Abstract:
:Reliable detection of JAK2-V617F is critical for accurate diagnosis of myeloproliferative neoplasms (MPNs); in addition, sensitive mutation-specific assays can be applied to monitor disease response. However, there has been no consistent approach to JAK2-V617F detection, with assays varying markedly in performance, affecting clinical utility. Therefore, we established a network of 12 laboratories from seven countries to systematically evaluate nine different DNA-based quantitative PCR (qPCR) assays, including those in widespread clinical use. Seven quality control rounds involving over 21,500 qPCR reactions were undertaken using centrally distributed cell line dilutions and plasmid controls. The two best-performing assays were tested on normal blood samples (n=100) to evaluate assay specificity, followed by analysis of serial samples from 28 patients transplanted for JAK2-V617F-positive disease. The most sensitive assay, which performed consistently across a range of qPCR platforms, predicted outcome following transplant, with the mutant allele detected a median of 22 weeks (range 6-85 weeks) before relapse. Four of seven patients achieved molecular remission following donor lymphocyte infusion, indicative of a graft vs MPN effect. This study has established a robust, reliable assay for sensitive JAK2-V617F detection, suitable for assessing response in clinical trials, predicting outcome and guiding management of patients undergoing allogeneic transplant.
journal_name
Leukemiajournal_title
Leukemiaauthors
Jovanovic JV,Ivey A,Vannucchi AM,Lippert E,Oppliger Leibundgut E,Cassinat B,Pallisgaard N,Maroc N,Hermouet S,Nickless G,Guglielmelli P,van der Reijden BA,Jansen JH,Alpermann T,Schnittger S,Bench A,Tobal K,Wilkins B,Cudoi
10.1038/leu.2013.219subject
Has Abstractpub_date
2013-10-01 00:00:00pages
2032-9issue
10eissn
0887-6924issn
1476-5551pii
leu2013219journal_volume
27pub_type
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