|V_{ub}| from the Spectrum of B->pi e nu

I discuss the results for $\mathrm{\mid }{V}_{ub}\mathrm{\mid }{f}_{+}(0)$ and $\mathrm{\mid }{V}_{ub}\mathrm{\mid }$ obtained from the spectrum of $B\to \pi e\nu$ and the form factor $f_{+}(q^2)$ from QCD sum rules on the light-cone and unquenched lattice calculations; the shape of $f_{+}(q^2)$ is fixed from experimental data.