Clinical, molecular, and prognostic correlates of number, type, and functional localization of TET2 mutations in chronic myelomonocytic leukemia (CMML)-a study of 1084 patients

Loss-of-function TET2 mutations (TET2MT) are frequent early clonal events in myeloid neoplasms and are thought to confer a fitness advantage to hematopoietic precursors. This large, multi-institutional study (n = 1084), investigated the TET2 mutational landscape and prognostic implications of the number, type, and location of TET2MT and the epistatic relationship with other somatic events in chronic myelomonocytic leukemia (CMML). Nine hundred and forty-two TET2MT were identified in 604 (56%) patients, of which 710 (75%) were predicted to be truncating (involving the catalytic domain). Three hundred and sixteen (29%) patients had ≥1 TET2MT, with 28%, 1%, and 0.2% harboring 2, 3, and 5 mutations, respectively. In comparison to TET2WT, TET2MT patients were older in age, more likely to have dysplastic CMML, a higher number of co-occurring mutations, and lower-risk stratification. Importantly, TET2MT were associated with a survival advantage (49 vs. 30 months, p < 0.0001), especially in the context of multiple TET2MT (≥2; 57 months, p < 0.001), and truncating TET2MT (51 months, p < 0.001). In addition, the adverse prognostic impact of ASXL1MT was partially mitigated by concurrent TET2MT, with the ASXL1WT/TET2MT genotype having better outcomes and resulting in further risk stratification of ASXL1 inclusive CMML prognostic models, in comparison to ASXL1MT alone.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:34

Enthalten in:

Leukemia - 34(2020), 5 vom: 13. Mai, Seite 1407-1421

Sprache:

Englisch

Beteiligte Personen:

Coltro, Giacomo [VerfasserIn]
Mangaonkar, Abhishek A [VerfasserIn]
Lasho, Terra L [VerfasserIn]
Finke, Christy M [VerfasserIn]
Pophali, Prateek [VerfasserIn]
Carr, Ryan [VerfasserIn]
Gangat, Naseema [VerfasserIn]
Binder, Moritz [VerfasserIn]
Pardanani, Animesh [VerfasserIn]
Fernandez-Zapico, Martin [VerfasserIn]
Robertson, Keith D [VerfasserIn]
Bosi, Alberto [VerfasserIn]
Droin, Nathalie [VerfasserIn]
Vannucchi, Alessandro M [VerfasserIn]
Tefferi, Ayalew [VerfasserIn]
Hunter, Anthony [VerfasserIn]
Padron, Eric [VerfasserIn]
Solary, Eric [VerfasserIn]
Patnaik, Mrinal M [VerfasserIn]

Links:

Volltext

Themen:

Biomarkers, Tumor
DNA-Binding Proteins
Dioxygenases
EC 1.13.11.-
Journal Article
Multicenter Study
Proto-Oncogene Proteins
Research Support, Non-U.S. Gov't
TET2 protein, human

Anmerkungen:

Date Completed 29.09.2020

Date Revised 21.04.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1038/s41375-019-0690-7

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM304379344