ARTÍCULO

A new potential oncogenic mutation in the FERM domain of JAK2 in BCR-ABL1 negative and V617F negative chronic myeloproliferative neoplasms (CMPNs) revealed by a comprehensive screening of 17 tyrosine kinase coding genes

Autores: Aranaz Oroz, Paula; Ormazábal Goicoechea, Cristina; Hurtado Rudi, Cristina; Erquiaga Martínez, Ignacio; Calasanz Abinzano, María José; García Delgado, Marina; Novo Villaverde, Francisco Javier; Vizmanos Pérez, José Luis
Título de la revista: CANCER GENETICS AND CYTOGENETICS
ISSN: 0165-4608
Volumen: 199
Número: 1
Páginas: 1 - 8
Fecha de publicación: 2010
Resumen:
BCR/ABL1-negative chronic myeloproliferative neoplasms (CMPNs) are a heterogeneous group of clonal hematological malignancies. Over recent years, some genetic events in tyrosine lcinase (TK) genes have been described as causal events of these diseases. To identify new genetic aberrations underlying these diseases, we used denaturing high performance liquid chromatography and fluorescence in situ hybridization (FISH) to analyze 17 genes from two receptor-TK families (III and IV) and from three cytoplasmic-TK families (Syk, Abl, and Jak) on samples from 44 BCR/ABL1-negative and JAK2(V617F)-negative CMPN patients with different clinical phenotypes. Although screening by FISH did not reveal novel chromosomal aberrations, several sequence changes were detected. None of them were frequent events, but we identified a new potential activating mutation in the FERM domain of JAK2(R340Q). None of the germline JAK2(V617F) singlenucleotide polymorphisms detected differed in distribution between patients and control subjects. In summary, data presented here show that these genes are not frequently mutated or rearranged in CMPNs, suggesting that molecular events causing these disorders must be located in other genes.