NRAS Q61

Clinically, one patient succumbed to disease one month and another patient experienced a recurrence at 43 months, whereas the remaining patients had no evidence of disease at 3-24 months of follow-up. MLA displays unique cytomorphologic features and accurate identification of MLA on cytology should prompt confirmatory tests to exclude potential morphologic mimics and ensure appropriate diagnosis.

These data support RRAS Q87L and RRAS2 Q72L as bona fide lung cancer drivers and nominate RRAS/RRAS2-mutant tumors as candidates for pan-RAS-targeted therapeutics. Our findings provide a biologic rationale and preclinical evidence to inform molecular testing paradigms and to prioritize enrollment of patients with RRAS/RRAS2-mutant NSCLC into future clinical trials of pan-RAS inhibitors.

MM arising within CGMN poses diagnostic and therapeutic challenges. While molecular and epigenomic profiling supports accurate classification and understanding of disease biology, the role of immunotherapy remains uncertain-marked by reduced efficacy and significant immune-related toxicity. A multidisciplinary approach is essential to guide management and improve outcomes in this rare pediatric malignancy.

Notably, the patient experienced minimal side effects and avoided toxicity-related complications. While further research is essential to validate these findings, the prospect of this approach as a viable management strategy for this aggressive cancer type is promising.

Clinicians should pay attention to the skin manifestations and neuroimaging examination in patients with unexplained intracranial hypertension or epilepsy. The diagnosis of neurocutaneous melanosis depends on histopathology and genetic testing.

Considering the limited number of similar studies on childhood thyroid cancer, these findings provide a valuable contribution to the existing literature. In particular, the results obtained from family screening may support advancements in early diagnosis, risk stratification, and the development of targeted therapeutic approaches.

Sensitivity to mutant-specific inhibitors largely overlapped with sensitivity to state-selective agents, suggesting that most RAS-mutant tumors will respond poorly to any currently available RAS inhibitor. Implications: Determining the signaling inhibition index (SII) can inform the design and clinical application of RAS-targeted therapies to improve tumor selectivity and therapeutic outcomes.

In conclusions, MSO shares histomolecular overlap with primary thyroid carcinoma, validating WHO 2022 thyroid tumor classification for risk stratification in struma ovarii. Conservative surgical management achieves excellent outcomes in low-grade cases.

However, our study has inherent limitations: DD-PCR measurements can be influenced by sampling biases, droplet variability and FFPE DNA quality. Our single-centre design and small cohort size limit generalizability but demonstrate the potential for DD-PCR to complement sequencing and clinical stratification if validated in larger populations.

To investigate these mechanisms, we utilized a tightly controlled doxycycline-inducible KRAS expression system in an isogenic, immortalized pancreatic cell line, enabling direct comparison of KRASQ61L to the common PDAC mutant KRASG12D...These findings provide experimental support for the long-standing "Goldilocks" model of oncogenic signaling, where too much ERK/MAPK pathway activation is detrimental to tumorigenesis. Our work offers a mechanistic explanation for the relative absence of KRASQ61L in PDAC and contributes to our understanding of KRAS allele-specific vulnerabilities, which can inform future therapeutic strategies targeting KRAS-driven pancreatic cancer.

P1, N=45, Recruiting, UNC Lineberger Comprehensive Cancer Center | Trial primary completion date: Aug 2025 --> Jul 2026

Combined immune‑checkpoint blockade and ocular‑plus‑cerebral radiotherapy preserved Snellen visual acuity of 20/50-2 (≈0.44 logMAR) in the affected eye, although systemic disease progressed four months later. This case highlights the importance of meticulous fundus examination, multimodal imaging, and molecular profiling for distinguishing metastatic choroidal melanoma from primary uveal melanoma when ocular inflammation obscures malignancy, thereby enabling timely, targeted therapy.