Multi-loci diagnosis of acute lymphoblastic leukaemia with high-throughput sequencing and bioinformatics analysis

British Journal of Haematology
Yann FerretMathieu Giraud

Abstract

High-throughput sequencing (HTS) is considered a technical revolution that has improved our knowledge of lymphoid and autoimmune diseases, changing our approach to leukaemia both at diagnosis and during follow-up. As part of an immunoglobulin/T cell receptor-based minimal residual disease (MRD) assessment of acute lymphoblastic leukaemia patients, we assessed the performance and feasibility of the replacement of the first steps of the approach based on DNA isolation and Sanger sequencing, using a HTS protocol combined with bioinformatics analysis and visualization using the Vidjil software. We prospectively analysed the diagnostic and relapse samples of 34 paediatric patients, thus identifying 125 leukaemic clones with recombinations on multiple loci (TRG, TRD, IGH and IGK), including Dd2/Dd3 and Intron/KDE rearrangements. Sequencing failures were halved (14% vs. 34%, P = 0.0007), enabling more patients to be monitored. Furthermore, more markers per patient could be monitored, reducing the probability of false negative MRD results. The whole analysis, from sample receipt to clinical validation, was shorter than our current diagnostic protocol, with equal resources. V(D)J recombination was successfully assigned by the software, ...Continue Reading

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Citations

Jun 13, 2019·International Journal of Molecular Sciences·Ricardo SánchezJoaquín Martínez-López
Apr 30, 2017·Molecular Diagnosis & Therapy·Michaela KotrovaMonika Brüggemann
Jan 13, 2017·Briefings in Bioinformatics·James M HeatherBenny Chain
Jan 5, 2021·International Journal of Laboratory Hematology·Rodolfo P CorreiaPaulo V Campregher

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