Characterisation of the Novel HLA-A*23:163 Allele by Next-Generation Sequencing.
HLA-A*23:163 differs from HLA-A*23:01:01:03 by a single nucleotide substitution at position 925 of the cDNA.
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HLA-A*23:163 differs from HLA-A*23:01:01:03 by a single nucleotide substitution at position 925 of the cDNA.
HLA-B*08:01:80 differs from HLA-B*08:01:01:01 by one nucleotide substitution in exon 2-437 G>A.
HLA-C*08:01:37 differs from HLA-C*08:01:01:01 by one single nucleotide substitution at position 927 G>A in exon 5.
Accurate and timely sequencing of poliovirus is critical for global eradication efforts, particularly for molecular epidemiology based on the typing region of the genome, viral protein 1 (VP1). While Oxford Nanopore Technologies (ONT) sequencing has expanded capabilities for poliovirus surveillance, the relative performance of different ONT library preparation methods, including ligation-based (Native Barcoding) and transposase-based (Rapid Barcoding) approaches, has not been systematically evaluated. In this study, we compared rapid barcoding and native barcoding workflows for sequencing VP1 amplicons from 17 type 2 poliovirus-positive samples, each processed in triplicate. Native barcoding generated significantly more sequencing output, producing approximately 2.3-fold greater total read yield than rapid barcoding, and demonstrated higher run-to-run reproducibility (R2 = 0.979-0.998 vs. 0.847-0.929, respectively; p < 0.001). In addition, native barcoding generated 80% of the total yield achieved by rapid barcoding within approximately 7 h, whereas rapid barcoding required approximately 40 h to reach the same output. Despite these differences, both methods produced identical VP1 consensus sequences across all samples, with comparable read quality (median per-base Q-scores of approximately Q17-Q18). Rapid barcoding provided substantial practical advantages, reducing hands-on library preparation time (55 vs. 200 min) and per-sample cost ($12.82 vs. $16.54), while simplifying workflow and reducing technical complexity. These findings indicate that sequencing yield may not be a determinant of downstream analytical outcomes for poliovirus VP1 ONT sequencing. Rapid barcoding therefore represents a cost-effective and efficient approach for routine poliovirus surveillance, whereas native barcoding remains advantageous in applications requiring rapid data generation or maximal sequencing depth.
Genomic sequences of the HLA-DQB1*03:01:01:70, -DQB1*03:01:01:77, -DQB1*03:02:01:28, -DQB1*03:02:01:29, and -DQB1*03:03:02:19 alleles.
The HLA-C*04:547 allele differs from HLA-C*04:04:01:01 by a single non-synonymous change in exon 7.
The HLA-C*12:72 allele, differs from HLA-C*12:02:02:01, by one nonsynonymous substitution, c.312C>A in exon 2.
HLA-A*23:23:02 differs from the most closely related allele A*23:23:01 by a single synonymous substitution in exon 3.
The HLA-C*15:02:01:66 allele differs from HLA-C*15:02:01:01 by a single-nucleotide substitution in Intron 6.
Compared with the HLA-B*55:04 allele, HLA-B*55:135 shows two nucleotide substitutions in exon 2 (codon 63 AAC>GAG).
HLA-A*02:540:02N differs from A*02:01:01:01 by one nucleotide substitution in codon 99 in exon 3.
HLA-C*07:1193 differs from HLA-C*07:02:01:03 in exon 5 codon 292 (GCT>GTT).
HLA-DQB1*06:03:60 differs from HLA-DQB1*06:03:01:01 by a single synonymous nucleotide substitution at position 174 in Exon 2.
HLA-DQB1*05:386 differs from HLA-DQB1*05:01:01:01 by a non-synonymous substitution in exon 4.
HLA-DQA1*03:63 differs from HLA-DQA1*03:02:01:01 by a single nucleotide substitution at position 722 G>A.
HLA-A*02:1229 differs from HLA-A*02:07:01:01 by a single nucleotide substitution at position 1014 T>A.
The HLA-DPA1*02:02:02:22 allele differs from HLA-DPA1*02:02:02:01 by a single nucleotide substitution in intron 1.
HLA-DQB1*02:02:41 differs from HLA-DQB1*02:02:01:01 by one synonymous nucleotide substitution at Codon 39 in Exon 2.