, Dong Woo Shin, Sujin Oh, Jiyoung Lee, Ho Eun Chang, Yun Ji Hong, Kyoung Un Park

Abstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Hyunji KimDepartment of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea.ORCID https://orcid.org/0000-0003-3548-0254
Dong Woo ShinDepartment of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea.
Sujin OhSeoul National University College of Medicine, Seoul, Republic of Korea.ORCID https://orcid.org/0000-0001-6144-2994
Jiyoung LeeSeoul National University College of Medicine, Seoul, Republic of Korea.
Ho Eun ChangSeoul National University College of Medicine, Seoul, Republic of Korea.
Yun Ji HongDepartment of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea.
Kyoung Un ParkDepartment of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea.ORCID https://orcid.org/0000-0002-2402-7633

Funding

National Institute of Organ, Tissue, and Blood Management
6 · The paper itself

Abstract

backgroundAs populations age and chronic disease burden rises, transfusion demand grows in both volume and immunohematologic complexity. When reagent red blood cells (RBCs) in antibody screening and identification panels show uniform reactivity with a negative autocontrol and direct antiglobulin test, an alloantibody to a high-frequency antigen (HFA) is suspected. These cases pose persistent diagnostic challenges and may necessitate least-incompatible transfusions, potentially compromising safety. We evaluated whether a structured molecular approach within a national rare-blood program improves diagnostic resolution and transfusion planning in such cases.

methodsWe retrospectively reviewed suspected HFA alloantibody cases referred to the Korean Rare Blood Program (KRBP) case registry between 2013 and 2024. All cases underwent a two-tier molecular workflow consisting of allele-specific real-time PCR for targeted variants, followed by confirmatory Sanger sequencing when indicated. Clinical data, serology, genotyping results, and impact on transfusion management were abstracted and analyzed.

resultsOf 1031 referrals, 28 met inclusion criteria. Molecular testing identified underlying rare antigen-negative phenotypes in most cases, including Jr(a-) in 13/28 (46.4%) and Yk(a-) in 11/28 (39.3%) cases. The tiered genotyping strategy enabled accurate genotype-phenotype correlation and directly informed the selection of antigen-compatible RBC units and donor search strategies.

conclusionSuspected HFA alloantibodies frequently reflect clinically significant antigen deficiencies that cannot be resolved by serologic testing alone. Integration of a centralized molecular workflow with a national registry substantially improves diagnostic accuracy and transfusion safety. Expansion of family-based donor identification and systematic rare-phenotype surveillance is recommended to enhance national transfusion preparedness.

Indexed as

HemagglutinationAdultBlood Group AntigensBlood Grouping and CrossmatchingBlood TransfusionFemaleGenotypeHumansIsoantibodiesMaleMiddle AgedRegistriesRepublic of KoreaRetrospective StudiesBlood Group AntigensIsoantibodiescase registrydonor‐derived registryKRBPmolecular genotypingpanagglutination

Identifiers

PMID41693601
PMCPMC13042433

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