KIT mutation

Increased miR-100 levels in CBF-AML (with the t(8;21) subtype included) were associated with poor overall survival (OS); notably, within CBF-AML, the t(8;21) subtype AML patients showed the same trend, where higher miR-99a and miR-100 expression correlated with adverse OS. These findings suggest that regulated expression of miR-99a and miR-100 is common in AML and that their expression correlates with prognosis in CBF-AML.

Finally, we identify critical gaps in understanding the mechanisms of resistance, CNS progression, and the immunogenic landscape of KIT-driven melanoma. Deeper insight into the function of KIT and its interaction with therapeutic pathways is essential to optimizing treatment sequencing and tailoring personalized strategies that improve outcomes in this patient population.

This study delineated the genetic landscape of pAML in Southwest China and explored the prognostic value of gene fusions and mutations in early and long-term outcomes. These findings provide a foundation for understanding the genetic heterogeneity of pAML and offer evidence for the development of precision medicine approaches.

In patients with locally advanced GIST, preoperative imatinib therapy for 7-12 months yielded the most favorable prognosis, with significantly improved RFS and OS compared to ≤6 months of treatment. Extending preoperative therapy beyond 12 months did not provide additional survival benefit.

Identification of clinical and genetic biomarkers for recurrence risk prediction in resected melanoma may aid in clinical decision-making for early disease monitoring and optimal design of therapeutic strategies.

Treatment options encompass avoidance of triggers of mast cell activation, H1 and H2 antihistamines, cromolyn and omalizumab. In children with systemic mastocytosis, tyrosine kinase inhibitors tailored to the specific KIT variant may be considered.

In the context of the imaging and molecular study results, a diagnosis of giant cellular blue nevus was made. This case highlights a rare presentation of giant CBN and the utility of integrating next-generation sequencing with histopathologic evaluation to distinguish the latter from melanoma and support clinical decision making.

Our findings provided preliminary evidence that novel FGFR2 fusions might act as primary oncogenic drivers in a rare subset of KIT/PDGFRA wild-type GISTs. These cases highlight the importance for comprehensive genomic profiling and suggest that fibroblast growth factor receptor-targeted inhibitors could be a potential therapeutic strategy for advanced or imatinib-resistant diseases, warranting further investigation in larger cohorts.

The discontinuation of lenvatinib in patients with thymic carcinoma caused disease flare in 8% of cases, with KMT2C and KIT mutations emerging as potential contributing factors. These findings suggest that molecular profiling helps in identifying patients at high risk of disease flare and informs future treatment sequencing strategies.

WES of ctDNA uncovers extensive ITH and identifies molecular drivers of resistance not captured by tissue biopsies. These findings support the use of plasma ctDNA analysis to monitor tumor evolution and personalize follow-up in LA-HNSCC, especially given the anatomical complexity that often limits repeated tissue sampling.

Anti-osteoporosis medications (bisphosphonates, denosumab, and teriparatide) and cytoreductive agents (interferon, chemotherapeutic agents, or tyrosine kinase inhibitors) are also used. Although controlling the underlying disease is usually most effective, the benefits and risks of each therapeutic approach should be balanced if needed.

WT1 overexpression and KIT mutations (in selected cytogenetic contexts) are validated as adverse prognostic indicators in pediatric AML. Conversely, FLT3-ITD and CEBPA mutations require nuanced interpretation due to variable effects and methodological heterogeneity. These findings support the integration of molecular profiling into pediatric AML risk stratification and underscore the need for harmonized, prospective studies to refine prognostic models in this population.