Zelboraf (vemurafenib)

Using a panel of BRAFV600E positive YUMM lines, we find that, following chronic vemurafenib treatment, SOX10 is lost whereas SOX9 is induced...Overall, our data show that the loss of SOX10 and SOX9 induction are critical to program drug resistance. Furthermore, we show that the YUMM cell lines represent a good murine model to investigate transitions to an acquired drug resistant state.

Glioblastoma (GBM) is the most lethal brain tumor, characterized by strong resistance to conventional therapies. Furthermore, vemurafenib, which targets FOSL1, was identified as a potential therapeutic agent against TMZ-resistant GBM in a mouse model. These findings suggest that FOSL1 promotes TMZ chemoresistance by regulating IL-6-pSTAT3Tyr705-mediated stemness in GBM cells, making it a promising therapeutic target to overcome chemoresistance in GBM.

P2, N=1376, Active, not recruiting, National Cancer Institute (NCI) | Trial completion date: May 2026 --> Jan 2027

The greatest benefits of encorafenib plus binimetinib were observed in patients with evidence of high TMB and/or tumor immune infiltration, suggesting potential immune contributions to efficacy, which were not observed with vemurafenib. BRAF V600 detectability in ctDNA appears to have utility as a marker of prognosis and response in this population.

These three compounds were also tested on the vemurafenib-resistant (A375R) and normal (HaCaT and MRC-5) cell lines, and compound 8 showed better cytotoxicity (IC50 = 8.84 ± 1.24 µM) and selectivity (>3.50) when compared to telmisartan (IC50 = 29.23 ± 3.88, selectivity > 2.40). All three compounds induced cell cycle arrest and disrupted mitochondrial morphology and membrane potential. These findings highlight their potential as non-antihypertensive telmisartan derivatives for melanoma therapy.

Data from this study provides provocative evidence that, while BRAF+/-MEK inhibitor therapy produces an increase in overall and clonal T cell infiltrates, there is limited evidence for generation of new or persistent tumor immunity. Thus, BRAFi/MEKi therapy may enable tumor-reactive T cells to infiltrate tumors but tumor control does not appear to depend on priming new immune responses.

In conclusion, our case highlights that the primary diagnostic clue for ECD may be a single yellowish plaque, which requires further investigation in relation to other systemic symptoms. Vemurafenib treatment may lead to regression of systemic symptoms and cutaneous yellowish plaques associated with ECD carrying a BRAF mutation.

A 48-year-old man with stage IV cutaneousmelanoma with BRAF V600E mutation achieved complete systemic remission with vemurafenib...Sub-Tenon's triamcinolone and intravenous immunoglobulin failed toimprove symptoms, but bilateral intravitreal dexamethasone implants (Ozurdex) resolved visual disturbances and normalized ERG...The absence of autoantibodies and late flares challenges current diagnostic paradigms, emphasizing ERG's critical role. Proactive ophthalmologic surveillance and individualized local therapy canpreserve vision in this underrecognized condition.

RAMRGs serve as useful biomarkers to predict prognosis in LUAD patients, and may guide the immunotherapy regimen.

Oral melanocytic neoplasms are rare and have distinct clinicopathological features. Despite this, a gap exists in molecular data regarding ODN and AMP. Conversely, OMN and OMM have distinct profiles; in particular, the latter may benefit modestly from tyrosine kinase inhibitor treatment, as KIT and BRAF mutations are sensitive to imatinib and vemurafenib, respectively.

Although vemurafenib showed efficacy in metastatic melanoma, off-label use resulted in limited benefit and increased adverse events. Unclear endpoints and underreported adverse events highlight the need for improved clinical trial design.

Selective BRAF and MEK inhibitors-including vemurafenib, dabrafenib, and selumetinib-have demonstrated efficacy in advanced thyroid cancers. The combination of dabrafenib and trametinib is FDA-approved for BRAF V600E-mutant anaplastic thyroid carcinoma (ATC) based on its significant survival benefits...Additionally, redifferentiation strategies using MAPK inhibitors to restore RAI avidity have shown promise, particularly in selected patients. These advances highlight the need to contextualize BRAF mutation status within a broader molecular and clinical framework to guide personalized, effective treatment strategies.