Vemurafenib increases the effectiveness of a treatment that uses immune system cells modified to target cancer cells, according to a study in Cancer Research. When combined with vemurafenib, which targets melanomas with the most common BRAF mutations (V600), this immunotherapy treatment killed more melanoma cells in mice. The combination treatment was also more successful than vemurafenib alone. The researchers conclude that their work supports testing this combination treatment in people with melanomas that have BRAF V600 mutations.