Clonal analysis reveal associations of JAK2V617F homozygosity with hematological features, age and gender in PV and ET

Godfrey, A.L., Chen, E., Pagano, F., Silber, Y., Campbell, P.J. and Green, A.R. 2013. Clonal analysis reveal associations of JAK2V617F homozygosity with hematological features, age and gender in PV and ET. Haematologica. 98, pp. 718-721. https://doi.org/10.3324/haematol.2012.079129

TitleClonal analysis reveal associations of JAK2V617F homozygosity with hematological features, age and gender in PV and ET
TypeJournal article
AuthorsGodfrey, A.L., Chen, E., Pagano, F., Silber, Y., Campbell, P.J. and Green, A.R.
Abstract

Subclones homozygous for JAK2V617F are more common and larger in patients with polycythemia vera compared to essential thrombocythemia, but their role in determining phenotype remains unclear. We genotyped 4564 erythroid colonies from 59 patients with polycythemia vera or essential thrombocythemia to investigate whether the proportion of JAK2V617F -homozygous precursors, compared to heterozygous precursors, is associated with clinical or demographic features. In polycythemia vera, a higher proportion of homozygous-mutant precursors was associated with more extreme blood counts at diagnosis, consistent with a causal role for homozygosity in polycythemia vera pathogenesis. Larger numbers of homozygous-mutant colonies were associated with older age, and with male gender in polycythemia vera but female gender in essential thrombocythemia. These results suggest that age promotes development or expansion of homozygous-mutant clones and that gender modulates the phenotypic consequences of JAK2V617F homozygosity, thus providing a potential explanation for the long-standing observations of a preponderance of men with polycythemia vera but of women with essential thrombocythemia

JournalHaematologica
Journal citation98, pp. 718-721
ISSN0390-6078
Year2013
PublisherFerrata Storti Foundation
Digital Object Identifier (DOI)https://doi.org/10.3324/haematol.2012.079129
Publication dates
PublishedMay 2013

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