Very high resolution single pass HLA genotyping using amplicon sequencing on the 454 next generation DNA sequencers: Comparison with Sanger sequencing

F Yamamoto; B Höglund; M Fernandez-Vina; D Tyan; M Rastrou; T Williams; P Moonsamy; D Goodridge; M Anderson; H A Erlich; C L Holcomb

doi:10.1016/j.humimm.2015.05.002

Very high resolution single pass HLA genotyping using amplicon sequencing on the 454 next generation DNA sequencers: Comparison with Sanger sequencing

Hum Immunol. 2015 Dec;76(12):910-6. doi: 10.1016/j.humimm.2015.05.002. Epub 2015 May 30.

Authors

F Yamamoto¹, B Höglund², M Fernandez-Vina³, D Tyan⁴, M Rastrou⁵, T Williams⁶, P Moonsamy⁷, D Goodridge⁸, M Anderson⁹, H A Erlich¹⁰, C L Holcomb¹¹

Affiliations

¹ Stanford University, Palo Alto, CA, USA. Electronic address: [email protected].
² Roche Molecular Systems (RMS), Pleasanton, CA, USA. Electronic address: [email protected].
³ Stanford University, Palo Alto, CA, USA. Electronic address: [email protected].
⁴ Stanford University, Palo Alto, CA, USA. Electronic address: [email protected].
⁵ Roche Molecular Systems (RMS), Pleasanton, CA, USA. Electronic address: [email protected].
⁶ Roche Molecular Systems (RMS), Pleasanton, CA, USA.
⁷ Roche Molecular Systems (RMS), Pleasanton, CA, USA. Electronic address: [email protected].
⁸ Conexio Genomics, Perth, Australia. Electronic address: [email protected].
⁹ Stanford University, Palo Alto, CA, USA. Electronic address: [email protected].
¹⁰ Roche Molecular Systems (RMS), Pleasanton, CA, USA. Electronic address: [email protected].
¹¹ Roche Molecular Systems (RMS), Pleasanton, CA, USA. Electronic address: [email protected].

PMID: 26037172
DOI: 10.1016/j.humimm.2015.05.002

Abstract

Compared to Sanger sequencing, next-generation sequencing offers advantages for high resolution HLA genotyping including increased throughput, lower cost, and reduced genotype ambiguity. Here we describe an enhancement of the Roche 454 GS GType HLA genotyping assay to provide very high resolution (VHR) typing, by the addition of 8 primer pairs to the original 14, to genotype 11 HLA loci. These additional amplicons help resolve common and well-documented alleles and exclude commonly found null alleles in genotype ambiguity strings. Simplification of workflow to reduce the initial preparation effort using early pooling of amplicons or the Fluidigm Access Array™ is also described. Performance of the VHR assay was evaluated on 28 well characterized cell lines using Conexio Assign MPS software which uses genomic, rather than cDNA, reference sequence. Concordance was 98.4%; 1.6% had no genotype assignment. Of concordant calls, 53% were unambiguous. To further assess the assay, 59 clinical samples were genotyped and results compared to unambiguous allele assignments obtained by prior sequence-based typing supplemented with SSO and/or SSP. Concordance was 98.7% with 58.2% as unambiguous calls; 1.3% could not be assigned. Our results show that the amplicon-based VHR assay is robust and can replace current Sanger methodology. Together with software enhancements, it has the potential to provide even higher resolution HLA typing.

Keywords: 454 GS FLX; DNA sequencing; HLA genotyping; NGS.

MeSH terms

Alleles
Cell Line
Computational Biology / methods
HLA Antigens / genetics*
High-Throughput Nucleotide Sequencing / methods*
High-Throughput Nucleotide Sequencing / standards
Histocompatibility Testing*
Humans
Polymerase Chain Reaction
Reproducibility of Results
Sequence Analysis, DNA / methods
Sequence Analysis, DNA / standards
Software
Workflow

Substances

HLA Antigens