TCF4 and Pitt-Hopkins syndrome: Bedeschi M.F., Marangi G., Calvello M.R., Ricciardi S., Leone F.P.C.,Baccarin M., Guerneri S., Orteschi D., Murdolo M., Lattante S.,Frangella S., Keena B., Harr M.H., Zackai E., Zollino M. Impairmentof different protein domains causes variable clinical presentationwithin Pitt-Hopkins syndrome and suggests intragenic molecularsyndromology of TCF4.