WNT7B (Wnt Family Member 7B) is a gene that plays a key role in the Wnt signalling pathway, which governs crucial cellular processes such as growth, differentiation, and programmed cell death. WNT7B is especially important in embryonic development, bone formation, and blood vessel development. Disruptions in WNT7B signalling have been linked to conditions like cancer, fibrosis, and developmental disorders.