Vemurafenib is a type of cancer treatment called a cancer growth blocker. It is given for melanomas that have a V600 change (mutation) in a gene called BRAF. The change in this gene leads to the production of a changed (mutated) BRAF protein. This protein helps melanoma tumours grow.
Vemurafenib blocks (inhibits) the changed BRAF protein, which can stop the melanoma cells from growing and dividing.
Your doctors will find out if there is a mutation in the BRAF gene. They do this by testing a piece of melanoma that was removed when it was diagnosed (biopsy), or during surgery.