PDGFRA mutation

Despite histologic similarity, anogenital BCC demonstrates a distinct molecular profile, suggesting an alternative pathogenesis. Further genomic studies are warranted.

Addressing these challenges requires​ thorough correlation with clinical and radiological findings, combined application of both immunohistochemical markers, and proactive genetic testing for cases with atypical immunohistochemical profile. These measures are crucial for improving diagnostic accuracy and guiding targeted therapies.

At follow-up, the patient was clinically stable and enrolled in a multidisciplinary surveillance program. This case highlights the importance of recognizing atypical hematologic presentations of GIST and the need for comprehensive molecular and genetic evaluation in young patients.

The reported case underscores the diagnostic complexity and difficulties in managing hypereosinophilia of undetermined significance in clinical practice. While current evidence suggests a generally benign course, rare progression to hypereosinophilic syndrome or other malignancies requires structured long-term monitoring and individualized therapeutic decision-making.

Genome-wide SNP-based LOH profiling reveals distinct, subgroup-specific patterns of chromosomal imbalance in GIST and may serve as a feasible complementary approach to driver mutation analysis for refined molecular characterization and potential future clinical utility.

This case highlights the integration of pathological features, c-kit exon 11 mutation status, and imaging findings in the diagnosis and management of high-risk GSTs. The 4-year recurrence-free survival confirms the effectiveness of risk-stratified adjuvant therapy with imatinib.

Despite overlapping pathological features, uterine and gastrointestinal stromal tumors differ clinically. Surgery is the primary treatment; comprehensive preoperative imaging and postoperative pathological examination are critical to prevent misdiagnosis and optimize management.

GALNT7-mediated O-GalNAc glycosylation stabilizes KIT and drives GIST progression. GALNT7 may serve as a prognostic biomarker and therapeutic target in GIST.

Lastly, our biochemical data were validated using imatinib response data for first-line metastatic disease; patients with predicted exon 18 sensitive mutations had longer progression-free survival than patients with predicted imatinib-resistant mutations. These results provide key evidence that should be used to guide therapy selection for PDGFRA-mutant GIST.

Esophageal GISTs are exceptionally rare, and those driven by BRAF gene fusions are even more uncommon. This report describes a 69-year-old woman who underwent surgical resection of an esophageal GIST harboring an MKRN1-BRAF gene fusion, offering insight into future treatment and surveillance strategies.

For therapeutic categories, performance reached 0.84 for avapritinib sensitivity and 0.81 for imatinib sensitivity. Prognostic performance was comparable to pathology-based scores, with highest discrimination in the overall cohort and in patients without adjuvant therapy. DL applied to WSIs enables prediction of molecular alterations, treatment sensitivity, and RFS in GIST, performing comparably to established risk scores across international cohorts, providing a baseline for future multimodal predictors.

WT GISTs exhibit considerable molecular heterogeneity with novel or rare mutations of uncertain significance. Targeted NGS enables the detection of clinically relevant alterations that may guide future diagnostic and therapeutic strategies. Our findings emphasize the importance of targeted molecular profiling and raise the potential for personalized treatment in this challenging subset of GISTs.