Abstract
Introduction
Next-generation sequencing (NGS) panels have recently been introduced to efficiently detect genetic variations in hematologic malignancies.
Objectives
Our aim was to evaluate the performance of the commercialized Oncomine™ myeloid research assay (OMA) for myeloid neoplasms.
Methods
Certified reference materials and clinical research samples were used, including 60 genomic DNA and 56 RNA samples. NGS was performed using OMA, which enables the interrogation of 40 target genes, 29 gene fusions, and five expression target genes with five expression control genes by the Ion S5 XL Sequencer. The analyzed data were compared with clinical data using karyotyping, reverse transcription polymerase chain reaction (PCR), fluorescence in situ hybridization, Sanger sequencing, customized NGS panel, and fragment analysis.
Results
All targets of reference materials were detected except three (two ASXL1 and one CEBPA) mutations, which we had not expected OMA to detect. In clinical search samples, OMA satisfactorily identified DNA variants, including 90 single nucleotide variants (SNVs), 48 small insertions and deletions (indels), and eight FLT3 internal tandem duplications (ITDs) (Kappa agreement 0.938). The variant allele frequencies of SNVs and indels measured by OMA correlated well with clinical data, whereas those of FLT3-ITDs were significantly lower than with fragment analysis (P = 0.008). Together, OMA showed strong ability to identify RNA gene fusions (Kappa agreement 0.961), except one RUNX1-MECOM. The MECOM gene was highly expressed in all five samples with MECOM-associated rearrangements, including inv(3), t(3;3), and t(3;21).
Conclusion
OMA revealed excellent analytical and potential clinical performance and could be a good replacement for conventional molecular tests.
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Acknowledgements
Thermo Fisher Scientific (Waltham, MA, USA) provided technical support for Ion Torrent sequencing in this study but was not involved in data collection or manuscript preparation.
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This research was supported by a Grant (18172MFDS182) from the Korean Ministry of Food and Drug Safety in 2020.
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HZ, NAK, JC, and J-WJ are employed at Thermo Fisher, which provided only technical support for this research. JP, HSK, J-ML, JJ, DK, HC, GDL, JS, SP, B-SC, H-JK, SK, JWL, N-GC, BC, YK, and MK have no conflicts of interest that are directly relevant to the content of this article.
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Park, J., Kim, H.S., Lee, JM. et al. Analytical and Potential Clinical Performance of Oncomine Myeloid Research Assay for Myeloid Neoplasms. Mol Diagn Ther 24, 579–592 (2020). https://doi.org/10.1007/s40291-020-00484-5
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DOI: https://doi.org/10.1007/s40291-020-00484-5