NRAS (Neuroblastoma RAS viral oncogene homolog)

MEK inhibitors, especially trametinib and avutometinib in combination with defactinib, have recently demonstrated improved outcomes in recurrent disease, while new combination strategies are under active evaluation to overcome resistance mechanisms. Immunotherapy remains of limited efficacy, though biomarker-driven combinations are explored. Ongoing biomarker-guided trials are expected to refine treatment paradigms.

These findings highlight the need to molecularly characterize these lesions as there is no specific histologic finding to identify cases that harbour different pathogenic alterations in specific genes.

In this Middle Eastern cohort, no consistent molecular or clinical disparities across most parameters. These findings suggest the timing of metastasis may not independently influence prognosis and highlight the relevance of individualized, biology-driven management strategies.

Tyrosine kinase inhibitors (TKIs), such as toceranib phosphate (Palladia) and masitinib, have demonstrated efficacy in MCTs...This review comprehensively synthesizes state-of-the-art literature on canine skin cancer, addressing pathophysiological mechanisms, diagnostic advancements, and emerging therapeutic strategies. In addition, this review aims to improve early detection, treatment outcomes, and enduring prognosis for affected canines by integrating recent findings into molecular oncology and comparative medicine.

Histopathological evaluation may aid risk stratification alongside KRAS status. Prognostic assessment in clinical settings should take both TNM staging and KRAS status into account.

Given the tumour's unresectable nature due to proximity to critical mediastinal structures and the patient's comorbidities, she was initiated on a modified combination immune checkpoint inhibitor regimen with nivolumab and ipilimumab. This case highlights the importance of a meticulous diagnostic approach to solitary pulmonary lesions and underscores the evolving role of immunotherapy in managing rare malignancies such as PMML. Reporting such cases enhances the clinical understanding and guides future management of this rare disease.

Together, these findings reveal proteostasis as a key constraint in the aging hematopoietic system that imposes a selective bottleneck. Hsf1 activation enables both physiological adaptation in aging stem cells and pathological clonal outgrowth in pre-leukemic and leukemic states, establishing proteostasis control as a pivotal mechanism linking stem cell aging to clonal hematopoiesis and malignancy.

As SLNB becomes increasingly integrated into clinical practice, our study highlights the important role of SLNB in managing higher-risk patients and providing access to SACT. Why mortality significantly differs between those diagnosed through teledermatology vs. face-to-face needs further investigation, but it highlights the safety of teledermatology-directed care in the skin cancer pathway.

This is the largest national dataset on melanoma NRAS and KIT status published to date. Variations in NRAS/KIT testing by geographic/demographic factors drives initiatives to ensure consistent care. NRAS mutated melanoma had high incidence which emphasises the unmet need to develop therapies and trials for NRAS mutated melanoma. This study increases our understanding of biomarkers NRAS and KIT and provides a foundation for optimising melanoma care, contributing to advancements in precision oncology.

This exploratory analysis suggests pERK expression and mutation of KRAS/BRAF/NRAS are candidate biomarkers of improved PFS and response to trametinib, respectively.

The most used agents include hydroxyurea, interferon, hypomethylating agents, and JAK inhibitors, although none of them are disease-modifying. Allogeneic hematopoietic stem cell transplant remains the only potentially curative approach and should be considered in all eligible patients. Actionable mutations (CSF3R, NRAS/KRAS, and KIT) have also been identified, supporting the development of new agents targeting the involved pathways.

This exploratory study suggests that combining CNAs and gene mutation profiles may potentially improve the existing prognostic evaluation system for NPM1-mutated AML patients. Confirmation of these results requires additional validation in larger prospective cohorts.