Evidence map›Paper›PMID 32218484›Full record

ArticleScientific reports2020

HLA-A, -B, -C, -DRB1, -DQA1, and -DQB1 allele and haplotype frequencies defined by next generation sequencing in a population of East Croatia blood donors.

Stana Tokić, Veronika Žižkova, Mario Štefanić, Ljubica Glavaš-Obrovac, Saška Marczi, Marina Samardžija, Katerina Sikorova, Martin Petrek

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.6field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 19 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Stana TokićDepartment of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Osijek, J. Huttlera 4, HR-31000, Osijek, Croatia. stokic@mefos.hr.
Veronika ŽižkovaDepartment of Pathological Physiology, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, 775 15, Olomouc, Czech Republic.
Mario ŠtefanićDepartment of Nuclear Medicine and Oncology, Faculty of Medicine, University of Osijek, J. Huttlera 4, HR-31000, Osijek, Croatia. mstefanic@mefos.hr.
Ljubica Glavaš-ObrovacDepartment of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Osijek, J. Huttlera 4, HR-31000, Osijek, Croatia.
Saška MarcziDepartment of Laboratory Diagnostics and Clinical Transfusion Medicine, Clinical Institute of Transfusion Medicine, Osijek University Hospital, J. Huttlera 4, HR-31000, Osijek, Croatia.
Marina SamardžijaDepartment of Laboratory Diagnostics and Clinical Transfusion Medicine, Clinical Institute of Transfusion Medicine, Osijek University Hospital, J. Huttlera 4, HR-31000, Osijek, Croatia.
Katerina SikorovaDepartment of Pathological Physiology, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, 775 15, Olomouc, Czech Republic.
Martin PetrekDepartment of Pathological Physiology, Faculty of Medicine and Dentistry, Palacký University, Hnevotinska 3, 775 15, Olomouc, Czech Republic. Martin.Petrek@fnol.cz.
Palacký University Olomouc · CZUniversity of Osijek · HRCroatian Institute of Transfusion Medicine · HR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Next-generation sequencing (NGS) is increasingly used in transplantation settings, but also as a method of choice for in-depth analysis of population-specific HLA genetic architecture and its linkage to various diseases. With respect to complex ethnic admixture characteristic for East Croatian population, we aimed to investigate class-I (HLA-A, -B, -C) and class-II (HLA-DRB1, -DQA1, -DQB1) HLA diversity at the highest, 4-field resolution level in 120 healthy, unrelated, blood donor volunteers. Genomic DNA was extracted and HLA genotypes of class I and DQA1 genes were defined in full-length, -DQB1 from intron 1 to 3' UTR, and -DRB1 from intron 1 to intron 4 (Illumina MiSeq platform, Omixon Twin algorithms, IMGT/HLA release 3.30.0_5). Linkage disequilibrium statistics, Hardy-Weinberg departures, and haplotype frequencies were inferred by exact tests and iterative Expectation-Maximization algorithm using PyPop 0.7.0 and Arlequin v3.5.2.2 software. Our data provide first description of 4-field allele and haplotype frequencies in Croatian population, revealing 192 class-I and class-II alleles and extended haplotypic combinations not apparent from the existing 2-field HLA reports from Croatia. This established reference database complements current knowledge of HLA diversity and should prove useful in future population studies, transplantation settings, and disease-associated HLA screening.

Indexed as

AdultBlood DonorsCroatiaFemaleGene FrequencyHaplotypesHealthy VolunteersHigh-Throughput Nucleotide SequencingHLA-A AntigensHLA-B AntigensHLA-C AntigensHLA-DQ alpha-ChainsHLA-DQ beta-ChainsHLA-DRB1 ChainsHumansLinkage DisequilibriumHLA-A AntigensHLA-B AntigensHLA-C AntigensHLA-DQA1 antigenHLA-DQ alpha-ChainsHLA-DQB1 antigenHLA-DQ beta-ChainsHLA-DRB1 Chains

Identifiers

PMID32218484
PMCPMC7099076
OpenAlexW3013663356

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.