Variable presence of KITD816V in clonal haematological non-mast cell lineage diseases associated with systemic mastocytosis (SM-AHNMD).
Détails
ID Serval
serval:BIB_0450520495D2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Variable presence of KITD816V in clonal haematological non-mast cell lineage diseases associated with systemic mastocytosis (SM-AHNMD).
Périodique
The Journal of pathology
ISSN
1096-9896 (Electronic)
ISSN-L
0022-3417
Statut éditorial
Publié
Date de publication
04/2010
Peer-reviewed
Oui
Volume
220
Numéro
5
Pages
586-595
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Résumé
In a substantial number of patients with systemic mastocytosis (SM), an associated clonal haematological non-mast cell lineage disease (AHNMD) is detectable. Although most of these patients display KIT mutations, especially KIT(D816V), little is known about their exact frequency and their distribution in AHNMD subtypes. We examined 48 patients with SM-AHNMD for the presence of mutant KIT in the SM and AHNMD components of the disease. Mast cells and AHNMD cells were obtained from immunostained bone marrow sections by laser microdissection and examined by melting point analysis of nested-PCR products. KIT(D816V) was found in AHNMD cells in the vast majority of patients with SM-chronic myelomonocytic leukaemia (CMML, 89%). Unexpectedly, KIT(D816V) was far less frequently detectable in AHNMD cells in patients with SM-myeloproliferative neoplasm (MPN, 20%) and SM-acute myeloid leukaemia (AML, 30%). None of the patients with lymphoproliferative AHNMDs displayed KIT codon 816 mutations in AHNMD cells (0/8). In FIP1L1/PDGFRA-positive chronic eosinophilic leukaemia (CEL), neither the SM nor the CEL component of the disease exhibited the KIT mutation. Our findings demonstrate that KIT codon 816 mutations are variably present in AHNMD cells in patients with SM-AHNMD, depending on the subtype of AHNMD. The high frequency of KIT(D816V) in neoplastic mast cells and leukaemic myelomonocytic cells in SM-CMML may point to a common precursor in these patients, and may have implications for the biology of the disease and the development of KIT-targeting therapies.
Mots-clé
Aged, Aged, 80 and over, DNA Mutational Analysis/methods, DNA, Neoplasm/genetics, Female, Hematologic Neoplasms/genetics, Hematologic Neoplasms/pathology, Humans, Male, Mastocytosis, Systemic/genetics, Mastocytosis, Systemic/pathology, Microdissection/methods, Middle Aged, Mutation, Neoplastic Stem Cells/pathology, Proto-Oncogene Proteins c-kit/genetics, Retrospective Studies, Transition Temperature
Pubmed
Web of science
Création de la notice
29/06/2020 12:23
Dernière modification de la notice
30/06/2020 6:26