A recurrent mosaic mutation of SMO, encoding the hedgehog signal transducer Smoothened, is the major cause of Curry-Jones syndrome by Twigg, S, Wilkie, A, Hufnagel, R, Miller, K, Zhou, Y, McGowan, S, Taylor, J, Craft, J, Taylor, J, Santoro, S, Huang, T, Hopkin, R, Brady, A, Clayton-Smith, J, Clericuzio, C, Grange, D, Groesser, L, Hafner, C, Horn, D, Temple, I, Dobyns, W, Curry, C, Jones, M, Wilkie, A