Schematic representation of clinical features shared by Rubinstein–Taybi, genitopatellar, floating harbor, and Cornelia de Lange syndromes. The main clinical characteristics of RSTS, GTPTS, FLHS, and CdLS are grouped by continuous, dashed, dotted, and double lines, respectively. CdLS, Cornelia de Lange syndrome; FLHS, Floating–Harbor syndrome ; GTPTS, genitopatellar syndrome; RSTS, Rubinstein–Taybi syndrome;