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I discuss the results for $|V_{ub}|f_+(0)$ and $|V_{ub}|$ obtained from thespectrum of $B\to\pi e \nu$ and the form factor $f_+(q^2)$ from QCD sum ruleson the light-cone and unquenched lattice calculations; the shape of $f_+(q^2)$is fixed from experimental data.

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