HRAS mutation

Tumor tissue and serial plasma samples were collected from 15 patients with aUC treated with dose-dense methotrexate, vinblastine, doxorubicin, and cisplatin (ddMVAC). While the NOIR-SS-based assay proved sensitive and informative, limitations include the cost and time required for sequencing, potential temporal discordance between tissue and plasma sampling, and the absence of correction for clonal hematopoiesis of indeterminate potential. Overall, ctDNA profiling using this targeted panel and NOIR-SS suggested the feasibility of sensitive, non-invasive molecular monitoring in aUC, and may have future clinical applicability if validated prospectively in larger cohorts.

P1, N=24, Recruiting, Ruijin Hospital

GSTO1*A140D polymorphism deserves to be further explored as a possible risk factor associated with a worse PFS in thymoma. Specific targets of GSTO1-1 in thymomas need to be determined.

Depending on the Bethesda category, the positive predictive value for malignancy of the seven-gene panel ranged between 18.18% (Bethesda III) and 91.07% (Bethesda V), while the negative predictive value ranged between 93.92% (Bethesda III) and 24.14% (Bethesda V). In conclusion, molecular testing with the seven-gene panel can improve ROM estimation in cytopathologically indeterminate thyroid nodules, but its clinical utility depends on the detected gene alteration.

Mutant-specific KRAS G12C inhibitors have shown promising therapeutic efficacy, leading to FDA approval of sotorasib and adagrasib, although their use is limited to patients with the relatively rare G12C KRAS mutation...While just a few years ago, pan-RAS inhibitors were predicted to be severely toxic or even fatal, the apparent safety profile of RMC-6236 (daraxonrasib), a pan-RAS inhibitor currently in clinical trials, suggests otherwise. Indeed, pan-RAS inhibitors are now considered by many in the RAS field to be the most promising class in development. In this review, we summarize the evolution and current status of pan-RAS and pan-KRAS inhibitors in preclinical and clinical development and highlight emerging human-relevant tumor models that are advancing preclinical evaluation.

Lgr6+ stem cells initiated by dimethylbenzanthracene responded to tumor promoter treatment resulting in clonal expansion of initiated cells carrying the canonical Hras Q61L mutation. Spontaneous mutations in Kras also clonally expanded, but did not generate tumors unless the Hras gene was deleted, thus revealing a competitive interaction between Hras and Kras pathways that influences clonal selection.

P=N/A, N=9, Terminated, University Hospital, Bordeaux | Completed --> Terminated; Target number of inclusion not reached

The "second chance" for FTIs is here but the successful clinical implementation of FTIs can only be achieved if the design of the new clinical trials do not repeat mistakes of the past: application of these drugs without predictive markers.

P3, N=590, Recruiting, Revolution Medicines, Inc. | N=420 --> 590

We review reports of the interaction of cathepsin B with trypsinogen in the pancreas and caspases in inflammasomes and the potential effect of premature activation of trypsin on immune evasion of G12R mutants. We summarize our observations and literature review in a schematic describing the potential role inflammation and the actions of cathepsin B, trypsin, and caspases on the immune evasion of KRas and related Ras family gene products.

P1/2, N=5, Terminated, National Cancer Institute (NCI) | Completed --> Terminated; Study was closed due to lack of accrual and study outcomes overlapped with another protocol's eligibility.

FGFR3 mutation was not detected in any of the cases. Urothelial carcinomas occurring in children and young adults exhibit a distinct molecular profile compared with those in older patients, characterized by a higher frequency of HRAS mutations and a significantly lower prevalence of TERT promoter and FGFR3 alterations.