Gastrointestinal Cancer

Considering the rarity and heterogeneity of WT-GISTs, a regulatory detection procedure should be established for WT-GISTs, including NGS for qWT-GISTs, to identify the molecular mechanisms and potential therapeutic targets. Implications: WT-GISTs are heterogenous tumors which should be managed using different treatments and follow-up strategies.

Preclinical studies demonstrate that MEL enhances chemoradiotherapy efficacy-reducing tumor volume by 70% in murine colorectal models and decreasing 5-fluorouracil (5-FU) resistance via miR-532-3p/β-catenin axis modulation...Given its low toxicity and putative synergy with immunotherapies, MEL should be regarded as an adjunct under investigation rather than an established option; to date, no GI-specific phase III randomized trials exist, and clinical signals come primarily from small, heterogeneous cohorts. Dosing is unstandardized and limited by low oral bioavailability (first-pass) and possible pharmacogenomic variability.

Recent advances have shed light on the structural basis of gankyrin's molecular interactions, its potential as a diagnostic and prognostic biomarker, and emerging therapeutic strategies. Together, targeting gankyrin represents a promising strategy for precision oncology in GI cancers.

The patient has been on imatinib since July 2023 with controlled disease. To the best of our knowledge, this is the first reported case of CSS with a DIS3L2 variant. Further reports and studies are needed to establish a definitive association between this gene and CSS.

P=N/A, N=150, Not yet recruiting, Hospices Civils de Lyon

DPYD rs4294451 T-allele count and male sex were significantly associated with reduced 5-FU drug exposure. DPYD rs4294451 and male sex merit further evaluation as candidate biomarkers to inform initial dosing of infusional 5-FU.

MSI-like GES does not identify a population with higher sensitivity to immune checkpoint plus angiogenesis inhibition. However, responses are promising in patients with MSI tumors and, to a lesser extent, in patients without liver metastasis regardless of MSI status.

P=N/A, N=6000, Not yet recruiting, Imperial College London

Six PMS2 variants were associated with either early or later-onset CMMRD. Future validation through larger prospective cohort studies is necessary to confirm our findings and better understand the natural history of PMS2-CMMRD to inform clinical decision-making in PMS2-Lynch syndrome (PMS2-LS).

In light of the lack of metastatic dissemination and the patient's advanced age, targeted therapy with imatinib was commenced, leading to the elimination of hypoglycemia episodes. This case underscores the necessity of incorporating NICTH into the differential diagnosis of hypoglycemia in non-diabetic individuals, particularly when a tumor is present. Timely identification and focused intervention of the underlying neoplasm can result in positive outcomes.

Serum COX-2 levels did not show a significant change with capecitabine-based therapy, regardless of the use of topical diclofenac possibly reflecting the predominant stromal production of the enzyme. This finding highlights the need to assess HFS-affected tissues for local COX-2 immuno-expression along with further blood-based biomarkers.

Although rare, OBC can present as bilateral ovarian masses. Enhanced awareness and a comprehensive diagnostic approach are critical for improving patient outcomes.