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2.
Transfus Apher Sci ; 63(5): 103973, 2024 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-39089169

RESUMO

BACKGROUND: RhD variants are categorized into partial D, weak D, and DEL. The detection of DEL can only be achieved through the adsorption and elution method or molecular techniques. Here, we report a case of DEL phenotypes associated with a novel allele in a Chinese individual. STUDY DESIGN AND METHODS: We used serological methods such as saline, indirect anti-human globulin, and adsorption-elution. The RHD genotype was determined by the PCR-sequence specific primer (PCR-SSP) method as well as the Sanger dideoxy sequencing. RESULTS: RBCs of the sample were found to be DEL phenotype by serological testing, with negative reactions in the saline and indirect anti-human globulin tests while positive reactions by the absorption-elution method. The genotyping results revealed a hemizygous (RHDc .1127 T>G/RHD-). The novel allele sequence has been submitted to GenBank (Accession number: OR608456). CONCLUSION: Our study demonstrates a case of a Chinese individual with DEL phenotype caused by a novel allele RHD c .1127 T > G. It expands the database of the DEL variant.

6.
HLA ; 104(2): e15633, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39091269

RESUMO

Two novel HLA-DQB1 alleles, HLA-DQB1*05:01:50 and HLA-DQB1*06:486, characterised in bone marrow volunteers.


Assuntos
Alelos , Éxons , Cadeias beta de HLA-DQ , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Cadeias beta de HLA-DQ/genética , Teste de Histocompatibilidade/métodos , Sequência de Bases , Análise de Sequência de DNA/métodos , Códon , Medula Óssea
14.
HLA ; 104(1): e15629, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-39073238

RESUMO

HLA-C*02 246 has one nucleotide change from HLA-C*02:02:02:01 at nucleotide 523 changing Arginine to Cysteine at residue 151.


Assuntos
Alelos , Sequência de Bases , Éxons , Antígenos HLA-C , Teste de Histocompatibilidade , Humanos , Antígenos HLA-C/genética , Análise de Sequência de DNA/métodos , Alinhamento de Sequência , Substituição de Aminoácidos , Códon
18.
HLA ; 104(1): e15600, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-39015081

RESUMO

One nucleotide substitution in codon 30 of HLA-DRB4*01:03:01:01 results in a novel allele, HLA-DRB4*01:179.


Assuntos
Alelos , Éxons , Cadeias HLA-DRB4 , Teste de Histocompatibilidade , Humanos , Sequência de Bases , Códon , Cadeias HLA-DRB4/genética , Alinhamento de Sequência , Análise de Sequência de DNA
19.
Asian J Transfus Sci ; 18(1): 1-6, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39036683

RESUMO

BACKGROUND AND OBJECTIVES: Discrepancy between forward and reverse ABO grouping could be due to several reasons including genetic mutations of the alleles encoding group specific transferase. The healthy donors found with weak A antigen were investigated to ascertain the allele responsible for variation. MATERIALS AND METHODS: Standard serological methods were employed using commercial antisera. The molecular sequencing was performed on DNA with enrichment library prep kit and a custom designed overlapping probe panel. Binary alignment mapping files, generated on board the Illumina MiSeq instrument and aligned to the GRCh37/Hg19 reference genome, were uploaded to the QIAGEN CLC genomics workbench software (version. 20) where variant call files were generated and analyzed. RESULTS: Red blood cells (RBCs) of six healthy donors, showing weak mix-field agglutination by anti-A and anti-A, B and plasma with absence or weakly reacting anti-A, were investigated serologically. The RBCs incubated with anti-A yield positive elution and their saliva lacked A but possessed H antigen thereby classifying as a historical known phenotype Aend. Family study on 4 probands showed inheritance of the trait. Molecular studies revealed presence of ABO*A allele carrying rare novel variant referred to as c.106delinsGG in line with HGVS recommendation that was thought to be responsible for the variant of A. CONCLUSION: Six cases serologically defined as Aweak were found to be associated with novel allele ABO*A (c.106delinsGG). The Aweak phenotype with the novel allele has not been displayed on International Society of Blood Transfusion database, though c.106delinsGG is listed in the UCSC genome browser under rs782544248.

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