TMB-L

Distinctive histologic findings include lentiginous, single-cell growth of melanocytes, which may be subtle, and diagnosis is aided by immunohistochemistry. Unique molecular alterations include low tumor mutation burden and high number of copy number variations, often resulting in amplification of genes CCDN1 and KIT and TERT translocations.

This is similar to well-differentiated NETs of other organs, in particular the small intestine and lung. Overall, our findings support the grouped classification of MeNET within the larger NET scheme.

Methods We performed whole exome sequencing (WES), bulk RNAseq, multiplex immunofluorescence (mIF) and chromogenic immunohistochemistry (IHC) on tumor tissue and flow cytometry of the peripheral blood to study longitudinal changes following the combination of avelumab with utomilumab (a 4-1BB agonist) (arm A), PF-04518600 (an OX40 agonist) (arm B), utomilumab and PF-04518600 (arm C) and utomilumab and radiotherapy (arm D) in phase I/II study (NCT03217747). Conclusions Our findings, though limited, highlight genomic differences between histologic subsets and outcome as well as the need for combination strategies that drive the recruitment and/or priming of anti-tumor T cells and address low immune permissive tumor states in patients with advanced solid tumors. Clinical trial registration: This clinical trial was registered on clinicaltrials.gov NCT03217747.

Our studies reveal that CMV-specific viral memory T cells can be re-directed to control a solid tumor normally refractory to immunotherapy via a simple, intravenous injection of T-cell peptide epitopes. This mutation-agnostic approach has significant potential for the development of "off-the-shelf" therapeutics by stimulating pre-existing antiviral memory, and it is widely applicable due to the high prevalence of CMV.

AlphaTMB improves survival prediction beyond TMB alone, better captures immunogenic tumor profiles, and reflects more accurate patient stratification. This AI derived somatic mutations pathogenicity scoring represents a step toward personalized immuno-oncology and merits further validation in prospective studies.

Clones were injected subcutaneously or intracranially with or without anti-PD-1/anti-CTLA4 and dexamethasone...Rather, rejection depended on increased secretion of pro-inflammatory chemokines. Msh2 and Mlh1 loss was not equivalent, suggesting that additional studies are needed to elucidate germline and somatic mismatch repair gene-specific immune alterations.

These findings support the clinical utility of TMB as a biomarker for predicting ICI response in routine oncology practice. In particular, excluding hotspot mutations from TMB calculations may improve response prediction in patients whose TMB values are near the threshold.

Frequent synaptophysin expression in SMARCA4-deficient UC of the oesophagus can lead to diagnostic confusion with neuroendocrine carcinomas, resulting in potential mismanagement. BRG1 IHC should be incorporated in the diagnostic workup of poorly differentiated oesophageal tumours to ensure accurate classification and guide effective treatment strategies.

Given the indolent nature of many screen-detected LCINS, there is a need to shift the clinical mindset toward prioritizing active surveillance instead of immediate surgery. Overall, LDCT screening for LCINS requires careful balancing of potential benefits and harms, underscoring the need for tailored, evidence-based strategies.

We also found that MSS tumors with high TMB have a substantially higher number of neoantigens compared to low-TMB MSS tumors, suggesting they may respond better to immunotherapy, including a high proportion of predicted high-affinity neoantigens. These findings support the clinical relevance of TMB as a biomarker for neoantigen prediction and immunotherapy-relevant features in MSS tumors.

This approach resulted in unprecedented survival outcomes: the 72-month overall survival dramatically exceeds the median OS of less than 12 months reported for advanced PSC, and the patient maintained a progression-free survival of over 37 months on combination therapy, surpassing historical PFS benchmarks. This case provides a clinically actionable framework for managing multi-driver mutated, immunoresistant PSC.

Recent advances in multi-antigen targeting, metabolic reprogramming, and innovative delivery strategies have enhanced preclinical efficacy, while the integration of emerging biomarkers such as ADAMTSL4, ACSS3, and radiomics-derived immune signatures offers opportunities for precision patient stratification. Converging developments in real-time molecular monitoring, spatial immunoprofiling, and rationally designed combination regimens hold the potential to recalibrate the glioma immune landscape, paving the way toward clinically impactful and durable immunotherapeutic responses.