Zelboraf (vemurafenib)

P2, N=50, Completed, University College, London | Active, not recruiting --> Completed | Trial completion date: May 2026 --> Nov 2025 | Trial primary completion date: May 2026 --> Nov 2025

P2, N=64, Completed, Mayo Clinic | Active, not recruiting --> Completed

Comprehensive molecular testing in SGC may allow access to MMT, with a subset of patients experiencing clinical benefit from this strategy.

Vemurafenib and dabrafenib are two selective BRAF inhibitors approved by the FDA for clinical use. Molecular dynamics and metadynamics simulations were performed in the Desmond module of the academic version of the Schrödinger-Maestro 2021-4 program, utilizing the OPLS-2005 force field. Finally, all the protein figures presented in this article were made in the PyMOL program and the RMSD graphics were made in the statistical package R and RStudio 2025.05.1.

P2, N=15, Completed, Scripps Health | Active, not recruiting --> Completed | Trial completion date: Dec 2026 --> Apr 2026 | Trial primary completion date: Dec 2026 --> Apr 2026

Vemurafenib increases miR-31-5p in keratinocyte-derived exosomes, which suppresses ALKBH1 and elevates RNA m6A in melanoma cells, thereby promoting proliferation and reducing vemurafenib sensitivity. Targeting the miR-31-5p/ALKBH1 axis and m6A modification may offer a potential therapeutic strategy to enhance vemurafenib sensitivity in BRAFV600E melanoma cells.

P1, N=47, Completed, M.D. Anderson Cancer Center | Active, not recruiting --> Completed | N=33 --> 47

This study investigates the synergistic effects of capivasertib, an Akt pathway inhibitor, in combination with B-Raf inhibitors (vemurafenib and encorafenib) in B-Raf-mutated melanoma models. Systemic toxicity analyses revealed no significant changes in body weight or serum markers of pancreatic, kidney, or liver function. These findings establish capivasertib and B-Raf inhibitor combinations as a safe and effective strategy for overcoming resistance B-Raf-mutated melanoma, providing new insights into the potential of dual pathway targeting.

Using electrophilic probes, we show that treatment of BRAFV600E mutant melanoma cells with vemurafenib or trametinib decreases overall cysteine and lysine reactivity in BRAFV600E and MEK1/2, likely reflecting composite changes in amino acid accessibility across multiple reactive residues associated with inhibitor binding...Comparative analysis of ATP-competitive BRAFV600E inhibitors vemurafenib and dabrafenib indicated differences in aspartate and glutamate labeling patterns, consistent with the possibility that ABPP may detect inhibitor-associated variations in residue accessibility, which could reflect differences in inhibitor-bound conformations...Moreover, global proteome analyses of cysteine and lysine reactivity upon BRAFV600E inhibition revealed probe-accessible cysteine labeling changes on KSR2, suggesting a potential MAPK pathway remodeling. Together, these findings highlight ABPP as a valuable chemical biology approach for investigating inhibitor-dependent changes in kinase residue reactivity, offering a framework to investigate how kinase conformational dynamics and signaling pathway adaptation influence the therapeutic response and resistance in cancer.

We have identified a small molecule produced by a marine sponge as being able to inhibit PTCH1 efflux activity and increase the efficacy of vemurafenib treatment on BRAF-mutated melanoma cells in vitro and in vivo in mice. We found that inhibiting PTCH1 drug efflux activity significantly increased the cytotoxic effect of chemotherapies such as doxorubicin and docetaxel in three TNBC cell lines. Overall, our findings suggest that PTCH1 plays a role in the resistance of TNBC cells to chemotherapy, and that using a PTCH1 efflux inhibitor during neoadjuvant or adjuvant therapy could enhance the efficacy of treatment against PTCH1-expressing TNBC, while preventing treatment resistance, relapse, and metastasis formation.

In the absence of head-to-head trials comparing 1L nivolumab plus relatlimab (NIVO+RELA) to BRAF/MEK inhibitors, we compared its efficacy to dabrafenib+trametinib (DAB+TRAM), encorafenib+binimetinib (ENCO+BINI), vemurafenib+cobimetinib (VEM+COBI) and atezolizumab (ATEZO)+VEM+COBI using matching-adjusted indirect comparisons (MAICs)...These MAICs suggest that 1L dual IO therapy with NIVO+RELA confers a long-term OS advantage in BRAF-mutant advanced melanoma compared with BRAF/MEK inhibitor combinations despite lower ORR, consistent with prior evidence for 1L NIVO+IPI in this setting. As unanchored analyses, potential residual confounding remains, and results should be interpreted cautiously.

Through integrated transcriptomic and metabolomic analyses, we demonstrate that BRAFi by vemurafenib (PLX4032) significantly enhances FAO in thyroid cancer cells. The pharmacological inhibition of FAO via thioridazine (Thio) synergizes with BRAFi to suppress tumor growth in vitro, in vivo and in a patient-derived organoid...Consistently, functional studies confirm RUNX1's oncogenic role, as its knockdown reduces cell proliferation, migration, and invasion. In conclusion, our work reveals a metabolic-epigenetic axis underlying adaptive response to BRAFi and identifies RUNX1 as a novel oncogene in thyroid cancer.