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Review
. 2019 Apr;80(4):228-236.
doi: 10.1016/j.humimm.2019.01.009. Epub 2019 Feb 6.

Quality control project of NGS HLA genotyping for the 17th International HLA and Immunogenetics Workshop

Kazutoyo Osoegawa  1 Tamara A Vayntrub  2 Sabine Wenda  3 Dianne De Santis  4 Konstantinos Barsakis  5 Milena Ivanova  6 Susan Hsu  7 Jonathan Barone  7 Rhonda Holdsworth  8 Mary Diviney  8 Medhat Askar  9 Amanda Willis  9 Dawn Railton  10 Sophie Laflin  10 Ketevan Gendzekhadze  11 Arisa Oki  11 Nicoletta Sacchi  12 Michela Mazzocco  12 Marco Andreani  13 Reem Ameen  14 Catherine Stavropoulos-Giokas  15 Amalia Dinou  15 Margareth Torres  16 Rodrigo Dos Santos Francisco  16 Carles Serra-Pages  17 Damian Goodridge  18 Sandra Balladares  18 Maria P Bettinotti  19 Brian Iglehart  19 Zahra Kashi  20 Russell Martin  20 Chee Loong Saw  21 Jiannis Ragoussis  22 Jonathan Downing  23 Cristina Navarrete  24 Winnie Chong  24 Katsuyuki Saito  25 Martin Petrek  26 Stana Tokic  26 Karin Padros  27 Ma Beatriz Rodriguez  27 Viktoria Zakharova  28 Olga Shragina  28 Susana R Marino  29 Nicholas K Brown  29 Takashi Shiina  30 Shingo Suzuki  30 Eric Spierings  31 Qiuheng Zhang  32 Yuxin Yin  32 Gerald P Morris  33 Ana Hernandez  34 Phillip Ruiz  34 Seik-Soon Khor  35 Katsushi Tokunaga  35 Aviva Geretz  36 Rasmi Thomas  36 Fumiko Yamamoto  2 Kalyan C Mallempati  2 Sridevi Gangavarapu  2 Uma Kanga  37 Shweta Tyagi  37 Steven G E Marsh  38 Will P Bultitude  38 Xiangjun Liu  39 Dajiang Cao  39 Maarten Penning  40 Carolyn K Hurley  41 Anne Cesbron  42 Claudia Mueller  43 Joannis Mytilineos  44 Eric T Weimer  45 Mats Bengtsson  46 Gottfried Fischer  3 John A Hansen  47 Chia-Jung Chang  48 Steven J Mack  49 Lisa E Creary  50 Marcelo A Fernandez-Viña  50
Affiliations
Review

Quality control project of NGS HLA genotyping for the 17th International HLA and Immunogenetics Workshop

Kazutoyo Osoegawa et al. Hum Immunol. 2019 Apr.

Abstract

The 17th International HLA and Immunogenetics Workshop (IHIW) organizers conducted a Pilot Study (PS) in which 13 laboratories (15 groups) participated to assess the performance of the various sequencing library preparation protocols, NGS platforms and software in use prior to the workshop. The organizers sent 50 cell lines to each of the 15 groups, scored the 15 independently generated sets of NGS HLA genotyping data, and generated "consensus" HLA genotypes for each of the 50 cell lines. Proficiency Testing (PT) was subsequently organized using four sets of 24 cell lines, selected from 48 of 50 PS cell lines, to validate the quality of NGS HLA typing data from the 34 participating IHIW laboratories. Completion of the PT program with a minimum score of 95% concordance at the HLA-A, HLA-B, HLA-C, HLA-DRB1 and HLA-DQB1 loci satisfied the requirements to submit NGS HLA typing data for the 17th IHIW projects. Together, these PS and PT efforts constituted the 17th IHIW Quality Control project. Overall PT concordance rates for HLA-A, HLA-B, HLA-C, HLA-DPA1, HLA-DPB1, HLA-DQA1, HLA-DQB1, HLA-DRB1, HLA-DRB3, HLA-DRB4 and HLA-DRB5 were 98.1%, 97.0% and 98.1%, 99.0%, 98.6%, 98.8%, 97.6%, 96.0%, 99.1%, 90.0% and 91.7%, respectively. Across all loci, the majority of the discordance was due to allele dropout. The high cost of NGS HLA genotyping per experiment likely prevented the retyping of initially failed HLA loci. Despite the high HLA genotype concordance rates of the software, there remains room for improvement in the assembly of more accurate consensus DNA sequences by NGS HLA genotyping software.

Keywords: NGS HLA typing; Proficiency testing; Quality control; Reference cell panel.

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