TET2 (Tet Methylcytosine Dioxygenase 2)

The megakaryocyte lineage is the most expressive in terms of reflecting morphologic dysplasia due to cytogenetic or molecular abnormalities. MDS with NK shows similar morphologic features to non-NK cases, but our findings suggest that non-NK cases exhibit higher levels of megakaryocytic dysplasia.

Regarding therapy-related toxicities, CH correlated with a higher incidence of Grade ≥ 3 neutropenia (P = 0.004) after venetoclax-based regimens...CH also influenced RT, since CH ASXL1 mutations independently associated with higher RT risk (HR 11.19, 95% CI 4.09-30.62, P < 0.001). Overall, CH in CLL impacts survival, therapeutic toxicity, and transformation risk while also influencing the T-cell immune compartment.

Using both clinical samples and experimental models, we demonstrate that the cell-permeable derivative dimethyl-α-ketoglutarate (DM-α-KG) exacerbates lipopolysaccharide (LPS)-induced tissue injury and cell death, whereas isocitrate dehydrogenase (IDH1) inhibition (IDH-305) or genetic ablation reduces α-KG levels and confers protection...These findings establish α-KG as a critical immunometabolic checkpoint in sepsis that licenses inflammatory cell death via TET2-mediated epigenetic control of AIM2. Our work not only elucidates a novel α-KG/TET2/AIM2 signaling axis in sepsis pathogenesis but also highlights the therapeutic potential of targeting this pathway to modulate immune responses.

These findings suggest that TET2-CH may serve as a biomarker of accentuated cancer immunotherapy response, providing novel insights into its role in the TME. See related article by Rondeau et al., p. 845.

Host gene variants involved in trafficking (FYCO1 and RAB7A) and immune signaling (FOXA2, SFTPD, STAT3, and TET2) were associated with differential infection profiles. These findings show that SARS-CoV-2 induces variant- and tumor-specific morphological and immunological changes in cancer PDOs, highlighting the potential of this model to unravel host-virus interactions and identify genetic factors that shape infection outcomes in cancer.

She underwent leukapheresis, hydroxyurea for cytoreduction, and bortezomib-dexamethasone for myeloma. In elderly patients with cytopenias and monocytosis, thorough diagnostic workup is crucial. This case emphasizes the need for personalized therapy in complex hematologic overlap syndromes.

This review offers an updated synthesis of the evolving molecular landscape of MF, highlighting how the intricate interplay among genetic alterations has deepened our understanding of disease heterogeneity, allowing refined risk stratification and therapeutic planning. Advances emerging from molecular research and experimental models are progressively translating into clinical practice, promoting more personalized and targeted approaches to the management of MF.

P2, N=80, Recruiting, Mayo Clinic | Trial completion date: Nov 2033 --> Mar 2027 | Trial primary completion date: Feb 2031 --> Mar 2027

Finally, we highlight the impact of TET2 mutations on age-related inflammatory diseases, including cardiovascular and neurodegenerative disorders. Collectively, available evidence positions TET2 as a key integrator of epigenetic state and immune signaling, with context-dependent effects on inflammation and tissue homeostasis, and underscores the therapeutic potential of targeting TET2-dependent pathways in clonal hematopoiesis and inflammatory diseases.

We used targeted genome editing to demonstrate endogenous enhancer activity across 3 MPRA variants that affect the transcription of NKD2, FLT3, and MSI2. Our functional studies on MSI2 indicate that presence of higher levels of MSI2 mediated by CHIP risk allele enhances the clonal expansion of TET2 knockout hematopoietic stem and progenitor cells, providing a mechanistic link whereby non-coding genetic variants can influence the expansion of mutant CHIP clones.

Most somatic TP53 mutations in LFS that could be assessed for phase arose on the chromosomal copy lacking the p.R181H variant. Our study reveals how the germline p.R181H variant reshapes baseline somatic mutation and selection in normal tissues and highlights the importance of understanding early somatic evolution in LFS prior to cancer development and treatment.

TET2 and TP53 mutations co-operate leading to advanced hematologic malignancy. TET2 mutations promote an inflammatory environment and TP53 mutation supports tolerance to this inflammatory stress.