The US Food and Drug Administration has approved a third cancer drug that targets a genetic driver of cancer, rather than a specific type of tumour. The drug, Rozlytrek (entrectinib), is directed at cancers with neurotrophic tyrosine receptor kinase (NTRK) gene fusions, a fault that can result in the activation of signalling pathways involved in the proliferation of a number of solid tumours. These fusions are known to occur in breast, colorectal, non-small cell lung, pancreatic and thyroid cancers, among others.
